Does the 86 use the same piston as 88?

[two85atc250r's]

I am needing a piston for my 86, will it take a wiseco from an 88 model? It is a different part number by one digit but the pin and everything is the same size. What is the difference between the two?

no one has a longer crank shaft

[two85atc250r's]

So does that mean one piston is shorter than the other?

[honda380]

the pin location on the 86 is about 5mm lower than the pin location on the 88. if you have an 87-89 and run an 86 piston, you need the spacer plate to compensate.

[two85atc250r's]

Thanks, I was thinking of using an 88 piston on an 86 but it sounds like it would not work. So much for the good deal I found on the 88 piston.

[honda380]

i have the same problem! i can find great deals on 88 pistons, but nothing on the 86 that i need. i run the spacer plate so i can run the 88 piston if i want, but i will have about a half inch of extra base stud to fill.