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nismo 46cc heads???

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Old Jul 7, 2004 | 07:37 PM
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rx7/350z
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Default nismo 46cc heads???

does anyone have these installed???
dyno ???
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Old Jul 7, 2004 | 07:55 PM
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These heads are designed for hardcore road race competition. Here's a link to a thread with details and why it's not suitable for street use:

https://my350z.com/forum/showthread....threadid=81277
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Old Jul 8, 2004 | 10:13 AM
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Wouldn't it be possible to run some 8.5:1 or even 8:1 pistons to off set the higher compression of the new heads? How much does it actually change the compression? Seems like a good idea would be to run the lower compression pistons with the Nismo heads and hope for something in the 9:1 - 9.5:1 range. That is if the Nismo heads are even worth it. Like do they flow better than ported stock heads and what not. I don't know, it sounds like a good idea.
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Old Jul 8, 2004 | 01:15 PM
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GOD HILLARY DUFF IS HOT!

aanyway, I am also interested in getting these nismo heads and I too wonder if these flow at all better, does anyone have this information?
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Old Jul 8, 2004 | 01:33 PM
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Originally posted by DrCold
Wouldn't it be possible to run some 8.5:1 or even 8:1 pistons to off set the higher compression of the new heads? How much does it actually change the compression? Seems like a good idea would be to run the lower compression pistons with the Nismo heads and hope for something in the 9:1 - 9.5:1 range. That is if the Nismo heads are even worth it. Like do they flow better than ported stock heads and what not. I don't know, it sounds like a good idea.
Oh yeah, I was thinking along the lines of forced induction too. Thats the reason for the 9:1 ratio.
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