Re: [Chevelle-list] Back in the Day / Float the Valves?
Well said. And if you get the looks of admiration thumbs up that I get on the road,being a Chevelle Snob is not a bad thing. I'd like my engine to stay together for a while. Gone are the days when we were hot rod/shade tree kidsand we could blow it and rebuild it by the followingweekend! Phil G. 65 SS -Original Message-From: Craig Ellis [EMAIL PROTECTED]To: The Chevelle Mailing List Chevelle-list@chevelles.netSent: Thu, 13 Oct 2005 15:09:00 -0400Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? I decided years ago when I put a 6500 RPM cam in my BB motor that I'd eyeball limit to 6000. I'm not draggin' for money and I'd just as soon not grenade my 1970 vintage block just to spank some yahoo with three earings and a '98 Mustang. If I can't git 'r donewith 6k, well, I'll have to accept it. Besides, it doesn't matter how fast some lesser car goes - mine is a Chevelle with fatblockand a Muncie - that makes it more better by definition. Chevelle Snob - Original Message - From: Matthew Post To: The Chevelle Mailing List Sent: Thursday, October 13, 2005 2:59 PM Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Yeah, me too. I've also always been careful of hitting rev limiters on other cars I've owned. I am considering a rev limiter for the Chevelle, but have always wonder if a rev limiter can cause harm to an engine as well? Or is it just fouled plugs at worst? Does anyone have an opinion on that?Of course, even if the rev limiter caused some damage, it's probably not as serious as over revving an engine I'm sure. There's no KABOOM! when you hit a rev limiter. Just wondering if there might be long term harm.Thanks,MattAt 11:29 AM 10/13/2005, you wrote: Thank you for the insight, it seems like harm can only come from this and no advantage gained.I have always been won to respect the redline in cars, motorcycles, etc. and the few times over was a "whew it stayed together"Thanks again,Krister-Original Message-From: Craig Ellis [EMAIL PROTECTED]To: The Chevelle Mailing List Chevelle-list@chevelles.netSent: Thu, 13 Oct 2005 14:01:27 -0400Subject: Re: [Chevelle-list] Back in the Day / Float the Valves?Nope...it's basically reving the motor past the point where the valve springs can close the valve in time for the next compression or exhaust stroke. It's a "bad thing"...especially if the piston slaps a valve. That's one of the reasons valve seat spring load is important and why you match springs to cam, etc.Craig E. - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Thursday, October 13, 2005 1:55 PM Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Well I am 41, been around cars my whole life and have not heard the term "float the valves" doesn't sound like a good thing to do, but what is it? My guess - depressing clutch to shift, but intenially not taking your foot off the gas? Thank you, Krister Meister Bloomingdale, IL '66 SS #'s -Original Message- From: Bob Haggard [EMAIL PROTECTED] To: The Chevelle Mailing List Chevelle-list@chevelles.net Sent: Wed, 12 Oct 2005 21:48:21 -0400 Subject: Re: [Chevelle-list] Back in the Day When I was in the Air Force (66-70) a friend had a red Chevelle SS with 396/350hp. It was a beautiful car and what I always remember was he liked to shift when the valves would float. I was amazed that it stayed together since a high school friend had a 63 Impalla (1963) with 409/425hp that would float the valves when he missed a shift and it would usually end up back at the Chevy dealer to replace bent pushrods and other assorted parts. Bob Haggard - old fart From: Bob Fisher [EMAIL PROTECTED] Date: 2005/10/12 Wed PM 04:25:42 EDT To: Chevelle-list@chevelles.net Subject: [Chevelle-list] Back in the Day Reminisicing at the tender age of 17 working in the local burger joint and working the night shift when the night porter Pee Wee drove up with his new 1969 Chevelle SS , Black with Red interior and red stripes, with 396-375 and four on the floor with eyebrows on the headlights?? - Yahoo! Music Unlimited - Access over 1 million songs. Try it free.
Re: [Chevelle-list] Back in the Day / Float the Valves?
