Cannot rebore

[JonT]

I asked a garage how much they would charge me for a rebore + new pistons and rings. They said that my RG125 UN Wolf could not be rebored as it has a chrome bore. To do that they would charge me £140 + parts + labour (for either a rechrome or a resleave).

Is it just me or is that absolutely mental? The damn bike only cost me £700 to buy in the first place

[mr jamez]

That is about the right price.

Have a look at https://www.stanstephens.com/nico.htm

They are a respected two stroke tuning company, you can see there how much it is to get the bore replated. I have no idea about the RG125, but for my NSR it was £85 for a new Barrel with piston, and about £130 just to get the old one re-plated. So might be worth seeing what a complete new barrel costs (if you can still buy them).

[Robby]

Ah, this popped up in mechanics this month.

You can rebore a chromed cylinder, but you need to dechrome it first, which I believe is done with chemicals. If you try to rebore without removing the chrome you'll knackered the tool.

[Kickstart]

Hi

"Chromed" bores are not designed to be rebored. The makers would have you throw it away and buy a new one. They cannot be really bored as the whole assembly is not designed with that in mind, and iversize pistons are probably not availabe.

Around £100 is about right for the replate plus the cost of a piston. Try PJ Engineering in Wolverhampton.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing