Topgunz ROTREX C38R Supercharger Kit

Peabo · 04-23-2021, 06:36 PM

Quote:

Originally Posted by VHRpurr

....furthermore it’s typically not the HP value that destroys the motors it’s the torque getting beyond about 500wtq that blows the connecting rods through the block. It’s like an unwanted axe throwing contest inside your engine, you’re just waiting to see which one of 6 punches a hole first. Superchargers in general have a linear curve so if you hit 500wtq it’s at the very top near redline, your motor is spinning at a high RPM so it’ll wear the motor out less quickly. On the flip side, twin turbo setups make torque very low in the RPM band which puts a lot of turning/twisting force on those con rods which is how you end up having a bad day if you just “tune for max HP”, disregard the fact you’re making 550+ tq, and give ‘er a full send or 2, hope you got $$$ for a built block. Then again, the torque pulling you like a freight train down low is what people love. It’s all what you want to do.

Still need to see a dyno or driving video of the TG C39-110 kit.... I need to hear some S/C soundsssss

But the Fast Intentions Twin Turbo guys have been running over 550wtq for years - some at 580wtq.

INFmstrTech · 04-29-2021, 01:31 PM

Quote:

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

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.

Optimiser · 04-29-2021, 09:43 PM

Quote:

Originally Posted by 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.

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.

DrBacon · 04-30-2021, 07:08 AM

Quote:

Originally Posted by 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.

It does happen. I have nothing more than a stock v3 SI and an RPM belt on the supercharger side (planning on trying to add one to the serp side as well as an experiment in the near future). I really can't stress enough how much of a difference that RPM belt makes. That normal belt stretches VERY quickly and begins to slip as a result. The last dyno run I did with the "normal" belt was at 10.5psi because of how bad it got.

I don't think we should continue to derail Topgunz topic with this old kit talk though.

TopgunZ · 04-30-2021, 08:18 AM

True. Lets get back on topic here.

We are going back to the Dyno on Monday and will have additional boost level logs to share. I think we will do a 15psi log, 20psi and then also one where we remove the filter system to see where the kit can go. However, we will most likely run out of fuel again so we will chop throttle at 100% duty cycle and then superimpose the boost line to show what the kit could do if someone were to string it all the way out.

I was talking to a guy on the phone last night and he was saying that he was trying for the NA record and was taking his motor up to 8500rpm on the dyno. He is now going built block and this kit. Cant wait to see someone run this thing up.

DrBacon · 04-30-2021, 08:29 AM

Quote:

Originally Posted by TopgunZ

True. Lets get back on topic here.

We are going back to the Dyno on Monday and will have additional boost level logs to share. I think we will do a 15psi log, 20psi and then also one where we remove the filter system to see where the kit can go. However, we will most likely run out of fuel again so we will chop throttle at 100% duty cycle and then superimpose the boost line to show what the kit could do if someone were to string it all the way out.

I was talking to a guy on the phone last night and he was saying that he was trying for the NA record and was taking his motor up to 8500rpm on the dyno. He is now going built block and this kit. Cant wait to see someone run this thing up.

Stock intake manifold? I recall there being problems where the stock manifold can crack at those higher boost pressures.

Spooler · 04-30-2021, 08:52 AM

Quote:

Originally Posted by DrBacon

Stock intake manifold? I recall there being problems where the stock manifold can crack at those higher boost pressures.

It should last at that. Mine started leaking after a good day of running 25psi of boost. That boost pressure was at 4000rpms all the way to 8k.

TopgunZ · 04-30-2021, 08:55 AM

Quote:

Originally Posted by DrBacon

Stock intake manifold? I recall there being problems where the stock manifold can crack at those higher boost pressures.

Yes stock manifold.

Do you have a picture of one of these cracked ones? I think its more of a scare tactic for people to buy unnecessary parts and spend money.

Spooler · 04-30-2021, 09:20 AM

Quote:

Originally Posted by TopgunZ

Yes stock manifold.

Do you have a picture of one of these cracked ones? I think its more of a scare tactic for people to buy unnecessary parts and spend money.

WRONG, they don't crack. They start leaking at the back. 20psi should be fine. I ran 22psi with no issues. 25psi, forget it. If you get up in the 20psi range that is build
motor territory anyways.

INFmstrTech · 05-05-2021, 01:16 PM

[QUOTE= I don't think we should continue to derail Topgunz topic with this old kit talk though.[/QUOTE]

Agreed, just wanted to relay how it was achieved. That being said...I would MUCH MUCH rather move to the rotrex setup. Much easier to reach HP #’s(if your chasing that), the efficiency of the supercharger to me is one of the biggest pros; plus I HATE the Stillen manifold...I have the jx/qx60/maxima(whatever you want to go with there) T/B’s and adapters that absolutely do not fit because of the location of the Stillen mounting for the stock t/b. Having the stock manifold would just be that much better, especially with the bigger t/b’s. Super impressive Topgunz-keep up the fantastic work!

HapaZ · 05-06-2021, 06:47 PM

How'd that dyno-day turn out?

TopgunZ · 05-06-2021, 07:18 PM

Quote:

Originally Posted by HapaZ

How'd that dyno-day turn out?

It's this coming Monday.

Dahawkster · 05-07-2021, 03:54 AM

Quote:

Originally Posted by TopgunZ

It's this coming Monday.

Shucks, I kept checking for the results thinking it was this past Monday lol

TopgunZ · 05-07-2021, 08:36 AM

Quote:

Originally Posted by Dahawkster

Shucks, I kept checking for the results thinking it was this past Monday lol

It was supposed to be but by the time we received the new injectors and had them in we only had a day to road tune prior to the dyno and it was raining that day. So we had to push it back.

FrankEtier · 05-16-2021, 01:29 PM

Quote:

Originally Posted by TopgunZ

It was supposed to be but by the time we received the new injectors and had them in we only had a day to road tune prior to the dyno and it was raining that day. So we had to push it back.

Any updates Aaron?

04-30-2021, 08:18 AM	#155 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6834	True. Lets get back on topic here. We are going back to the Dyno on Monday and will have additional boost level logs to share. I think we will do a 15psi log, 20psi and then also one where we remove the filter system to see where the kit can go. However, we will most likely run out of fuel again so we will chop throttle at 100% duty cycle and then superimpose the boost line to show what the kit could do if someone were to string it all the way out. I was talking to a guy on the phone last night and he was saying that he was trying for the NA record and was taking his motor up to 8500rpm on the dyno. He is now going built block and this kit. Cant wait to see someone run this thing up. SwedeZ likes this. __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

05-05-2021, 01:16 PM	#160 (permalink)
INFmstrTech Base Member Join Date: Nov 2018 Location: Near Frisco, TX Posts: 42 Drives: 08coupe, 07sedan Rep Power: 6742	[QUOTE= I don't think we should continue to derail Topgunz topic with this old kit talk though.[/QUOTE] Agreed, just wanted to relay how it was achieved. That being said...I would MUCH MUCH rather move to the rotrex setup. Much easier to reach HP #’s(if your chasing that), the efficiency of the supercharger to me is one of the biggest pros; plus I HATE the Stillen manifold...I have the jx/qx60/maxima(whatever you want to go with there) T/B’s and adapters that absolutely do not fit because of the location of the Stillen mounting for the stock t/b. Having the stock manifold would just be that much better, especially with the bigger t/b’s. Super impressive Topgunz-keep up the fantastic work! JARblue, TopgunZ and sx moneypit like this. __________________ ‘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)

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***Topgunz ROTREX C38R Supercharger Kit***

Topgunz ROTREX C38R Supercharger Kit