***Topgunz ROTREX C38R Supercharger Kit***

kromberg

I currently see the kit on the website. Does that mean is it currently in production? If so what is turn around from order place to it being shipped? With its current configuration( pulley ratio, etc ), what is the expected boost level and rwhp it is expected to produce?

SwedeZ

What is your definition of "in production"? You won't see customers running the kit already. It was literally just announced as you can tell from this thread.

On https://www.topgunspeedworks.com/nis...percharger-kit it says:

"We have many of these components being fabricated but will not be able to assemble and ship kits for 6-10 weeks."

So expect up towards 10 weeks, I guess, before it'll be shipped to you.

My local tuner here in Sweden has just put down an order for me. Really looking forward to it. Been waiting for a Topgun kit since November last year.

TopgunZ

Swedez summed up most of this. I placed a dyno sheet for boost and rwhp on the first page. Basically, you can make anywhere from 400whp to 800whp. It all depends on what you want.

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ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

kromberg

So basically it is a 700+ rwhp kit that is being sold and if you want less rwhp you have to buy a external wastegate, boost controller, and then either manually set the boost level or control it electronic ally with a tune. Looks like EcuTek and not UpRev can do this through a tune.

Realistically this is a $9300+ kit. Base supercharger kit, fuel injectors and connectors, return style fuel system, boost controller, electronic wastegate, EcuTek license & tuning, plus X amount of unanticipated things. Does that sum things up?

TopgunZ

A wastegate comes with it with 5 springs. It's on the listing on the site. You just put whatever psi spring or combo of springs to hit your desires power level. If you want to run on the fly different power levels then an in cabin boost controller is needed or wire into ecutek. But you would still want an afr and boost gauge so you might as well opt for the innovate scb-1 which is those plus boost controller all in one for $320.

It's hard to put a dollar amount on it since everyone wants a different build and fuel required to do that. You can get fic injectors for half the price of ID...etc..

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ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

TopgunZ

TOPGUN SPEEDWORKS ROTREX SC KIT Vs. competition SCs.

www.topgunspeedworks.com

Rotrex: Record breaking 556+wtq and 22+ psi out of the box with a full filter
Competition: V3 requires overspinning and a sand eating turboguard for only 15psi.
Rotrex:Full filter that can be cleaned in 5 minutes.
Compirt and sand ingesting turboguard..or motorcycle filter that restricts psi to 12 and requires the removal of the entire supercharger to clean.
Rotrex: Stock plenum
Competition: Stillen plenum requiring MAF and TB extension harnesses which are extremely problematic and known heatsoak issues
Rotrex: Purrs like a kitten and whines like a F1 car
Competition: Marbles in a coffee can due to gear backlash
Rotrex: Ability to dial in exactly what psi you want to run with in cabin boost select options
Competition: Choice between 8psi or 9psi pulley. Manually removing them to swap.
Rotrex: Most affordable supercharger kit on the market that can break 500whp.
Competition: More expensive.

***We are just scratching the surface on what this kit can do!***

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ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

redondoaveb

And don't forget to add, Vortech's customer and technical service are one of the worse to deal with.

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Fast Intentions "Stage Seb" twin turbo #098- Specialty Z/Tial-Xonarotor/CJM/Ecutek/HKS/KW/SPL/Hotchkis/Rohana/Toyo
750whp/700ft.lbs

TopgunZ

I also forgot to add:

Rotrex: 50,000 mile service (oil change) Once every 3.5 years
Competitor: 7,000 mile service (oil change) Once every 6 months

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ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

DrBacon

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.

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 15psi is due to belt slip? How did you figure out and know "proper belt tension"?

DrBacon

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.

TopgunZ

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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ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

INFmstrTech

Stillin plenum with A2A setup....15.2 psi with a v3 SCi trim 2.87 serpentine pulley, 3.47 jackshaft pulley, 2.95 supercharger pulley, K&N filter. Validated through EcuTek data log. I’m sure if I had an Si or upgraded Ti trim and no filter it may be more...but that v3 can’t take that abuse for long before the oil slinger is destroyed and is eaten by the gears-trust me on that.

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‘08 coupe w/Stillen SC, Custom A2A, SD, ID1050x, e85, eagle rods, high temp coated pistons, P&P heads, JWT C2, manual swap, stage 2 clutch. EcuTek(Eugene)

Optimiser

I have also have Stillin plenum with A2A setup but about 2000rpm slower with my pulley sizes (checked with Vortex calculator), but with upgraded Si trim and only get 10psi. I'm also running the "standard" belts on serp and SC. Are you using the Gates "RPM" belt(s)?
I have ordered these to see if they will help with boost, otherwise I have no idea how you could get 50% more boost than me, but would love to know.

zpwrgirl

Ok, so this would be my first major purchase for my Z. If I can't do 700+ due to having stock internals and block, what all do I need besides this kit? Trying to figure the total cost for parts.