Ya, it's not 660cc I guarantee that. For these to be 660cc it needs a 100mm piston , guess what ? Nobody makes one for the XT/TT's(there is a rare 101mm though). I built one that is 660 , but I bored the cylinder out and installed a Raptor sleeve, but I also had to use a Raptor piston and lower end. It would be the same thing over there only using the XTZ660 sleeve and bored the engine case out 5mm for the bigger sleeve OD but then the wrist pin offset is different so it'll knock, otherwise the bottom end is needed, I doubt anybody else thought to look at that combo. Not to mention TT's don't even have a sleeve to begin with. I say be him 499Eur that he doesn't have 660 cc's But doesn't really matter, if it's an ok runner and has what you need, actual cc's are not important.

I do have a Wiseco 101mm XT piston that is kind of an oddball that'll be going in my new 3TB, but again I'll be boring the cylinder for a Raptor sleeve. It'll be a 672cc .

You see the deal Geoff gets, now you see how we feel over here with the bikes and prices you guys get over in Europe. We can't hardly touch anything for under $1000usd , and often $1500-1800 for something nice, worst is that any ,at any cost, only come along for sale once in a while , maybe 2-3 per year. within a 500 mile radius.



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I think that UK has the most parts and that you can do the best deals/bargains in Europe overall there.
In Sweden the prices are at least the double. We can buy from Ebay UK and still (expensive freight included)
get below our domestic prices. UK scraps on Ebay has raised their prices though so it gotta be a private person selling.
However, a lot of people are jealeous over the prices you have in US for new bikes.

Thanks for the info what it takes to get 660 cc in an engine. Some words I don´t understand yet but I will check them out,
(sleeve and wrist pin). If I had been more educated in engines I could probably guess what they meant, but not yet.

My engine tuning for bikes so far has been about carbs/air/exhaust.

I´ll be keep on hunting for parts/bikes.

I cach a frame from Germany.The code is 2NF(2KF) My question is,the engine code same NF or KF this like model?
Germany document isn"t contain engine number.

Steve

miszterember wrote: Tue Oct 01, 2019 9:20 am My question is,the engine code same NF or KF this like model?

Steve

Hi Steve,
to my knowledge the only different on the 2NF vs 2KF is the restrictet inlet / intake rubbers between the carburator and the cylinderhead, hence the 2NF version is downgraded to about 27 Hp.

Best regards Brage