so my trans housing was cracked and my buddy put my si gears in a l3-1 trans can anyone tell me is this a good thing or a bad thing and if there will be a giant diffrence in how the car will run.

 

yes it will eat more gas but you will have a easier time getting up the hills...!!!

 

Alright thanks bro

 

Does anyone know why will it help going up hills since I am a noob when it comes to trans and if there are any advantages besides giving me a better drive up hills.

 

car will accelerate faster, its geared lower, so it can rev higher for lower speeds

 

Are there any cons to doing this setup? Is there any danger for the trans to blow?

 

make sure he knows wtf he is doing to begin with...!!!

 

Ya its done the car is running clean nice acceleration 2000 to about 5000 rpm so far its been running good

 

Did the diff get swapped along with the gears? Or at least the ring gear?

 

Ya the diff was swapped along with gears.

 

I have another question my rpm's stay kind of high between 1200 and 1500 does anyone know what could be the issue it does this at idle.

 

The tranny is fully mechanical so your high idle is being caused by something else. Ever messed with the IACV before? Idle screw?

 

clean your throttle body,iacv and adjust properly your idle screw and throttle cable...!!!

 

Good point, my car was idling between 1k and 3k rpms last week and it was because the cable wasn't adjusted correctly and the butterfly plate was sticking.

 

Alright ill check it out thanks guys ill let you know if this fixes the issue

 

Could it be timing related as well

 

No, even if your ignition timing is set to FULL ADVANCE it wouldn't raise your idle that high.

Make sure that your throttle cable wasn't adjusted to tightly, it could be holding it partially open.

With the engine running, take off the intake piping and check to see if the plate is slightly open.

If you can't push it closed and hear the idle drop then you need to check iacv, idle adjust, and so on...

Oh and I'm just curious, if this guy put the SAME si gears and the SAME differential with SAME ring gear in another L3 casing, then how did this change his gearing? I've never head of changing cases to obtain lowering gearing ratios....

 

Okay so I tested the iacv unplugged it and then the rpm needle was bouncing up and down and now that I have been running it for a few days its starts to bounce up and down at idle once in a while doesn't do it all the time I'm gone take the iacv off and clean it ill let you guys know what happens.

 

so Its fixed thanks for all the help guys.