What Setup has the Best Low End Torque?
Registered User
Joined: Jul 2013
Posts: 351
Likes: 1
Think of it this way. Torque is more levers and gears. Sure you can just increase input force onto the gear or lever but when talking torque of motor it is directly proportional to length of connecting rods to crank shaft. The crankshaft is your lever and the longer the stroke is the more torque you will have at output with the same input force. The turbo will just increase load to input yes I no that will increase torque but its not the preferred way of doing so.
Changing your gear ratio in your differential my be a better approach.
Changing your gear ratio in your differential my be a better approach.
Registered User
Joined: Jun 2008
Posts: 854
Likes: 0
From: Arizona PHX
What the guys above said get an LS motor lol.. BUT if you do stick with our motor i have the SOS kit with the twin scroll 35R (bigger of the two) thats what she said btw and can share a little bit. I have an AP1 with the original F20 and my peak torque is at roughly 4200rpm on 91 pump gas. It starts to fully spool up around 3800rpm but torque is pretty much flat after 4200rpm and spikes by another 10-20ftp at 6500rpm but you're pretty much at full torque after 4200rpm. I was told that with a 30R you are looking to decrease the spool time and peak torque by roughly 200rpm. If you have an F22 this goes down another 100-200 rpm and not to even mentioned E85. But yeah quick spool do a twin scroll 30R for sure. I chose the 35R because once i go for more power i wont be running as much PSI to achieve my power goals. Hope this helps
Joined: Oct 2002
Posts: 8,044
Likes: 6
From: South Florida
What the guys above said get an LS motor lol.. BUT if you do stick with our motor i have the SOS kit with the twin scroll 35R (bigger of the two) thats what she said btw and can share a little bit. I have an AP1 with the original F20 and my peak torque is at roughly 4200rpm on 91 pump gas. It starts to fully spool up around 3800rpm but torque is pretty much flat after 4200rpm and spikes by another 10-20ftp at 6500rpm but you're pretty much at full torque after 4200rpm. I was told that with a 30R you are looking to decrease the spool time and peak torque by roughly 200rpm. If you have an F22 this goes down another 100-200 rpm and not to even mentioned E85. But yeah quick spool do a twin scroll 30R for sure. I chose the 35R because once i go for more power i wont be running as much PSI to achieve my power goals. Hope this helps
Joined: Jan 2012
Posts: 621
Likes: 4
From: Tolland, Connecticut
I loved the results with a standard GT3076R with .63 Tial V-Band housing on my P-Tuning kit. Even though my motor was old and whooped I still made on 13psi 289tq and 379hp. On leaded sunoco 110 oct and 18psi Evans made 378tq and 507whp. The car was extremely responsive and quick spooling but still pulled all the way to redline. If I was building a fun street car it would be an OEM sleeve stock piston K24 crank 2.4 Liter and a small GTX3071R on a Log manifold or Short runner tubular. It should make like 450tq and 450hp at low psi level.
Registered User
Joined: Jan 2014
Posts: 139
Likes: 1
You don't wanna size yer turbo so small, that it can't hold yer powerband till redline...these motors breath very well, you need a well breathing system to feed the beast...otherwise yer power drops off and yer slow.
Point #2 is that you don't want something small enough, that you are in boost while cruising, or on the highway...no benefit and you'll have shitty gas mileage.
Point #2 is that you don't want something small enough, that you are in boost while cruising, or on the highway...no benefit and you'll have shitty gas mileage.
