Subject	I replaced the RobZ with Polar
Posted by	komplexZTT on August 06, 2025 at 9:12 AM
	This message has been viewed 313 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.
Follow Ups	Polar Eng. 62mm TB’s - Mike@ZSpeed 16:27:11 08/03/25 better question: does anyone have Polar Engineering products (n/m) - vorpalZed 22:34:15 08/03/25 ...yea, been hearing that he's flaking out. Tread carefully - Woodnutz (PA) 11:53:48 08/04/25 Ash 2.0 in the making (n/m) - Zeus 12:14:10 08/04/25 Re: Polar Eng. 62mm TB’s - RHD NOVA 13:08:24 08/04/25 2nd. Quality is great, but he is a 1 man show. (n/m) - ctheobal 20:58:19 08/04/25 This is all positive - Mike@ZSpeed 21:47:24 08/04/25 Re: This is all positive - KeninAZ 14:44:03 08/05/25 the shaft for the TPS is too small on some of the RobZ units - vorpalZed 17:38:41 08/05/25 <~~ 2 new RobZ 62mm TB’s in box. Message me - Mike@ZSpeed 10:18:35 08/06/25 Can also create a simple shim for those units affected. (n/m) - Ghoztt (MD) 13:14:15 08/06/25 Ahh gotcha....from polar's website... - KeninAZ 13:45:45 08/11/25 I replaced the RobZ with Polar - komplexZTT 09:12:09 08/06/25 I've got some for sale :) (n/m) - Kick'n 18:20:41 08/06/25 I have RobZ TBs brand new in the box if anyone wants it. (n/m) - ZHOUND 13:50:23 08/11/25
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