What are your thoughts on adding low end torque and longevity on drive train parts (engine ,clutch,tranny,diff,axles engine mounts etc). I've been thinking that although a turbo or roots type blower will give you more torque down low (great) it may also put more strain and wear on drivetrain parts for just that reason .It takes the most energy when lifting or moving something heavy to initially get it in motion.My thinking is that a supercharger that builds torque more linearly with speed will be much easier on the s2k's lightweight drivetrain. Lets face it there are pros and cons to every form of FI you do to this car maybe one of the positive points of a centrifugal blower is linear torque which can mean better longevity.
Just for reference I know how nice down low torque feels since my previous rides were a modded C6 and a chipped 335i that had 340rwtq at 2k rpms. I really enjoy the linear rush of the KW kit , it's just a different high to me.

 

it really comes down to your driving habits. guys have broken rear ends and trannys with stock power and other guys have 500+ on stock stuff. slam gears and it's gonna break.

unless you have a lot of power it's rare for the stuff to break just flooring it while it's in gear, it'll happen on a launch or a shift.

 

I have read on these forums that down low tq does cause more stress on our motor not sure if it's true or not. It seems making more power up high is easier on the engine than making power down low. It may have to due with detonation. I would do more of a search.

 

its due to the motor being DESIGNED and created by honda engineers to make power in the higher RPM. this motor was not created to make good power in low rpms.. Created and signed for a Vtec that kicks on at 6k rpm

 

rpm doesn't matter, the forged internals are the same strength at any rpm, they don't get stronger as you rev out. tuning is 95% of what determines whether or not your motor lasts long. torque (at any rpm) is what will stress the drive train. for the most part the drive train is fine, it's those really high peaks when lunching or shifting that put the drive train over the edge.

 

[QUOTE=candymanjl,Mar 15 2009, 12:29 AM] rpm doesn't matter, the forged internals are the same strength at any rpm, they don't get stronger as you rev out.

 

your right, if there's more torque there's more stress on the motor. my point was in reply to someone else saying the motor was designed to only make power up top. the motor can take the extra power regardless of the RPM that the peak torque is at.

besides the stock torque curve is pretty flat. my 100% bone stock motor dyno was within 20trq from 3000rpm to redline.

 

Are we discussing the motor or the drivetrain??

The motor is forged and the drivetrain with the exemption of the differential is solid. I have seen many domestics with drivetrain issues in high hp applications. Twisted drive shafts cracked or destroyed transmissions broken motor mounts.

 

The F20/22 engine can make high rpm power easily, and cannot make low rpm torque as easy. That doesnt mean its easier on the engine to make high rpm power....youre spinning the motor faster and wear goes up exponentially with rpm. So when someone says " these engines get stressed if you make a lot of low end torque" thats just plain wrong. The reason this engine is that way is its rod/stroke ratio and cam profiles that are designed to make power up top. This isnt never going to be a low end torque monster, this engine wasnt designed for that. You want torque get a v8 or a long stroke 4 cylinder like a srt4 motor that loves low end.

 

[QUOTE=candymanjl,Mar 15 2009, 09:44 PM]your right, if there's more torque there's more stress on the motor.