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two very good questions jeremy. :D maybe douglas can help us out. :wink: How much boost before pump, fpr, computer or injectors can't keep up and the mixture leans out? (i'll definitly be installing a wideband AFM when the turbo goes in) And when will the ECU trip out and hit fuel cut on an NA.

once i have stuffed this engine i'll rebuild with lower compression ration, stronger pistons and then........... 15 PSI?????

Thanks again sammy. Though i still think i'll give it a try....... Considering the age of my engine i would be happy with 140 hp I'm only looking at running 5-6 psi at the most. By my calculations this turbo should easily be able to hold 5-6 psi to the red line..... and the whole point of adding the...

Thanks again guys, heaps of usefull info :D I thought an intercooler would probably be essential..... sammy..... you say that the 12A should be good for about 200hp.... won't that be alot more than i will ever use. Idealy i would like full boost to be in by 3000 rpm and it would be even better if bo...

do you rekon i could get away with 5 psi without an intercooler? :? how would i go about getting less boost out of this turbo...... i'm not exactly sure how boost controllers work but from what i understand they can only be used to make the wastegate actuator open at a higher boost pressure than it ...

Gday, I've just scored a toyota CT12A turbo. I'm under the impression that the wastegate controls maximum boost..... is that right? These turbos come fitted in pairs to toyota 1J-GTE engines. they all run at 12 psi standard. The toyota 1J is a 2.5 litre straight six, the red line is approx 7.5k rpm ...

BTW. I've just had a look through the 1992 USDM subaru workshop manual and to check the water temp sensor it says

Measure resistance between water temp. sensor terminals.
Specified resistance:
2.0-3.0k ohms (20'C (68'F))
0.3-0.4k ohms (80'C (176"F))

thanks again.

just reset the ecu this morning (had not been done since i "fixed" exhaust), seems to have nearly fixed the problem

Cheers, I'll check it out tomorrow.

Do you know what voltage's it should be putting out when hot/cold?

There is one more symptom that started at the same time as the erratic idle that i should have mentioned before. When cold the engine has a hell of alot more power than it ever has from 1000 - 4000 rpm But when the engine is at operating temp it will missfire when trying to accelerate from 1000 - 20...

Just want to start of by thanking you guys, this site is fantastic. Well when i first bought my '92 liberty FWD ej22, about 2 months ago i got rid of the that stupid intake silencer thingy and the original pannel filter. Sounds great. not sure if i got any performance from it but it certainly sounds...