Announcing TopgunZ ACE Supercharger Kit!

TopgunZ · 07-26-2021, 07:58 AM

I never sent any RPM belts with the ACE kit. I do however send them with the Rotrex. Turns out the RPM belts actually have a big variance in length over the standard belts, even if they have the same number/length. On the Rotrex kits the RPM belt on the supercharger will have a ton of clearance and can be placed on without even touching a pulley. The regular 10 rib belt needs to be rolled on and is a challenge. Theres like over an inch of difference.

If you run the setup I sent with the ACE kit then the idler should be on the bottom with the K071065.

If your shop changed that and moved the idler to the top then your belt should be the K071045

I am unsure what size your silver pulley is. I am guessing they also changed this and thats why your boost is so low. The ACE kit will consistently make 14-15psi with the setup I send. You should go measure that pulley.

JVerge5363 · 07-26-2021, 04:34 PM

Quote:

Originally Posted by TopgunZ

I never sent any RPM belts with the ACE kit. I do however send them with the Rotrex. Turns out the RPM belts actually have a big variance in length over the standard belts, even if they have the same number/length. On the Rotrex kits the RPM belt on the supercharger will have a ton of clearance and can be placed on without even touching a pulley. The regular 10 rib belt needs to be rolled on and is a challenge. Theres like over an inch of difference.

If you run the setup I sent with the ACE kit then the idler should be on the bottom with the K071065.

If your shop changed that and moved the idler to the top then your belt should be the K071045

I am unsure what size your silver pulley is. I am guessing they also changed this and thats why your boost is so low. The ACE kit will consistently make 14-15psi with the setup I send. You should go measure that pulley.

So I measured across the face of the silver pulley and it appears to be 2.75 in. in diameter. I also noticed that in the install instructions there seems to be a silver pulley as you can see in the pic and in the pic later in the instructions it shows a black pulley. Not sure if you switched pulleys at some point during an upgrade of this kit. I'm wondering if my OEM tensioner pulley needs to be replaced but I also see that Redondoaveb had mentioned that you may have a different tensioner pulley available?

redondoaveb · 07-26-2021, 05:00 PM

Quote:

Originally Posted by JVerge5363

So I measured across the face of the silver pulley and it appears to be 2.75 in. in diameter. I also noticed that in the install instructions there seems to be a silver pulley as you can see in the pic and in the pic later in the instructions it shows a black pulley. Not sure if you switched pulleys at some point during an upgrade of this kit. I'm wondering if my OEM tensioner pulley needs to be replaced but I also see that Redondoaveb had mentioned that you may have a different tensioner pulley available?

Topgunz doesn't have a different tensioner pulley available that I'm aware of. I did mention the OEM tensioner. Not sure if that's where you might have mistaken it as me saying a different tensioner pulley. The silver pulley should be a 2.87", that's the 9lb pulley. 2.75" I believe would be a 10lb (Aaron can verify that). I assume his kit was shipped with the 9lb (2.87).

JVerge5363 · 07-26-2021, 07:35 PM

Quote:

Originally Posted by redondoaveb

Topgunz doesn't have a different tensioner pulley available that I'm aware of. I did mention the OEM tensioner. Not sure if that's where you might have mistaken it as me saying a different tensioner pulley. The silver pulley should be a 2.87", that's the 9lb pulley. 2.75" I believe would be a 10lb (Aaron can verify that). I assume his kit was shipped with the 9lb (2.87).

I just measured the pulley again with a digital micrometer and it is 2.74". I'm beginning to believe that the kit may have come with the wrong pulley. I did order a new Oem tensioner as well.

redondoaveb · 07-26-2021, 08:01 PM

Quote:

Originally Posted by JVerge5363

I just measured the pulley again with a digital micrometer and it is 2.74". I'm beginning to believe that the kit may have come with the wrong pulley. I did order a new Oem tensioner as well.

That's interesting. Maybe they came with the 10lb pulley. What belt # is on there?

redondoaveb · 07-26-2021, 08:08 PM

I would install the correct pulley on there also
https://conceptzperformance.com/stil...13_p_19055.php

JVerge5363 · 07-26-2021, 08:50 PM

Quote:

Originally Posted by redondoaveb

That's interesting. Maybe they came with the 10lb pulley. What belt # is on there?

Not sure what belt is on there now. Couldn't get it to stop in a place that I can see the numbers. I guess I'll find out when I take it off. What I do know is that the idler pulley was in the correct spot, with the correct belt upon the initial installation. When I brought it back in for the first 2500 mile service I was noticing boost loss. At that time, they (RT Tuning) said the belt was slipping and changed out the belt. At that same time, they must have had to move the idler pulley in order to install the new belt. I'm gonna reach out to RT Tuning tomorrow to verify.

JVerge5363 · 07-26-2021, 04:36 PM

Quote:

Originally Posted by TopgunZ

I never sent any RPM belts with the ACE kit. I do however send them with the Rotrex. Turns out the RPM belts actually have a big variance in length over the standard belts, even if they have the same number/length. On the Rotrex kits the RPM belt on the supercharger will have a ton of clearance and can be placed on without even touching a pulley. The regular 10 rib belt needs to be rolled on and is a challenge. Theres like over an inch of difference.

If you run the setup I sent with the ACE kit then the idler should be on the bottom with the K071065.

If your shop changed that and moved the idler to the top then your belt should be the K071045

I am unsure what size your silver pulley is. I am guessing they also changed this and thats why your boost is so low. The ACE kit will consistently make 14-15psi with the setup I send. You should go measure that pulley.

I also plan on getting the K071065 belt and put the idler back to the bottom position.

07-26-2021, 07:58 AM	#1 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6834	I never sent any RPM belts with the ACE kit. I do however send them with the Rotrex. Turns out the RPM belts actually have a big variance in length over the standard belts, even if they have the same number/length. On the Rotrex kits the RPM belt on the supercharger will have a ton of clearance and can be placed on without even touching a pulley. The regular 10 rib belt needs to be rolled on and is a challenge. Theres like over an inch of difference. If you run the setup I sent with the ACE kit then the idler should be on the bottom with the K071065. If your shop changed that and moved the idler to the top then your belt should be the K071045 I am unsure what size your silver pulley is. I am guessing they also changed this and thats why your boost is so low. The ACE kit will consistently make 14-15psi with the setup I send. You should go measure that pulley. __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

07-26-2021, 08:08 PM	#6 (permalink)
redondoaveb A True Z Fanatic Join Date: Apr 2017 Location: So. Commiefornia Posts: 6,379 Drives: 2014 Nismo Gunmetal Rep Power: 2684375	I would install the correct pulley on there also https://conceptzperformance.com/stil...13_p_19055.php __________________ Fast Intentions "Stage Seb" twin turbo #098- Specialty Z/Tial-Xonarotor/CJM/Ecutek/HKS/KW/SPL/Hotchkis/Rohana/Toyo 750whp/700ft.lbs

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