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Compression with CTR pistons?

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Old Apr 18, 2004 | 08:04 AM
  #1  
douglas_be's Avatar
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From: BELGIUM , Koksyde, wvl, belgium
Default Help wanted , making 245 HP on ITR engine with CTR pistons

Here is my setup:

ITR block
CTR pistons
STD headgasket
Stock ITR head
70mm throttle body
P&P ITR intake manifold
DTR header
2.5 exhaust
Skunk2 stage II cams
Endyn cam gears
Apexi VAFC
Mugen ECU
MSD Digital 6 + HVC coil
FPR

What CR will I be running with this setup, std deck height, no milling on block nor head.

Will a std Honda headgasket seal this power?
When used in a 4 hour roadrace, always reving it between 6000-8600 rpm.
I did install a brand new Honda radiator and thermostat.

Anyone has experience with a similar setup?

I WAS AMAZED WITH THE 245 DIN HP (FLYWHEEL HORSEPOWER) for a 1.8L
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Old Apr 18, 2004 | 09:48 AM
  #2  
Pondus's Avatar
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From: Molde, Norway
Default Re: Help wanted , making 245 HP on ITR engine with CTR pistons (douglas_be)

CR will be close to 12,5:1 if this is standard size pistons, a little higher (12,65~) if it's 81,25mm. Stock headgasket should be fine.
What about headbolts, stock or ARP studs?
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Old Apr 18, 2004 | 12:35 PM
  #3  
Type-Rare#1248's Avatar
 
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From: Vancouver, BC, Canada
Default Re: Help wanted , making 245 HP on ITR engine with CTR pistons (99ITR#3715)

thats some pretty good power

i will be dropping in some CTR pistons this summer as well...hope i get some similar results.
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Old Apr 18, 2004 | 12:41 PM
  #4  
Hybrid ctr's Avatar
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Default Re: Help wanted , making 245 HP on ITR engine with CTR pistons (Type-Rare#1248)

Around 12.5:1 CR

An OEM headgasket will be fine.
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Old Apr 18, 2004 | 09:41 PM
  #5  
douglas_be's Avatar
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From: BELGIUM , Koksyde, wvl, belgium
Default Re: Help wanted , making 245 HP on ITR engine with CTR pistons (Hybrid ctr)

12.5 OH! , on C-speedracing it says 11.7 ??
Now I am using the ITR headstuds , I read that these were already upgraded compared to the GSR ??
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Old Apr 18, 2004 | 10:05 PM
  #6  
RTW DC2R's Avatar
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From: Hollywood Babylon
Default

make sure you get the over bored pistons, or you may run into oil ring issues like Im having.

Ryan, who wishes his "builder" told him that beforehand.
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Old Apr 18, 2004 | 11:43 PM
  #7  
Type-Rare#1248's Avatar
 
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From: Vancouver, BC, Canada
Default Re: (RTW DC2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2 &raquo;</TD></TR><TR><TD CLASS="quote">make sure you get the over bored pistons, or you may run into oil ring issues like Im having.

Ryan, who wishes his "builder" told him that beforehand. </TD></TR></TABLE>

by "over bore," do you mean the 81.25 mm ones?
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Old Apr 19, 2004 | 05:36 AM
  #8  
douglas_be's Avatar
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From: BELGIUM , Koksyde, wvl, belgium
Default Re: (RTW DC2)

Hi,
Thanks for the reply , please let me know what happened ?

Thanks

Douglas
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Old Apr 19, 2004 | 05:39 AM
  #9  
Stinkycheezmonky's Avatar
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From: Burninating the peasants yo
Default Re: (Type-Rare#1248)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Type-Rare#1248 &raquo;</TD></TR><TR><TD CLASS="quote">

by "over bore," do you mean the 81.25 mm ones?</TD></TR></TABLE>
Yep, and the overbore rings to match.
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