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Re: Hot under the Collar....er Hood
On Mon, 21 Aug 1995 STEADIRIC@aol.com wrote:
> Commanders and used it to measure the Cyl Head Temp at all five plugs,
> the block temp, the radiator, Underhood temp between the Rad and the
> engine, Exterior Temp and finally Boost. (Hmmmm... still had 10 channels
> left) What I found was not pretty.
> The NORMAL temp of the motor was: CHT 210, Rad 170, Block 205, Underhood
> 140, Ext Temp 88 and normal boost. This was the around town average.
> The High Boost Temps were UGLY: CHT 240!! Rad 180, Block 220 Underhood
> 150 Ext Temp 88 and 16PSI Boost. It took five min. for the Cyl Head
> temps to come back to a "Normal" Reading.
> To me this says we HAVE to run the 80C Theromstat. Under High Boost the
> head jumped 30F the block jumped 15F while the Radiator AND Underhood
> only moved 10F.
> I'm going with the 80C (174F) on tuesday and I'll report back later if
> this had any effect.
I would certainly condone more effective temp control, but I
don't think you need to get too alarmed. These temps look fairly normal
even under high boost compared to N/A Cadillac temps.
As for those other channels... Intercooler in and out would be
very interesting, and radiator in and out tells you how effective the
Graydon D. Stuckey
'86 Audi 5000 CS Turbo Quattro, GDS Racing Stage 1
'83 Mazda RX7 w/13B, GDS Racing Stage 58474