Will an "A" piston fit a "B" bore?

[Bofs]

I need a new piston for my Imola kit.It`s a B stamped barrel. Will an "A" grade piston be ok?

[RICSPEED]

dont think so

[TS1-200]

If its any help I fitted a C grade piston in my TS1 (B grade barrel) or it might have been the other way round and it was fine, as I couldn`t get the correct grade at the time MB said it would be OK, and it was.

[byron]

I think you can go one grade either side...?
so mix A with a B, or B with a C, but not A and C
but wait for someone to confirm that....

[CPH Lambretta]

Thats what I was told as well

[Bofs]

Cheers folks, there only seems to be "A" grades available at the minute,hence the query.

[eibargum]

Cheers folks, there only seems to be "A" grades available at the minute,hence the query.

Get the verniers out, ive had B,s bigger than C,s, , so you may find a A bigger than a B.

[shocky]

I think you can go one grade either side...?
so mix A with a B, or B with a C, but not A and C
but wait for someone to confirm that....

TINO told me that when he had my muggy replated he said a slight oversize was better it never gave me any problems altho it was standard and not that fast(200)