Do I Need To Lap The Valves
Thread Starter
Staging Lane
Joined: Jul 2007
Posts: 84
Likes: 0
From: San Antonio TX
Do I Need To Lap The Valves I am doing a h/c and port and polishing the LS6 heads and upgrading springs to PRC duals, do i need to lap the valves? 
Is there anyway you can go wrong while trying to lap the valves, seems simple enough if i have to do it.
Is there anyway you can go wrong while trying to lap the valves, seems simple enough if i have to do it.
Thread Starter
Staging Lane
Joined: Jul 2007
Posts: 84
Likes: 0
From: San Antonio TX
These are the stock heads which i am going to do a mild P&P on, and not gonig to mess with the valves.
I have removed the valves, but i arranged them in a cardboard box so that i know which valves goes in which cylinder. That way the valves will stay in there original positions.
I have removed the valves, but i arranged them in a cardboard box so that i know which valves goes in which cylinder. That way the valves will stay in there original positions.
Thread Starter
Staging Lane
Joined: Jul 2007
Posts: 84
Likes: 0
From: San Antonio TX
Simple enough 
Can i clean the valves uing carb cleaner, wd40 and a scotchbrite pad, or will the scotchbrite micoscopic scratches cause them not to seal properly.
I am trying to clean all of the carbon build up on the engine and heads, which has worked with the above method, and would like to get the valves as well, any tips.
Can i clean the valves uing carb cleaner, wd40 and a scotchbrite pad, or will the scotchbrite micoscopic scratches cause them not to seal properly.
I am trying to clean all of the carbon build up on the engine and heads, which has worked with the above method, and would like to get the valves as well, any tips.
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Simple enough
Can i clean the valves uing carb cleaner, wd40 and a scotchbrite pad, or will the scotchbrite micoscopic scratches cause them not to seal properly.
I am trying to clean all of the carbon build up on the engine and heads, which has worked with the above method, and would like to get the valves as well, any tips.
Can i clean the valves uing carb cleaner, wd40 and a scotchbrite pad, or will the scotchbrite micoscopic scratches cause them not to seal properly.
I am trying to clean all of the carbon build up on the engine and heads, which has worked with the above method, and would like to get the valves as well, any tips.
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Registered User
Joined: Mar 2004
Posts: 199
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From: Austin, Texas
Lapping is easy and a ten minute job. I always do mine when apart with ultra fine (600) to ensure they correctly color. Just make sure you get all of the compound off the head and the valve.
Thread Starter
Staging Lane
Joined: Jul 2007
Posts: 84
Likes: 0
From: San Antonio TX
