TSiawd

A friend of mine is having a series 4 Jspec engine installed and he says they make 200 hp stock. Also I'm supposed to run him when it gets finished and his mods along with the Jspec are: hks intake, full RB exhaust, and walbro 255 around how much hp will he be making?

TonyTurboII

They make the same 182 hp as stock. Only the 89-91's make 200 hp. Guess numbers is worthless, just have it dyno'd.

TSiawd

Seeing that you have similar mods, have you ran at the track and if so what was your time. I'm just tryin to get an idea of what to expect.

TonyTurboII

Never ran on a track. Ran on a g-tech though. I got a 14.8 with no launch, plus I blew my motor 3/4 of the way into the run.

TSiawd

Thanks, I guess he won't be to much of a challenge then.

Grimlock

somewhere around 230-250 hp i would say! he's gonna be quick. with those mods he could get a mid to high 13 sec. 1/4 mile i believe. at least thats what i have seen on this forum.

TurboSmoke

i know a guy that gets those motors imported from japan. he can get anything any time he can get 20B's all day long. he is getting me a 3rd gen 13b TT tranny comp, wireing harn, Greddy T78-33d turbos and a turbo smart BOV all imported from japan for $4100 and thats to convert my 91 n/a to a TT, anyways he said that those things would hit 215 on a dino.

Grizzly

What is a J spec engine? i know about 13bt,13b-re,13b-rew but i hear the name "j spec" all the time?

presetlimits

'japanese spec' ..they are engines imported directly from japan. usually taken out of cars with around 30K miles or so on them.

Coolidge

J-spec means "japan spec" also called JDM (japan domestic market).
It's a stock replacement engine usually from a totalled RX-7 over there.
For 2nd gens, the only difference between the jspec and us-spec engines are no EGR on the jspecs. Same power.

Grizzly

Ok, most of our Rx's are Jap inports as there where very few Genuine Uk examples left and we got both the Hard and soft top T2's but our Gen 3's are only 245bhp (and less than 100 left on the road)