So you only have one guage (or probe) and have it on #7? I guess I was thinking about putting mine before or after the turbo, I know that is not the most accurate because it is cooler, but I guess I'm not sure and thats why I started the thread. Now I don't know where to put it
I would say always before the turbo. On the discharge side of the turbo the temps are approx 300 degrees cooler, and this can vary quite a bit depending on housing size and trim. By the time you figure out what you have, either the motor is burnt or it's not making the power it could.
We usually place the probe right before the turbo. Run it right about 1525-1550 on pump gas.
If you are concerned about a particular cylinder then get a guage that allows you to input more than one probe. This way you can watch the lean cylinder and the overall temp.
Thanks for the advice. Do you think that temp range is standard for all turbo cars? Or what would it take to make that vary, other then location of probe, because everyone seems to say a different number? Thanks again
The temps will vary a little bit depending on timing, but if everything is tuned right, 1525-1550 is a good range for pump gas. Add another 100 on race gas. This is with the probe right before the turbo.
Anybody familiar with "K" probes compared with "J" probes? The "K" probes are a solid pole, and seem slow to react to temp changes. The "J" probe has the small wire tip which seems to react instantly. Anybody have any opinion on whether the "K" probe is too slow to give a "peak" temp reading in the quarter mile?