Z1OwnersClub GB

I have a Harris exhaust with a race baffle. A straight perforated tube with no baffling material around it. If I wrap some glass cladding (?) around it, will this quieten things down a bit? Would I need to retune the carbs?

Yes a bit and possibly?

If you mean this - https://www.bikermart.co.uk/Motorcycle- ... ing-Sheets

the answer is yes.

I have swapped from Harris race baffles and to the street versions on the same jetting without much if any detrimental affects (on a standard engine with std jetting though).

My advice would be do it and run it, at worse it will run a little rich, which wont cause any damage.

Ok, Ill do dat den. Thanks.

I’d assumed that the race baffles are supposed to be be packed with fibreglass, like a dirt bike baffle. They sound much nicer with packing, booming without being too raucous.

Having run with road and race baffles with and without packing I prefer race baffle plus fibreglass packing myself.

Olly

Mr Bump wrote: I prefer race baffle plus fibreglass packing myself.

That is odd, or am I misreading this ?

ADRIAN H wrote:

Mr Bump wrote: I prefer race baffle plus fibreglass packing myself.

That is odd, or am I misreading this ?

No the race baffle is straight through but the tube is perforated you can wrap that, restricts it a bit from no packing and will quieten it a bit. The road baffle is a completely different bit of engineering which restricts the exhaust somewhat more and quietens it quite considerably.

This is what needs baffling. I ordered some material today. Hopefully here by the weekend. Ha ha ha ha! I kill me sometimes.

Back when we all had a Arris, we had one street baffle we'd pass around for MOT time, I still have the said Item, I got it chromed years ago when I was on maintainence at a electroplaters. Saturday afternoon Asian lads, plenty chrome on Jesiboy, they did the Supertrapp for my XT500 at the same time, I had to emery the joints to get it to go back together ho ho, so plenty on very shiney! its somewhere in my workshop I got a stainless race baffle made not so long ago £85 at Zorstec in Shipley

So, I wrapped the baffle today. I would say it has taken the edge off the sound. Nothing more. A bit less harsh,maybe warmer ( as someone said). Cant say more than that. Ill run it like this for a while and see if I get used to it. (Couldnt get used to the un-wrapped baffle.).
Ill let you know.

I bought a second-hand Harris pipe from this forum and have only recently fitted it to my bike. The first couple of ride-outs went well enough but today the bike kept cutting out. It would start again almost immediately and tick over but shortly after I pulled off it would stop / cut out again. Eventually, once I got it warmed up, it was ok but when I went back out later - same thing with a few, loud, back-fires too. Bike was fine on the old exhaust... Jetting problems maybe?

Sounds like your main jets are blocked and picking up dirt in the carb remove brass screws and flush out carbs

Nope, it was the little blue connector that comes from the Dyna S ignition and connects to the coil wire. It had a bad connection that was breaking down when under load. Got lucky finding it as it's something that could've got overlooked while you replace a few other, expensive parts trying to remedy the problem.