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O.S 15 FP Piston / sleeve - 7/25/2010 8:04 AM   
tru168


 

Posts: 33
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Last Login: 1/6/2013
From: , MALAYSIA
Status: offline 		Hi guys,

My O.S. MAX 15 FP ( not remote needle version) had been kept for more than 10 years , I seldom use it. Recently I oil it and wish to mount it in my Sig Wonder, but found that inner coating of the sleeve already peeled and lost compression. I can't flip start it, only can start with electric starter, and will not idle. needless to say, the top RPM isn't there at all.

I wish to rebuild it, but can't find any piston / sleeve set on market. can I use others piston / sleeve set in this engine? (maybe LA series?) anyone have experience with this issue?

-tru168-

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RE: O.S 15 FP Piston / sleeve - 7/25/2010 8:29 AM   
rambler53


 

Posts: 1437
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Joined: 5/5/2004
Last Login: 5/23/2011
From: Palm Bay, FL, USA
Status: offline 		It's obsolete, no parts, rare to find, even the LA is $27. Best bet is to buy another healthy one.

< Message edited by rambler53 -- 7/25/2010 10:44 AM >

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RE: O.S 15 FP Piston / sleeve - 7/25/2010 10:41 AM   
jeffie8696



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From: Muscatine, IA, USA
Status: online 		One from an LA might fit. I used an LA 25 P&L in my 25FP. I see they are in stock at Tower. You will lose one intake port but it will run OK.


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RE: O.S 15 FP Piston / sleeve - 7/26/2010 10:29 PM   
airraptor


 

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From: fairfield, CA, USA
Status: online 		I also think the LA one will fit.

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RE: O.S 15 FP Piston / sleeve - 7/27/2010 4:07 AM   
controlliner



Posts: 1038
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Last Login: 6/19/2013
From: Kingston, NS, CANADA
Status: offline 		Get a Thunder Tiger piston and sleeve from a GP .15. I have done it and it works. The TT Sleeve has a nickle plating twice as thick as the industry standard. You will see an improvement in longevity. Mine has already lasted longer than the original OS set.


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