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***Topgunz ROTREX C38R Supercharger Kit***

Originally Posted by Optimiser Can you prove/validate your 15psi? Pulleys, SC rpm, SC trim, SC bearing upgrade, accuracey of boost gauge, etc? How do you know people making less than

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Old 04-14-2021, 02:27 AM   #1 (permalink)
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Can you prove/validate your 15psi? Pulleys, SC rpm, SC trim, SC bearing upgrade, accuracey of boost gauge, etc? How do you know people making less than 15psi is due to belt slip? How did you figure out and know "proper belt tension"?
Sure do. I can grab datalogs from my laptop tomorrow if you are still interested (rather do this via PM's though, just remind me). The big thing was swapping the supercharger to the RPM belt, the "normal" one is a constant losing battle between trying to tension it just for it to stretch and be loose again. Not one problem since.
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Old 04-14-2021, 07:33 AM   #2 (permalink)
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To be fair the old kit is easily possible to hit 15psi with that tiny filter, seems most people can't figure out proper belt tension to save their lives. I was at 15psi with a fresh filter, now after a year of almost daily driving the car without cleaning the filter it's only down to 14psi.

Anyways, the new kit looks amazing, good job. Love seeing the constant progress being made with this platform.
I wouldnt say "easily possible" since I have never seen anyone make 15psi with it. Not saying you didnt but there have been many of these kits sold and I have never seen one make any decent power with that filter on.

What is considered almost daily driving? 10,000 miles? That means every year you have to remove the entire supercharger and reinstall it to clean your filter. Also, I see that filter gets completely smashed from engine movement. Even after cleaning it I am pretty sure it will not bring in the same psi as it did when it was new. It physically loses surface area, something it cant afford.

Plus just the fact that knowing every time you drive your car it is losing psi/power is kind of strange.

I know I am calling the kettle black here since this was my design and I appreciate the feedback to help the community understand facts. (unlike facebook)

In your below comment you have stated you had to modify the kit in order to gain boost. When I say 12 psi that is because that is what the competition sends out to the customer. Yes its possible to modify it to make more boost. You could have done this by overdriving the head unit even further also.

The point is "here is what you get when you order a Rotrex kit Vs. here is what you get if you order the competitor kit". Nothing needs to be done to the Rotrex kit at all in order to make more power than most people know what to do with instead of constantly modifying and trying to figure out how to make these Vortech kits make more power.


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Originally Posted by DrBacon View Post
Sure do. I can grab datalogs from my laptop tomorrow if you are still interested (rather do this via PM's though, just remind me). The big thing was swapping the supercharger to the RPM belt, the "normal" one is a constant losing battle between trying to tension it just for it to stretch and be loose again. Not one problem since.
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Old 04-14-2021, 10:22 PM   #3 (permalink)
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I wouldnt say "easily possible" since I have never seen anyone make 15psi with it. Not saying you didnt but there have been many of these kits sold and I have never seen one make any decent power with that filter on.

What is considered almost daily driving? 10,000 miles? That means every year you have to remove the entire supercharger and reinstall it to clean your filter. Also, I see that filter gets completely smashed from engine movement. Even after cleaning it I am pretty sure it will not bring in the same psi as it did when it was new. It physically loses surface area, something it cant afford.

Plus just the fact that knowing every time you drive your car it is losing psi/power is kind of strange.

I know I am calling the kettle black here since this was my design and I appreciate the feedback to help the community understand facts. (unlike facebook)

In your below comment you have stated you had to modify the kit in order to gain boost. When I say 12 psi that is because that is what the competition sends out to the customer. Yes its possible to modify it to make more boost. You could have done this by overdriving the head unit even further also.

The point is "here is what you get when you order a Rotrex kit Vs. here is what you get if you order the competitor kit". Nothing needs to be done to the Rotrex kit at all in order to make more power than most people know what to do with instead of constantly modifying and trying to figure out how to make these Vortech kits make more power.
Don't get me wrong, I am in no way trying to diminish the new kits capabilities. I know it will be superior to the previous kit(s) in virtually every way. I despise that stupid filter, I have offered several shops good money to come up with a custom solution to it and none of them even wanted to try.
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