Thanks for the tips Tmoose,
I have not had a chance to get back to it to inspect since pulling it back down. I might not replace the piston heads but am prepared to if there is any doubt of their integrity.
Getting back to your original questions - 1) It ran perfectly with the fresh top end for...
Thank you all for your feedback.
To answer some questions:
Leak-down test 15% on front cylinder = OK; 40% on rear cylinder = problem
Pulled down top end again and currently inspecting rear piston, cylinder & rings
Next Action:
Hone both Cylinders
Replace both Piston Heads
Replace Rings again
Put...
Thanks Guys,
I was hoping this wasn't the case as I recently pulled down the whole top end and replaced cylinder rings, seals & gaskets, also replaced clutch/pressure plates & stator. Didn't want to pull it down again but I guess I may have to.
I will run compression/leak down tests first...
Long story short; My '89 Sportster 1200 recently overheated when I left it idling too long. Ran like a dog when I go back on, coughing & spluttering. Turned it off and oil came spilling out of the carby air filter cover (presumably from the vent hose). Changed oil & filter; cleaned out...
