Piston & Sleeve ?

[What up Dog]

So I have 2 Brand New Pistons & 1 sleeve they are both Stainless Steel but I don’t know what motor they are for. I’m looking to sell them. But need help if someone can let me know that motor are they for. I think Picco 90? But I’m not sure.

 

[francois peilleron]

it might be the old square cmb 90 or the old rossi 90 circa 1980 1985 what is the diameter of the sleeve,that will help to find out fo what engine they are for

 

[What up Dog]

I will have a caliper today to take measurements. Thanks

 

[MarkDanielsSr]

Steel and a web in the exhaust looks a lot like OS Max, just a guess, not an expert.

 

[NAMBA860]

Looks like VRM .46

 

[What up Dog]

To big for a .46

 

[NAMBA860]

Os .65 then

 

[bermudadude]

only o.s had steel sleeves . (in modern times) plus i seen a few,looks like em
google the bore n stroke n u can see which they r. 65/81/91

 

[What up Dog]

What ever they are for $50.00 for the pair!
plus the ride. Lower 50

 

[Kez]

I do not think OS 46 or 65 VRM use a steel sleeve. Early OS used nickel plated brass sleeve (ABN). The outside of the sleeve was plated unlike a typical ABC sleeve..

I have never seen an aluminum piston running in a steel sleeve unless it is a ringed piston.

 

[francois peilleron]

I am quite sure thy are for the ROSSI 90 in the 1980 1985 year the figures on the caliber 26.96 and 31.96 match the one I have the first model was a ring piston and the sleeve was steel before the brass for the next model