Got the 351 kit installed! But I have a slight oil leak..
#1
Got the 351 kit installed! But I have a slight oil leak..
It looks like bubbles are coming up from right where the spark plug goes into the cylinder head. I'm not sure how this would be possible, but we dropped a razor blade when we were scraping the gasket off and had to tip the bike upside down before we drained the oil to get the blade out. Any ideas? Maybe it's not torqued correctly?
#3
That's what it seems like. The the oil just pools up in the reservoir where the plug is seated and slowly runs down the side of engine.
#4
look closer at the valve cover gasket with a flash light. it might be pooling and then boiling from heat. If it is bubbling out of the plug hole it would be oil passing the rings AND a loose plug but you would have an extreme amount of smoke IF it ran to get that much oil there, Check your valve cover gasket. When i did my kit i had to change the gasket for a leak also but it was leaking on the other side..
Glue it in place on the cover and then set it down on the head.
Glue it in place on the cover and then set it down on the head.
#5
look closer at the valve cover gasket with a flash light. it might be pooling and then boiling from heat. If it is bubbling out of the plug hole it would be oil passing the rings AND a loose plug but you would have an extreme amount of smoke IF it ran to get that much oil there, Check your valve cover gasket. When i did my kit i had to change the gasket for a leak also but it was leaking on the other side..
Glue it in place on the cover and then set it down on the head.
Glue it in place on the cover and then set it down on the head.
#6
Technically, it blows. Also, you didn't raise the compression to the point that you're blowing oil past the spark plug threads. Even if the plug is loose or cross-threaded, there wouldn't be enough oil leaking past the rings to be pooling up in the spark plug well and running down the side of the engine. It has to be coming from the valve cover.
#7
in order for oil to be coming out of the spark plug threads,,,
1, you have a crack in the head and there is an oil passage in the area.
2, the oil is coming from the combustion chamber in which if there is oil coming that route, it would smoke like hell when running (I would think).
Since you just did the 351 kit can I ask a dumb question?
did you put the oil ring and seperators in "clocked" correctly?
I don't have a spare head lying around but i can't see there being an oil passage so close to the spark plug hole. the material in that area needs to be thick.
EDIT: did you do the cam timing mod????
1, you have a crack in the head and there is an oil passage in the area.
2, the oil is coming from the combustion chamber in which if there is oil coming that route, it would smoke like hell when running (I would think).
Since you just did the 351 kit can I ask a dumb question?
did you put the oil ring and seperators in "clocked" correctly?
I don't have a spare head lying around but i can't see there being an oil passage so close to the spark plug hole. the material in that area needs to be thick.
EDIT: did you do the cam timing mod????
Last edited by GaryC; 06-25-2011 at 01:13 AM.
#8
That doesn't sound good.. Did you possibly cross-thread the spark plug and chew up the threads?! Unless it's not tightened down all the way, that's about the only other way air would come through. And even then I wouldn't think enough would come through to pool up oil.. Plus if there was that much oil in the combustion chamber, I doubt the bike would even run! And if it did you'd be burning and smokin like crazy.
And the fact that oil is even in your combustion chamber in the first place is not good. It's either coming from crankcase below and going up through your piston rings, or it's coming down from your head through the valve seals..
Are you sure you have all the piston rings on correctly and the gaps in the right spots?
Good luck..
And the fact that oil is even in your combustion chamber in the first place is not good. It's either coming from crankcase below and going up through your piston rings, or it's coming down from your head through the valve seals..
Are you sure you have all the piston rings on correctly and the gaps in the right spots?
Good luck..
Last edited by CousinLarry; 06-25-2011 at 01:19 AM.
#10
You know what,,,, lets start with the simple things first. you say you had oil all over because you flipped the bike over. take out the plug and clean the pocket first, then try it again, you might just have spilled oil into the pocket where the plug goes and the heat is boiling it up.
take a quick look first before you tear it all down.
does it run well???
take a quick look first before you tear it all down.
does it run well???