Cracked open my project RD engine and the pistons look like they've been through world war 3, as well as the heads. Can banshee heads be fixed after something like that happens? Or do you usually have to buy an aftermarket head when that happens. Only option for me with an RD engine is some old DG heads that turn up on ebay every now and then. Or buy used stockers. Would be great if somone could get all the nicks and pits out of it.

 

I have took some heads into FTZ that were ROUGH. One even had part of the crank needle bearing lodged in it. They cleaned them up and have yet to take them one that isn't fixable.

 

Where is FTZ, err what is there web page? The head on mine looks like a piece of lead that got beat with screw driver and hammer, the piston, one of the pits is deep enough you can see the edge of the rings. Ima try to get some pictures in about an hour.

 

http://ftzracing.com/, my brother races 250cc Micro Sprints and we get a lot of work and parts from them, it's one of the best places to go for 2 stroke engines.

 

Whenever my picture page becomes accesable again, tell me if that looks fixable.

 

holy crap! that head looks shot. what do you think caused that, running a little lean?

good luck with that one.

late

 

Beautiful aint it? Thats what I get for buying a 100 dollar engine.

 

damn! what the hell did they do!? thats gotta hurt. my YZ is just about as bad. lol. oh well, right?

 

I can't really tell by looking, but I am guessing it is from either too much timing (can't remember if the RD's were adjustable), too lean, fried lower bearing, or quite possibly engine sat to long. If the engine has sat for a couple of years without being ran, the rings can stick. When the rings break loose upon starting the engine, they can cause the ringland (area above the rings on the piston) to break off. The piece of piston is what actually beats up the head/piston. Since you said that yours is broke, this is what I think it is.

Is there any damage on the piston besides the pecking that goes about 1/4 inch in from the outside? What I mean is the center of the piston damgaged? If it is on the outside 1/4 inch only, then it is probably from jetting or timing. What happens is the squish area creates hotspots that melt the piston/head. Can you load a pic of the piston?

 

I put up a picture of the piston. By the way, you cant really tell from the pictures but the all of marks on both arent round, they are gashes. If you could see closer there is a little sliver of the piston missing too on one edge.