'82 GPz750 Exhaust replacement options?

swest wrote: Pic?
Steve

At the moment...

Ok I got the header on.






I had to push the oil cooler lines back just a bit as they were pushing right up on the crossover.



I had to take off the center stand which is something I was hoping wouldn't be the case. I guess I'll have to get a paddock stand.





I haven't found a suitable clamp yet. I was close but it wasn't quite small enough. I am using aluminum muffler repair tape as a gasket which actually seems to work well. I'll have to rig up some hangers too.

I think I've figured out hangers. The stock right hanger was cracked pretty bad. It looks like it had been repaired once but had cracked again parallel to the repair.

I swapped the left hanger to the right and it's positioned perfectly so I can run a 1/8x3/4" piece of aluminum strap with a half twist up to the Kerker mounting point.

I should be able to run another piece of strapping from the motor mount bolt just ahead of the foot peg down to the exhaust clamp.

GPzMOD750 wrote: ...
I should be able to run another piece of strapping from the motor mount bolt just ahead of the foot peg down to the exhaust clamp.

Scratch this. I realized that bolt runs straight through the crank case. I don't want to mess with that. Maybe I'll just use some sort of spring set up off a different point. I have some old drum brake springs scattered around.

Mounting done! I hope.

It's very solid so I'm thinking I won't have to put a hanger at the collector. Found the clamp at Napa, super solid fit. O'Reilly's had the same clamp for nearly half the price but would have taken nearly a week to get in.

I can't decide if the hanger looks ghetto or not. It fits like a glove especially considering the haphazard method of measuring and fitting the thing, probably used up all my luck for the rest of the year.

Pics?
Steve

swest wrote: Pics?
Steve

it's there, didn't take on the first upload.

I guess I should be fairly pleased considering I'm barely over $100 for the whole setup.

I put it together and it sounds awesome, It isn't loud like i expected, actually not as loud as before. It sounds more like a performance quad than a beat up bike with leaky exhaust. I did get some popping on down shift and deceleration. I'll adjust the carbs tomorrow and if that doesn't help I'll re-jet and see how that goes.

Look at your plugs.
Steve

swest wrote: Look at your plugs.
Steve

I will.

I adjusted all the primary jets out a turn and re-balanced the carbs and it's running much better. Gets up a goes like they are giving out cash prizes at the destination.

No popping just a hint of a putt-putt when closing the throttle. More of a sport bike buzz tone than a leaky pipe grumble.

It would be nice if you could just angle the tailpipe up a bit, also increase ground clearance.

That rear clamp isn't up to it, if you drill the rivets out of the can you can work from inside and move the rear hanger mount further back a bit.

IMO a bit of popping on the overrun is no big deal, as you noticed you can tune the worst of it out on the pilot airscrews

I was thinking that too. They're just pop rivets. You could drill the heads, move the muffler to 90* and reattach the end with pop rivets and use a flat bracket.
Steve