flywheel and clutch

I want to get more power to the wheels, I was thinking that a lighter flywheel and stage two clutch would do the job, I just want to know if it would hurt my 6 spd

 

FLYWHEEL:
From my limited understanding of physics it seems to me that a lighter flywheel would have little noticeable impact whatsoever. If anything it might reduce your gas mileage and make for some rough starts where you need to rev up the engine more to engage the clutch. There would not be any additional power to the wheels.

My rationale is as follows:
Torque is basically just force. Force = Mass * Acceleration. The flywheel is the mass. Less mass with same acceleration should result in reduced torque.


CLUTCH:
You would only benefit from a multistage clutch if you had a lot of horsepower. Maybe with a TRD Supercharger or aftermarket Turbocharger you could generate enough to warrant a stage 2 or 3 clutch? But not stock, you'd be wasting your money, and the 2/3 stage clutches are a lot stiffer and more difficult to shift. Basically the higher stage clutches have extra plates in them that maintain a zero clutch slippage with rapidly increasing torque. My feeling is that even with a 305HP mod to your truck (the highest I've heard of) you wouldn't benefit from this upgrade.

Maybe if you go nitro

ANSWER TO THE QUESTION ALREADY:

OK, so there wouldn't be any harm to your 6-speed tranny from changing the flywheel to a lighter one and swapping out to a 2/3 stage clutch. Assuming they are of comparable quality build and durability to the OEM. But if you do go nitro, or TRD Super, or Turbo then you will add stress to your tranny upon rapid acceleration.

 

well I am going to go with trd supercharger anyways, I should have said that in the first place, but just wanted to know that in the event that I do will a 2/3 clutch and a lighter fly wheel make a difference.

 

Torque is Force over a distance. The engine outputs a FIXED torque which translates to a fixed Force (assuming the distance stays the same). If you reduce the mass of the flywheel you do get greater acceleration.

 

One caveot: Old drag racers used to use HEAVIER flywheels so that they could get off of the line quicker. With no rolling resistance or with the perfect launch, the lighter flywheel set up wins every time. The down side is that it's harder to launch a fast car with the lighter flywheel w/o bogging it down (but it zips around town and is a hoot to drive once you get going ).

 

Back when I was running muscle cars, many people put lightweight flywheels in. I'm thinking back 15 years but standard flywheels were nearly 40 lbs and lightweight ones were only like 20. Once rolling, you're correct, they didn't change much but it was at least a small improvement. Twenty pounds less the engine wastes power spinning in the block will increase hp. However, people mainly bought them for the difference off the line. The lower weight allowed the clutch to grab faster and easier therefore getting you off the line faster. If I remember correctly, many were made out of aluminum and wore out faster. I think people put weaker starters in their cars to prevent stripping the aluminum teeth upon engagement. I think they made skeletonized steel ones too.

My information could be inaccurate. That was a long time ago and it was at a time in my life was frying brain cells was an acceptable past time.

 

I believe the stock weight for our flywheel is 31 lbs and the lighter one is 18 lbs. In theory, the lighter you are the quicker you go. If you want to go faster, why stop at the flywheel when you can also get a custom driveshaft, electric cooling fan, etc. Every little bit all adds up in the end. You can go as fast as you want that is, if you can afford it. You might also want to look at a lighter wheel and tire set up for maximum accelaration. I'm not really sure what you're going for here though. Daily driver or track?

 

Before I used to own, when I was 16, a honda s2000. I gave it up and sold it because I needed a truck, not a sports car. when I bought my truck and found it in a 6 spd, I thought 0-60 in 8 sec. when I did 0-60 in my truck I got 7 flat. but anyhow I just want a little kick out of my daily driver, I don't have any plans of setup for track. I just know that these trucks are amazing and I really just want to try to make it a little quicker just for fun.

 

A better clutch and supercharger is all you need then. Don't bother with a lightened flywheel.