TwinTurbo.NET: Nissan 300ZX forum - I replaced the RobZ with Polar
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Subject I replaced the RobZ with Polar
     
Posted by komplexZTT on August 06, 2025 at 9:12 AM
  This message has been viewed 49 times.
     
In Reply To Polar Eng. 62mm TB’s posted by Mike@ZSpeed on August 03, 2025 at 04:27 PM
     
Message Their fit and finish are much better, but my experience was it took a long time to deliver (ordered Sept 23' received July 24'). Similar when I got the fuel pump holder.

They come with o-rings to seal, but since I did a sloppy job boring out my plenum for robZ, some spots would exceed oring placement, I bought CZP TB gaskets to use instead.

Mine do stick a little at the closed position when first step on throttle, but maybe I need to adjust open a little more at full close.

Since replacing, my idle and drivabilty have been much improved.

2+2=4; 2+0=2; 4>2 : 2+2 > 2+0.

     
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