what compressions to expect ?? help

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Old Feb 7, 2008 | 08:21 PM
  #1  
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From: rancho cordova, ca, usa
Default what compressions to expect ?? help

got an obd2 y8 d16 ahhah sorry guys, but yeah a d16 block on a z6 head here. problem is, after not doing my research before buying all this, found out ycp are similar ( if not the same as vitaras ). with a stock oem head gasket they are 8.5;1 .. i got eagle h rods brand new everything and just got them pressed together the other day. now im thinking thats too low for my little turbo???... im running a tdo4h 15g.. 1.9 bars is said to be max boost from greddy, but only about 300 horse power. that means i got to be pushing this thing in pretty high rpms to make ponies. and i got a stock head 7k redline. so what the heck.. hahaha so frustrated bout to put a hammer to that thing. the head was honed .10 of an inch. so what do you think my compressions looking to be.. ?? would it be 8.6;1 ??? stock stroke for the rods also.. what compression should i aim for.. with this little turbo ??? great spool actually. was running it on stock internals for a while. and was getting spooling right around 18-22k but doesnt do soo good top end. just good for droppin into 2nd gear and playin with stangs and maro's.. ahha kinda long sorry guys
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Old Feb 8, 2008 | 03:51 PM
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Default Re: what compressions to expect ?? help (jdmcivicturbo)

some body.. and body..
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Old Feb 8, 2008 | 04:08 PM
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I think youll be fine. Are you getting a tune if not the lower comp will lend you a little safety net. It might take alittle longer to spool but not much. Im really dont know how to calculate your cr but im assuming it hasnt changed drastically. Good luck with the build and have fun
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Old Feb 8, 2008 | 10:00 PM
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Default Re: what compressions to expect ?? help (jdmcivicturbo)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmcivicturbo &raquo;</TD></TR><TR><TD CLASS="quote"> the head was honed .10 of an inch.</TD></TR></TABLE>

you mean it was milled .10? surely you mean .010 right? that would rasie your comp by .3
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Old Feb 10, 2008 | 05:27 PM
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Default Re: what compressions to expect ?? help (blinx9900)

yeah..haha i was thinking "hone" because i was looking to see where i can get my block cleaned up a bit early with some guys .. haha but any ways... .. so blinx9900 would that mean i would be in the ball part range of 8.8 or so ??
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Old Feb 10, 2008 | 06:44 PM
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Default Re: what compressions to expect ?? help (jdmcivicturbo)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmcivicturbo &raquo;</TD></TR><TR><TD CLASS="quote"> so blinx9900 would that mean i would be in the ball part range of 8.8 or so ?? </TD></TR></TABLE>

just about give or take .1 you should be fine thats a good CR. mine is 8.3 and i love it.
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