So can anyone surmise as to what caused this to happen ? 
Lost a cylinder
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 3,323
Likes: 142
From: Green Valley Arizona
Oldguard7: Let me re-state my question...I know what valve to piston clearance is....my question was with regard to the Edelbrock E-Street heads requiring additional valve to piston clearance....how much is additional??. I do not want to buy these heads only to find out they will not work on my engine.
Now as far as what caused this...?????...I would like to know myself. I can see WHAT happened....I just do not know why...
Again these are re-worked GM 882 heads that I bought from a machine shop on-line....so as to the quality of their work...???? I did get 8 to 9K miles on them....so???
Now as far as what caused this...?????...I would like to know myself. I can see WHAT happened....I just do not know why...
Again these are re-worked GM 882 heads that I bought from a machine shop on-line....so as to the quality of their work...???? I did get 8 to 9K miles on them....so???
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Valve float. Either a weak spring or to many RPM.
I would buy a set of AFR 195's because of the lightweight valve train components and beehive springs. They will allow about 500 more RPM before valve float with all else being the same. Hate to see you get it all back together and do the same thing. Check the cam lobe and lifter bottom while you have it apart. It looks like the valve just kissed the piston top. I bet the bottom end is fine. Your lucky. I did this before and nothing below the intake was salvageable.
I would buy a set of AFR 195's because of the lightweight valve train components and beehive springs. They will allow about 500 more RPM before valve float with all else being the same. Hate to see you get it all back together and do the same thing. Check the cam lobe and lifter bottom while you have it apart. It looks like the valve just kissed the piston top. I bet the bottom end is fine. Your lucky. I did this before and nothing below the intake was salvageable.
Melting Slicks
Joined: Jul 2010
Posts: 2,759
Likes: 820
From: SUFFIELD CT USA 2023 C8 CORVETTE UN-MODIFIED FINALIST
2023 C8 of the Year Finalist - Unmodified
Valve float. Either a weak spring or to many RPM.
I would buy a set of AFR 195's because of the lightweight valve train components and beehive springs. They will allow about 500 more RPM before valve float with all else being the same. Hate to see you get it all back together and do the same thing. Check the cam lobe and lifter bottom while you have it apart. It looks like the valve just kissed the piston top. I bet the bottom end is fine. Your lucky. I did this before and nothing below the intake was salvageable.
I would buy a set of AFR 195's because of the lightweight valve train components and beehive springs. They will allow about 500 more RPM before valve float with all else being the same. Hate to see you get it all back together and do the same thing. Check the cam lobe and lifter bottom while you have it apart. It looks like the valve just kissed the piston top. I bet the bottom end is fine. Your lucky. I did this before and nothing below the intake was salvageable.
Melting Slicks
Joined: Apr 2002
Posts: 2,337
Likes: 14
From: Norfolk VA
Oldguard7: Let me re-state my question...I know what valve to piston clearance is....my question was with regard to the Edelbrock E-Street heads requiring additional valve to piston clearance....how much is additional??. I do not want to buy these heads only to find out they will not work on my engine.
Now as far as what caused this...?????...I would like to know myself. I can see WHAT happened....I just do not know why...
Again these are re-worked GM 882 heads that I bought from a machine shop on-line....so as to the quality of their work...???? I did get 8 to 9K miles on them....so???
Now as far as what caused this...?????...I would like to know myself. I can see WHAT happened....I just do not know why...
Again these are re-worked GM 882 heads that I bought from a machine shop on-line....so as to the quality of their work...???? I did get 8 to 9K miles on them....so???
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 3,323
Likes: 142
From: Green Valley Arizona
Valve float. Either a weak spring or to many RPM.
I would buy a set of AFR 195's because of the lightweight valve train components and beehive springs. They will allow about 500 more RPM before valve float with all else being the same. Hate to see you get it all back together and do the same thing. Check the cam lobe and lifter bottom while you have it apart. It looks like the valve just kissed the piston top. I bet the bottom end is fine. Your lucky. I did this before and nothing below the intake was salvageable.
I would buy a set of AFR 195's because of the lightweight valve train components and beehive springs. They will allow about 500 more RPM before valve float with all else being the same. Hate to see you get it all back together and do the same thing. Check the cam lobe and lifter bottom while you have it apart. It looks like the valve just kissed the piston top. I bet the bottom end is fine. Your lucky. I did this before and nothing below the intake was salvageable.
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
I know they are high but the lightweight valvetrain package and extra horsepower is worth a lot. If it happens again you might not be so lucky. Put a rev limiter on it with a 6000 RPM chip if you go with the Edlebrock heads. 
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 3,323
Likes: 142
From: Green Valley Arizona
The E-Street (5073) heads have a max of 5500rpm which is also where my cam maxes-out. This engine is not a thunder maching by any means.....just a mild rebuild.
Again the AFR 195 would be really nice.....expensive, but nice. Would also be about 25% of the car's value. I have to decide how much I am willing to spend on this car. And just to add to this discussion....wife says sell it now for $2500 and get rid of it.
Again the AFR 195 would be really nice.....expensive, but nice. Would also be about 25% of the car's value. I have to decide how much I am willing to spend on this car. And just to add to this discussion....wife says sell it now for $2500 and get rid of it.
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