greggo wrote:I'm curious on this myself, the rings he had were Yamaha rings (although I've seen intercahngeability on rings between manufacturers on other bikes). Those pistons looked to have much shorter skirts than anything I have seen out of anything from the 90's.

The ring from Yamaha, but pistons looks like from another supplier... but which one - "than't is the question"....

In case I will fit bigger pistons I also need different rods. Correct ?

Ah well the problem with going to 1mm o/s on the Honda is that as you state Honda dont make o/s pistons for it so if you did go 1mm over on any honda useing non gen pistons & the FZR400 ring sets that goes on them you would in fact be cheating.. That is if you wanted to race in Formula 400 in the uk ...........

It's a bit frustrating when people go 1mm over... things like this never get checked at Club level.

vr46 wrote:It's a bit frustrating when people go 1mm over... things like this never get checked at Club level.

A bit

Just wondering - what is adequate price for such engine ?

abrmoto wrote:

vr46 wrote:It's a bit frustrating when people go 1mm over... things like this never get checked at Club level.

A bit

pissed me off for years!

I bought it because its allowed in the Manx now.

CMSMJ1 wrote:Bonus..so what make are those pistons?

I have spoken with seller. The engine done by RLR motors http://www.rlrmotorsports.com/ But keep silence about pistons...

I am waiting for the weather to get better,then I will get it in the workshop and have a look inside.Its got special cams as well.The pistons were made in America,check you tube Thundersports gb rockingham junior powerbikes.