A question for you guys who have done a turbo setup in a civic/delsol/crx and kept the AC - I have a fully rebuilt turboed b18c1 in a Del Sol and it is a REALLY tight fit with the big turbo and the A/C compressor and fan all crammed up front. The work is all careful and professional (Sportcar Motion did everything).

The weird thing is we're still running hot - but not at idle - only at high speeds or when there's enough load on the engine. Things we're investigating:

-stock temp gauge is wacko
-ecu has the car running lean @3-4K and hence hot
-water pump is dying


hopefully one of these will turn out to be the problem - but if not i'm being told that they may have to pull the A/C. We've already spent so much time and energy to get this setup to work w/AC installed that I would hate to pull it at this point - so if any of you have done tight turbo setups that kept the A/C please give us any pointers you might have to help troubleshoot.

Thanks in advance
chris


PS. The other odd thing is that after the original turbo install the car would overheat in traffic but not at freeway speeds. After switching out slimfan for the stock one and rebuilding the entire engine - it now overheats after ~2-3 miles on the freeway. In both cases the A/C was installed. Huh? Does not compute!

 

anyone?

 

I dont see how AC would be the cause unless you run it 24/7 and even then i dont know.

Check for air bubbles and what not. You guys just have a cooling system, probably a small leak somewhere. Also try getting an aftermarket gauge, they read better.

 

fully rebuilt and you have a water pump dying?? running lean with turbo setup that is a no no... you might want to recheck the ecu map prog.

 

Chris, yank the AC out!!! j/k

What ecu are you currently running ?

 

it's the p28 Noel - but they took out the hondata and tried the powerfc setup - it ran a little cooler but didn't make much difference. don't think the A/C is the problem either.

waterpump is working fine. thermostat is opening/closing fine. fan is turning on/off fine. stays cool at idle fine. coolant system bled many times. koyo radiator. block is like-new and machined nice n flat. head too. brand new headgasket. perfect compression. etc...

seems like the head isn't getting cooled properly - just can't figure out why. so strange... :-(