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Author Topic: So I AM burning oil! (Still)  (Read 7722 times)

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Offline Davez134

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Re: So I AM burning oil! (Still)
« Reply #50 on: December 08, 2016, 07:24:32 AM »
Quote from: PeWe on December 08, 2016, 06:29:07 AM
This engine has fresh honed bores, new piston rings and correct end gaps not too small?

Yes, this engine was a fresh build about 2 years ago. New pistons, rings, bore/hone. I personally set ring gaps so I know they are right. I'm pretty sure it is head and not cylinder related.
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Offline PeWe

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Re: So I AM burning oil! (Still)
« Reply #51 on: December 08, 2016, 08:23:21 AM »
Ok, so it has been running Ok for a while until burning oil?
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CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Davez134

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Re: So I AM burning oil! (Still)
« Reply #52 on: December 08, 2016, 08:33:59 AM »
Yes, and still running great
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Offline FunJimmy

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Re: So I AM burning oil! (Still)
« Reply #53 on: December 08, 2016, 09:23:25 PM »
Quote from: Davez134 on December 08, 2016, 07:24:32 AM
Yes, this engine was a fresh build about 2 years ago. New pistons, rings, bore/hone. I personally set ring gaps so I know they are right. I'm pretty sure it is head and not cylinder related.

Interestingly my 550 started to burn oil this summer too. Went into winter storage last fall in seemingly excellent condition. Woke this spring with an annoying oil burn. Spark plug in cylinder #4 is really black. Thought it might be valve seals but haven't spent much time investigating. Going to do a leak down test soon and may have to try this spiffy valve removal technique. Thanks for posting it.
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You never see a motorcycle parked outside of a psychiatrist's office!

CB550 Cafe Interceptor a Gentlemans Roadster
http://forums.sohc4.net/index.php?topic=27159.0

Offline joeyvans

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Re: So I AM burning oil! (Still)
« Reply #54 on: December 09, 2016, 02:14:56 PM »
Subscribed for future reference.... great thread.  Sorry you are dealing with this Dave.  Get it resolved and enjoy your prime riding season.
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1976 CB550 K2
Non-SOHC4 - 1974 CB450 K7
Non-SOHC4 - 1996 VFR750F

"No matter how much you shake and dance... the last three drops go in your pants."
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