Quote:
Originally Posted by beargfr
During my last build, I tried one of the 1-piece double lip seals because it seemed like they just had to be "the answer". I followed meticulously the instructions from BOP, even the ones I got on a phone call with regard to measuring the "crush" (difference between crank diameter and seal inner diameter, sanding the outside to get the difference in spec, making sure that there wasn't any 'pucker' at the cut). I put it all together using my hoist to lower the crank into the block so I could make sure it all stayed lined up correctly, filled it with 2 gallons of oil and hung it butt down from my hoist for a week to make sure it was leak-free. It was.
In the car and running, it leaked.
Several weeks ago I pulled it again to do some other work, and this is what I found. Yes, I filled the space between the seal lips with high quality grease.
Eagle forged crank, with serrations - I didn't have it polished because I was advised "it would be ok" - and it didn't feel rough to the touch. I run main studs instead of bolts so the block was align honed for that.
This time, I'll be using the graphite rope.
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Wow ! ive never seen that happen . That must of leaked pretty good. Yeah get the graphite seal . Ive used them and they work .. The crank i just got made didnt have the serrations thank god..
Good luck..