<VV> Engine Bay Air temperature experiment

Daniel Monasterio González dmonasterio at hotmail.com
Fri May 22 20:07:14 EDT 2015



On 22/05/15 18:20, "kevin nash via VirtualVairs"
<virtualvairs at corvair.org> wrote:

> I've been fine tuning my EFI set-up recently and was curious as to how
>hot the engine compartment air was getting
>while the engine was running during normal cruising. The engine
>compartment air temperature was a particular concern
>to me as I don't have a heat shield on the turbo (yet) and, until very
>recently hadn't bothered to put on the rear engine
>compartment seal either. Anyways, I thought I remembered someone on this
>board had asked about engine compartment
>air temps  sometime ago and I just got done doing the test, I thought I
>would share my results.
>Since I was concerned about the air temp just before it enters the air
>cleaner, I put a digital thermometer probe on top
>of the throttle body's, not touching any metal, approximately 1" away
>from the air cleaner.
>Morning before starting engine and driving to work: T= 53F, 10 miles
>later, T=67F, head temperature was well below 300.
>Afternoon before starting engine and driving home: T=83F. stopped at gas
>station to get gas after 2 or 3 minutes of running-
>right after re-starting the car, T=97F. Continue on home, head
>temperature gets to 300 degrees, and the digital thermometer
>reads.... 82F. 
>I've done this same test 2 days in a row now, and have gotten the same
>results each day, and I also verified that the digital
>thermometer agrees well (within 1 degree) at 52F and 70F with our outdoor
>For curiosity's sake only!!
>Kevin Nash
>63 Turbo, EFI daily driver
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