YPVS F2 Plastics Wanted

[jonno]

Hi all,

After hankering after another two stroke again, i have just bought a seized 1990 YPVS F2. The engine will obviously be going in for the works & while its a way, i would like to attend to the cosmetics.

Has anyone got any genuine plastics for an F2 in good condition? Colour immaterial.

Ps. Great site.

[vinze187]

i got a good belly thinging , in rossi colours at the mo

[Norbo]

Hi matey glad your joyning the crew . I have losds of the side pannels that are very good but all the full faring pannels have bits missing or damaged . But if you ever need a decal kit i have them all or can do a custon colour in the standard style if you like. Anyhelp you need or advice just put up a post and myself and others will be glad to lend a hand. We are all LC and valve fans on here and we help each other out on here .

[jonno]

Thanks for the welcome Norbo

I will be stripping the bike down this weekend. I am awaiting an RGV front and rear end to commence the frame build, while the engine is receiving the treatment.

I want to get it finished before i go out to Dubai next April.

[Norbo]

You are welcome to start your own thred in the Hybrid section if you like put up pics of your bike and how you are geting on .

[vinze187]

are you upgrading the rear end too mate or just the front?

[jonno]

Vinze,

Im doing the front and rear.

[Norbo]

Cant do half a job can you mate ;D

[vinze187]

good man!! cant wait to get mind finished and on the road exxxxxxxxxxxcitedddddddddd!

[jonno]

Well, I got the engine apart today and found that the engine was not seized due to overheating!

It was locked up due to the RH piston breaking up and all the debris locking up the crank. What a mess! Still the bores dont appear to have suffered from the breakup.

[Norbo]

A bit like old nutters bike. Just needed seals but when it was striped the rods wher shot and the barings then when the crank was split the hardening on the webs had broken up and he needed new webs as well. Bloody hell it never ended one thing after another but its all new now.

Youd be as well geting new rings while its apart and striping the crank to be on the safe side.

[jonno]

Cheers Norbo,

I am indeed planning a full rebuild.

I noticed the pistons are stamped 225. How many rebores left?

The liners look thin to me. Whats your view Norbo?

[Norbo]

Do you meen 2.25

If so thats huge 2.00 is as big as may pistons go 2.25 is well over sizeed. .25 is nothing at all have a look again your in trouble if its 2.25 the pistens tend to catch the valves at 2.00

[jonno]

Well i miked the pistons this evening and they measure 66.18mm!! 2.25mm oversize!!

They appear to be Yamaha pistons as they have 31K stamped on the inside.

Im on the hunt for some replacement barrels now.

[Norbo]

They all have 31K on the inside. I may have some barrels but you will need to have them bored or at lest get pistons for them depends how good you want them . I can get the pistons and have them bored befor i post if you want . You can have the barrels for £50 plus P&P

[jonno]

That seems reasonable Norbo.

Let me think about it for a couple of days.

Is there any difference between 31K & 1AU barrels?

By the way, the mincer on ebay pulled out of the deal on the RGV that i won. Tosspot!