Well I am 41, been around cars my whole life and have not heard the term "float the valves" doesn't sound like a good thing to do, but what is it? My guess - depressing clutch to shift, but intenially not taking your foot off the gas? Thank you, Krister Meister Bloomingdale, IL '66 SS #'s-Original Message-From: Bob Haggard [EMAIL PROTECTED]To: The Chevelle Mailing List Chevelle-list@chevelles.netSent: Wed, 12 Oct 2005 21:48:21 -0400Subject: Re: [Chevelle-list] Back in the Day When I was in the Air Force (66-70) a friend had a red Chevelle SS with 396/350hp. It was a beautiful car and what I always remember was he liked to shift when the valves would float. I was amazed that it stayed together since a high school friend had a 63 Impalla (1963) with 409/425hp that would float the valves when he missed a shift and it would usually end up back at the Chevy dealer to replace bent pushrods and other assorted parts. Bob Haggard - old fart From: Bob Fisher [EMAIL PROTECTED]com Date: 2005/10/12 Wed PM 04:25:42 EDT To: Chevelle-list@chevelles.net Subject: [Chevelle-list] Back in the Day Reminisicing at the tender age of 17 working in the local burger joint and working the night shift when the night porter Pee Wee drove up with his new 1969 Chevelle SS , Black with Red interior and red stripes, with 396-375 and four on the floor with eyebrows on the headlights?? - Yahoo! Music Unlimited - Access over 1 million songs. Try it free.
Re: [Chevelle-list] Back in the Day / Float the Valves?
Nope...it's basically reving the motor past the point where the valve springs can close the valve in time for the next compression or exhauststroke. It's a "bad thing"...especially if the piston slaps a valve. That's one of the reasons valve seat spring load is important and why you match springs to cam, etc. Craig E. - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Thursday, October 13, 2005 1:55 PM Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Well I am 41, been around cars my whole life and have not heard the term "float the valves" doesn't sound like a good thing to do, but what is it? My guess - depressing clutch to shift, but intenially not taking your foot off the gas? Thank you, Krister Meister Bloomingdale, IL '66 SS #'s-Original Message-From: Bob Haggard [EMAIL PROTECTED]To: The Chevelle Mailing List Chevelle-list@chevelles.netSent: Wed, 12 Oct 2005 21:48:21 -0400Subject: Re: [Chevelle-list] Back in the Day When I was in the Air Force (66-70) a friend had a red Chevelle SS with 396/350hp. It was a beautiful car and what I always remember was he liked to shift when the valves would float. I was amazed that it stayed together since a high school friend had a 63 Impalla (1963) with 409/425hp that would float the valves when he missed a shift and it would usually end up back at the Chevy dealer to replace bent pushrods and other assorted parts. Bob Haggard - old fart From: Bob Fisher [EMAIL PROTECTED]com Date: 2005/10/12 Wed PM 04:25:42 EDT To: Chevelle-list@chevelles.net Subject: [Chevelle-list] Back in the Day Reminisicing at the tender age of 17 working in the local burger joint and working the night shift when the night porter Pee Wee drove up with his new 1969 Chevelle SS , Black with Red interior and red stripes, with 396-375 and four on the floor with eyebrows on the headlights?? - Yahoo! Music Unlimited - Access over 1 million songs. Try it free.
Re: [Chevelle-list] Back in the Day / Float the Valves?
