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> Engine carnage, Incorrect clearance
nine14cats
post Sep 16 2004, 08:54 PM
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Bill Pickering -- 914-6 GT aka....Leeloo
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As many of you know I missed a shift earlier this year and blew up my 2.7L 6 at Buttonwillow. I'm currently building a new car with a 3.6. I sold my burned up motor to a raceshop and they tore down the engine. What they found was that I did not bend valves as suspected. I broke the rings on every cylinder due to incorrect head clearance.

My missed shift was going to do damage, but not this much if the machine shop I used had done the clearancing correctly. What is interesting is that on the last rebuild I did with this engine, I used a large, nationally know engine machine shop and thought I was safe.

Even if I didn't miss a shift, my engine was living on borrowed time. It appears the pistons and heads were touching. It kinda makes me lose faith in everyone I talk to in this business. I'm not a master mechanic, but the lack of of attention to detail I have run across over the past 2 years has been really disappointing. Maybe I'm just cursed.

Anyway...here's some pics of what happens when your P's hit the heads.

Bill P.


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nine14cats
post Sep 16 2004, 09:15 PM
Post #2


Bill Pickering -- 914-6 GT aka....Leeloo
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Group: Members
Posts: 2,618
Joined: 10-February 03
From: Campbell, CA
Member No.: 287
Region Association: None



Yep...I know stuff happens. And everyone that has used this machine shop has nothing but good things. The race shop is documenting everything they find and I will share it with them to just close the loop. A mistake was made.

But it's still a bummer....

oh well....now back to wondering if I'll ever get back on the track.... (IMG:style_emoticons/default/laugh.gif)

Bill P.
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