jyeung528

Hey OP,

I have this same issue as well, I also have my own thread on it describing it in more detail. https://www.s2ki.com/s2000/topic/109...#entry23304458

I've suspected that it may be switching to Amsoil 75w110 having caused some sort of differential damage. I'm going to try switching back to LE-1605 to see if that alleviates the issue, but the damage may be done.

May I ask you some questions, what diff oil are you using, and how many miles do you have on your car?

jyeung528

my vibration has gotten worse, and because of that...it has become more apparent that this is the CV joint pitting/wear.

I'm going to use the spacers and see if that fixes it. (already swapped left to right 100K miles ago, so i'm going to swap back and use spacers).

stoiic

Im pretty sure the wheels are completely round, and i know its difficult to cover all potential circumstances :/

I did swap the cups from side to side, not the entire axle just the cups. and it was high temperature/pressure grease from redline.

I checked the cv joints when i took apart the axels the seemed in good shape.

I read your thread it appears we have the same problem. My car has just under 90k miles, and the cv joints have zero pitting. Also i have spacers already.
I havent had time to check the drive shaft but i have a feeling that could be the problem. Fingers crossed. let me know if you resolve the problem

jyeung528

let me know what you find out with the driveshaft, my driveshaft seems okay, i am using driveshaftshop steel driveshaft.

if you read from my other thread, i am suspecting it is damage or excessive wear in the diff.

i just ordered amsoil severe gear 190w gear oil and their slip lock additive.

will update when i do that fluid change on any results i find.

jyeung528

everything i've read regarding vibration with light throttle at a specific highway speed points to the inner cv joints.

i'm going to bite the bullet and get new ones.

jyeung528

stoiic, are you using the oem propeller driveshaft? what differential oil are you/have you been using?

jyeung528

update: not the wheel bearings, diagnostics to be continued.

jyeung528

this is solved, for me, not the OP.

the nut in the middle of the differential flange was loose. tightened it, now it's smooth as butter.

stoiic

Hey guys, its finally fixed no vibration.

In my case it was the driveshaft/ propeller shaft. I noticed it had some play and like a rattle so i took it to andres at kab customs and he switched out the drive shaft.

The shaft was out of balanced and caused it to spin wrong, but now its fixed and i couldnt be happier

Thanks for all the input, glad to have it fixed.

Slowcrash_101

for Andres, he's a cool guy.