When your RPM is so high your valve springs can't keep up with the cam/lifters. The valves won't close fast enough, causing the tops of the pistons to hit the valves. Larry - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Thursday, October 13, 2005 1:55 PM Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Well I am 41, been around cars my whole life and have not heard the term "float the valves" doesn't sound like a good thing to do, but what is it? My guess - depressing clutch to shift, but intenially not taking your foot off the gas? Thank you, Krister Meister Bloomingdale, IL '66 SS #'s-Original Message-From: Bob Haggard [EMAIL PROTECTED]To: The Chevelle Mailing List Chevelle-list@chevelles.netSent: Wed, 12 Oct 2005 21:48:21 -0400Subject: Re: [Chevelle-list] Back in the Day When I was in the Air Force (66-70) a friend had a red Chevelle SS with 396/350hp. It was a beautiful car and what I always remember was he liked to shift when the valves would float. I was amazed that it stayed together since a high school friend had a 63 Impalla (1963) with 409/425hp that would float the valves when he missed a shift and it would usually end up back at the Chevy dealer to replace bent pushrods and other assorted parts. Bob Haggard - old fart From: Bob Fisher [EMAIL PROTECTED]com Date: 2005/10/12 Wed PM 04:25:42 EDT To: Chevelle-list@chevelles.net Subject: [Chevelle-list] Back in the Day Reminisicing at the tender age of 17 working in the local burger joint and working the night shift when the night porter Pee Wee drove up with his new 1969 Chevelle SS , Black with Red interior and red stripes, with 396-375 and four on the floor with eyebrows on the headlights?? - Yahoo! Music Unlimited - Access over 1 million songs. Try it free.
Re: [Chevelle-list] Back in the Day / Float the Valves?
Thank you for the insight, it seems like harm can only come from this and no advantage gained. I have always been won to respect the redline in cars, motorcycles, etc. and the few times over was a "whew it stayed together" Thanks again, Krister-Original Message-From: Craig Ellis craig@neagroup.comTo: The Chevelle Mailing List Chevelle[EMAIL PROTECTED]Sent: Thu, 13 Oct 2005 14:01:27 -0400Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Nope...it's basically reving the motor past the point where the valve springs can close the valve in time for the next compression or exhauststroke. It's a "bad thing"...especially if the piston slaps a valve. That's one of the reasons valve seat spring load is important and why you match springs to cam, etc. Craig E. - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Thursday, October 13, 2005 1:55 PM Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Well I am 41, been around cars my whole life and have not heard the term "float the valves" doesn't sound like a good thing to do, but what is it? My guess - depressing clutch to shift, but intenially not taking your foot off the gas? Thank you, Krister Meister Bloomingdale, IL '66 SS #'s-Original Message-From: Bob Haggard skylark1970@alltel.netTo: The Chevelle Mailing List Chevelle-list@chevelles.netSent: Wed, 12 Oct 2005 21:48:21 -0400Subject: Re: [Chevelle-list] Back in the Day When I was in the Air Force (66-70) a friend had a red Chevelle SS with 396/350hp. It was a beautiful car and what I always remember was he liked to shift when the valves would float. I was amazed that it stayed together since a high school friend had a 63 Impalla (1963) with 409/425hp that would float the valves when he missed a shift and it would usually end up back at the Chevy dealer to replace bent pushrods and other assorted parts. Bob Haggard - old fart From: Bob Fisher twins3950@yahoo.com Date: 2005/10/12 Wed PM 04:25:42 EDT To: Chevelle-list@chevelles.net Subject: [Chevelle-list] Back in the Day Reminisicing at the tender age of 17 working in the local burger joint and working the night shift when the night porter Pee Wee drove up with his new 1969 Chevelle SS , Black with Red interior and red stripes, with 396-375 and four on the floor with eyebrows on the headlights?? - Yahoo! Music Unlimited - Access over 1 million songs. Try it free.
Re: [Chevelle-list] Back in the Day / Float the Valves?
