<VV> Head Temp & Boost

[Bill Elliott]

In my experience, the OEM gauges are not very accurate car-to-car, but do serve as a good indication if something has changed on _your_ car.  Like you, 
I rarely hit 300...and only 350-375 or so when towing (and you can smell the engine)! Even when I threw a belt, the gauge never went above 400 though 
I'm pretty sure the engine was hotter than that.  

I'm certain either my gauge reads low or a lot of others read hot.

Evidence for the latter...in my track car at VIR (remember how hot that day was?) I had a balancer coming apart...and threw the belt three times before we 
figured it out. One of the last times, the smoke was rolling off the engine...just about as  hot as I've ever seen a Corvair engine... and yet the Autometer 
gauge was saying about 425. None of us believed this, so Rob Fike came over with his handheld.... 425 was accurate.

Bill

On Wed, 6 Apr 2005 16:14:34 -0500, J R Read_HML wrote:

>Man, you guys are running some pretty high head temps to my way of thinking. 
>Are you staying in BOOST all the time?

>My Rampside has a Spyder dash.  With a 110 back there, I typically run 
>between 275 and (maybe) hit 350.  I'm seeing numbers like 400, 450, and even 
>475 from you folks.  If I ever hit 450, I'd pull over to see why the engine 
>is not getting air.  I'd expect the aluminum heads to start getting pretty 
>soft around 500 - like the gaskets starting to make an impression on the 
>sealing surface.

>Now, my boost gauge NEVER goes above zero - but I expect that.

>Attachments (if any) are scanned with anti-virus software.

>Later, JR