TZR250 Fix Up (AKA Proud Owner of...) 2015 Thread Revival!

[ms51ves3]

Finished rebuilding the rear brake caliper today and also bent the headlight cradle to the right a bit with some scaffold tube so it's straight again.

I have 2 things left to do for the M.O.T. Bleed the brakes and rebuild the forks.

I was going to get the bike up on top of a tool box today so I could remove the forks, but I need to re-arrange the garage first and my dad wouldn't move his RD250 outside when it was raining.

[ms51ves3]

My first sheared bolt

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00869.jpg

[ms51ves3]

A repaired a couple of little cracks on the V piece fairing with some Araldite.

Before:

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00877.jpg

After:

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00879.jpg

[ms51ves3]

Gazdaman, eat your heart out.

Before:

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00880.jpg

After:

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00881.jpg

The forks:

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00882.jpg

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00883.jpg

Caps removed and oil drained:

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00884.jpg

What to do with the old fork oil




Burn it

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00885.jpg

I'll need to wait until Monday now until I can get my forks to the garage and fit the new seals.

[Kickstart]

Hi

Just dragged my TZR250 out to do some fiddling with. Should have it running shortly. Need to connect up the power valve cables and put the exhausts on. Probably swap the forks for my rebuilt ones as well.

All the best

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

[ms51ves3]

[Kickstart]

Hi

Better success than me.

I got the power valves connected up, but not certain they are connected correctly. Looks like the power valves resting position is meant to be open, and then close when idling.

Swapped on the decent set of forks (rechromed and rebuilt a while back).

Anyway got it running. The exhausts were blowing around the manifold though but new Yamaha exhaust gaskets seem to have fixed that (rather than the ones with the pattern full gasket set). One set of pipes have a hole and a crack on the l/h pipe near the front. The other set have been repaired in that area, but there is also a small blow there. And found that I don't have the manifolds for the spare race pipes I have. So 3 sets of pipes and none currently useable! Trying to decide what to do exhaust wise. Stock exhausts seem pretty rare 2nd hand, and are hideously expensive new. Nikkon pipes are fairly cheap but not sure how good they are and I would prefer a stock system. Jolly Moto pipes are hideously expensive. JL exhausts are not cheap but at least are stainless.

All the best

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

[Gazdaman]

I found some brand new main jets and pilot jets for a TZR250 whilst at home this weekend if anyone needs some.

Gaz

[Kickstart]

Hi

Yes please. Put new needles in the carbs already.

All the best

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

[Gazdaman]

Pm your address keith, I'll chuck em in the post when I next go to my garage. Got a Bandit clutch cover gasket too if you want it. Since I don't have a bandit any more, and you should have 2 bikes with engines that it fits.

Gaz

[ms51ves3]

[Kickstart]

Hi

Think the spares I have are Nikkon ones. The JL ones in stainless would suit me and are about the same price (bit cheaper) as the Jolly Moto ones. Although I would far prefer standard ones.

A pair of new exhausts from CMSNL would be about 800 euro, which is probably more than the bike is worth. However they do list the gasket that goes around the baffle at the end which has gone on one pipe and that is only 6 euro.

Need to sort out the power valves today and rebuild the rear brake master cylinder.

All the best

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

[ms51ves3]

Finished off the camera mount today with some more shoddy welding so now it is held on by 3 bolts.

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00895.jpg

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00896.jpg

Then I painted it white with a tin of anti rust primer I found in the garage.

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00899.jpg

The spacer that goes in between the clip-on and the top yoke has a little pin through it, but the one on the right didn't so when fitted it spun round.

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00900.jpg

I found a little piece of threaded bar (if you can call it a bar) that was pretty much the perfect size. Another job striked off the list.

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00901.jpg

[Kickstart]

Hi

Hope you don't need to fill up with petrol in a hurry .

Those pins on mine appear too short. They barely locate the bars.

I got the exhausts on and the stuck baffle out, and put in a pair of half decent baffles. Just need to get some of the gaskets for around the back of the baffles. Bike starts and runs OK now (loads of smoke, probably me being too generous with the 2 squeak oil when reassembling it).

Rebuilt the rear brake master cylinder and still couldn't bleed the brakes through. So took the caliper to pieces and found a lump of seal missing. Went to put them together with the new seals I had only to find those seals are wrong (maybe the caliper has been swapped at some point).

All the best

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

[ms51ves3]

[Welshd1k]

bit late but wobbly exhaust is same as the rd350's

put a thin strip od copper wire BEHIND the actual collar lip where the loose bit come down to touch . there shoudl be a metal circlippy thign there
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Current >Cb600fx hornet, ns125rk90 21.7bhp@wheel<
Sold >,zxr400 h2 (33bhp kit) rd350 n1 rd350 lc2<

[ms51ves3]

I just found a tin of taps hoping that I could use one after drilling most of the sheared bolt out, but they're all imperial

[Kickstart]

Hi

The baffles are standard. One was slightly mishapen and a git to get out. If you take them out they are a blocked tube with a couple of scoops for the gas to leave the tube, and then a couple more scoops for the gas to enter the tube. If you wanted to you could probably easily make up a replacement noisier baffle.

Suspect with the sheared off bolt it would be easiest to take the hanger off and stick it in a piller drill carefully lined up and drill the old bolt out with progressively larger drills. Suspect there is a good chance you could get it out without damaging the hanger.

All the best

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

[ms51ves3]

[ms51ves3]

My torque wrench has arrived
Credit to Amazon. Dispatched yesterday, arrived today via RM as well.

https://i15.photobucket.com/albums/a376/ms51ves3/DSC00904.jpg

[twotakt]

[Kickstart]

Hi

I would prefer standard exhausts to be honest. I have 2 sets but neither are great.

All the best

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

[ms51ves3]

[Kickstart]

[ms51ves3]