Rx-7.com Suggestion For Egt
06-12-2003, 12:31 AM
#17
Senior Member
Join Date: Oct 2002
Posts: 1,019
what kind of EGT do you have? the threads for EGTs are usually a pipe thread (NPT) meaning that they taper. Let me know what EGT you have and i'll let you know what tap size you need for the sender. I still suggest you put it in the manifold. You can do this by drilling while the car is idling before it gets hot, just be careful under there. Use a high enough speed on the drill to keep the shavings small and they will blow out of the turbine and through the exhaust.
06-12-2003, 10:06 AM
#18
Senior Member
Thread Starter
Join Date: Apr 2002
Location: NASA/JSC - Clear Lake, TX
Posts: 870
i could, but i think i'll just stick with the RP suggestion, no harm done. its all relative anyway, for my car at least. if i know the normal operating downpipe EGT, then relative highs and lows compared to this temp should give me a good idea of if i'm lean or rich, assuming no major changes in heat transfer have taken place.
I have the GReddy 2" EGT gauge. They dont look like they taper, though. However, the nut welded on the DP is sounding like a good idea, i might just hit up midus and have them drill a hole and weld the nut on for like $10.
I have the GReddy 2" EGT gauge. They dont look like they taper, though. However, the nut welded on the DP is sounding like a good idea, i might just hit up midus and have them drill a hole and weld the nut on for like $10.
06-12-2003, 10:56 AM
#19
Senior Member
Join Date: Oct 2002
Posts: 1,019
putting the EGT in the downpipe will decrease the response and not give you an accurate reading. They probably told you that because they don't want to be responsible for you screwing up your turbo. I on the other hand don't care, I'm only going to suggest the correct way to do it.
06-12-2003, 12:44 PM
#20
Senior Member
Join Date: Apr 2002
Location: Bay Area, California
Posts: 250
1/8 npt
egt is quite important for all the tuner and road racers out there. you can have perfect a/f ratio, and have an egt too high and can still pop your motor.
as for location, down pipe, manifold, or turbing hsg, all don't matter that much. Its just what your numbers are referenced off at. If you are comparing, dp to dp temps, you should tap yours into the dp. the closer to the exhaust port the higher the temperature will be, and slightly faster response as well.
egt is quite important for all the tuner and road racers out there. you can have perfect a/f ratio, and have an egt too high and can still pop your motor.
as for location, down pipe, manifold, or turbing hsg, all don't matter that much. Its just what your numbers are referenced off at. If you are comparing, dp to dp temps, you should tap yours into the dp. the closer to the exhaust port the higher the temperature will be, and slightly faster response as well.