Before and during the programming of my ignition. I was unable to finish that night, or I would have gotten better overrev out of this thing...
I have seen 15 HP out of this setup before, and power was down from that, clearly. I was working on the map when I had to stop... As I was working on the ignition map, a broken reed halted progress. I suspect that the reed was failing and causing a drop in power. The crankshaft bearings were worn as well...
I replaced the reed petals, and crankshaft bearings late last week, but didn't take good time to document the progress. I took a few photos though. I also ported my reed block in hopes of a bit more power.
I was hoping to build a new engine up (have a few parts) but won't be able to get them in before TNG. I hope to find the time to get the new parts installed shortly after that.
I counted today, I have 25 scooters in the shop. I think this is a new record for October! Busy busy...
One of the maps I tried.
The reed petal that stopped my fun.
Some porting on the reed block. I hope it makes a noticeable difference. If it does, I may go back and do up one of my spare blocks a little bit nicer.
Engine out.
Engine apart, getting new crankshaft bearings.
Truing crankshaft. Got it within .003"... Still well within factory spec, but I would have liked .0015". Didn't have all the time in the world to work with it though.
Heating the crankcase half on a hot plate in order to expand the metal enough to easily install the bearing. Yeah, my cases are dirty and unprofessional. Sorry. I was just trying to get the job finished that night.
And on to the leak down pressure test! I found a leak at the oil pump. The pump is disabled, but I haven't taken time to make a proper block-off yet. I replaced the vacuum caps, and all was well. I also had to add a little sealant on my inlet manifold.
Cheers!
~Josh