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Sheep on the hood...
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511 Posts
Discussion Starter #1
Which one do I need to lower compression on the 2JZGE?
Is this a good headgasket to run?
Greddy Headgasket- Toyota Supra 2JZGTE - 13511230 2JZ-GTE 2.0mm 88mm (+35)
 

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The Stars At Night
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1,460 Posts
id say you could go for a phr 3mm metal headgasket (~8.7:1 compression ratio - $450)....thats what i am probably gonna go with if i get a supra to go NA-T...if the kit is under 10k, which it better be i was gonna go for the phr stage 2 kit....~500whp
 

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@turbolex.com
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350 Posts
btm7687 said:
id say you could go for a phr 3mm metal headgasket (~8.7:1 compression ratio - $450)....thats what i am probably gonna go with if i get a supra to go NA-T...if the kit is under 10k, which it better be i was gonna go for the phr stage 2 kit....~500whp
...I thought the 3mm dropped compression lower than 8.7:1 even lower than 8.5:1 Can someone confirm the number? How about the 2mm?
 

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565rwhp Turbo Lexus
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727 Posts
*sigh* .. the long-lived debate.

I believe that the 2.0mm gets you right near 8.4:1 ... 3.0mm gets you really low.

I have an extra HKS 1.6mm for sale for quite a long time now ...
 

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265 Posts
motorheaddown's calculations show 3mm working out to 8.3:1 on a GE, this is what i'm using but it's close to 8.5:1 with the VVT-i head.
 
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