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Home > Help Needed / General Tech Chat > Timing gear shims

Alex

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690 Posts
Member #: 1851
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Woolavington, Zummerzet

25th Aug, 2011 at 08:19:49pm

Simple question:
When shimming the timing gears to get them in line, are the same shims used on both the crank and the cam ?

I've only ever had to shim the crank before, but the GT engine needs the cam wheel raising a bit and the crank shims seem too big in diameter.

Metric is for people who can't do fractions.

Rod S

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Formally Retired

Rural Suffolk

25th Aug, 2011 at 08:27:29pm

Don't try to shim the cam wheel....

The triangular plate behind it is the axial thrust bearing for the cam so needs to be installed as it is for the cam end float to be right.

Do changes on the crank sprocket only.

Schrödinger's cat - so which one am I ???

Alex

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Woolavington, Zummerzet

25th Aug, 2011 at 08:58:39pm

So if the crank sprocket is too tall with no shims on the crank, how do I raise the cam sprocket to suit ?

Metric is for people who can't do fractions.

Joe C

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Carlos Fandango

Burnham-on-Crouch, Essex

25th Aug, 2011 at 09:05:55pm

maybe add another gasket behind the timing plate.

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



Rod S

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5988 Posts
Member #: 2024
Formally Retired

Rural Suffolk

25th Aug, 2011 at 09:13:26pm




On 25th Aug, 2011 Joe C said:
maybe add another gasket behind the timing plate.


Or use an aftermarket gasket which is crap but a lot thicker...

I had to do this the other way around, ie, add loads of shims because the aftermarket gasket was too thick :)

Schrödinger's cat - so which one am I ???

Alex

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Woolavington, Zummerzet

25th Aug, 2011 at 09:19:02pm

That'll teach me to use a Payen gasket and one of Dave's shiny aluminium front plates... Guess it'll have to come apart again as I'm not daft enought to start filing the back of a Swiftune vernier duplex sprocket.

I blame Dave entirely, and will tell him so next time I see him !

Metric is for people who can't do fractions.

Alex

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Woolavington, Zummerzet

25th Aug, 2011 at 09:25:34pm

It is Dave's fault !!
I've just measured the thickness of the ally plate and it is .025" THINNER than the standard steel one - no wonder it is lighter !!

Metric is for people who can't do fractions.
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