Engine Autopsy, finally got it apart to figure it out |
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Engine Autopsy, finally got it apart to figure it out |
ws91420 |
Aug 3 2010, 08:18 PM
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#1
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Yes I have one a Lensley 914 Group: Members Posts: 2,063 Joined: 10-September 03 From: Ruther Glen,VA (halfway between sticks and civilization) Member No.: 1,137 Region Association: MidAtlantic Region |
Well I finally got around to pulling my engine apart to find out what happened.
The backstory I was returning from an event somewhere when about a mile from home I hear a awful noise and loud clatter. I had no loss of power and drove the rest of the way home. Rented a trailer and towed to my Mom's and the engine finally got pulled out last year. Time passed and I finally startred to pull it apart. I had been thinking possible connecting rod bushing problem at the wrist pin as I did not rebush those at the time of the rebuild. Well here is the results. Question can the washer be machined out of the head? Is the piston still usable? Opinions welcomed. Attached image(s) |
ME733 |
Aug 5 2010, 11:36 AM
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#2
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Senior Member Group: Members Posts: 842 Joined: 25-June 08 From: Atlanta Ga. Member No.: 9,209 Region Association: South East States |
..........Replace the piston and cylinder they are trashed. ..The rod bearing on that cylinder will be flat spotted, and junk. it,s possable the connecting rod is bent, but the ROD bolts should be replaced.....center main bearings may also be flat spotted....the HEAD should be stripped , glass beaded and checked for cracks....then with porting tools/etc/ remove the scars and metal bits...check the valves for that cylinder, more than likely they will need replacing, and ,at a minimum that head should have the valve seats recut....stainless steel nuts and split washers should only be used on the exhaust sytstem and only for metal to metal securing., Never/against/ with aluminum.....
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Cupomeat |
Aug 5 2010, 11:59 AM
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#3
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missing my NY 914 in VA Group: Members Posts: 1,336 Joined: 26-November 07 From: Oakton VA Member No.: 8,376 Region Association: MidAtlantic Region |
..........Replace the piston and cylinder they are trashed. ..The rod bearing on that cylinder will be flat spotted, and junk. it,s possable the connecting rod is bent, but the ROD bolts should be replaced.....center main bearings may also be flat spotted....the HEAD should be stripped , glass beaded and checked for cracks....then with porting tools/etc/ remove the scars and metal bits...check the valves for that cylinder, more than likely they will need replacing, and ,at a minimum that head should have the valve seats recut....stainless steel nuts and split washers should only be used on the exhaust sytstem and only for metal to metal securing., Never/against/ with aluminum..... So you are saying he should run it as it?????? (IMG:style_emoticons/default/lol-2.gif) Sorry, I agree, but as the original poster is so optimistic, this doom and gloom post struck me as funny. |
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