I use to road race motorcycles and floating the valves wasnt a good thing. it meant your valves springs were no longer doing there job and the valves werent seated when they should have been and compression and horsepower were going out the exhaust.I always thought when looking at dyno run charts in magazinesthat the horse power dropped at or just before"Red Line" because the valves were starting to float?. It would be niceto hear more about it from all you knowledgable guys on the list.Jimmy.C - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Thursday, October 13, 2005 12:55 PM Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Well I am 41, been around cars my whole life and have not heard the term "float the valves" doesn't sound like a good thing to do, but what is it? My guess - depressing clutch to shift, but intenially not taking your foot off the gas? Thank you, Krister Meister Bloomingdale, IL '66 SS #'s-Original Message-From: Bob Haggard [EMAIL PROTECTED]To: The Chevelle Mailing List Chevelle-list@chevelles.netSent: Wed, 12 Oct 2005 21:48:21 -0400Subject: Re: [Chevelle-list] Back in the Day When I was in the Air Force (66-70) a friend had a red Chevelle SS with 396/350hp. It was a beautiful car and what I always remember was he liked to shift when the valves would float. I was amazed that it stayed together since a high school friend had a 63 Impalla (1963) with 409/425hp that would float the valves when he missed a shift and it would usually end up back at the Chevy dealer to replace bent pushrods and other assorted parts. Bob Haggard - old fart From: Bob Fisher [EMAIL PROTECTED]com Date: 2005/10/12 Wed PM 04:25:42 EDT To: Chevelle-list@chevelles.net Subject: [Chevelle-list] Back in the Day Reminisicing at the tender age of 17 working in the local burger joint and working the night shift when the night porter Pee Wee drove up with his new 1969 Chevelle SS , Black with Red interior and red stripes, with 396-375 and four on the floor with eyebrows on the headlights?? - Yahoo! Music Unlimited - Access over 1 million songs. Try it free.
Re: [Chevelle-list] Back in the Day / Float the Valves?
Yeah, me too. I've also always been careful of hitting rev limiters on other cars I've owned. I am considering a rev limiter for the Chevelle, but have always wonder if a rev limiter can cause harm to an engine as well? Or is it just fouled plugs at worst? Does anyone have an opinion on that? Of course, even if the rev limiter caused some damage, it's probably not as serious as over revving an engine I'm sure. There's no KABOOM! when you hit a rev limiter. Just wondering if there might be long term harm. Thanks, Matt At 11:29 AM 10/13/2005, you wrote: Thank you for the insight, it seems like harm can only come from this and no advantage gained. I have always been won to respect the redline in cars, motorcycles, etc. and the few times over was a whew it stayed together Thanks again, Krister -Original Message- From: Craig Ellis [EMAIL PROTECTED] To: The Chevelle Mailing List Chevelle-list@chevelles.net Sent: Thu, 13 Oct 2005 14:01:27 -0400 Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Nope...it's basically reving the motor past the point where the valve springs can close the valve in time for the next compression or exhaust stroke. It's a bad thing...especially if the piston slaps a valve. That's one of the reasons valve seat spring load is important and why you match springs to cam, etc. Craig E. - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Thursday, October 13, 2005 1:55 PM Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Well I am 41, been around cars my whole life and have not heard the term float the valves doesn't sound like a good thing to do, but what is it? My guess - depressing clutch to shift, but intenially not taking your foot off the gas? Thank you, Krister Meister Bloomingdale, IL '66 SS #'s -Original Message- From: Bob Haggard [EMAIL PROTECTED] To: The Chevelle Mailing List Chevelle-list@chevelles.net Sent: Wed, 12 Oct 2005 21:48:21 -0400 Subject: Re: [Chevelle-list] Back in the Day When I was in the Air Force (66-70) a friend had a red Chevelle SS with 396/350hp. It was a beautiful car and what I always remember was he liked to shift when the valves would float. I was amazed that it stayed together since a high school friend had a 63 Impalla (1963) with 409/425hp that would float the valves when he missed a shift and it would usually end up back at the Chevy dealer to replace bent pushrods and other assorted parts. Bob Haggard - old fart From: Bob Fisher [EMAIL PROTECTED] Date: 2005/10/12 Wed PM 04:25:42 EDT To: Chevelle-list@chevelles.net Subject: [Chevelle-list] Back in the Day Reminisicing at the tender age of 17 working in the local burger joint and working the night shift when the night porter Pee Wee drove up with his new 1969 Chevelle SS , Black with Red interior and red stripes, with 396-375 and four on the floor with eyebrows on the headlights?? - Yahoo! Music Unlimited - Access over 1 million songs. Try it free.
Re: [Chevelle-list] Back in the Day / Float the Valves?
