.png "Powered by vBulletin")
Expert Advice please
I have burning oil on my left exhaust. The right three cylinders were about 70 to 80 psi for the compression check. My left cylinder was around 35 psi. After adding a touch of oil into the cylinder and checking the compression once again the pressure jumped up to 85. I'm seeking good advice on what is best to do at this time from people with experience. I assume I will have to pull the engine apart and change the piston rings which will then include the cam gasket, exhaust gaskets and cylinder gaskets.
-
-
I think you are quite right about taking the engine apart, but while it's apart, you might want to have a machine shop check the bores to see if they are still in spec. If the bores are out-of-round or tapered or just plain worn, you will have to bore them out to the next size, then order pistons and rings to match, so do that before you order new rings.
.sigpic
mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
Family Portrait
Siblings and Spouses
Mom's first ride
Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
(Click on my username in the upper-left corner for e-mail info.) -
Yep, even the three "good" cylinders are below spec (100 minimum) so rebuild time.Comment
-
Did you check them warm with the carbs at full throttle?
What kind of bike ya got?1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
1985 GS1150ES stock with 85 Red E bodywork.
Comment
-
Does the bike run Ok ? Those readings would make it hard to start As said! Make sure the throttle is wide open when checking. When was the last time the valves were adjusted ?Comment
-
Are those pressure values in metric units of some sort? Most of us Yanks are only familar with psi when it comes to pressure.Ed
To measure is to know.
Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182
Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846
Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf
KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-ResurrectionComment
Comment