Tom i am registering a couple of CR250's at the moment so am quite versed with this 1 - Get a NOVA number, you need to register in the HMRC website, enter the bikes details and if there is any duty owing, pay it then the chassis is registered with a NOVA number - needed before step 5 2 - Get an MOT ...

welcome fella.
another from northwales and just moved back here too from Cheshire
Now living in Mold

fantastic work here (bit late to the party i know)

I think you should start making a few kits up and sell them as kits so us on this side of the pond can source our own wheels.
really impressive work

lol brilliant
so you reckon the plating was worn a bit too much or the piston just isnt as snug a fit as the OE one was ?

how is she running pal ? all ok i hope

That was cold Jim - you bringing it this weekend ?

I bought the same compression tester and tested mine last night.
a few kicks i saw a constant 150 which while higher that yours - is still a bit low.
rebuild time

what's the difference in weight between the 2 items ?

epic post in true PB style. nice one fella. watching with interest

Good to know thanks pal
i look forward to tearing it down in a couple of weeks and investigating.
now if i could just find another 5bhp from it

also it came from nothing to whiring within 1 session of hard use - i do seem to recall it got fired down the gears a bit hard to may have over revved - oops anyway its only got to do cadwell this coming weekend for 2 days on track and then it can be retired / rebuilt i had a go on a KTM660 - wow wh...

yep it is a whiring sound you are correct, it does sound like a worn bearing noise that increases with revs
i would have said piston slap - but without the slap lol

I noticed after the oil change and 2 sessions in to the track day that there was a distinct roughness coming from the lower part of the engine. it starts, goes and runs just as well as it always has - but sounds a bit - well rumbly to be honest i dont think it's mains as the flywheel has zero play o...

I havn't no, not got a tester myself. it just sounds "a little looser" than it used too 3 years ago prior to 1500 miles flat out on track lol. If anything like my NSR it will all be within tolerance and a freshen would make a big difference. I also noticed my fingers were starting to tingle more the...

watching this - mines also on 11k and the last 3 yars have been flat out on track.
i planned on a rebuild at the end of this year to freshen it up