I decided years ago when I put a 6500 RPM cam in my BB motor that I'd eyeball limit to 6000. I'm not draggin' for money and I'd just as soon not grenade my 1970 vintage block just to spank some yahoo with three earings and a '98 Mustang. If I can't git 'r donewith 6k, well, I'll have to accept it. Besides, it doesn't matter how fast some lesser car goes - mine is a Chevelle with fatblockand a Muncie - that makes it more better by definition. Chevelle Snob - Original Message - From: Matthew Post To: The Chevelle Mailing List Sent: Thursday, October 13, 2005 2:59 PM Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Yeah, me too. I've also always been careful of hitting rev limiters on other cars I've owned. I am considering a rev limiter for the Chevelle, but have always wonder if a rev limiter can cause harm to an engine as well? Or is it just fouled plugs at worst? Does anyone have an opinion on that?Of course, even if the rev limiter caused some damage, it's probably not as serious as over revving an engine I'm sure. There's no KABOOM! when you hit a rev limiter. Just wondering if there might be long term harm.Thanks,MattAt 11:29 AM 10/13/2005, you wrote: Thank you for the insight, it seems like harm can only come from this and no advantage gained.I have always been won to respect the redline in cars, motorcycles, etc. and the few times over was a "whew it stayed together"Thanks again,Krister-Original Message-From: Craig Ellis [EMAIL PROTECTED]To: The Chevelle Mailing List Chevelle-list@chevelles.netSent: Thu, 13 Oct 2005 14:01:27 -0400Subject: Re: [Chevelle-list] Back in the Day / Float the Valves?Nope...it's basically reving the motor past the point where the valve springs can close the valve in time for the next compression or exhaust stroke. It's a "bad thing"...especially if the piston slaps a valve. That's one of the reasons valve seat spring load is important and why you match springs to cam, etc.Craig E. - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Thursday, October 13, 2005 1:55 PM Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Well I am 41, been around cars my whole life and have not heard the term "float the valves" doesn't sound like a good thing to do, but what is it? My guess - depressing clutch to shift, but intenially not taking your foot off the gas? Thank you, Krister Meister Bloomingdale, IL '66 SS #'s -Original Message- From: Bob Haggard [EMAIL PROTECTED] To: The Chevelle Mailing List Chevelle-list@chevelles.net Sent: Wed, 12 Oct 2005 21:48:21 -0400 Subject: Re: [Chevelle-list] Back in the Day When I was in the Air Force (66-70) a friend had a red Chevelle SS with 396/350hp. It was a beautiful car and what I always remember was he liked to shift when the valves would float. I was amazed that it stayed together since a high school friend had a 63 Impalla (1963) with 409/425hp that would float the valves when he missed a shift and it would usually end up back at the Chevy dealer to replace bent pushrods and other assorted parts. Bob Haggard - old fart From: Bob Fisher [EMAIL PROTECTED] Date: 2005/10/12 Wed PM 04:25:42 EDT To: Chevelle-list@chevelles.net Subject: [Chevelle-list] Back in the Day Reminisicing at the tender age of 17 working in the local burger joint and working the night shift when the night porter Pee Wee drove up with his new 1969 Chevelle SS , Black with Red interior and red stripes, with 396-375 and four on the floor with eyebrows on the headlights?? - Yahoo! Music Unlimited - Access over 1 million songs. Try it free.
Re: [Chevelle-list] Back in the Day / Float the Valves?
Any Chevelle is just naturally better!
- Original Message -
From:
Craig Ellis
To: The Chevelle Mailing List
Sent: Thursday, October 13, 2005 2:09
PM
Subject: Re: [Chevelle-list] Back in the
Day / Float the Valves?
I decided years ago when I put a 6500 RPM cam in my BB
motor that I'd eyeball limit to 6000. I'm not draggin' for money and I'd just
as soon not grenade my 1970 vintage block just to spank some yahoo with three
earings and a '98 Mustang. If I can't git 'r
donewith 6k, well, I'll have to accept it.
Besides, it doesn't matter how fast some lesser car
goes - mine is a Chevelle with fatblockand a Muncie - that makes it more
better by definition.
Chevelle Snob
- Original Message -
From:
Matthew
Post
To: The Chevelle Mailing List
Sent: Thursday, October 13, 2005 2:59
PM
Subject: Re: [Chevelle-list] Back in
the Day / Float the Valves?
