03-26-2010, 12:31 AM
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#5 (permalink)
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A True Z Fanatic
Join Date: Jul 2009
Location: Roseville, CA
Posts: 2,359
Drives: 09 370Z Tour + Sport
Rep Power: 22
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Quote:
Originally Posted by Josh@STILLEN
The plenum spacer corrected an issue with the upper manifold design on the early VQ's.. the front cylinders suffered from starvation due to the original design, a plenum spacer would correct that, and offer some decent gains.
This design element has not been present for current motors, including the 370Z, so you won't see the need.
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True statement, the starvation of cylinders 1 & 2 with the 03-05 models was the same issue with the 06 model which came with a reshaped lower plenum. Motordynes upper and lower plenum kit included a swapped out original lower plenum with a reshaped 03-05 Z33 lower plenum.
I could not believe the Z34's upper plenum is plastic. Reminds me of something Skunk or Kinetix would mfg and those were known to crack. Fingers crossed for a tight seal and cold air.
Last edited by ZForce; 03-26-2010 at 12:41 AM.
Reason: added Skunk plenum spacer
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