shimmed diffs ?

[nikki]

ok first off excuse me lack of knowledge here.

i have a standered diff in my 14a and im happy with it for every day usage. it locks up to the right fine but requires some clutch banging to the left.

iv had enough of welded diffs and dont wanna go down that route and a 2 way isnt really in my price range.

Will a shimmed diff make much of a differenece??? who does it and what money would it cost ..... i dont really know anything about them but i keep hearinf "get your diff shimmed nikki "



any help is apprecaited .... sarcastic heros are not wanted :p

[20vees]

i know you dont want to but if your life is about sliding and not about lifestyling ....weld it..a shimmed diff isnt really better than a normal viscous, a 2way or weld it

[nikki]

im sick of welded diffs . looks like i shall start saving for a 2 way then .


seen as info is so hard to find on these mythical shimmed diffs ....

[20vees]

im sick of welded diffs . looks like i shall start saving for a 2 way then .


seen as info is so hard to find on these mythical shimmed diffs ....

nothing mythical just a waste of time... all it is is a extra shim put in the viscous diff to tighten up the diff

[nikki]

well as i said id no idea what it was or what it done .... so thank you for the info . prob not even worth getting done if it just tightens the diff

[B.Egan]

Wouldn't be an expert on it, but Will_C shimmed the diff in my mx5 drift car, and it worked perfectly. Basically my understanding is that you make the shims up to whatever widths you want/decide. And the wider, the more it will tighten it up. We put a lot so worked the exact same as a welded diff. Reason we didn't weld it, was that the 1.6 mx5 diffs are shockingly tiny, and with 235bhp shouldn't really hold up. By shimming it it was more likely to wear out, rather than breaking with a big bang like a welded we thought.

[pinny]

Shim it up ! Great job ! I shimmed 2 or 3 diffs for lads. One was in an r33 after a cusco exploded , he said it was as good as the 2 way

[Flyinfester]

I shimmed my diff in feb and have been givin it alot off shit since and never missed a beat, i bought 4 different widths off shim from nissan and ended goin .46mm thicker than the one in it, whole thing took an hour and 45 mins from start to finish and was the first time i've had a diff apart

[Sir Diffsalot]

I shimmed my diff in feb and have been givin it alot off shit since and never missed a beat, i bought 4 different widths off shim from nissan and ended goin .46mm thicker than the one in it, whole thing took an hour and 45 mins from start to finish and was the first time i've had a diff apart

What part numbers did ya use or how did ya know what to order? And were they expensive?

[Flyinfester]

I got them threw a mate that works in nissan gave 36 quid for the 4
Part numbers and the widths i'll try find the the whole list here shortly but these are the ones i ordered
38424-40F60 =0.80mm
38424-40F67 =1.01mm
38424-40F75 =1.25mm
38424-40F83 =1.49mm

[Flyinfester]

All the part numbers here


Thickness mm (in) Part number
0.80 (0.0315) 38424 40F60
0.83 (0.0327) 38424 40F61
0.86 (0.0339) 38424 40F62
0.89 (0.0350) 38424 40F63
0.92 (0.0362) 38424 40F64
0.95 (0.0374) 38424 40F65
0.98 (0.0386) 38424 40F66
1.01 (0.0398) 38424 40F67
1.04 (0.0409) 38424 40F68
1.07 (0.0421) 38424 40F69
1.10 (0.0433) 38424 40F70
1.13 (0.0445) 38424 40F71
1.16 (0.0457) 38424 40F72
1.19 (0.0469) 38424 40F73
1.22 (0.0480) 38424 40F74
1.25 (0.0492) 38424 40F75
1.28 (0.0504) 38424 40F76
1.31 (0.0516) 38424 40F77
1.34 (0.0528) 38424 40F78
1.37 (0.0539) 38424 40F79
1.40 (0.0551) 38424 40F80
1.43 (0.0563) 38424 40F81
1.46 (0.0575) 38424 40F82
1.49 (0.0587) 38424 40F83

[nikki]

I got them threw a mate that works in nissan gave 36 quid for the 4
Part numbers and the widths i'll try find the the whole list here shortly but these are the ones i ordered
38424-40F60 =0.80mm
38424-40F67 =1.01mm
38424-40F75 =1.25mm
38424-40F83 =1.49mm

so these are the 4 id need to order from nissan for a s14 diff ? mines non turbo would that make any difference at all ?


pinny - do they lock up like a welded or 2 way yeh ??? no more one wheeling :D

[Flyinfester]

Well thats the ones i got so when the diff was out i could make somethin work,have read about ppl just stickin a .8 in but i didnt want it as tight as practically welding so only went slightly thicker only time it can let ya down is 2 different makes off tyre either side as in one way griper than the other on a bone dry day but one bang off the clutch and its grand. Generally with 2 same tyres i've had no problems

[nikki]

i dont mind it being very tight , iv just had so many welded diffs im sick of them haha.

ok so i could just order the 0.8 shim and get that put in yeh ?

[Flyinfester]

Yea shouldnt be a problem id imagine

[japstuff 2]

to do it right what shim thickness you put in on the inside u need to take of on your outside bearings or the diff wont fit in the casing also remember when u pull the diff out of the casing and remove the crownwheel to re fit the ps imput shaft (the long 1) and keep it fitted till u have fitted the shim and are ready to fit the crownwheel again when u do it youll see what i mean

[nikki]

i wont be doing it il leave it upto my mechanic hes really good at anything like this but didnt want to go get it done completely clueless to what i was asking . now i have some idea and i know it will work il get on the case ;)