ass end options
#1
*** end options
I'm finally going to swap out something from the MSM 4.1 torsen I've got. I daily this thing at upper 300s hp, 6-speed and 4.1 is silly.
Has anyone used this 3.3 from MFactory?
MFactory Competition Products - Performance Driveline Components
Or, does anyone have opinions about other options to handle 400hp? Should I be looking at some other swap before spending $800 on the 3.3 (with replacement parts)?
thanks!
Has anyone used this 3.3 from MFactory?
MFactory Competition Products - Performance Driveline Components
Or, does anyone have opinions about other options to handle 400hp? Should I be looking at some other swap before spending $800 on the 3.3 (with replacement parts)?
thanks!
#2
https://www.miataturbo.net/suspensio...-92250/page21/
Ted75zcar might be localish to you. He just put a set in.
Ted75zcar might be localish to you. He just put a set in.
#6
I'm off hunting two options. One, getrag diff at 3.23, which will require a custom driveshaft and half shafts. Or get a 3.63:1 Torsen from UKPrestigeSpares for $700.
Easy button is the 3.63 for sure. But may just be delaying the inevitable of doing some Kmiata BMW swappage of tranny and diff.
And no, not 260 at the wheels. 400 at the wheels is what I'm at. But I'm babying it.
Easy button is the 3.63 for sure. But may just be delaying the inevitable of doing some Kmiata BMW swappage of tranny and diff.
And no, not 260 at the wheels. 400 at the wheels is what I'm at. But I'm babying it.
#12
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I would think you want to swap to a different transmission at the same time. Going to a taller diff will increase the torque seen by the 6 speed, and you're already in gear-shredding territory even though you're babying it. Replace and sell the entire driveline. There are people out there that will pay a premium for the MSM driveline.
#14
A taller rear end (resulting in less mechanical advantage to the wheels) means more torque at the engine required accelerate the car from a dead stop. A taller diff would also increase duration in which the engine is operating in the peak torque as it takes longer to accelerate through gears. Longer duration at high stress could be detrimental to component life.
#17
It doesn't necessarily increase the max torque seen at the gearbox - an engine provides up to X lb-ft torque, the transmission changes the gearing to increase mechanical advantage to the differential and ultimately the wheels.
A taller rear end (resulting in less mechanical advantage to the wheels) means more torque at the engine required accelerate the car from a dead stop. A taller diff would also increase duration in which the engine is operating in the peak torque as it takes longer to accelerate through gears. Longer duration at high stress could be detrimental to component life.
A taller rear end (resulting in less mechanical advantage to the wheels) means more torque at the engine required accelerate the car from a dead stop. A taller diff would also increase duration in which the engine is operating in the peak torque as it takes longer to accelerate through gears. Longer duration at high stress could be detrimental to component life.
#19
oh I just read WHP as WTQ.
you are getting too pedantic. I just want to get the power down and stop being annoyed by shifting 5 times on my way to the next stop sign. On cold days, I spin the rear wheel in 4th gear. It gets old.
I'd also love to see what kind of 0-60 times I can achieve. I have to shift into third to even get there.
I'm moving forward with a 3.63:1 swap into the existing MSM rear torsen. It'll be fine. I don't need this kind of power, I can't even get it to the ground.
you are getting too pedantic. I just want to get the power down and stop being annoyed by shifting 5 times on my way to the next stop sign. On cold days, I spin the rear wheel in 4th gear. It gets old.
I'd also love to see what kind of 0-60 times I can achieve. I have to shift into third to even get there.
I'm moving forward with a 3.63:1 swap into the existing MSM rear torsen. It'll be fine. I don't need this kind of power, I can't even get it to the ground.
#20
A 3.6 option for your build is a great way to go. Wish I would have gone that way but the 3.9 was an easy solution at the time for us. For daily/city type of driving we generally turn ours down to about 18 psi boost but it’s sure fun to go “north of 4” at 24 pounds even as unnerving as it can be in a light car. Certainly cannot goose it around a short curve or turn.