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Old 08-23-2009, 10:59 PM   #1
changchewsoon
 
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i suppose you were referring to the compression ratio for the pistons?

they are 9.0 pistons.
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Old 09-26-2009, 03:31 PM   #2
changchewsoon
 
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Garrett GT2554R
They arrived a couple of days ago.









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454 whp, 1.7 bar boost, pump gas, water/meth.
501 whp, 2.2 bar boost, pump gas + avgas, no water/meth.
www.viosturbo.com - World's first 500 WHP 1NZ-FE
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Old 09-27-2009, 08:05 AM   #3
Giupo
 
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Quote:
Originally Posted by changchewsoon View Post
i suppose you were referring to the compression ratio for the pistons?

they are 9.0 pistons.
Are you sure that your Cp pistons are 9.0:1 compression ratio???
Because my Cp pistons 9.0:1 compression ratio are more different.

This is my pistons:

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Old 09-28-2009, 01:03 AM   #4
changchewsoon
 
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Quote:
Originally Posted by Giupo View Post
Are you sure that your Cp pistons are 9.0:1 compression ratio???
Because my Cp pistons 9.0:1 compression ratio are more different.

This is my pistons:

Hi Giupo, yes I'm pretty sure they are 9.0 compression pistons as per stated in the invoice from CP. Well, unless CP is stating it as 9.0 compression and giving me something otherwise????

I noticed your pistons are deep dish design whereby mine is flat top design. Wonder what differences are they going to make?

By the way, I got my pistons skirt coated as well for 20 bucks extra.
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454 whp, 1.7 bar boost, pump gas, water/meth.
501 whp, 2.2 bar boost, pump gas + avgas, no water/meth.
www.viosturbo.com - World's first 500 WHP 1NZ-FE
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Old 09-28-2009, 06:33 AM   #5
Giupo
 
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Originally Posted by changchewsoon View Post
Hi Giupo, yes I'm pretty sure they are 9.0 compression pistons as per stated in the invoice from CP. Well, unless CP is stating it as 9.0 compression and giving me something otherwise????

I noticed your pistons are deep dish design whereby mine is flat top design. Wonder what differences are they going to make?

By the way, I got my pistons skirt coated as well for 20 bucks extra.
A dep dish desingn is a low compression ..have you pistons specification?

more picture :
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Old 09-28-2009, 07:32 AM   #6
changchewsoon
 
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My pistons are with my tuner now, I'll stop by to get the specification sheet from him tomorrow if possible.

This is what was printed in the invoice when I bought the pistons:

MEMO: DUP XTP-539P755 EXCEPT 9:1
CB-810C-4: CP CUST IMP 4-VR F/T#
CB-PF: PIN FIT PISTON
CB-708225015C1C: 4130 PIN:708x2.250x150/18MM-CHAMF
CB-SKIRTCOAT: TEFLON SKIRT COATING
CB-N2972: XC/GN RING SET:75.50mm/1-CYL
CR-B93725B-4: CRWR BILLET ROD:TOYOTA/SCION 1NZ-FE

I guess the F/T means the flat top design for the pistons?
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454 whp, 1.7 bar boost, pump gas, water/meth.
501 whp, 2.2 bar boost, pump gas + avgas, no water/meth.
www.viosturbo.com - World's first 500 WHP 1NZ-FE
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