Author Topic: Piston breaking (Read 498 times)

Gage garman · « **on:** February 24, 2015, 04:54:54 pm »

What are the chances of my piston breaking when the top end blows up. It has the stock piston in it

MotorGeek - Jerry Hall · « **Reply #1 on:** February 24, 2015, 06:49:26 pm »

Pistons break when the clearance is excessive or something else in the engine tries to occupy the same space as the piston at the same time.

Kreidy818 · « **Reply #2 on:** February 25, 2015, 07:24:40 am »

I think you are becoming paranoid about a massive top end failure happening to your bike. Buy a compression tester. regularly do compression test. when you notice a sizable loss in compression (I think its 15%) time for a topend rebuild. Preventitive maintenance is the key!

Zemmy1985 · « **Reply #3 on:** March 09, 2015, 12:53:52 am »

Out of curiosity, what is the ideal compression for a healthy motor?

Iceracer · « **Reply #4 on:** March 09, 2015, 03:58:37 am »

A oem stock 250 should be @ 145-155 with a good ring seal. If cyl and head have been worked this will be higher or possibly lower. All compression test does is check ring seal.

Zemmy1985 · « **Reply #5 on:** March 09, 2015, 04:39:48 pm »

Cool, thanks for the info

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Author Topic: Piston breaking (Read 498 times)

Gage garman

Piston breaking

MotorGeek - Jerry Hall

Re: Piston breaking

Kreidy818

Re: Piston breaking

Zemmy1985

Re: Piston breaking

Iceracer

Re: Piston breaking

Zemmy1985

Re: Piston breaking

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