Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

Motor Build Time... Compression questions.

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Old Jun 11, 2005 | 07:59 PM
  #1  
ZedEx's Avatar
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Default Motor Build Time... Compression questions.

1994 Civic EX D16Z6

Well I'm prepping my motor for the GReddy TD04H-15G kit I'm purchasing in the near future.

And it just so happens that I have some Brand New in the box D16A6 pistons and rings... However, I am aware that these pistons will bring my compression ratio up to 10.4:1 in my Z6, with the Z6 rods... But I am wondering what the compression will be IF I get the A6 rods as well, will this keep the D16A6's compression?

The A6's compression ratio isn't that far off the Z6's, is it?

Thanks in advance,

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Old Jun 11, 2005 | 08:18 PM
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Default Re: Motor Build Time... Compression questions. (ZedEx)

the rods are the same. its the head volume that makes it difference
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Old Jun 11, 2005 | 08:25 PM
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EK k kay's Avatar
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Default Re: Motor Build Time... Compression questions. (civictildeath)

Yeah the rods don't have anything to do with the compression. I don't know if I'd want to turbo the z6 block with that high of a comp ratio.
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Old Jun 11, 2005 | 08:29 PM
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... You're not supposed to have a Forced Induction set-up with high compression on ANY block. **** starts blowing up, haha

So is there no way to work these A6 pistons and rings in?
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Old Jun 11, 2005 | 10:17 PM
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Default Re: (ZedEx)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ZedEx &raquo;</TD></TR><TR><TD CLASS="quote">... You're not supposed to have a Forced Induction set-up with high compression on ANY block. **** starts blowing up, haha
</TD></TR></TABLE>

Negative

There are more than a few people with JDM R motors, stock bottom ends and turbo running just fine with tuning and cooling mods.

All of the record setting jg turbo b's I saw built all had 11.7:1 or so.

Turbo lag also decreases considerbly with higher compression.

Also look at all of the turbo and super charged s2000's
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Old Jun 11, 2005 | 10:24 PM
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Default Re: (ZedEx)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ZedEx &raquo;</TD></TR><TR><TD CLASS="quote">... You're not supposed to have a Forced Induction set-up with high compression on ANY block. **** starts blowing up, haha

</TD></TR></TABLE>

Wow you need to look up Tony the tiger then try to come back here and say that again. 12.x:1 ITB GSR Turbo (15psi (?)) Its all on tuning.

You could use the A6 pistons no prob since there brand spanking new. If they were used i wouldnt use them because of age. Those pistons are more for All motor because they have a more flat head.
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Old Jun 12, 2005 | 09:49 AM
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Sorry guys, I'm a Nissan guy, I'm used to seeing Turbocharging Compression Ratio at exactly 8.5:1... I'm still learning this Honda thing, thanks for bearing with me

So it IS possible to use the A6 pistons with the GReddy TD04H-15G Turbocharger system? Anyone else think this is plausible?
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Old Jun 12, 2005 | 09:54 AM
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Default Re: (ZedEx)

Check out this website:

http://www.zealautoworks.com/dseries.html

It lets you mix and match different d-series parts and will let you calculate the final compression ratio. Might help you out.

B96v6
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Old Jun 12, 2005 | 09:58 AM
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Default Re: Motor Build Time... Compression questions. (chowmien)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chowmien &raquo;</TD></TR><TR><TD CLASS="quote">Yeah the rods don't have anything to do with the compression.</TD></TR></TABLE>

Wrong. Rods can change compression ratio much easier than you think. Changing the length of a rod changes the position at which the piston sits in the cylinder. Increasing rod length will bring the piston closer to the head thus decreasing deck height and increasing compression ratio.
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Old Jun 12, 2005 | 10:21 AM
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Default Re: Motor Build Time... Compression questions. (JDM-97CX)

yea turbo and high compression just means you need a grest tuner to set it up
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Old Jun 12, 2005 | 02:37 PM
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http://www.zealautoworks.com does nothing more than crowd my monitor with about 30-40 pop ups at one time...

Is there another site that may help me?
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