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Hi guys. I've heard to replace the stock 220 piston because
They tend to crack. I picked up a nearly new
220 a few months ago. I have pulled the piston too see.
What is a good way to identify the stock piston seeing
This one is carboned up? Thanks

Why only stock piston?
I used several wiseco piston, and they wery good
http://wiseco.com/ProductSearch.aspx

Cylinders: 1 Displacement: 216cc Stroke: 58.00mm Notes: Pro-Lite, Electrofusion Bore

750M07000 $152.0070.00mm 1.00

Cylinders: 1 Displacement: 223cc Stroke: 58.00mm Notes: Pro-Lite, Cylinder sleeving required, Cylinder replating required, Electrofusion Bore

There should be some identifying marks on top of the piston crown if it's aftermarket. You may have to clean the carbon off to see them. If it's a Wiseco, it should also have a W on the underside of the piston where the wrist pin boss is.

It wiseco piston

galactika wrote:Why only stock piston?
I used several wiseco piston, and they wery good

you are right, they are very good
in fact, they are so good that if he finds out there is a wiseco in there he wont need to replace it

but the stock unit in the 220 is poor and prone to failure
that is why the original poster is asking how to identify what piston is in there

Exactly. I'm trying to find out if the piston is
The stock one by identifying marks .. If so, ill replace it. If not stock, it's
Still in good shape so ill keep using it. All I'm trying to do is
Make sure it's not stock. Thanks

Its stock when it has cracks like this.



In its defense, the engine took in a lot of sand, and the bore is absolutely walloped out.

Sorry, no good identifying pics, and I am a few hundred miles from home. If need be I can get some next Tuesday. Hope someone has helped you feel comfortable with your piston id by then.


Question - you are lookin at an old, carboned up piston with unknown hours, but only will replace it if it's stock? I votw for peace of mind of a fresh piston and an hour meter while you are in there, then you'll always know.

Sent via morse code

I agree. You are in there might as well change it out. The hour meter after a rebuild is a good idea. I like that Thanks Adam728.