It is already at 32
degrees. 10 initial + 22 centrifugal. Doesn’t the vacuum advance help with gas
mileage? It does sound like maybe the vacuum advance is too much. Is that why
you said to disconnect it for now? I have tried premium and it didn’t make
much difference. I think I’ll try a few of the things mentioned here both
separately and together and see what happens. Thanks all for the knowledge and
help on this There is a really great knowledge base here. Hope everyone has a
great Thanksgiving and GOD Bless!
-----Original
Message-----
From: Capt
Crunch [mailto:[EMAIL PROTECTED]
Sent: Wednesday, November
26, 2003 1:59
PM
To: Chevelle
List
Subject: Re: [Chevelle-list] Detonation
question
Too much advance Brian... like
Clint said pull the total back to the 32-36 degree area. I would say more like
32 if you want to run your current fuel.
First thing first brian
disconnect the vac advance for now cause it will make no difference at WOT or
for total advance. I assume your engine is liking 10 degrees inital timing
more then 6 or 8 degrees? If that is the case leave it at ten. Then change
your centrifugal to get you total advance (initial + centrifugal) to
equal 32 degrees.
----- Original Message
----
Sent:
Wednesday, November 26,
2003 2:24
PM
To: The
Chevelle Mailing List
Subject: RE:
[Chevelle-list] Detonation question
Yes,
it seems to do it taking off from a start up hill a little heavy footed and
when accelerating without downshifting. OK, Dumb question. Do I need more or
less timing? It's been a long, short week.
Brian Zack
'70
Chevelle Malibu
mailto:[EMAIL PROTECTED]
-----Original Message-----
From: Tom and Sue Tomlinson
[mailto:[EMAIL PROTECTED]
Sent: Wednesday,
November 26, 2003 1:05
PM
To: The Chevelle Mailing
List
Subject: RE: [Chevelle-list] Detonation question
Your
original post said the detonation occurred under load. If this is
the
case, changing the vacuum advance may not help since it will not
be
kicked-in under load. In that case, you need to change the initial
(damper)
advance, and/or total advance by the springs and weights (or the
advance
curve).
Tom Tomlinson
-----Original
Message-----
From:
[EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Behalf Of Brian Zack
Sent: Wednesday, November 26,
2003 2:11
PM
To: The Chevelle Mailing
List
Subject: RE: [Chevelle-list] Detonation question
10
degrees at damper + 22 at weights and springs (I think) + 16
vacuum
advance. That is where I got 48. Is that not correct? Is total not
including
vacuum too?
Brian Zack
Structural
Technician
mailto:[EMAIL PROTECTED]
Dekker/Perich/Sabatini
architecture
interiors planning engineering
505.761.9700 fax
505.761.4222.
Visit our Website at
www.dpsabq.com
-----Original Message-----
From: Clint Hooper
[mailto:[EMAIL PROTECTED]
Sent: Wednesday,
November 26, 2003 11:51 AM
To: The Chevelle Mailing
List
Subject: Re: [Chevelle-list] Detonation question
How much
initial advance did you say the engine has?
Clint Hooper
H&H
Custom,owner
LT5 Registry Director
http://www.LT5Registry.net/
ACES
#1650
http://dalesplace.com/misc/friends/clint_hooper.htm
-----
Original Message -----
From: "Brian Zack"
<[EMAIL PROTECTED]>
Where would you suggest taking it out of?
Weights and springs? Vacuum
advance? Or initial? Or a little out of
each?
Brian Zack
'70 Chevelle Malibu
mailto:[EMAIL PROTECTED]
