If the leak is anywhere on the side of the neck or on the overflow hose or
nipple then it would be above the seat for the radiator cap and not present
much of a problem other than for some of the overflow not being sucked back
into the radiator when the engine cools down.
----- Original Message -----
From: Bryan Wyatt
To: Miata Power List
Sent: Wednesday, June 25, 2008 7:14 AM
Subject: Re: Pinhole Leak Near Radiator Neck
This one is on top of the radiator. I'm not sure exactly what the
culprit is, but I just see a slight deposit under the area where the overflow
hose and the neck below the radiator cap join.
-Bryan
--- On Wed, 6/25/08, Robert McElwee <[EMAIL PROTECTED]> wrote:
From: Robert McElwee <[EMAIL PROTECTED]>
Subject: Re: [Miata] Pinhole Leak Near Radiator Neck
To: "Keith Tanner" <[EMAIL PROTECTED]>
Cc: [email protected]
Date: Wednesday, June 25, 2008, 9:52 AM
I could not tell from his description (not sure if I put that in my
post or not) where his leak was (above or below the cap seal). I have not had
any cooling issues at all. Since the takeoff is on the bottom of the radiator I
shouldn't have air in the system.
On Wed, Jun 25, 2008 at 9:41 AM, Keith Tanner <[EMAIL PROTECTED]>
wrote:
The difference is that the Red Beast's "leak" only occurs when the
coolant system pressure is higher than the radiator cap pressure, wheras
Bryan's leak occurs as soon as any pressure is built up at all. And in both
cases, cooling suffers when there's air in the system.
Keith Tanner
Flyin' Miata
[EMAIL PROTECTED]
http://www.flyinmiata.com
1-800-FLY-MX5s (orders)
1-970-464-5600 (tech)
2008 FM Open House: August 14-17
------------------------------------------------------------------
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
Robert McElwee
Sent: Wednesday, June 25, 2008 5:59 AM
To: [EMAIL PROTECTED]
Cc: Miata Mailing List; Miata Power List
Subject: Re: [Miata] Pinhole Leak Near Radiator Neck
YMMV, but I've ran Red Beast without a overflow bottle for years
(too much weight). The level stays about an inch below the top of the coils
during that time and has caused no major issues. If your pressure stayed low
due to a leak your water would boil sooner and bubbles don't cool like liquid
does. Just make sure you keep your eyes on it. I've lived with this "leak" for
quite a while.
On Wed, Jun 25, 2008 at 7:08 AM, Bryan Wyatt <[EMAIL PROTECTED]>
wrote:
Hey all,
I'm about 99% sure I've got a pinhole leak at the neck
below the radiator cap (which I've recently replaced as a preventative
measure). I've noticed a small mineral deposit right below the small rubber
hose on the neck below the radiator cap. The leak is slight (I'm nowhere near
the "Low" mark, but it's obvious that I'm losing coolant, but only enough to
evaporate quickly).
Any ideas? Can I fix it? I'd rather not replace the
radiator.
-Bryan
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Robert McElwee and Blue Flash
"The 40 MPG Miata"
www.lightweightmiata.com/mpg
Lightweight Miata Forum:
www.lightweightmiata.com/forum
The Miata Trailer Project:
www.lightweightmiata.com/trailer
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