Doddy

Thanks for the info. I'll try it.

I heard a noise in the right side case and thought it might be the idle gear. Did some research on here and found out that was in fact the problem. I took it apart and got the new parts. My question is how do you get the old bushing out and new one in? I don't have a press so is it best to just take it to a shop and have them do it for me, or is there an easy way I can do it at home with out a press? Thanks.

Thanks for all the help guys. I will fix the problem tonight.

Must be it. I would respond in kind, but I have a feeling your teams record speaks for itself.

What do you mean "Chase" the threads? You mean run a tap through them? If I have to tap the thread I need to pull the head back off. Can I re-use the O-rings that I have in there (the bike has not been fired up yet) or are they pretty much shot after being torqued down the first time?

Yeah they are brand new, and I put them in and took them out like three times. I'm going to have to do it a couple more times when I get home tonight so I can do a compression test prior to starting her up. Super tight to keep them from backing out? That's fucking retarded, I feel like I am having to torque them down way to tight.

So I just put my new Modquad head on yesterday and I was trying to put the spark plugs in and it was extremely tight. I was wrenching pretty hard to get the plugs to tighten all the way down. I know I was putting at least 50 ftlbs of torque to thread these fuckers in and that just doesn't seem right to me. No I didn't cross thread them and it was on both sides, not just one. And before I get any questions about using the right plugs they are NGK B8ES plugs, and they were brand new out of the box. Has anyone else had issues with these domes before? I just don't want to fuck up anything on a fresh rebuild.

It was a builder down in Salem. I'm not going to start posting up names to flame anyone but let's just say I will not be going back. This is the second motor that has blown on me, at least this one made it two years, the last one only made it two rides and this is what it looked like. I took it back to him and had it rebuilt. He probably added all of the gasket sealer because he wanted to "make sure" it didn't leak and blow my motor again. Oh well you live and you learn.

Yeah I'm not too happy about it. I didn't setup the engine last time it was rebuilt, it was setup by the same shop who ported the motor (which worries me as well). I've already gone through and started cleaning all the silicone off the cylinders and head. Now I need to take some timte to make sure I get it all and blow the cylinders out. Luckily I caught it before it completely burned through and fucked up the cylinder walls.

Found the problem. Apparently we had some detonation. Time for a new topend to go along with the new impeller and drive gear.

Radiator is in pretty good shape. It did occur to me, just doesn't seem to be the issue. There are a couple bent fins but a majority of the surface area is OK. It probably is a combination of a few different things.

Went ahead and bought a new billet impeller and drive gear from Mull Engineering, figured I may as well since I have it torn apart. Still don't know what the real problem is though, I guess I will replace the head gasket as well for good measure and hope that the ghost disappears. I just hate fixing things and hoping that it is going to solve a problem that I haven't correctly identified. Oh Well. Thanks.

I know I should get a billet impeller, but that does not seem to be the problem at this time (I realize it will be at some point in the future). There is a little bit of play on the impeller shaft, but from what I can tell the grooves on the inside of the drive gear are in good shape and not stripped out. I put the case cover back up and put the kick starter back on and cranked it down a few times and it moved the impeller so I don't think that this is the problem, but it is possible.

ISSUE: overheating THINGS I'VE CHECKED: Jetting - OK Impeller - OK Drive Gear - OK Leak Down - OK And the Novel: The last couple times I took the Banshee out it has started overheating within 10 minutes of riding. It jumps up to 205-210 and I have to shut it down. It will cool down slightly to about 195 -200 if I am just cruising along the beach but as soon as I hit the powerband it jumps right back up again. It has only been about 75 out and I have not really ridden it hard (no tree shots or drag racing) so there is no reason it should be that hot from normal riding conditions. I took the bike back to camp and checked the coolant and it was pretty low, so I filled it back up with Water Wetter which is what I always run and went back out. It immediately started overheating and spitting an excessive amount of coolant back out the overflow. My First thought was jetting - I checked the plugs and they are both a nice chocolatey brown. I even tried race gas to see if that would cool it down thinking I wasn't running a high enough octane fuel and it was leaning out. So I got it home and tor into it thinking it was probably the impeller or drive gear. Checked them and the gear looks OK, normal wear, the impeller still spins although there is some resistance from the bearing not spinning freely, however I checked and it did spin when I cranked the motor. The impeller is pretty discolored (orange) but isn't cracked or really worn so I don't think that this is the issue. Next thought is the head gasket so last night I made a leak down tester and checked that. The only slight leak that I found was around the intake cross over and once that was tightened down it held fine for 6 minutes. So now I really am at a loss. It is always bad when you start working on your bike and you hope that you find SOMETHING wrong. Next step is the radiator and cap. I know that the radiator is pressurizing the line because like an idiot I pulled the coolant line prior to releasing the pressure and got a nice face shot from my banshee. It looks a little rusty in my radiator although the fluid wasn't discolored (probably because I just added it), it has been in the past. Could the extra iron in the water be causing my bike to boil over possibly? Sorry for the novel but I have exhausted everything that I can think of so any help would be appreciated. Please Help!

The course was Claremont out in Bethany off of Hwy 26.