Nissan 370Z Forum
Page 2 of 2 1 2
Show 40 post(s) from this thread on one page

Nissan 370Z Forum (http://www.the370z.com/)
-   Engine & Drivetrain (http://www.the370z.com/engine-drivetrain/)
-   -   Supercharger Upgrade SCI -> SI (http://www.the370z.com/engine-drivetrain/137839-supercharger-upgrade-sci-si.html)

DrBacon 06-09-2022 11:07 PM
Quote:
Originally Posted by NissanTracker (Post 4026144)
Yeah... the HR on 93 pump gas will only go for 12 psi safely. I just want to shift the power curve to the left. I don't see why a manual boost controller just set to 12psi shouldn't do it. But, there are some cool features on those Greddy Profecs... not sure if I actually would use them though.
That's effectively what the Rotrex kit does, just spins the blower at full potential using a wastegate to limit the additional boost resulting in moving the entire boost curve left. The exact same thing can obviously be accomplished with a vortech kit as well. The SI would get you part of the way there but a TI trim blower would be more comparable to the Rotrex in terms of CFM.

redondoaveb 06-09-2022 11:50 PM
Quote:
Originally Posted by DrBacon (Post 4026152)
That's effectively what the Rotrex kit does, just spins the blower at full potential using a wastegate to limit the additional boost resulting in moving the entire boost curve left. The exact same thing can obviously be accomplished with a vortech kit as well. The SI would get you part of the way there but a TI trim blower would be more comparable to the Rotrex in terms of CFM.
I don't know how well the Ti trim works on an hr but it didn't work worth a sh!t on my vhr. It gained a ton of boost but lost power and torque. Had to go back to the Si volute and impeller to get the power back

NissanTracker 06-10-2022 10:10 AM
Quote:
Originally Posted by DrBacon (Post 4026152)
That's effectively what the Rotrex kit does, just spins the blower at full potential using a wastegate to limit the additional boost resulting in moving the entire boost curve left. The exact same thing can obviously be accomplished with a vortech kit as well. The SI would get you part of the way there but a TI trim blower would be more comparable to the Rotrex in terms of CFM.
Yeah...i saw that as well.

NissanTracker 06-13-2022 07:48 PM
Quote:
Originally Posted by redondoaveb (Post 4026145)

I agree, a manual boost controller should be fine for your situation.
What size external wastegate did you end up with? I'm seeing anything from 38mm, 44, 46, 50, 60. Finding aluminum flanges seems to be a challenge as well. I'm trying to find something that is the same size as the 50mm Tial flange.

redondoaveb 06-13-2022 09:35 PM
Quote:
Originally Posted by NissanTracker (Post 4026278)
What size external wastegate did you end up with? I'm seeing anything from 38mm, 44, 46, 50, 60. Finding aluminum flanges seems to be a challenge as well. I'm trying to find something that is the same size as the 50mm Tial flange.
It was a 44mm. We tried a 60mm at first but it didn't work right. I guess there's an issue with dumping boost too quickly.

NissanTracker 06-14-2022 08:08 AM
Quote:
Originally Posted by redondoaveb (Post 4026279)
It was a 44mm. We tried a 60mm at first but it didn't work right. I guess there's an issue with dumping boost too quickly.
Haha... I ordered a 44 and a 60. will Cancel the 60mm.

redondoaveb 06-14-2022 09:23 AM
Quote:
Originally Posted by NissanTracker (Post 4026288)
Haha... I ordered a 44 and a 60. will Cancel the 60mm.
Definitely cancel the 60

NissanTracker 06-14-2022 07:09 PM
Quote:
Originally Posted by redondoaveb (Post 4026289)
Definitely cancel the 60
I had that thought about the wastegate dumping too much air with the 60mm and got the 44 just in case. Thanks again for the info!

Will report back.

redondoaveb 06-14-2022 09:02 PM
Quote:
Originally Posted by NissanTracker (Post 4026319)
I had that thought about the wastegate dumping too much air with the 60mm and got the 44 just in case. Thanks again for the info!

Will report back.
You're welcome. Happy to help

NissanTracker 06-23-2022 11:23 AM
Actually curious, when the wastegate opens up when boost is reached... does it get loud? I was annoyed with the 50mm Tial bypass valve and ended up putting a recirc + silencer.

NissanTracker 06-23-2022 11:23 AM
Quote:
Originally Posted by redondoaveb (Post 4026324)
You're welcome. Happy to help
Finally just found an aluminum flange for the 44 mm wastegate. What a pita. I went through 3 different sets of V band flanges... only to realize that the Tial wastegate needs a specific V -band style.

Automods.com ended up having it... i grabbed one from ebay:

https://www.ebay.com/itm/281725022922

apparently this is a popular honda mod for high end turbo drag cars. They use the wastegate for launching....

redondoaveb 06-23-2022 01:13 PM
Quote:
Originally Posted by NissanTracker (Post 4026719)
Actually curious, when the wastegate opens up when boost is reached... does it get loud? I was annoyed with the 50mm Tial bypass valve and ended up putting a recirc + silencer.
Nope, not loud at all

shawnberry45 08-31-2022 08:29 PM
I actually just had this upgrade done recently….. finally hit 10lbs with a filter in 92 degree summer heat lol. I’m on V1 TopGunz kit. Previous only saw 8lbs with filter… so happy with the upgrades so far. I’m also on a 9LB pulley.

Midrange is a lot better! Hard to describe just easier to drive quicker into boost



Quote:
Originally Posted by NissanTracker (Post 4025976)
Hey forum,

I run the TopGun V1 supercharger kit after going from the default SCI setup Stillen offered. According to Vortech, the V3 SCI flows 1050 cfm whearas SI is 1150.

I am trying to gain a bit of more "usable" power in the low to mid range and this is my last stop. Has anyone actually done some SCI -> SI trim upgrade and what was the experience like? Was it worth it?


thanks!

-NT


All times are GMT -5. The time now is 12:44 AM.
Page 2 of 2 1 2
Show 40 post(s) from this thread on one page

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2