Yeah, me too. I've also always been careful of hitting
rev limiters on other cars I've owned. I am considering a rev limiter
for the Chevelle, but have always wonder if a rev limiter can cause harm to
an engine as well? Or is it just fouled plugs at worst? Does
anyone have an opinion on that?Of course, even if the rev limiter
caused some damage, it's probably not as serious as over revving an engine
I'm sure. There's no KABOOM! when you hit a rev limiter. Just
wondering if there might be long term harm.Thanks,MattAt
11:29 AM 10/13/2005, you wrote:
Thank you for the
insight, it seems like harm can only come from this and no advantage
gained.I have always been won to respect the redline in
cars, motorcycles, etc. and the few times over was a "whew it stayed
together"Thanks
again,Krister-Original
Message-From: Craig Ellis [EMAIL PROTECTED]To: The
Chevelle Mailing List Chevelle-list@chevelles.netSent: Thu, 13
Oct 2005 14:01:27 -0400Subject: Re: [Chevelle-list] Back in the Day /
Float the Valves?Nope...it's basically reving
the motor past the point where the valve springs can close the valve in
time for the next compression or exhaust stroke. It's a "bad
thing"...especially if the piston slaps a valve. That's one of the reasons
valve seat spring load is important and why you match springs to cam,
etc.Craig E.
- Original Message -
From: [EMAIL PROTECTED]
To: Chevelle-list@chevelles.net
Sent: Thursday, October 13, 2005 1:55 PM
Subject: Re: [Chevelle-list] Back in the Day / Float the
Valves?
Well I am 41, been around cars my whole life and have not heard the
term "float the valves" doesn't sound like a good thing to do, but
what is it? My guess - depressing clutch to shift, but intenially
not taking your foot off the gas?
Thank you,
Krister Meister
Bloomingdale, IL
'66 SS #'s
-Original Message-
From: Bob Haggard [EMAIL PROTECTED]
To: The Chevelle Mailing List
Chevelle-list@chevelles.net
Sent: Wed, 12 Oct 2005 21:48:21 -0400
Subject: Re: [Chevelle-list] Back in the Day
When I was in the Air Force (66-70) a friend had a red Chevelle
SS with
396/350hp. It was a beautiful car and what I always remember
was he liked to
shift when the valves would float. I was amazed that it stayed
together since a
high school friend had a 63 Impalla (1963) with 409/425hp that would
float the
valves when he missed a shift and it would usually end up back at
the Chevy
dealer to replace bent pushrods and other assorted parts.
Bob Haggard - old fart
From: Bob Fisher [EMAIL PROTECTED]
Date: 2005/10/12 Wed PM 04:25:42 EDT
To: Chevelle-list@chevelles.net
Subject: [Chevelle-list] Back in the Day
Reminisicing at the tender age of 17 working in the local
burger joint and
working the night shift when the night porter Pee Wee drove up
with his new
1969 Chevelle SS , Black with Red interior and red stripes, with
396-375 and
four on the floor with eyebrows on the headlights??
-
Yahoo! Music Unlimited - Access over 1 million songs. Try
it free.
RE: [Chevelle-list] Back in the Day / Float the Valves?
