Please could you help me out been stripping a project bike and the exhaust isn't standard after some identification from the experts. Probably standard front headers but some of the spring holders have come off hence the clamps.

Time for another rare one, picked this up a few weeks back:











And there she is, Full JHA sp-1 style sprung system. Any suggestions on carb/airbox setup with this fitted would be brilliant.

Go in deep bro, two cans one for front and rear, i recon 125s wouldn't be to overkill, maybe a free flying filter either K&N or the rick o foam, leave the needle with one shim as it will be too rich in the midrange. Pilots ate 2 &1/4 turns stay with #35 pilot jets, wont hurt to drill the vac slides to 2.5mm dia

I may have some rick o needles for sale soon dependant on how i get on with my factory pro ones.

Thanks Ricky, thinking somewhere between 120-125's will be ideal, free flowing filter, 0.5mm shim needles, 2.5mm slide holes, 2&1/4 turns on the pilots, and #35 pilot jets as a base setting and see where i stand. I have got 3 sets of carbs so i may set each up diffrently and see which one gives the best results, i think it may need a little tweaking with the RVF cams and no questening gears.

Any help with what system this is? looks a little tatty but was very cheap.

^ That does look unusual, I don't remember seeing anything like that before.

I'm sure a resident exhaust expert will have it ID'd.

DM seemed to think it could be an early two brothers system , hopefully a decent clean and fit it to the track bike.

marcus57 wrote:DM seemed to think it could be an early two brothers system

Yes the rear exhaust headers look to be a similar design.

system arrived today , looks like its stainless , will try to get into the garage to give it a quick wipe down to see.

I don't have this anymore - but was never sure what it was. Anyone got any ideas?








Oh and if anyone knows of an SP1 style system up for grabs..........give me a shout