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mvent
 Post subject: Piston help
PostPosted: Sun Oct 07, 2012 9:10 am 
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Joined: Tue Nov 15, 2011 8:55 pm
Posts: 168
Location: Rhode Island
Hi, need help determining what to do with piston bore dimensions, cyl 1 measured 2.3605,cyl 2 ,2.3607, cyl 3, 2.3605 bore dim are 2.3644. Is a next size bore and piston recommended?
Also looking for quality complete engine gasket/seal kit, any recommendations?
Thanks
Mike

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Jim
 Post subject: Re: Piston help
PostPosted: Sun Oct 07, 2012 9:23 am 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 9843
Location: North Central NC
Check the chart in the resource site where it shows piston and cylinder sizes and service limits, but your 0.004" clearance sounds like they have a long way to go before they need anything. The service limit for the cylinder alone allows for 0.006 wear.

http://www.kawtriple.com/mraxl/motorspec.html

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mvent
 Post subject: Re: Piston help
PostPosted: Sun Oct 07, 2012 10:43 am 
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Joined: Tue Nov 15, 2011 8:55 pm
Posts: 168
Location: Rhode Island
Thanks Jim sounds like good news, will give a copy of spec sheet to machinist, any recommendation on gasket/seal kits for engine rebuild?

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Ja-Moo
 Post subject: Re: Piston help
PostPosted: Sun Oct 07, 2012 10:54 am 
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Location: Rio Rancho, New Mexico
How did you measure the clearance? It's not just clearance, there is also ovaling.

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mvent
 Post subject: Re: Piston help
PostPosted: Sun Oct 07, 2012 11:26 am 
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Joined: Tue Nov 15, 2011 8:55 pm
Posts: 168
Location: Rhode Island
Ja-Moo wrote:
How did you measure the clearance? It's not just clearance, there is also ovaling.

So true, borrowed a gauge and tried to follow procedure in manual, quickly realizing I'm over my head with this and will leave it to a pro.Putting too much coin in this thing for a rookie mistake to cause problems.

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two-stroke-brit
 Post subject: Re: Piston help
PostPosted: Sun Oct 07, 2012 11:56 am 
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Joined: Wed Jun 22, 2011 8:07 pm
Posts: 1759
Location: houston texas
mvent wrote:
Ja-Moo wrote:
How did you measure the clearance? It's not just clearance, there is also ovaling.

So true, borrowed a gauge and tried to follow procedure in manual, quickly realizing I'm over my head with this and will leave it to a pro.Putting too much coin in this thing for a rookie mistake to cause problems.


wise move :thumbup:

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