A good rev limiter shouldnt do any harm unless you continually run it against the limit which, I suppose, could foul plugs in time. The idea is to cut spark to cylinders so the engine wont rev any higher I dont think professional class drag race cars use em, maybe Pro Stock not sure, but NASCAR sure uses em. Dale McIntosh 67 El Camino 1967 ChevelleReference CDnow available! ACES #1709/TC Gold #92 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Matthew Post Sent: Thursday, October 13, 2005 2:00 PM To: The Chevelle Mailing List Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Yeah, me too. I've also always been careful of hitting rev limiters on other cars I've owned. I am considering a rev limiter for the Chevelle, but have always wonder if a rev limiter can cause harm to an engine as well? Or is it just fouled plugs at worst? Does anyone have an opinion on that? Of course, even if the rev limiter caused some damage, it's probably not as serious as over revving an engine I'm sure. There's no KABOOM! when you hit a rev limiter. Just wondering if there might be long term harm. Thanks, Matt At 11:29 AM 10/13/2005, you wrote: Thank you for the insight, it seems like harm can only come from this and no advantage gained. I have always been won to respect the redline in cars, motorcycles, etc. and the few times over was a whew it stayed together Thanks again, Krister -Original Message- From: Craig Ellis [EMAIL PROTECTED] To: The Chevelle Mailing List Chevelle-list@chevelles.net Sent: Thu, 13 Oct 2005 14:01:27 -0400 Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Nope...it's basically reving the motor past the point where the valve springs can close the valve in time for the next compression or exhaust stroke. It's a bad thing...especially if the piston slaps a valve. That's one of the reasons valve seat spring load is important and why you match springs to cam, etc. Craig E. - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Thursday, October 13, 2005 1:55 PM Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Well I am 41, been around cars my whole life and have not heard the term float the valves doesn't sound like a good thing to do, but what is it? My guess - depressing clutch to shift, but intenially not taking your foot off the gas? Thank you, Krister Meister Bloomingdale, IL '66 SS #'s -Original Message- From: Bob Haggard [EMAIL PROTECTED] To: The Chevelle Mailing List Chevelle-list@chevelles.net Sent: Wed, 12 Oct 2005 21:48:21 -0400 Subject: Re: [Chevelle-list] Back in the Day When I was in the Air Force (66-70) a friend had a red Chevelle SS with 396/350hp. It was a beautiful car and what I always remember was he liked to shift when the valves would float. I was amazed that it stayed together since a high school friend had a 63 Impalla (1963) with 409/425hp that would float the valves when he missed a shift and it would usually end up back at the Chevy dealer to replace bent pushrods and other assorted parts. Bob Haggard - old fart From: Bob Fisher [EMAIL PROTECTED] Date: 2005/10/12 Wed PM 04:25:42 EDT To: Chevelle-list@chevelles.net Subject: [Chevelle-list] Back in the Day Reminisicing at the tender age of 17 working in the local burger joint and working the night shift when the night porter Pee Wee drove up with his new 1969 Chevelle SS , Black with Red interior and red stripes, with 396-375 and four on the floor with eyebrows on the headlights?? - Yahoo! Music Unlimited - Access over 1 million songs. Try it free.
RE: [Chevelle-list] Back in the Day / Float the Valves?
As others have already said, floating them is not good in most cases. If you have lots of valve clearance, this can self limit the revolutions so that you don't break something really bad, like a rod or crank! Since the valves don't seal the cylinder, you will lose power and should not over-rev the engine. Of course, most high performance engines only have a tiny bit of clearance, so this is usually a bad thing. Also, floating the valves stresses the valve springs big time and can lead to failure. This could be breakage or weakening - which will mean they will float even earlier if you keep doing it. The power drop is just from the system design. Valve timing, air flow, and other factors determine the torque at each RPM, and the torque starts to drop at some point and it continues to drop as RPM increases from then on because that is how the dynamics work. Because the formula for horsepower is based on torque and RPM (HP=TQ*RPM/5252), horsepower peaks later, but also eventually drops off. Valve float would kill power, but generally would happen after red line, and long after all peak power numbers - unless the springs are bad or incorrect. Brad Waller ([EMAIL PROTECTED]) '66 Corvette | 327/dead | 4-speed | Wilwood Brakes | 245/45/16 BFG R1'67 Chevelle | ex-SS396 | 355/700R4 | F-Body Brakes| 275/40/17 Kumho MX From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of jimSent: Thursday, October 13, 2005 1:00 PMTo: The Chevelle Mailing ListSubject: Re: [Chevelle-list] Back in the Day / Float the Valves? I use to road race motorcycles and floating the valves wasnt a good thing. it meant your valves springs were no longer doing there job and the valves werent seated when they should have been and compression and horsepower were going out the exhaust.I always thought when looking at dyno run charts in magazinesthat the horse power dropped at or just before"Red Line" because the valves were starting to float?. It would be niceto hear more about it from all you knowledgable guys on the list.Jimmy.C
RE: [Chevelle-list] Back in the Day / Float the Valves?
