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lowering compression question

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hondalowlow
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lowering compression question

Post by hondalowlow » July 02, 2005

i just picked up a d16y8 the head is fully built and i tore the bottom end apart tonight.
everyhting is brand new. pistons and all but the rod bearing is shot in #1 cyl. anywho

im going to run a t-25 turbo on it with about 6 - 8 psi max how can i lower the compression with out getting new pistons.

the 96-00 HG are 3 layer steel headgaskets
someone once said to double them and it will drop it 8-5-1
but anrt y7-y8's 9-5-1

please fill me in and if you know if any write ups on compressions please pos them. thanks
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kotomile
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Post by kotomile » July 02, 2005

Just leave the Cr as is if you're only going to run 6-8 lbs.
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tenchu
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Post by tenchu » July 02, 2005

Yeah, you'll make more power with higher compression, the only reason you lower the compression is to run higher boost, You could run 10lbs on stock compression.
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hondalowlow
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Post by hondalowlow » July 03, 2005

tenchu wrote:Yeah, you'll make more power with higher compression, the only reason you lower the compression is to run higher boost, You could run 10lbs on stock compression.

thank both of you guys for the info. i was just worried about blowing a HG or melting the pistons.
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kotomile
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Post by kotomile » July 03, 2005

hondalowlow wrote:
tenchu wrote:Yeah, you'll make more power with higher compression, the only reason you lower the compression is to run higher boost, You could run 10lbs on stock compression.

thank both of you guys for the info. i was just worried about blowing a HG or melting the pistons.
It would be difficult to do either at 6-8 lbs.
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tenchu
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Post by tenchu » July 04, 2005

kotomile wrote:
hondalowlow wrote:
tenchu wrote:Yeah, you'll make more power with higher compression, the only reason you lower the compression is to run higher boost, You could run 10lbs on stock compression.

thank both of you guys for the info. i was just worried about blowing a HG or melting the pistons.
It would be difficult to do either at 6-8 lbs.
Agree'd, a local shop's 'beater car' is a turbo D16 civic that runs 10lbs daily on a completely non-built engine, not so much as a gasket replaced. And he runs a 35 shot on top of the boost.
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