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marck_c
 Post subject: Re: 4G61t WHP record-
PostPosted: Mon Feb 21, 2011 11:17 am 
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Joined: Mon Jun 04, 2007 3:21 pm
Posts: 115
Location: kingston, jamaica
Hey guys, good news. For those of you wanting to source forged pistons for the 4G61, CP Pistons makes a forged 9:1 compression piston for the 2.2 liter 94mm crank DSM. This can fit into a bored out 4G61 block, and not protrude from the deck. You end up with a 1.7 liter 4G61. The CP Part number is SC7212.

I had mine ceramic coated.

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cbgsr
 Post subject: Re: 4G61t WHP record-
PostPosted: Sat Apr 30, 2011 4:20 am 
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Joined: Mon Apr 04, 2011 12:39 am
Posts: 18
Location: Brisbane Australia
in reply to these pistons ive being doing some maths and with what i can find these would be

based on
75mm stroke
86mm bore
-13.2 cc piston dish
43cc combustion chamber
1.3mm headgasket

the calculator i used came up with 7.8-1 comp ratio?
sorry for bringing up an old thread i would just like some confirmation i have done this correctly thanks
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