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pics?

I'm in, and probably a couple others. Pray for a NW wind. It's backy season!!!!!!!

King, I missed out on one of those shirts. That would be great if someone brings them up on the 27th. I'll take a large.

I'm in.

Take the tank out and wire the straps to the hooks.

So, what grit stones are you guys using to hone the cyl. after boring?

Sorry for the crappy pics. I have a crappy camera. So, do I want to put roughly a 1/16 x 45 degree chamfer? I was running 93 and someone told me it would run better on 87 because of the low compression??? I will be going back to my 93.

There is heavy scuffing from the center of the intake side all the way to the wrist pin. Some very light scuffing on the two conrners of the exhaust side. The one corner has no scuffing. This was the front cyl. No I didn't do a leak down test.

That chunk at the top of the port was machined in, it is on both sides.

Yeah, I think the formula is a max. of 70% of the bore dia. These exhaust ports are under that.

I think I need to put more of a chamfer on the exhaust ports. Why do you say to resleeve?

Well, I guess I could go up one size on the low speed jet.

Yeah, that mess on the top of the piston is the chunk of piston and ring that broke off. I'll try to get some better pics.

I don't think there was any deto. (See other piston) Comp was 150, 87 octane, timing was 1 degree advanced. Shouldn't this have been alright?

These are Pro X pistons. I thought .006" would be perfect. The other piston is fine. I was running really low comp. It was at 150lbs. Here's a couple of pics of the other piston.

Well, I had .006" clearance, so that should have been fine. Here is a couple of pics of the exhaust port. Maybe there should be more chamfer, but it looked alright??

Well, I just built this big bore 61x motor. I had about 5 hrs on it, and then a chunk of the piston by the exhaust port broke off. I would like to find out what caused this. Any ideas??

I know what you mean, I have a dry pipe too. What a pain in the ??? If you want to get that thing running for the weekend, go to Bades Marine in Port Franks, (just past Ipperwash) Ask for a foot of 3.5" ID wet exhaust hose. It's about $20.00. I find this stuff doesn't last very long in my boat...

So, is the pic at the start of this thread showing advanced timing?

They are aftermarket sbn 44's.