Outer Limits 4x4 Board

Hey Guys,

I am going to install some 2nd hand diff ratio ring and pinion gears into my TJ's diffs very soon. The gearset i have have travelled 15000km's in another jeep so have probably worn slightly already. I have been told by one shop that i should get them 'lapped' to even the wear pattern so it wont stuff the ratios in my diffs.

Anyone comment on this and where good places might be to get it done???

sir_camel wrote:Hey Guys,

I am going to install some 2nd hand diff ratio ring and pinion gears into my TJ's diffs very soon. The gearset i have have travelled 15000km's in another jeep so have probably worn slightly already. I have been told by one shop that i should get them 'lapped' to even the wear pattern so it wont stuff the ratios in my diffs.

Anyone comment on this and where good places might be to get it done???

Yup get em lapped.... Im in gold coast.. so dont know where one who can help u in syd would be.

Cheers
TOM

going the dual lockers SC?

mines in the shop at the moment - could only afford rear locker tho


errrm, sorry m8 cant help with your question

sir_camel wrote:Hey Guys,

I am going to install some 2nd hand diff ratio ring and pinion gears into my TJ's diffs very soon. The gearset i have have travelled 15000km's in another jeep so have probably worn slightly already. I have been told by one shop that i should get them 'lapped' to even the wear pattern so it wont stuff the ratios in my diffs.

Anyone comment on this and where good places might be to get it done???

at only 15,000km diff gears should be barely run in. there should be no need to have them lapped, just set them up correctly and they should be good for years (or until you break them on the track!)

You dont need to lap them in just check contact on crown wheel.