I'm about done with this engine.

[DAMIEN1307]

this engine was like owning a vw.

Sounds more like a Yugo to me...lol...DAMIEN

 

[Josh_wilcoxx]

Sounds more like a Yugo to me...lol...DAMIEN

True haha

 

[LewieBike]

Junk those crap carb gaskets. Go drop 10 bucks at the auto parts store on a sheet of 1/16th - 1/8th intake gasket maker. Cut your own. Solves the carb leak problem usually. Try sanding the intake and manifold flat as well. Check your base gasket for leaks and look inside the covers at the main seals if the base and intake gasket are ok.

You might want to suggest removing the intake manifold from the engine before any dressing down of the manifold spigot, just to keep the swarf out of the engine, and clean spotlessly before installing. Frankly doing this by eye with a flat file is asking to make the problem worse. Most of the alloy cast intakes are already machined to as square as you can ask for, replacing the O ring or using a Viton square cross section O-ring would be better.

 

[Wrench]

Frankly doing this by eye with a flat file is asking to make the problem worse

Who suggested to do it by eye and use a flat file?

 

[LewieBike]

Sanding it would be better?

 

[Wrench]

Sanding it would be better?

Yea, I think that is what was suggested in the first place

 

[Jayraye39]

Anytime you open up the pathways from port to inside the engine like taking off the carb, muffler, plug . tape them off. the smallest fragments that get inside the case or cylinder itself has the potential to fugg everything up. Not fun buying entire half's of the engine. When you do and don't know what your doing you going to start mismatching parts and would have clearance issues. For instance their are several diff
pistons. May look the same but their not

 

[Mudflap]

Haven't seen crank seals mentioned.

 

[Wrench]

Haven't seen crank seals mentioned.

Thanks for pointing that out
Chainlube in post#6 mentioned to check the lower case for air leaks but he didn't say check the crank seals

Four possible areas for air leaks, carb to intake, intake to cylinder, cylinder to case and the lower case itself. Three of those are fairly easy to correct but the case has three hidden screws behind the clutch that have to be addressed.

 

[Karl Snarl]

Well OP, did ya get it solved? Or are you really going to give up on the best hobby in the world, putting motors on things.