Julian's YPVS money pit

[Le_Fromage_Grande]

My mate has a holding tool, so that's £25 saved, I never had one 30 years ago, I just used to put the bike in gear and stamp on the back brake.

I could probably change a crank in 3 hours of it weren't for nearly 40 years of crud and previous owners abuse. I used to be able to replace the rings in about an hour on a YPVS, an LC was about 45 minutes, they're a lot less fiddly to work on.

Though if the crank has to come out it's getting a 421 cc stroker crank and big bore

[demographic]

Barrels off today, the left hand cylinder has been seized at some point, there's a couple of big marks on the piston, a previous owner has put new rings on it and slung it back together because the rings are unmarked, I can't see any damage to the barrel but I'm going to get it rebored as it's only an extra £80.

A Sealey lock on combination spanner dealt with the rounded nut no problem.

Next the clutch, there's been a right butcher at work in here, the clutch centre nut been abused with a hammer and chisel, the damage is so bad I can't get a socket on the nut, I'm going to have to remove the damage with a file. I also need to buy a clutch holding tool.

Where on the piston are the marks? Fire a pic up.

[Druid]

Clutch holding tool = bit of bar welded to an old steel clutch plate.

We used to feed a cloth in between the clutch and crank cogs!

Me too. The biggest advantage of this method was that you could use the same bit of cloth for any bike

[Nordboy]

Looks like it's getting reframed with a C reg F1 frame, as I just won one on eBay, comes with a set of LC2 clocks and the fairing mounting, I'll sell my Q reg frame, someone is asking £400 for a Q reg frame on eBay, but I think £200 is more realistic.

My new frame is in Swansea, which is a bit of a pain, as it's a 4 hour drive each way.

If you need someone to pick the frame up and store it for you, until it's convenient to collect, let me know. I'm not far from Swansea.

[Le_Fromage_Grande]

Looks like it's getting reframed with a C reg F1 frame, as I just won one on eBay, comes with a set of LC2 clocks and the fairing mounting, I'll sell my Q reg frame, someone is asking £400 for a Q reg frame on eBay, but I think £200 is more realistic.

My new frame is in Swansea, which is a bit of a pain, as it's a 4 hour drive each way.

If you need someone to pick the frame up and store it for you, until it's convenient to collect, let me know. I'm not far from Swansea.

That's very kind of you, picking it up next Sunday.

[Le_Fromage_Grande]

Barrels off today, the left hand cylinder has been seized at some point, there's a couple of big marks on the piston, a previous owner has put new rings on it and slung it back together because the rings are unmarked, I can't see any damage to the barrel but I'm going to get it rebored as it's only an extra £80.

A Sealey lock on combination spanner dealt with the rounded nut no problem.

Next the clutch, there's been a right butcher at work in here, the clutch centre nut been abused with a hammer and chisel, the damage is so bad I can't get a socket on the nut, I'm going to have to remove the damage with a file. I also need to buy a clutch holding tool.

Where on the piston are the marks? Fire a pic up.

On the exhaust port side, it doesn't look like a heat smear, more like something has damaged the piston, I'm more used to big holes in the top of pistons and the ring lands smeared all over the barrel. I think it's been caused by poor lubrication rather than weak mixture, photo tomorrow if I get time.

[Nidge]

Clutch holding tool = bit of bar welded to an old steel clutch plate.

We used to feed a cloth in between the clutch and crank cogs!

Me too. The biggest advantage of this method was that you could use the same bit of cloth for any bike

As long as they were all metric.... Brit stuff uses imperial tweed

[Nidge]

By the way @Le_Fromage_Grande there an RZ250 for sale on the UK Motorbike Bargains page. It’s only £3200 and in Wales... you could make the round trip a bit more worthwhile (it’s cheap because it’s on a Q plate though...)

Also @KungFooBob the there’s a GSXR1100WP for a couple of grand...

[Druid]

We used to feed a cloth in between the clutch and crank cogs!

Me too. The biggest advantage of this method was that you could use the same bit of cloth for any bike

As long as they were all metric.... Brit stuff uses imperial tweed

The Hinckley Triumphs are metric, and I believe Harleys need denim.

[Le_Fromage_Grande]

By the way @Le_Fromage_Grande there an RZ250 for sale on the UK Motorbike Bargains page. It’s only £3200 and in Wales... you could make the round trip a bit more worthwhile (it’s cheap because it’s on a Q plate though...)

Also @KungFooBob the there’s a GSXR1100WP for a couple of grand...

Seen it, it's best avoided, plus I really need to get this one finished

[Le_Fromage_Grande]

Picked up the frame, clocks and brackets from Swansea today, really happy with what I've bought, I even enjoyed the 10 hours of driving.

[Le_Fromage_Grande]

Oh well, one step forwards, another step back, the frame has some damage where the lower steering bearing sits in the frame, it's repairable, I think someone must have been very heavy handed getting an old bearing race out.

[Le_Fromage_Grande]

Haven't updated this thread for nearly 6 months so here goes

Engine has been rebuilt and is waiting to go in a frame.
I've decided to build it up in the Q reg 1983 frame initially so that I'm can sort stuff out before moving it all to the C reg frame which will be the pretty frame.

I treated the Q reg frame to a coat of silver smoothrite so that it no longer looked like a rusty collection of tubes and poorly welded brackets, it's silver because that's what I found in the shed, swing arm got wire brushed and smoothrited.

Rebuilt a pair of F2 forks with new stanchions, bushes seals and springs, in doing this I found out what fork shuttles are and how to remove them from old stanchions and put them into new stanchions.

The Q reg frame is now a rolling chassis and pretty much ready for the engine.

Fitted the headlight / fairing bracket this afternoon, then spent two hours bending it so the fairing mounts and headlight mounts are were their supposed to be - but what do you expect from a 38 year old part that hasn't been stored very well and may have been in a crash.

Loads of jobs to do on it, but I'm really enjoying working on it, I'd forgotten what a pleasure they are to work on, nothing's fiddly or awkward, and nothing is very high tech or precision, it's all hammer and spanner work.

[Skub]

Thread needs pics.

[Supermofo]

Fair play, but it seems like you're making more work for yourself than you need to, why not just get the C-reg frame done nice then build it up in that.
Swapping frames means essentially doing it all over again and I don't think I'd ever get around to it.

Yeah that, sounds like doing it twice

[cheb]

But he can be getting the engine and running gear sorted whilst the other frame has it cosmetics done.

[Le_Fromage_Grande]

Fair play, but it seems like you're making more work for yourself than you need to, why not just get the C-reg frame done nice then build it up in that.
Swapping frames means essentially doing it all over again and I don't think I'd ever get around to it.

Because it's what I want to do, not sure why

[weeksy]

Fair play, but it seems like you're making more work for yourself than you need to, why not just get the C-reg frame done nice then build it up in that.
Swapping frames means essentially doing it all over again and I don't think I'd ever get around to it.

Because it's what I want to do, not sure why

That's all the reasons you need

[Le_Fromage_Grande]

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Here's a photo of the rolling chassis, just after this I changed all the disc bolts to proper disc bolts, I think the mild steel ones that were in there might be a bit dangerous.

I'm also going to change the screws holding the screen to the fairing, I also need to raise the headlight by about 3mm so it sits central in the hole, I can't lower the fairing without lots of work because the clocks fit snug inside.

More Cheesy weirdness, I'm not bothered by the paintwork, but I am bothered by the headlight not being central and the wrong screen bolts.

I truly am a bit mental

[Le_Fromage_Grande]

Some old pics of it

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