Thanks Dale. That's what I figured. At 03:06 PM 10/13/2005, Dale wrote: A good rev limiter shouldnt do any harm unless you continually run it against the limit which, I suppose, could foul plugs in time. The idea is to cut spark to cylinders so the engine wont rev any higher I dont think professional class drag race cars use em, maybe Pro Stock not sure, but NASCAR sure uses em. Dale McIntosh 67 El Camino 1967 Chevelle Reference CD now available! ACES #1709/TC Gold #92 From: [EMAIL PROTECTED] [ mailto:[EMAIL PROTECTED]] On Behalf Of Matthew Post Sent: Thursday, October 13, 2005 2:00 PM To: The Chevelle Mailing List Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Yeah, me too. I've also always been careful of hitting rev limiters on other cars I've owned. I am considering a rev limiter for the Chevelle, but have always wonder if a rev limiter can cause harm to an engine as well? Or is it just fouled plugs at worst? Does anyone have an opinion on that? Of course, even if the rev limiter caused some damage, it's probably not as serious as over revving an engine I'm sure. There's no KABOOM! when you hit a rev limiter. Just wondering if there might be long term harm. Thanks, Matt At 11:29 AM 10/13/2005, you wrote: Thank you for the insight, it seems like harm can only come from this and no advantage gained. I have always been won to respect the redline in cars, motorcycles, etc. and the few times over was a whew it stayed together Thanks again, Krister -Original Message- From: Craig Ellis [EMAIL PROTECTED] To: The Chevelle Mailing List Chevelle-list@chevelles.net Sent: Thu, 13 Oct 2005 14:01:27 -0400 Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Nope...it's basically reving the motor past the point where the valve springs can close the valve in time for the next compression or exhaust stroke. It's a bad thing...especially if the piston slaps a valve. That's one of the reasons valve seat spring load is important and why you match springs to cam, etc. Craig E. - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Thursday, October 13, 2005 1:55 PM Subject: Re: [Chevelle-list] Back in the Day / Float the Valves? Well I am 41, been around cars my whole life and have not heard the term float the valves doesn't sound like a good thing to do, but what is it? My guess - depressing clutch to shift, but intenially not taking your foot off the gas? Thank you, Krister Meister Bloomingdale, IL '66 SS #'s -Original Message- From: Bob Haggard [EMAIL PROTECTED] To: The Chevelle Mailing List Chevelle-list@chevelles.net Sent: Wed, 12 Oct 2005 21:48:21 -0400 Subject: Re: [Chevelle-list] Back in the Day When I was in the Air Force (66-70) a friend had a red Chevelle SS with 396/350hp. It was a beautiful car and what I always remember was he liked to shift when the valves would float. I was amazed that it stayed together since a high school friend had a 63 Impalla (1963) with 409/425hp that would float the valves when he missed a shift and it would usually end up back at the Chevy dealer to replace bent pushrods and other assorted parts. Bob Haggard - old fart From: Bob Fisher [EMAIL PROTECTED] Date: 2005/10/12 Wed PM 04:25:42 EDT To: Chevelle-list@chevelles.net Subject: [Chevelle-list] Back in the Day Reminisicing at the tender age of 17 working in the local burger joint and working the night shift when the night porter Pee Wee drove up with his new 1969 Chevelle SS , Black with Red interior and red stripes, with 396-375 and four on the floor with eyebrows on the headlights?? - Yahoo! Music Unlimited - Access over 1 million songs. Try it free.
RE: [Chevelle-list] Back in the Day / Float the Valves?
Pro stock cars bikes definitely use them. At 05:06 PM 10/13/2005, you wrote: A good rev limiter shouldnt do any harm unless you continually run it against the limit which, I suppose, could foul plugs in time. The idea is to cut spark to cylinders so the engine wont rev any higher I dont think professional class drag race cars use em, maybe Pro Stock not sure, but NASCAR sure uses em.
