Micael
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| posted on 29/11/09 at 07:07 PM |
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Duratec lifters again
I plan to remove the valves on my duratec.
Do I need to adjust the valve clearence after that?
I don't plan to do anything with the valves/seats. I just want to examine them.
It seems to be an expensive job to sort out all the buckets, if i have to adjust them.
Does anyone know how much is safe to skim a duratec head?
Micael Moose Åman
Petrolhead and all around nice guy
"Don't leave the duck there. It's totally irresponsible. Put it on the swing, it'll have much more fun." //Sleep Talkin Man Dec 23
2009
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flak monkey
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| posted on 29/11/09 at 08:04 PM |
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As long as you refit the valves and buckets back in their original positions they will be fine.
Not sure on the max you can skim the head.
Sera
http://www.motosera.com
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snapper
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| posted on 29/11/09 at 08:26 PM |
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Might be worth looking at a thinner (Cometic) gasket unless you want some serious compression.
AND i thought Duratecs needed different pistons to increase compression, could be wrong!
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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flak monkey
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| posted on 29/11/09 at 08:36 PM |
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Skimming the head will increase CR, but I dont know how much is safe, probably not much and for little gain. The std CR is already 10.8:1 and most
high compression pistons will take it to 12.5:1.
Sera
http://www.motosera.com
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Micael
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| posted on 30/11/09 at 06:46 PM |
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Thanks for the replys.
I plan to skim the head only to make certain that the head is dead straight.
I hade enough of warped Zetec heads and blown head gaskets. So i don't want to start out with a blown Duratec head gasket. 
Micael Moose Åman
Petrolhead and all around nice guy
"Don't leave the duck there. It's totally irresponsible. Put it on the swing, it'll have much more fun." //Sleep Talkin Man Dec 23
2009
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