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Home > Help Needed / General Tech Chat > Idler gear shims, what can I do?

MatthewPettitt

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Banbury

11th Sep, 2013 at 09:05:55pm

I have just built up the transfer casing and checked the play in the idler gear.

bits I have used,

A+ gearbox & transfer case
Genuine gasket from minispares
two 0.135" shims
A+ gear.
Torqued up nicely.

And I've got 0.018" bugger.



What to do?

larger shims? 0.139" is the largest I've found

thinner gasket? if so, where from? and will it make up 0.018"?

machine the mating face 0.018"?

buy another one?

I've also noticed, on the transfer case, there is a grove and burr made where the idler shim has run round and eaten the case.

Cheers for any help,


Matt

matty

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Aylesbury

11th Sep, 2013 at 09:30:02pm

If the transfer case has worn, I'd be tempted to try another one.

https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel

www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi

BENROSS

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Resident Cylinder Head Modifier

Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem

11th Sep, 2013 at 11:28:53pm

On 11th Sep, 2013 matty said:
If the transfer case has worn, I'd be tempted to try another one.


as above if not minispares north have various over sizes ask for Richard,
if not have one made ? top limit or an tad more on a Hard performance engine is no worries on top limits above, around 0.005" is acceptable, IMO
gaskets varies in thickness so try a few

hope this helps you Mathew *smiley*

Sprocket

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Preston On The Brook

12th Sep, 2013 at 07:17:36pm

One option open to you is to have the casing flycut but surely there is a problem if you cannot get the idler clearance set with the standard available thicknesses of over size thrust washers?

Edit*

On 11th Sep, 2013 MatthewPettitt said:

I've also noticed, on the transfer case, there is a grove and burr made where the idler shim has run round and eaten the case.



There you go then................. *wink*

Edited by Sprocket on 12th Sep, 2013.

On 26th Oct, 2004 TurboDave16v said:
 Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........

MatthewPettitt

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97 Posts
Member #: 9237
Advanced Member

Banbury

12th Sep, 2013 at 08:46:49pm

Thanks Chaps,

I'll try minispares for some over size ones, else I'll have to dig out the one I got from adcyorka little while ago.

would fly cutting make the nose bearing on the mainshaft a little tight?


matty

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Aylesbury

12th Sep, 2013 at 08:50:55pm

It will be fine with the amount you need to take off.

https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel

www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi

wil_h

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Betwix Harrogate and York

12th Sep, 2013 at 08:52:55pm

Is the idler the right size?

Fastest 998 mini in the world? 13.05 1/4 mile 106mph



On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


Mr Joshua

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Luton Bedfordshire

13th Sep, 2013 at 09:32:05pm

Try different gaskets them shims aren't cheap!

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