Whiteline Diff Bushes installation / Thick or thin bushings on top?

[Dmytro]

Hi everyone,

I’ve recently purchased the Whiteline KDT911 diff mount bushing kit for my Nissan 350Z. I’ve been doing some research and noticed a significant contradiction regarding the front ear bushings.

Earlier forum discussions suggested that Whiteline’s old instructions were incorrect—placing the thinner bushings on top supposedly caused clunking noises and premature drivetrain/driveshaft wear due to poor pinion angles. I checked the latest manual on the Whiteline website, and it seems they have corrected this, now stating that the thicker bushings should be installed on top.

However, most recent DIY videos on YouTube and Instagram still show people installing the thinner ones on top.

I want to do this right the first time and avoid any vibrations or damage to my Z. Should I follow the updated Whiteline manual (thick on top) or stick to what most of the community is doing in videos? Also, can anyone confirm if I should completely discard the OEM top metal washers as per the new guidelines?

 

[davey_83]

Thick bush up top ✅

 

 

 

 

[Dmytro]

38 minutes ago, davey_83 said:

Thick bush up top ✅

 

 

 

 

Read your post. Thanks a lot for advise!