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Cleaning engine valves?


 
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Mr Farmall
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PostPosted: Mon Apr 08, 2013 7:41 pm    Post subject: Cleaning engine valves? Reply to specific post Reply with quote

With the weather being nice today I pulled the head of my A to disassemble and take to the machine shop since I keep having head gasket sealing problems. After taking the valves off I see they have alot of carbon build up and would like to clean them, if I should while they are out. The motor had good compression before I pulled the head so I know the valves are still sealing well. In fact it looks like thy may have been lapped or ground since one cylinder had different color keepers.
 
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El Toro
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PostPosted: Tue Apr 09, 2013 3:06 am    Post subject: Re: Cleaning engine valves? Reply to specific post Reply with quote

Your local auto machine shop probably has a set fee for grinding the valves and seats. I also would have the cyinder head checked for flatness as it may need milled and check for cracks. Hal
 
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D beatty
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PostPosted: Tue Apr 09, 2013 3:58 am    Post subject: Re: Cleaning engine valves? Reply to specific post Reply with quote

If the valves are seating good I have used a rotatory wire brush to clean carbon if its not real bad.
 
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David G
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PostPosted: Tue Apr 09, 2013 4:34 am    Post subject: Re: Cleaning engine valves? Reply to specific post Reply with quote

I always used a bench grinder with a wire wheel.
 
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rustred
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PostPosted: Tue Apr 09, 2013 5:48 am    Post subject: Re: Cleaning engine valves? Reply to specific post Reply with quote

the machine shop will disassemble throw valves and head in the "gunk" to soak before working on it. its a standard procedure. don't forget to take the valves with you as the machinist will give you the update on valves and seats and guides.
 
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Super H Mike
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PostPosted: Tue Apr 09, 2013 6:03 am    Post subject: Re: Cleaning engine valves? Reply to specific post Reply with quote

Thats what I do as well.
 
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El Toro
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PostPosted: Tue Apr 09, 2013 7:37 am    Post subject: Re: Cleaning engine valves? Reply to specific post Reply with quote

They will also look at the thickness of each valve and if are near 1/32" in thickness they will replace them. Hal
 
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