My Sturgis Pics for 2010

Nope, this is the right place for them.

I didn't make it this year. A couple of weeks ago I started getting an intermittent loud rapping sound at all speeds. When it finally happened in the garage at idle I was able to get a stethoscope on it and found it was the front exhaust valve. I swapped out the front two lifters but it did not solve the problem and it finally got worse. I installed a pressure gage to make sure it wasn't oil pressure. I know I was having a small valve seal leak in the front so I figured that maybe it was creating so much carbon deposits that it may have started to hang up the exhaust valve. Here are the pics of my trip to Sturgis 2010.

Looks like a lot of carbon deposits. Does anyone think it could have stuck the exhaust valve open? I'll take it to the speed shop on Monday.

Yesterday my indy owner and I took the exhaust valve out and the valve seal fell out on the table. These heads only have less than 5k on them. I guess you get what you pay for. I got them off ebay as "new" SE heads from Chillicothi, OH HD dealer for I think it was $675.00. The carbon build up was so bad that it pitted the exhaust valve face so i had to get that dressed up too.

I'm going to have to scrap the top of the piston off as well.

To prevent this, I usually run a tank of racing fuel through the bike to help prevent build up like this. That is a lot of carbon build up for less than k on them. glad you were able to get it worked out fast before it caused more issues. :witsend:?

All the carbon was from the oil being sucked past the valve seals that wheren't in place right. I don't think it was from fuel.

I had to pull the pistons tonight. It was the only way to clean them off too. I got to clean the pistons and scrap the gasket areas on the jugs.... all the tedious crap. The inside of the cylinders are looking good. They didn't get scratched from all the carbon build up on the pistons.

I got to entertain the o'lady for a couple of days first, prolly finish it this weekend.

kenfuzed, Yup, got both heads off and gave them to Mark at American Motorcycle Shop near San Bernardino. He's a one man shop, and old timer that works mostly on knuckles and pans. He's gonna replace all the valve seals and clean out all the carbon and dress up the one exhaust valve that got all pitted

I got the pistons on my bench at home and will start to clean them off with the dremmel tomorrow. I just got back from Morrow Bay with the wife so now it's back to working on the bike

hotroadking, I used to route the breathers to the ground but now I got that Arlen Ness backing plate so I cant do it. I may have to look for the other type of backing plate. I got the S&S breather so I don't have to worry bout breather timing and it's an EVO so I don't think oil pump alignment matters. But, I could be wrong, God knows, I been wrong before

I'll let you know how it goes.

Wouldn't plugging the banjo bolts block the air from coming out of the head?
Wouldn't you want to block the passages in the backing plate?

I think that's what he meant or at least that's the way I took it.

I got engine all back together over the weekend. All seems to be running good now. I drove it to work this morning. So far so good.

I'm going to check the condition of the plugs from time to time before I do that modification to run the breathers to the ground, although I like what he did in the picture. I know I could do that.

I'm wondering if I should try to make the hole in the bolts smaller? It just seems to me to be an awfully large hole through the bolts and through the backing plate. Maybe I should add a little restriction like close off some of the hole. I don't think the twin cam heads have as big a bolt as the EVO heads do? But, I suppose it will just fill up with oil after not so long. The umbrellas are a stupid design I guess.