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JDM D15b Vtec and boost.

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Old 01-14-2005, 01:28 PM
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Default JDM D15b Vtec and boost.
Anyone know the compression of the D15b Vtec ? It't basically a D16z6, right ? So it should take the boost pretty well? Does it have decent sized rods ? Use the P28 ECU for this right ? Trying to decide to get a d16z6 or the D15b. I'm thinking mroe towards the D15b due to the fact that it has lower miles on it, that is if i actaully get one with the 40k miles that they claim they have.
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Old 01-14-2005, 10:00 PM
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Default Re:JDM D15b Vtec and boost.
D15B comp. ratio is 9.3:1 Use a P28 chipped. The rods are pencil sized like most D15's, just don't hit it to hard and it will be fine.

D.
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Old 01-14-2005, 11:32 PM
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Default Re:JDM D15b Vtec and boost.
stay under 10psi-and it better be well tunned.
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Old 01-15-2005, 01:23 AM
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Default Re:JDM D15b Vtec and boost.
So, id be better off with a d16z6 ?
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Old 01-15-2005, 01:25 AM
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Default Re:JDM D15b Vtec and boost.
d15b's love boost, and they're cheaper and less miles than any z6 you'll find
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Old 01-15-2005, 01:35 AM
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Default Re:JDM D15b Vtec and boost.
Originally Posted by Masta
D15B comp. ratio is 9.3:1 Use a P28 chipped. The rods are pencil sized like most D15's, just don't hit it to hard and it will be fine.

D.
they are thicker than d15s and have a larger big end, they are similar to z6 rods. but i wont fuel that arguement anymore than it already is even though i have the pics and measurements to prove it
 
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Old 01-15-2005, 06:15 AM
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Default Re:JDM D15b Vtec and boost.
And stock Z6 rods are pencil like too. We all know d-rods are weak, no matter what motor. Keep it under 10psi, tune it well and happy boosting.
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Old 01-15-2005, 08:19 AM
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Default Re:JDM D15b Vtec and boost.
I think the most i'll run is 7 psi on a 14b. So i should be okay. I'll get a wideband and just read up on the Uberdata forum and see what kinda tune that gets me.
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Old 01-15-2005, 08:23 AM
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Default Re:JDM D15b Vtec and boost.
Originally Posted by fsufan814
Originally Posted by Masta
D15B comp. ratio is 9.3:1 Use a P28 chipped. The rods are pencil sized like most D15's, just don't hit it to hard and it will be fine.

D.
they are thicker than d15s and have a larger big end, they are similar to z6 rods. but i wont fuel that arguement anymore than it already is even though i have the pics and measurements to prove it
Can you post the pics? I'm interested
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Old 01-15-2005, 12:12 PM
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Default Re:JDM D15b Vtec and boost.
i thought it was 9.6:1?
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