Topgunz ROTREX C38R Supercharger Kit

SwedeZ · 04-18-2021, 07:05 AM

Quote:

Originally Posted by 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.

Did you read the product page?

It mentions:

91/93 OCTANE MINIMUM REQUIREMENTS - up to 500whp

- 1000cc injectors (Highly recommend Plug and Play Clips)

- 340lph pump with install kit and voltage stabilizer kit

- Ecutek package (Interface, deskey, license)

- 4 bar omni MAP sensor

- Tune required (We offer a base or remote tune package, see main page)

(All components listed are available on the main page)

VHRpurr · 04-18-2021, 09:24 AM

Quote:

Originally Posted by 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.

....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

Peabo · 04-23-2021, 05:36 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.

blankface · 04-18-2021, 01:06 PM

Quote:

Originally Posted by 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.

You will likely need a very beefy clutch upgrade for that much power.

Sent from my Pixel 3 using Tapatalk

GrayGhost · 04-18-2021, 12:43 PM

What will this kit sound like with regards to the blow off of excess boost? Will there be a way to completely silence it?

I know on your other kit there were methods but i can only imagine the sounds when you only want to run 10psi but its making 23.

Sent from my iPhone using Tapatalk

blankface · 04-18-2021, 01:13 PM

Are there any clutch recommendations if I want to make 500 WHP with this kit? I have roughly estimated a maximum of around 500 torques at the crankshaft. Zspeed has a stage 2 clutch rated at 480 but he reports some safety range included in that.

Sent from my Pixel 3 using Tapatalk

VHRpurr · 04-18-2021, 01:24 PM

Quote:

Originally Posted by blankface

Are there any clutch recommendations if I want to make 500 WHP with this kit? I have roughly estimated a maximum of around 500 torques at the crankshaft. Zspeed has a stage 2 clutch rated at 480 but he reports some safety range included in that.

Sent from my Pixel 3 using Tapatalk

Call up Joe at ZSpeed and he’ll give you the hookup. I believe their Stage 3 clutch setup is the one I see a lot of twin turbo guys running. Good for them, it’s god enough for me! Plus, you’ll want to do a CSC delete since you’re already there, may as well. Oh, and get an RJM Clutch pedal cuz the stock one is absolutely garbage to put it nicely. That helper spring is trash.

redondoaveb · 04-18-2021, 01:42 PM

Quote:

Originally Posted by blankface

Are there any clutch recommendations if I want to make 500 WHP with this kit? I have roughly estimated a maximum of around 500 torques at the crankshaft. Zspeed has a stage 2 clutch rated at 480 but he reports some safety range included in that.

Sent from my Pixel 3 using Tapatalk

Southbend stage 3 is a great clutch. It's full face so it drives like stock, it's just a little stiffer and will hold that power and torque.

TopgunZ · 04-30-2021, 07:18 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, 07:29 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, 07:52 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, 07:55 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, 08:20 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.

HapaZ · 05-06-2021, 05:47 PM

How'd that dyno-day turn out?

TopgunZ · 05-06-2021, 06:18 PM

Quote:

Originally Posted by HapaZ

How'd that dyno-day turn out?

It's this coming Monday.

04-18-2021, 12:43 PM	#5 (permalink)
GrayGhost Base Member Join Date: Sep 2017 Location: Florida Posts: 106 Drives: 40TH Rep Power: 8	What will this kit sound like with regards to the blow off of excess boost? Will there be a way to completely silence it? I know on your other kit there were methods but i can only imagine the sounds when you only want to run 10psi but its making 23. Sent from my iPhone using Tapatalk blankface and zpwrgirl like this.

04-30-2021, 07:18 AM	#9 (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

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04-18-2021, 01:13 PM	#6 (permalink)
blankface Base Member Join Date: Sep 2018 Location: Dallas Posts: 3 Drives: 15 370Z 6MT Coupe Rep Power: 7	Are there any clutch recommendations if I want to make 500 WHP with this kit? I have roughly estimated a maximum of around 500 torques at the crankshaft. Zspeed has a stage 2 clutch rated at 480 but he reports some safety range included in that. Sent from my Pixel 3 using Tapatalk

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HapaZ Base Member Join Date: Sep 2014 Location: NorCal Posts: 246 Drives: 2012 370z Base Coupe Rep Power: 11	How'd that dyno-day turn out?

***Topgunz ROTREX C38R Supercharger Kit***

Topgunz ROTREX C38R Supercharger Kit