86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Replacing Valve

Old 09-10-2005, 04:02 PM
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Replacing Valve

Hi everyone, I was wondering if you can replace bad valve with an existing old one that you know is good? I have a bad exhast valve on my number 4 cylinder and I was just wondering if I can put an old one that I have from my other head in its place?
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Old 09-10-2005, 05:42 PM
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it would be a good idea to lap it in or grind the valve and the seat
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Old 09-11-2005, 09:04 AM
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yep, but valves are cheap.
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Old 09-12-2005, 04:42 AM
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The best way is to get a new valve and have a machine shop recut the seat.

.....the el cheapo way is to use a used valve and lap the valve to the seat (does take some time and skill).

Some links on valve lapping:
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