mpbanshee

Did you possibly put the slides in backwards? The half-moon shaped cutaway should face the airbox.

Wrecker... Here ya go

Someone else asked that same question not more than a couple weeks ago, and there were alot of good tips. I'll try to find it and bump it to the top for you.

Were the second set of plug pics from a WOT run? If so, you are a tad on the rich side. Unless it stumbles at WOT, I would leave it alone. Better to be a bit rich than a bit lean.

I felt my clutch slipping last time I rode, so I assumed my plates/fibers need to be replaced. When I drained the oil it looks like I had some coolant leak into the oil. So now I'm thinking that this may be what was causing my clutch to slip. However, I took the clutch apart anyhow to inspect it. How can I tell if the fibers need to be replaced? Is there a certain height the raised areas on the fibers are supposed to be?

If your plugs look good with a 400 mains, I'd bet you have an air leak somewhere.

I would say 30 pilots, needle clip on middle groove, and somewhere between 290-320 mains. Do a WOT plug reading to dial it in.

OK, here goes. First, take or send the jugs and head to a reputable shop, and have them inspected to see how much they need to be bored to clean them up. Next, order the appropriate size top end kit (pistons, rings, bearing, and gaskets). Have the jugs bored and honed for the new pistons, and the head resurfaced and install the new top end. Then, clean the carbs out really thouroughly and set them back to stock jetting (200 mains, 25 pilots, needle clip on middle groove, and 2 turns out on the air screws). Finally, the hole in the expansion chamber needs to be fixed. This is where two strokes make their power. It should run much better after you do this stuff... Once you are done, you may need to fine tune the jetting.

What kind of pipes?

Yes, they do. I believe they are cut from the same jig.

I noticed that my trans oil is a little milky, like coolant has leaked into it. I am going to replace the seal and bearing on the impeller, and hopefully that takes care of it . I was wondering if anyone has ever had a problem with coolant leaking at the tube where the coolant enters the clutch cover?

I love my Dave Moore Racing motor

I'm confused. Can you explain more?

Start with a 300, and come down till it doesent stumble when wide open in 6th.

I would chack for air leaks. That souds pertty big on the mains...

Agree 100%. Call a reputable builder, and spend a few bucks to have it done right. You wont save yourself money by having to buy new jugs...

Are these plug pics from a WOT run, or did you just ride around, shut it off, and pull the plugs. If that is the case, you plugs are normally gonna look like that. Adjusting the airscrews will dial in the jetting up to 1/8 throttle or so. Anything above that is handled by the needle and main jet. I would start with the needle in the middle groove. Also, have you done a compression check lately? Please post some plug pics after a WOT run, and we can help you better.

If your builder raises the exhaust ports, that will help lower compression. You will just have to check it when it is done.

Banshee's don't have rev limiters. He is referring to the parking brake safety switch.

My motor was ported by Dave Moore (davemooreracing.com). I am very happy with it. If money is a concern, you could save some by having the stock head reworked, rather than shelling out the cash for an aftermarket head.

A fresh stock banshee motor should be more like 125, not 155. Anything under 100 PSI, or more than a 10% difference in pressure between the two cylinders means you are ready for a rebuild (on a stock motor). Also, two strokes do not have exhaust valves. I don't think thats what he was saying, but just to clear up any confusion for a new 2stroke owner...

Anything less that 100 PSI, or a 10% difference in compression numbers between the two cylinders, and its time for a rebuild.

In that case...GO FOR IT! You can usually find some pertty good deals on used stock jugs on ebay. Gonna need a bunch to practice on :thumbsup:

Niether of the pics are very easy to see. However, from what I can see, you may be a tad rich. As long as it doesen't stumble when you are wide open in 5th or 6th, I would leave it like it is. Safer to be a bit rich than a bit lean.

What are you refering to when you say "they are being welded?" What type of riding are you going to be doing?