Valve Seating?
Thread Starter
Instructor
Joined: Jun 2006
Posts: 172
Likes: 0
From: Seattle WA
Valve Seating?
After putting my heads back together after replacing bent valves, I am just finding out that I may have to take the head to a machine shop to get the valves seated/lapped? Is this true?
The intake valves are the identical part, the exhaust valves are the same size, but may not be the identical part. Is there any case when seating at a machine shop would not be necessary?
I feel quite frustrated that I did not even hear of this in all of the research I've done over the past months. Even searches now on the forum do not return any information regarding this....
The intake valves are the identical part, the exhaust valves are the same size, but may not be the identical part. Is there any case when seating at a machine shop would not be necessary?
I feel quite frustrated that I did not even hear of this in all of the research I've done over the past months. Even searches now on the forum do not return any information regarding this....
Le Mans Master
Joined: Nov 2008
Posts: 5,691
Likes: 12
From: columbus oh
After putting my heads back together after replacing bent valves, I am just finding out that I may have to take the head to a machine shop to get the valves seated/lapped? Is this true?
The intake valves are the identical part, the exhaust valves are the same size, but may not be the identical part. Is there any case when seating at a machine shop would not be necessary?
I feel quite frustrated that I did not even hear of this in all of the research I've done over the past months. Even searches now on the forum do not return any information regarding this....
The intake valves are the identical part, the exhaust valves are the same size, but may not be the identical part. Is there any case when seating at a machine shop would not be necessary?
I feel quite frustrated that I did not even hear of this in all of the research I've done over the past months. Even searches now on the forum do not return any information regarding this....
Thread Starter
Instructor
Joined: Jun 2006
Posts: 172
Likes: 0
From: Seattle WA
Ugh, so a machine shop is going to be required... Some have suggested that I would be able to do the lapping myself on the cheap, but with prior bent valves it seems that there are other things that will need to be checked...
Anyone have any idea what this could end up costing?
Anyone have any idea what this could end up costing?
Pro
Joined: Jul 2006
Posts: 608
Likes: 1
From: LZ IL
Quick test would be for you to get some lapping compound and try to do yourself. If you find a lot of uneven lapping marks, you have no choice but to have the heads worked on. Price could be all over the place if seats or guides need work.
Le Mans Master
Joined: Nov 2008
Posts: 5,691
Likes: 12
From: columbus oh
Ugh, so a machine shop is going to be required... Some have suggested that I would be able to do the lapping myself on the cheap, but with prior bent valves it seems that there are other things that will need to be checked...
Anyone have any idea what this could end up costing?
Anyone have any idea what this could end up costing?
Safety Car
Joined: Jan 2008
Posts: 4,711
Likes: 3
From: Middle of No where AK
My guess would be a few hundred bucks. Every thing that holds the valve needs to be inspected to make sure it didnt warp out of tolerance. Youre better off leaving this job to a professional.
Le Mans Master
Joined: Jul 2005
Posts: 5,328
Likes: 405
After putting my heads back together after replacing bent valves, I am just finding out that I may have to take the head to a machine shop to get the valves seated/lapped? Is this true?
The intake valves are the identical part, the exhaust valves are the same size, but may not be the identical part. Is there any case when seating at a machine shop would not be necessary?
I feel quite frustrated that I did not even hear of this in all of the research I've done over the past months. Even searches now on the forum do not return any information regarding this....
The intake valves are the identical part, the exhaust valves are the same size, but may not be the identical part. Is there any case when seating at a machine shop would not be necessary?
I feel quite frustrated that I did not even hear of this in all of the research I've done over the past months. Even searches now on the forum do not return any information regarding this....
http://forums.corvetteforum.com/c6-t...-pictures.html
Go to the last post...
Look at the bright side, at least you haven't put them on yet.
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Thread Starter
Instructor
Joined: Jun 2006
Posts: 172
Likes: 0
From: Seattle WA
Hmm, I may not have revisited that thread after your post. Wish I had.
Searching on the forum is somewhat hit or miss. Should have searched for lap vs lapping? Thanks for the help anyhow.
Searching on the forum is somewhat hit or miss. Should have searched for lap vs lapping? Thanks for the help anyhow.