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Odd Compression Test Results

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Odd Compression Test Results

 
Old 03-10-2019, 04:59 PM
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Bottom end is yet to be determined. I think if the bores are still round, I’ll get the head fixed up and put it back together. Run it this year and plan on a bottom end rebuild next winter.

Still trying to to figure out where to get these mysterious valve seats from.
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Old 03-10-2019, 05:25 PM
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If it were me, I'd be looking for a good used engine.
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Old 03-10-2019, 05:47 PM
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Well those aren’t easy to find either.
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Old 03-10-2019, 08:41 PM
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Originally Posted by treimche View Post
@Deckoz do you know where to purchase new valve seats from?
1. You are better off determining if you can lap the valves
2. Honda does not sell valve seats. These must be custom machined. You also will likely have to have an induction heater designed to remove valve seats, and nitrogen for install.
3. if your seats really are gone and cannot be lapped or reground without going out of service spec, you are better off getting a head. Unless you have the means to do #2.
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Old 03-28-2019, 04:35 PM
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Machine shop has made some good progress. New exhaust valve seats are in. All new valves/springs/retainers/locks/seals/guides are there so they can finish up everything and I'll reinstall the head.
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Old 03-28-2019, 04:48 PM
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Oh, also forgot to post up that I measured the cylinder bores and they are all within spec. The biggest variance of .03mm is only present in one cylinder (toward the bottom of the stroke), the rest are less than that, and some cylinders are still round according to my measurements. Crossing my fingers that the bottom end will hold up for a while still.
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Old 03-28-2019, 09:18 PM
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Old 03-29-2019, 03:29 AM
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Good news. Hope this all works out, sounds like it may. Keep us posted!
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Old 04-10-2019, 08:17 AM
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If you don't mind, how much was all of that head work?
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Old 04-10-2019, 10:20 AM
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Originally Posted by treimche View Post
Machine shop has made some good progress. New exhaust valve seats are in. All new valves/springs/retainers/locks/seals/guides are there so they can finish up everything and I'll reinstall the head.
Nice, did your machinist source compatible sized seats or machine them?
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