1jz swap in SC400
#1
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1jz swap in SC400
Hey guys,I have a 1995 SC400. I did a 1jz auto swap, the car runs good,but i noticed that when i am cruising at about 60-65mph the RPM is kinda high at about 3500-3800rpm. Also when ever i floor it the rpm will run all the way to 8000rpm before it shifts gear,sometimes beyond if i dnt let up.
I am thinking its because of the Gear ratio in the SC400 and my fix will be to get a SC300 Diff. Any ideas or is anyone else having the same problem.
Also have a turbo log before 3400rpm,but thats a nother post,LOL.
I am thinking its because of the Gear ratio in the SC400 and my fix will be to get a SC300 Diff. Any ideas or is anyone else having the same problem.
Also have a turbo log before 3400rpm,but thats a nother post,LOL.
#2
i believe i read somewhere on the forums that if you do a swap in the 400 that you had tach issues. Not to sure probably need someone to clarify but i will look for the post.
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Your tach is calibrated for a V8 and you have an inline 6 so even though it works it reads higher than it should. A stock 1jz does not shift at/over 8k and rear end gears have NOTHING to do with when the tranny shifts and wouldnt make that huge of a difference in RPM anyway. However it can make a difference on turbo spool, if the gears are too steep it wouldnt build boost as easily.but your tach is reading off so you are being tricked into thinking its spooling later than it is anyway, they are probably spooled up by 2500rpm you just dont know it LOL Go get a cluster from an SC300 and try that.
Last edited by IOWNALEXUS; 04-07-10 at 04:29 PM.
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You could also try a tach adapter in the event an sc3 cluster is unavailable. I dont know about where you live but where I am it damn near impossible to find anything sc related!
Props on the 1jz-sc400 swap!
Props on the 1jz-sc400 swap!