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Looks like fun!
Recently a YCS1 popped up for sale near me for cheap, I was quite tempted.

 

Who did your seat? Looks awesome!

You'd think an engine builder would be pushing for a rebuild, etc. Chuck is a class act though helping to find a cost effective way to solve this problem.

Head gaskets annealed and base gaskets on the way.

You're probably right, will do.

[does]

In case anybody is looking HVC does stock wrist pin clips for there R5 pistons.

Speaking of wrist pins. I don't remember having any trouble removing the old wrist pins. These slide a few mm but just stop in there tracks dead solid. Can't budge em...

I'm trying to re use the pistons...

I've always cracked em all and then re-torqued. That's how I was taught on 4t anyway...
next time I'll do as retaRD says.

How important are the special washers on the head bolts for these air cooled Yamahas?

Still making great power with some miles on them!

What pipes are on the RD Charlie Stg 1 bike?

Any 350 dyno pulls?

D'oh!

So it must not have seized?
Since I need new base gaskets I think I'll just grab fresh clips anyway. Hopefully I'm back to ring-dinging next weekend.
Thanks once again Chuck!
Your inscription is still very legible in the heads!

Looks like some ugliness on the intake side and a bit of charge getting past the rings but I'm not sure what else.

If you missed the second part of my "Coil Question" thread here's a quick synopsis.
My bike was losing power I ordered the Econ Cycles OEM style coils. Second ride after about 4-5miles it died. I noticed an airgap on my clear oil injector lines. Filled the tank with 32:1 or better. After a very careful easy ride home just before my driveway it died again. A couple days later I started it again and verified the oil pump wasn't pumping.

All things seem to point to an oil seizure followed by a lean seizure, right?

One thing I neglected to mention was that my fuel tank was full of a light mixture due to replacing the oil injector lines. Say 100:1 or less.

So today I took off the cylinders and the results don't look like what I've seen from seizures. I am no expert of course. What do you guys think?

Thanks

Looking at collecting parts for an RD project and I come across a bike with FPPs.
I see i8d8tr has them posted in the pipe thread. There isn't any info on what kind of power they make.
Any opinions?