im assuming u talking bout me shattering my diff? haha.....i seem to find all the UNCOMMON problems

 

Dietz.... I assume. JB weld that **** BRO.....

JK thanks for doing all the leg work and thanks for all the info gents.

 

HAHA!! Yea its me Ramon so turns out the gs300 rear end i picked up last weekend wasnt a toyota/lexus rear end at all. i was in a hurry and just threw it in my car and then looked it over when i got home....not sure what it was out of. close, but no cigar. so now im on the hunt for another one...i hear Horrell has a couple sc rear ends...just need to call him.

 

Crap.... well have you checked the junk yards? troy says there are a few around. I will check with him to and see what he knows of. GL

 

so does the sc300 complete pumpkin bolt on to the gs400 without modifications?

 

I guess im a little confused here, is there a speed sensor in the Diff? or is all of the speedometer info grabbed from the wheels?

-EDIT-
Never mind me, just checked the sensor lineup on alldata and found out that I am indeed an idiot.

 

hello every one,
i really wanna help regarding my Lexus GS400 1998 i went garage to change my rear suspension and he did the replacement together with diff he put other one and from that time i had issue in my RPM its getting higher only with high speed with old diff i was reaching 2500 RPM with 80 MIL AND after the changes im reaching 3500 RPM with 80 MIL
please if some one have experience that before please advice and help
THANKS

 

Your new differential and old differential have different final drive gearing ratios.

 

Thanks Frelizard for your help

but it feet properly in my car. actually i have no idea about (final drive gearing ratios) ill be glad to know more details so i can decide if ill change it or only i have to fix something on it

 

It's like changing the rear sprocket on a bicycle. The final drive ratio determines the wheel speed relative to the driveshaft. The GS300 has a different final drive ratio than the 400 and 430 because it has less torque. In a GS300, the wheels will spin 3.92 times for every rotation of the driveshaft, in a GS430 (I'm not sure about 400) the ratio is 3.27. If I had to guess, I'd guess that the shop installed a GS300 diff with the higher ratio, which would give you better acceleration but your RPM at a given speed will be higher.

https://www.motorauthority.com/news/...fects-your-car

 

Thank You so much and its really helpful now im totally aware about the issue
thanks again Firelizard cool