Harley Davidson Twin Cam Compression Test

Рет қаралды 6,065

Күн бұрын

Пікірлер

@beespoon 27 күн бұрын

Try squirting some oil in the cylinder and take the compression test again. If the compression goes up at all it’s the rings, if the compression stays the same it’s the valves

@socalmotorcycleservices2876 27 күн бұрын

@@beespoon Thanks, it was a bent valve,

@gvaldezcurrie 7 ай бұрын

what is the crank runout? And what did you find?

@socalmotorcycleservices2876 7 ай бұрын

Bent exhaust valve.

@gvaldezcurrie 7 ай бұрын

thanx, That was a Fear of mine. I did my first stage 2 on my 103 with 20k. kind why i was curious about the runout. I read .03 and tehshoes where just showing tracks. replaced w/ Dual Fuelings. Nervous as all hell once complete.Replaced items: S&S lifters, Smith Bros adjustable pushrods and there " covers " , Star Racing 577 cams w/ koyo bearings. So far so good... read 200 psi both cylinder an I installed a T-Max ECU The most challenging part was TDC starting off seeing the cam chest marks was great. BUT leaking pushrod covers and retaining nut slips caused me to struggle madley to readjust correctly. Various videos where only partially helpful for the process. i know you could produce a better presentation. Thanx again@@socalmotorcycleservices2876"

@lucky8003 2 ай бұрын

AFAIK, compression testing is supposed to be done on an engine at operating temperature. Also, sometimes a blast of compressed air around the plug, prior to removal, keeps possible crud falling in. No, bud. YOU make sure the wrench says "off" to remove the plug? Guy's a hack! 88 likes?

@socalmotorcycleservices2876 2 ай бұрын

@@lucky8003 Thank you for your comment.

@warrickroper4357 3 ай бұрын

I have the same bike but my is clean and run better and it's stock

@socalmotorcycleservices2876 3 ай бұрын

Cool

@ronsampservice3066 11 ай бұрын

Why not do a cylinder leak down test? Will tell you way more than a compression test. Just sayin! Lol.

@socalmotorcycleservices2876 11 ай бұрын

We always do compression tests first and since the compression was so low there was no need to do the leak down test. Either way the head has to come off so we Just popped the head and the damage was very obvious.

@ronsampservice3066 11 ай бұрын

Very good! @@socalmotorcycleservices2876

@rexbaumgartner2011 10 ай бұрын

Did you say that bike has 6k miles in it!?

@socalmotorcycleservices2876 10 ай бұрын

The bike has 60,000 miles on it.