BJ91T

Hello CL, I recently purchased a sc300 that was in pieces. I am looking for the correct injectors and intake manifold to put the car back together all stock. What are the differences between all years sc300's as far as injectors and upper/lower intakes and throttle body's are concerned. My car is a 97 So i know i am supposed to use the Hot wire maf which I have. But I am lost as to what injectors I am looking for.


Thanks
BJ

KahnBB6

iTrader: (5)

I don't have many specifics but the injectors and other hardware will probably still be the same 330cc spec between 1992-1997 models since the design of the 2JZ-GE didn't change significantly until 1998 models (they lost EGR in favor of the Variable Valve Timing with Intelligence system, for instance). It wouldn't surprise me if 1998-2000 SC300's still used the same 330cc injectors too.

The upper and lower intakes should be the same until you get to 1998-2000 models. If there are minor EGR and vac line differences I do not know.

Same goes for the throttle bodies. They appear to be the same but there may possibly be minor differences as to vac lines, etc.

Electronics, I believe, are the main things that changed between 1995 and 1996-97 models for OBD2. It was 1998 where the 2JZ-GE engine itself changed very significantly.

Others will know more about this.

Ali SC3

iTrader: (10)

92-97 the upper intakes are pretty much the same.

92-95 the lower runner are the normal kind with the normal injectors (brown colored)

96-97 they added a large vacuum line to the lower runners for emissions and changed the style of injectors from the normal brown kind to these ones that are larger on the bottom with larger o-rings and they are blue in color.
They also changed the idle valve on the throttle body to have a large vac line and that line runs to the lower runners. also 96 and 97 have an extra hot start VSV on the fuel pressure regulator that 92-95 does not have but this is not that important it can be bypassed.


so in short odb2 96-97 has different lower runners, different shaped injectors (still 330cc), different throttle idle valve on the throttle body, and you will have to get the odb2 style of injectors when using these runners.

BJ91T

Thanks! That is what I was looking for. I have both sets of runners on hand do the early style injectors plug in the same as the late ones? same clip and impedance? assuming the correct runners are in place. Just wondering as I know the Brown/red injectors are all over the junkyards here

Ali SC3

iTrader: (10)

same clips and all 2jzge injectors are high impedance. the brown ones fit in the earlier runners which is the more desirable setup, and the blue ones fit onto the later runners that came with your car.

you can use either setup, just have to match injectors to lower runners, and if you don't have the older throttle body just put a good large cap on the vacuum hose line coming off the idle valve, its not needed either.

SCereal

iTrader: (4)

Glad Ali chimed in, he can explain anything. I was going to bring up the lower runner and injector issues (which I learned about from him).

97 seems to be a bastard year, there's alot of little nitpicking issues that most of the time don't go our way for modding stuff. Shame you're early, I'll have all this stuff coming off my car when I go turbo this summer. lol

Ali SC3

iTrader: (10)

yeah 96 and 97 are a bit "tricky" with what got changed, but the greatest thing about them is they consistently come with heated o2 sensors which don't need upgrading for the gte ecu mod, and also they come with a 2nd oil sensor on the crank already which makes slapping a gte head on and going distributor less something you can even do without pulling the motor to change the oil pump out.