Major oil leak  By  lain (Read 3,095 times)

K, Good
Now get that Torque Wrench, Learn how to properly use it, practice.
De-grease that whole thing too.

So I rebuilt it, made my own base gasket with felpro gasket materials, seems very similar to the silver stuff but stronger. I used a new head gasket of course. Honed he cylinder, used new rings, all lined up correctly on install... Correct torque wih torque wrench I borrowed. New Studs... Noticed while installing the base gasket the bottom under the cylinder kept bending out a little bit, maybe the case is warped?

All works good but now it idles high then evens out and when decelerating i hear slight grumbling. Seems there is an air leak or something now......

I am honestly done with this engine, over 40k miles it needs to be retired... I am going to focus on seeing if my spare engine with the locked piston will have enough good parts to use for a new BBK project...

Well seeing as I used this scooter engine to make about $17K total last summer as a delivery scooter driver I think so lol. I just hate to see it go ya know?

So just to update; I installed the new oil seal today and the problem is gone.

Getting the old seal out was very tricky, had to use a paper clip, steak knife, and tweezers. I used the knife to cut the seal a bit when it was stuck all the way in to make an entry for the paper clip. I used the tweezers to pull it out a little bit, was very hard because they kept bending out and slipping. Then curled the paper clip and hooked the seal and pulled out. The paper clip bent out a couple dozen times, but every pull got the seal out a little more each time. When it was halfway out I could no longer get the paper clip in so I greased up the knife and slid it between the crank rod and the seal and pushed it against the case and popped it out. I did damage the case around the outer part of where the seal goes, but apparently not enough to make a difference as it was only on the outside lip of it.