zetec turbo compression
#1
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zetec turbo compression
as i dont have the cash to go buying special pistons, to lower the compression on a zetec am i better off fitting a de-compression plate or skimming the pistons a bit?
thanks for any help
Dan
thanks for any help
Dan
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To be honest I dont like either method , decompresion plate means 2 head gaskets and therefore more possible failure areas , and machining pistons removes material from a point where turbo engines suffer anyways ...... if I had a choice it would be decompression plate as the possible failure should not be a catastrophic one , where a piston failure could take the whole engine and debris into turbo aswell , just my thoughts
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To be honest I dont like either method , decompresion plate means 2 head gaskets and therefore more possible failure areas , and machining pistons removes material from a point where turbo engines suffer anyways ...... if I had a choice it would be decompression plate as the possible failure should not be a catastrophic one , where a piston failure could take the whole engine and debris into turbo aswell , just my thoughts
out of interest do you know the std compression of a 2.0 zetec?
#4
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you can stack the MLS std head gaskets - 2 ST170/cougar gaskets will give you 2mm thickness. Mike @ Ferriday is a very clever bloke, i'd listen to him.
Rick.
Rick.
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cheers mate
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i built a buget one .and put a de comp plate on it .compression ratio was 9;1 as i fitted a 1mm de comp plate .only used 1 head gasket .it made 225bhp at 8psi on the rollers .and still running stong
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#8
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gasket failures on Zetecs are almost always down to the finish not being correct on the mating surfaces, they need to be substantially smoother than composite type gaskets, and a lot of machine shops can't replicate the oe finish.
Rick.
Rick.
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thats brill, what spec is the engine? i'm after around that power.
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