J-Spec BP
 

i was wondering if a bp out j-spec 1990-1994 protege is the same as the pro lx bp in the us

and also if the trannys are the same cause i'm looking for a bp to put into my mx-3 and i can't afford a bpt right now

thanks

any1???? i need to know before i order it

i don't know....but Adam Payrot (member #8919) on www.miataforum.com is using a j-spec protege motor in his miata. you might try emailing him.
also i was thinking Braden at www.barelylegaltransplants.com might know as i thought he ordered a j-spec pro motor...???

cause i can get a j-spec bp alot cheaper and if i get the bpt i'm just gonna get rid of the stock turbo and put on the blt t3 kit

bp

whats the difference
i talked to Adam Payrot (member #8919) on www.miataforum.com(thanks protejay) and he has the j-spec in his miata and he said there is no difference

What's the difference? Depends on who you ask. Some people say that it has higher compression (9.5 vs 9.0/8.8), but I doubt it. Some say the cams are different. Again, I doubt it. I think the only differences are in timing and A/F ratios. The US Protege is tuned very conservatively, especially compared with Japanese and European versions, owing mostly to the varying and dismal quality of US gas.

Ask Braden about his tuning experience with his NA engine. I think he found as much HP as is missing between US and JDM engines (125 vs 130-135) just by playing with the spark and A/F ratios (mostly spark, IIRC).