focijohn
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| posted on 5/2/09 at 04:25 PM |
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Pitted exhaust valves (zetec)
Started lapping in my vlaves today and doing the exhaust valves after round one on the first exhaust valve its reasonably well pitted. So's the
second and the third.
Is it worth replacing these or just give them a bit more?
I would try and get a piture but my dads camera has more settings than the space shuttle.
Cheers
John
Anyone going slower than you is an idiot. Anyone going faster than you is a maniac.
Too many targets but too few bullets.
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ashg
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| posted on 5/2/09 at 05:15 PM |
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if its hydrolic just keep going. if you have shims dont go to far or you will have to reshim the tappets
Anything With Tits or Wheels Will cost you MONEY!!
Haynes Roadster (Finished)
Exocet (Finished & Sold)
New Project (Started)
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focijohn
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| posted on 5/2/09 at 05:50 PM |
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yea shes a silvertop
Anyone going slower than you is an idiot. Anyone going faster than you is a maniac.
Too many targets but too few bullets.
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Danozeman
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| posted on 5/2/09 at 05:56 PM |
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MIne were the same keep going. They will disappear with coarse then fine paste.
Dan
Built the purple peril!! Let the modifications begin!!
http://www.eastangliankitcars.co.uk
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MikeRJ
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| posted on 5/2/09 at 06:16 PM |
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Note that simply grinding out the pits will recess the valves, and this reduces low lift flow a surprising amount. If they are bad it's best to
the the seats re-cut and valves reground.
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Schrodinger
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| posted on 5/2/09 at 09:55 PM |
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I had a similar valve seats in an old Zetec head, had the head checked and reseated by a well known engine company, only to find that the head was
cracked between two valves. I would get the head checked out before you go too much further if you havn't already.
Keith
Aviemore
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