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Reducing compression

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Old Mar 10, 2016 | 06:40 AM
  #1  
Willyr33's Avatar
Willyr33
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Reducing compression

Hi
I'm wondering if anyone here has reduced the compression ratio on their VQ37 by the use of thicker head gaskets?
And if so what compression did you achieve with what thickness of gasket?
I'm about to install a GTM/Gamma TT kit and would like to drop the compression to keep it a bit more reliable under boost.
If I can't achieve that to some degree I'll most likely put in a water methanol kit to keep Charge temps down
Any ideas?
Cheers
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Old Mar 10, 2016 | 06:51 AM
  #2  
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Originally Posted by Willyr33
Hi
I'm wondering if anyone here has reduced the compression ratio on their VQ37 by the use of thicker head gaskets?
And if so what compression did you achieve with what thickness of gasket?
I'm about to install a GTM/Gamma TT kit and would like to drop the compression to keep it a bit more reliable under boost.
If I can't achieve that to some degree I'll most likely put in a water methanol kit to keep Charge temps down
Any ideas?
Cheers
There's an important announcement regarding GTM from our mods. Good luck with the install.
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Old Mar 10, 2016 | 06:54 AM
  #3  
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Explain??
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Old Mar 10, 2016 | 07:09 PM
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Don’t Buy From GTM/Gamma
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I think he's referring to this...

DONT BUY FROM GTM/GAMMA
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Old Mar 14, 2016 | 06:15 AM
  #5  
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So no one here can help out with about reducing the compression on their G?
Where's all the guru's? I don't want to pull the motor out and put in low comp pistons
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Old Mar 14, 2016 | 10:36 AM
  #6  
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Originally Posted by Willyr33
So no one here can help out with about reducing the compression on their G?
Where's all the guru's? I don't want to pull the motor out and put in low comp pistons
Through all my reading of the forums I have not seen anyone lower the compression by using a thicker head gasket. If you don't want to spend the money to buy low compression pistons that is just a risk you are going to have to take.
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Old Mar 14, 2016 | 04:27 PM
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I want to say the head gasket will give only about a quarter-point reduction. Point me to engine specs and the difference in gasket thickness and calculating the reduction would be fairly trivial.
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Old Mar 15, 2016 | 01:06 AM
  #8  
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the OP already took a huge risk by going with GTM products, how much worse can the risk get by using thicker gaskets. id say go for it.
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Old Mar 15, 2016 | 11:39 AM
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Might want to search/post this question on the 370Z board. I'm sure someone has experience with this over there.
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