Exhaust cam change

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ebenviljoen
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Joined: Wed Nov 21, 2012 11:35 am
Location: Kettering, Northamptonshire

Exhaust cam change

Post by ebenviljoen »

So I got a cheap set of exahust cams to replace my inlet cams. When I do them I will do my valve clearances too. My question now is, when replacing the inlet cams for exhaust cams, which clearance settings do I use? Still between 0.13mm & 0.19mm, well aiming for 0.16mm or do I use the settings same as the exhaust? Logically I would say use normal inlet valve clearance of 0.16mm, but I am double checking :thumbup:
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VTRDark
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Re: Exhaust cam change

Post by VTRDark »

Use normal inlet clearances. :thumbup:

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ebenviljoen
Posts: 187
Joined: Wed Nov 21, 2012 11:35 am
Location: Kettering, Northamptonshire

Re: Exhaust cam change

Post by ebenviljoen »

cybercarl wrote:Use normal inlet clearances. :thumbup:

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Thanks Carl :thumbup:
tony.mon
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Re: Exhaust cam change

Post by tony.mon »

Agreed, inlets are inlets.
The smaller gap is because the valve is cooled by the incoming charge, so less expansion to deal with.

Sixteen is the midrange, but if you're using a Hotcams set, which only come at .05 increments, aim for the larger end of the range.

Gaps always close up with normal wear, so a newly set gap of 16 to 19 is good.
It's not falling off, it's an upgrade opportunity.
ebenviljoen
Posts: 187
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Location: Kettering, Northamptonshire

Re: Exhaust cam change

Post by ebenviljoen »

tony.mon wrote:Agreed, inlets are inlets.
The smaller gap is because the valve is cooled by the incoming charge, so less expansion to deal with.

Sixteen is the midrange, but if you're using a Hotcams set, which only come at .05 increments, aim for the larger end of the range.

Gaps always close up with normal wear, so a newly set gap of 16 to 19 is good.
thanks mate :thumbup: i did think that because it is still your inlet you keep inlet gap specs, but now I understand why. lol

now I need to buy some shims. Which kits fit these bikes? I don't really fancy taking it apart, measuring the gaps, then the shims and then have it standing in bits for a week waiting for the shims to be deliverred, because I know my dealer won't have the sizes I want. well at least one because that is always my luck! lol :confused
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lloydie
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Re: Exhaust cam change

Post by lloydie »

Hot cam shim kit
http://bit.ly/16FV5cW
ebenviljoen
Posts: 187
Joined: Wed Nov 21, 2012 11:35 am
Location: Kettering, Northamptonshire

Re: Exhaust cam change

Post by ebenviljoen »

lloydie wrote:Hot cam shim kit
http://bit.ly/16FV5cW
:thumbup: cheers fella
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VTRDark
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Re: Exhaust cam change

Post by VTRDark »

Yeh you will have difficulty finding them in the UK. The other brand out there as an option is Pro X http://www.24mx.co.uk/motocross/p/prox- ... ent/17617/
Whatever kit you go for you need to make sure they are 9.48mm diameter shims.

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