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Jorge
Level 3 User
Joined: 14 Aug 2006
Posts: 64
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| Posted:
Tue Aug 15, 2006 12:41 pm |
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Right, this happened to me 2-3 months ago.
Before I went to the anual inspection, I had a splitted alternator belt beneath the distribution one, which broke, at a speed of 100 Km/h (65mph). Instead of replacing the 3 or 4 knackered valves, I replaced the all set.
Now, before we (me and my mechanic) prime the valves on their seats and install them, we cleaned with sand paper on a driller, all the holes to the mixture in the head/body, ant then took it to the anual inspection.
The results (not much noticeable in the power) were an astonishing (never had less than 0,4 %) value of 0,05 %, with a knackered cat !!!
Since that cleaning, she's running beautifully and I'm the happiest man ever 
Therefore, I recomend if somehow one must remove the head, cleaning thoroughly is a MUST. Worked for my E7J-746, don't know about other engines |
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Chris H
Forum Moderator
Joined: 02 Mar 2004
Posts: 19978
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| Posted:
Tue Aug 15, 2006 5:18 pm |
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they rspond well to headwork, especially the early straight port heads.
Although I managed a gain of 13bhp on meddy clios later curly port 1.4 head. |
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