[Codeman]

Ok, I had some guy talk to me at college today about this transmission he made, bla bla, the question I have is that he said that ever pound taking out of the drivetrain, meaning, clutch or converter, and drive shaft all rotating mass is the same as removing 72 lbs from your car. So I was wondering if the aluminum driveshafts are really worth it then? They are like six pounds lighter, so I would think that would be like removing 432 lbs from your car. That seems like a lot, I understand it would decrease rotational mass, and free up power. Because removing 432 is like dropping probably .4 in the 1/4, cuz roughly every 100 lbs is .1. So does anyone know about aluminum driveshafts? and if they would even add .1 roughly in the 1/4? I know they are pricey, but I am just curious, that guy made me think. Also, what about aluminum flywheels for manuals? Are they worth it?

[Matt.]

ive heard they should just be a finishing up mod like a tb for our cars. If you were going with a 8.8 rear end and installing it into a 6er its worth it, but not with the 7.5 rear end. Although if it is like removing 400 pounds from your car it might be worth your wild.

[mooses]

That guy is a retard and is completely wrong on his 1 lb = 72 lb BS. You will hardly feel the difference, aside from lower vibration. On our year mustangs, the aluminum driveshaft doesn't save too much weight over the stock one. I believe it's closer to being a 1:8 lb ratio.

An aluminum flywheel is an excellent mod. It is a much larger weight reduction, and the flywheel spins faster than the driveshaft (except for 4th and 5th gear of course) so the decrease in moment of inertia is much more noticeable. This means that a 1lb reduction in flywheel weight is better than a 1 lb reduction in driveshaft weight.

[Codeman]

well maybe he meant for the flywheel then? idk lol. And thanks for the help. Ok, so I have a couple questions on the aluminum flywheels, doesn't it make a difference on if you can use one, on certain ways that your engine is balanced?

[mooses]

Originally Posted by Codeman well maybe he meant for the flywheel then? idk lol. And thanks for the help. Ok, so I have a couple questions on the aluminum flywheels, doesn't it make a difference on if you can use one, on certain ways that your engine is balanced?

The spec aluminum flywheel comes with the weight attached for an externally balanced engine. You simply remove the weight if you have an internally balanced engine and you're good to go.

[Codeman]

Oh ok, thanks, i was always curious about that. It sucks, i just put a clutch in awhile ago, i should have done an aluminum flywheel. Oh well, i am sure mine will go soon since i have been rough on it.

[lcorriveau3]

According to Chassis Enginering by Herb Adams "The effect of reducing rotational inertia on the driveline has 15 the times the benefit of just reducing the weight of the car." THis means if you have a 3000lb car and reduce it's weight 15 lbs to 2985lbs it will be like adding 2.14 horsepower.
If you reduce 15 lbs rotating weight (ie driveshaft) @ the axle speed it will be like gaining 6.42 horsepower. If you reduce 15 lbs rotating weight (ie flywheel) @engine speed it is the equivelant of gaining 32.10 horsepower.

Hope this helps.

[sickfox]

Either way replace both them.

[stangcharger]

for every 10lbs of rotating mass that is reduced is like 100lbs of dead weight. It is about .1 in the 1/4 for every 10lbs.

for instance if you reduce 50lbs on your rims and tires ou will gain close to .5 in the 1/4. this will vary the more power you make.

[Codeman]

thanks guys, i really like all of the info. thanks. so does anyone know how much less the aluminum flywheel weighs?

[winnie51189]

I love how every post is another statement saying if you remove x-amount of rotational mass it's equivalent to y-amount of dead weight. LOL Makes it hard to tell which to believe unless you just go off basic assumptions.
Consider the following:
If a millionaire drops a penny in the gutter, does that make him no longer a millionaire? Now what if he dropped 2 pennies, or ten pennies, or even 100 pennies, is he still a millionaire?
we drive 6'ers which means our cars were born with an excessive amount of slowness. So stock 6'ers= slow, by reducing weight in any way this equals a slightly less slow stock 6'er. If you mod the 6'er it's even less slow. But in the end unless you are really gonna spend the money the 6'er still approximately equals slow.
All in all, considering the large amount of weight, removing a tiny fraction doesn't really make any difference until you are pushing more power, such as with power adders or at the very least H/C/I. Bolt-ons really aren't gonna get you enough power to actually make much of a difference to justify it.
Also most of the questions asked have been answered in detail many many times before. A little research can go a long way.

[HMUSN]

Originally Posted by black89GT Either way replace both them.

^ what he said.

[Codeman]

OK, when i replace my clutch, i will look into replacing both.

[goren813]

Si.

[longalan2]

not too mention, the safety factors as well.

[sickfox]

& Less vibrations

[chaaase]

i have an aluminum flywheel for your 6 for sale, used in good condition (100 miles on it) shoot me a PM.

[Jetflo]

Hi,

I'm new to this forum but have owned a couple of new edge V6 Mustangs - my favorite car.

I joined because I saw Winnie label my car as "suffering from an excessive amount of slowness" a few posts earlier. I flatly disagree.

Winnie,

Perhaps you should sell your car if you don't like it. Every vehicle is a different compromise and the owner is 100% responsible for owning the car they have. It's simple accountability. Happiness is being happy with what you have.

Greed is allowing your eyes to see the grass as greener next door. Pragmatism is seeing that the grass next door is greener but that it was done with spray paint to enable short sale. Bliss is realizing that your grass is "medical grade."

Try to smile more and worry less about what others think of your visions and dreams. Next time you see a retired couple with a show winning vintage car think about the love that went into that win.

If they did not think that a vintage car was something special and put all that love into it, then nobody else would be interested in that car either.

It is how the owner feels about an object that can make ordinary objects special. This is the basic message in "Herbie the Lovebug" (1970 version). It's the kind of movie that has equally powerful but substantially different messages for adults and children.

Thanks!

[ESG-642T]

Originally Posted by Jetflo Hi, I'm new to this forum but have owned a couple of new edge V6 Mustangs - my favorite car. I joined because I saw Winnie label my car as "suffering from an excessive amount of slowness" a few posts earlier. I flatly disagree. Winnie, Perhaps you should sell your car if you don't like it. Every vehicle is a different compromise and the owner is 100% responsible for owning the car they have. It's simple accountability. Happiness is being happy with what you have. Greed is allowing your eyes to see the grass as greener next door. Pragmatism is seeing that the grass next door is greener but that it was done with spray paint to enable short sale. Bliss is realizing that your grass is "medical grade." Try to smile more and worry less about what others think of your visions and dreams. Next time you see a retired couple with a show winning vintage car think about the love that went into that win. If they did not think that a vintage car was something special and put all that love into it, then nobody else would be interested in that car either. It is how the owner feels about an object that can make ordinary objects special. This is the basic message in "Herbie the Lovebug" (1970 version). It's the kind of movie that has equally powerful but substantially different messages for adults and children. Thanks!

Buy this sad speech you've given, your car suffers from an excessive amount of slowness, he was right.

[Jetflo]

Looks like you own a V6 too by your sig Stroker