kjh

yes i have twilster 7mil crank to go with. needs repair. its posted.

I measure 1 5/8

bump

yes looks like i may have to

i'm willing to deal, its not doing me any good sitting. per Cameron at Redline Twister can repair it.

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key way is ok i will get a pic up of it.

i ran it with no issues for a long time.

both were set up for 7mil, the head does not have interchangable domes and i don't know the cc on it.

Cub cylinders need replacing but are runable. Stock cylinders are polished, ran 68mm pistons and are clean. Cub:375 shipped, stockers 275 shipped. White Knuckle head 125 shipped. Sent from my XT1080 using Tapatalk

TM series, new rebuild kits installed, painted blue, base/clear automotive paint. Comes with xtra jets and cables 275 shipped Sent from my XT1080 using Tapatalk

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Working on pics, first time with this app Sent from my XT1080 using Tapatalk

Crank has trued by Twister 4 rides ago. Flywheel end has some damage from flywheel coming loose. I ran it like this with no issues. Or u can have it repaired. $500 Sent from my XT1080 using Tapatalk

OK thanks

Was riding today, running hard up a hill. Bike shut down and I watched the coolant hoses draining and the crank filling up. Anybody have this happen before? Head gasket? 7 mil ported cub

Cool, thanks for the help!

ok. i've never heard of lapping compound. auto parts store? what is it?

the key slot is fine, its probably questionable it the flywheel will fit tight, doesn't seem like I have a lot to loose I may is well try it is what i'm thinking. pretty cheap to buy a nut and key.

I had my flywheel nut come off, sheered the key and damaged the tapered end of the crank. the threads are ok but can i run it like this? is there anything I can do other than tear it apart and replace the crank??

I replaced all gaskets and orings and I will definitely check dome size if this isn't something easy.

So I bought a used motor running on 110octane according to previous owner. I was in the middle of a frame down project and needed to swap some parts, so I opened up the motor just to be sure of what I would be running and this is what I had: 7mm Twister Crank clutch locker 68.5 bore on stock cylinders Not sure of head?not a cool or noss? 38mm Mikuni flatslide carbs running open pods CPI pipes Motor originally built by White Knuckle Racing(don't know much about them) After inspection found some things I didn't like such as a the stock impeller, no shift mods, worn clutch. I did all the shift mods, modded star, shift pro bearing with stock spring, bearing on end Crank, shaft mod. checked crank and had it trued, new shift forks, new clutch, new pistons, honed cylinders. After rebuild compression was 140 and 142 and leak down test was solid (after sealing up intake boots). Bike started on the 3rd kick, ran strong at WOT but missed low to mid and got progressivly worse all over. 1st trip to sand thought i was chasing jetting but turned out i had a bad pingel valve, so I know the motor went lean. Have that issue fixed and now have no start. Figuring I torched it, I checked compression and got 135 on both sides. Checked spark and it is good on both sides. When I pulled the plugs, one of them had a white residue on it? Will try and upload some pics. My thoughts:Compression seems low for this motor running on 110, but it seems it should fire. Possible electrical issue? CDI? What should compression be on this motor? I know not knowing the head and dome size it hard to say but there are no markings on it, must be a custom cut. Need some ideas as I am getting frustrated.