Search 650Rider.com and XS650.com using Google!
|
| |
|
|
xs650 > > High Performance Modifications > > Top End Work > > Burning Oil Good Compression |
---|
Burning Oil Good Compression
|
Author |
Message |
Rickrod Full Member
Joined: Nov 16, 2008 Posts: 68 Location: New Jersey
|
Posted: October 4, 2009, 7:53 pm Post subject: Burning Oil Good Compression |
|
Hi all:
I checked my compression 150PSI in both cylinders.
Yet My engine consumes about 8oz every 60 miles.
A friend I rode with told me when I hit the gas the bike smokes pretty good.
I read about XS John's baking soda trick which I'm willing to try but; before I do I have a question.
Could cylinders be glazed even with good compression
I have also been looking into the valve on the breather does not seem like there is a lot of room to work.
does anyone have any tips that have done this mod.
BTW I'm running a 79 special.
TIA
Rick
|
|
Back to top |
|
|
xsjohn Full Member
Joined: Jul 30, 2006 Posts: 5857 Location: North Carolina USSA
|
Posted: October 4, 2009, 9:58 pm Post subject: Re: Burning Oil Good Compression |
|
Could be valve seals.... ? ......
Always good to leave pistons in the bore if compression is good........ doesn't sound reasonable for the cylinders to be glazed with 150 psi cranking compression......oil rings could be suspect but that is not a common problem......... RG's oil burning problem was pulling oil in from the tunnel...(headgasket)..... from the PO not torquing the head maybe.....but I wonder what his compression was ....
xsjohn
|
|
Back to top |
|
|
Skip Full Member
Joined: Aug 13, 2007 Posts: 68 Location: Timberlea,Nova Scotia.
|
Posted: October 4, 2009, 11:38 pm Post subject: Re: Burning Oil Good Compression |
|
I had the same problem that RG had with his oil burning.
Oil was entering accross the head gasket at the cam chain tunnel.
Was very evident on dissassembly as the head gasket was very wet when the cylinder head was removed.
My compression was 140 plus in both cylinders.
My oil consumption was very little,but smoking out of LH cylinder on upshift and downshift.
_________________ "Ill fix it till it's broke!"
1978 XS 650 SE
Looking for a "one of a kind" gift for your wife?
Please check out my wifes web site!
www.dlgcreations.com |
|
Back to top |
|
|
Skip Full Member
Joined: Aug 13, 2007 Posts: 68 Location: Timberlea,Nova Scotia.
|
Posted: October 4, 2009, 11:44 pm Post subject: Re: Burning Oil Good Compression |
|
Just checked my notes,sorry but my compression was 130 psi on both cylinders.
(Don't know why I could not edit my post????)
_________________ "Ill fix it till it's broke!"
1978 XS 650 SE
Looking for a "one of a kind" gift for your wife?
Please check out my wifes web site!
www.dlgcreations.com |
|
Back to top |
|
|
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum You cannot attach files in this forum You cannot download files in this forum
|
|
|
|
|
Check out the new Honda CB750 Forum at CB750.com! A site dedicated to the great Honda SOHC and DOHC CB750.
Check out the new Yamaha XS400 Forum at XS400.com!
Yamaha xs650
xs650, xs, 650, forum, links, chopper, custom, yamaha, parts, forum, info,
information, bb, bulletin board, XS650 650Rider, Free Unrestricted xs650
forum, Personal photo albums, Post images in Forum, News columns, Daily blog,
Links, Event calendar, Information for Yamaha XS650
Interactive software released under GNU GPL,
Code Credits,
Privacy Policy
|