4.2 numbers
The Godfather
Joined: Sep 2005
Posts: 15,480
From: Temple, Texas
RE: 4.2 numbers
The roots kit is cheaper than a centrifical, but marginally so at that.
Here's a quick summary.
Roots = low to mid range torque and hp, however they tend to suffer from sever lag in the upper rpms due to their design and inefficiency at producing boost. Hense why so many 03/04 Cobra owners can their M-112 and go with something better.
Centrifugal = mid to high range troque and boost, they still lag a little, but only in the extreme upper RPMs (or out of the range of a stock engine). They will be slower down low than a roots, but in a longer race, they're nearly always faster due to their power placement and better efficiency at making boost.
Here's a quick summary.
Roots = low to mid range torque and hp, however they tend to suffer from sever lag in the upper rpms due to their design and inefficiency at producing boost. Hense why so many 03/04 Cobra owners can their M-112 and go with something better.
Centrifugal = mid to high range troque and boost, they still lag a little, but only in the extreme upper RPMs (or out of the range of a stock engine). They will be slower down low than a roots, but in a longer race, they're nearly always faster due to their power placement and better efficiency at making boost.
1st Gear Member
Joined: Apr 2008
Posts: 137
From:
RE: 4.2 numbers
ORIGINAL: jthorn9
The roots kit is cheaper than a centrifical, but marginally so at that.
Here's a quick summary.
Roots = low to mid range torque and hp, however they tend to suffer from sever lag in the upper rpms due to their design and inefficiency at producing boost. Hense why so many 03/04 Cobra owners can their M-112 and go with something better.
Centrifugal = mid to high range troque and boost, they still lag a little, but only in the extreme upper RPMs (or out of the range of a stock engine). They will be slower down low than a roots, but in a longer race, they're nearly always faster due to their power placement and better efficiency at making boost.
The roots kit is cheaper than a centrifical, but marginally so at that.
Here's a quick summary.
Roots = low to mid range torque and hp, however they tend to suffer from sever lag in the upper rpms due to their design and inefficiency at producing boost. Hense why so many 03/04 Cobra owners can their M-112 and go with something better.
Centrifugal = mid to high range troque and boost, they still lag a little, but only in the extreme upper RPMs (or out of the range of a stock engine). They will be slower down low than a roots, but in a longer race, they're nearly always faster due to their power placement and better efficiency at making boost.
The Godfather
Joined: Sep 2005
Posts: 15,480
From: Temple, Texas
RE: 4.2 numbers
I know this sounds nuts, but go play Forza 2 with any mustang and do a race around a track with a roots S/C, and a Centrifugal S/C, you'll see a slight difference in times, but Turbo is always best lol. Granted, it's just a game, but I find it's intellegence to be quite close to real world performance.
6th Gear Member
Joined: Feb 2007
Posts: 8,540
From: South FL
RE: 4.2 numbers
ORIGINAL: jthorn9
The roots kit is cheaper than a centrifical, but marginally so at that.
Here's a quick summary.
Roots = low to mid range torque and hp, however they tend to suffer from sever lag in the upper rpms due to their design and inefficiency at producing boost. Hense why so many 03/04 Cobra owners can their M-112 and go with something better.
The roots kit is cheaper than a centrifical, but marginally so at that.
Here's a quick summary.
Roots = low to mid range torque and hp, however they tend to suffer from sever lag in the upper rpms due to their design and inefficiency at producing boost. Hense why so many 03/04 Cobra owners can their M-112 and go with something better.