Thank you NOSS

[AZ Erik]

I now have 145 psi at my current elevation of 2830 feet. This is up from a set of miss cut domes I had on the shee at came in at 105 after a fresh rebuild. The Noss domes cleaned up the compression very nicely.

 

I popped in a clutch last night as well and fired it up at about 11, neighbors wern't happy so I didn't ride it around. I will do that this weekend. Sadly when I took it out for the 20 miutes I did ride it before the domes, the left side ran lean (my CPI told me so with a nice blueing from the cyl to the bend, fuel line got pinched off on the left carb) That cyl is sitting at 133 PSI now. I know I should probably rebuild it but I wanted to get atleast 1 run in on a fresh bore and pistons with all of 20 minutes on it.

 

Should I be fine or am I just going to end up cooking this thing?

 

If it must be rebuilt again, I'll probably just pull the motor and put a stocker in it as I'm getting sick of spending 15 hours working on something I rode all of 20 minutes. What's the possibility I would be able to just re ring that piston?

[Justintoxicated]

I now have 145 psi at my current elevation of 2830 feet. This is up from a set of miss cut domes I had on the shee at came in at 105 after a fresh rebuild. The Noss domes cleaned up the compression very nicely.

 

I popped in a clutch last night as well and fired it up at about 11, neighbors wern't happy so I didn't ride it around. I will do that this weekend. Sadly when I took it out for the 20 miutes I did ride it before the domes, the left side ran lean (my CPI told me so with a nice blueing from the cyl to the bend, fuel line got pinched off on the left carb) That cyl is sitting at 133 PSI now. I know I should probably rebuild it but I wanted to get atleast 1 run in on a fresh bore and pistons with all of 20 minutes on it.

 

Should I be fine or am I just going to end up cooking this thing?

 

If it must be rebuilt again, I'll probably just pull the motor and put a stocker in it as I'm getting sick of spending 15 hours working on something I rode all of 20 minutes. What's the possibility I would be able to just re ring that piston?

 

I would not ride it, I would pull the cylinders and look, it might cost some money for new gaskets but should not take 15 hours. Hell you might be able to tell just from removing the head. There is too much of a difference in compression between the two sides to have it safe to ride (don't want to damage teh crank either). your compression will increase after some hours on the bike and the difference between them will likely increase as well if something is wrong.

 

First thigns first, definately do another compression check.

 

Be careful routing the fuel lines, maybe get a pingle so you don't have to worry about one side leaning out.

[AZ Erik]

CYL's still are flawless with perfect cross hatching. They have a totall of 20 minutes, if that on them. It got lean and I stopped riding it. That's why I was hoping I could re-ring it. so once again I end up chucking more money at it and have to do it again. I'm going to stick the compression gauge on it tomorrow to see if anythings changed in the 3 minutes it ran last night and do the compression check when warm. If not it will be forsale shortly, sick of this crap already, my 2001 has only required a few minutes of work and I've ridden it for 8 hours in the last trip.

 

(The 15 hours is pretty much from the time I got it. First with an electrical problem, then low compression that because rebuilding the top end, then the domes, now the rings and clutch and still this hard starting issue, I have about 15 hours into a bike that's ran all of 20 minutes)

Edited October 21, 2006 by AZ Erik

[dawarriorman]

Honestly, it sounds like you just aren't cut out for a banshee then. Get rid of it if you must, but its not that big of a deal. These kind of things can happen. It is possible that all you need is new rings, although I'd bet you'll need a new piston too. One of the most important things to do when you put it back together is make sure stuff seals right. Any doubt in your mind that the gasket surface isn't good, use RTV. Always use new gaskets, torque everything perfect, and check it. On the intake and reeds make sure and tighten them good, using gaskets on both sides. The carb boots show the slightest signs of age, replace them.

 

Honestly it isn't that big of a job, take the tank and front plastics off, take the pipes off, disconnect the throttle cables, and move the wiring out of the way. After that take the head and cylinders off, and your there. No problem to get it done and put together in 4 hours.

[AZ Erik]

Honestly, it sounds like you just aren't cut out for a banshee then. Get rid of it if you must, but its not that big of a deal. These kind of things can happen. It is possible that all you need is new rings, although I'd bet you'll need a new piston too. One of the most important things to do when you put it back together is make sure stuff seals right. Any doubt in your mind that the gasket surface isn't good, use RTV. Always use new gaskets, torque everything perfect, and check it. On the intake and reeds make sure and tighten them good, using gaskets on both sides. The carb boots show the slightest signs of age, replace them.

 

Honestly it isn't that big of a job, take the tank and front plastics off, take the pipes off, disconnect the throttle cables, and move the wiring out of the way. After that take the head and cylinders off, and your there. No problem to get it done and put together in 4 hours.

 

The thing is this is the 4th time I will have torn the top end down on this one in 20 minutes or run time. I have a 2001 with some mild porting and pretty much the same intake and exhaust set up but this 89 is completely kicking my ass. The other one overheated big time and hell it's still running on the same bore pistons and rings with no issues. Still cranking out over 160 psi (on stock cyl's) That ones been taken appart to be checked but still runs perfectly fine. It's this one and the fact I took a change on a stroker, appearently built by a rookie and now I'm feeling the brunt of it in my pocket. I'm perfectly well off with a dune ported 350cc shee, but I was talked into this one as it is 'the shit'. I guess he ment it needs all the shit replaced. we found more things like the air screws being 4.5 turns out and the needles beeing on the bottom clip, crap I just never thought to look at as the motor as 'professionally set up and built' It appears I was lied to. I wouldn't sell the whole bike, just the motor, swap it with a fresh dune 350 maybe 370 and stock stroke.

Edited October 21, 2006 by AZ Erik