piston help!!

[707trx250r]

I just took off my cylinder head. I can't figure out what piston is in it. I believe it is a wiseco.

The top says either in 0.75 or in .075 any help is much apperciated.

[250R Baja Rider]

It's kind of hard to tell what piston it is without looking at it.

The .75 means it is .75 over stock or (P3).

[707trx250r]

I pulled it out and it is a prox from a 88 cr 250r. But I have a 87 trx. I thought you needed a spacer plate.

What would be the next size wiseco piston?

[250R Baja Rider]

I believe the 88 CR piston is the same geometry as the 86 TRX.

But when you open up the engine check the rod you have.
You may have a short rod. Even if your engine is an 87, someone may have used an 86 rod instead and that's why you don't have the spacer.