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FJR Motorcycle Forums
Technical & Mechanical Problems
Engine swap: any advice?
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<blockquote data-quote="Aasland" data-source="post: 1134662" data-attributes="member: 14773"><p>Ok I pulled the head to redo the #4 exhaust valve lapping. Buttoned it up, #4 cyl still leaks a bit. Ugh.</p><p></p><p>For giggles I warmed up the old engine (still in the bike) and measured the leakdown - all the cylinders showed less than 2% leakdown. Not bad for 95k !! Then I let the bike cool a day... measured again .. they are STILL better than 2%.</p><p></p><p>So ... now I'm thinking ... why am I mucking with trying to get the newer cylinder head lapped, when I've got a perfectly fine cylinder head on the old mill? Pffft. I'll just put the old head on the new block. Then I can play with the other leaky head when I have time. Like next winter.</p><p></p><p>Oh ... tip #1: Take off the inner dash plastic before putting front wheel in a chock. Easier to take things apart when you can move the forks.</p></blockquote><p></p>
[QUOTE="Aasland, post: 1134662, member: 14773"] Ok I pulled the head to redo the #4 exhaust valve lapping. Buttoned it up, #4 cyl still leaks a bit. Ugh. For giggles I warmed up the old engine (still in the bike) and measured the leakdown - all the cylinders showed less than 2% leakdown. Not bad for 95k !! Then I let the bike cool a day... measured again .. they are STILL better than 2%. So ... now I'm thinking ... why am I mucking with trying to get the newer cylinder head lapped, when I've got a perfectly fine cylinder head on the old mill? Pffft. I'll just put the old head on the new block. Then I can play with the other leaky head when I have time. Like next winter. Oh ... tip #1: Take off the inner dash plastic before putting front wheel in a chock. Easier to take things apart when you can move the forks. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Engine swap: any advice?
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