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View Full Version : Flywheel Performance Questions.


Bsmoke
09-14-2010, 01:51 AM
SPEC finally spoke with me upfront and told me the sound I was hearing from my clutch
was in fact something that people were reporting and that it was not likely going away.
Returning it for a refund. Have to return flywheel as well
I DONT still have my stock flywheel. (Wish I kept it)

I did ALOT of research on Exedy and phone calls etc.
Called Roush, Ford, a couple of vendors, spoke with people that had the clutch.
Found out they actually make for Ford Racing.
Decided on the Exedy Mach 400.

Because I needed a flywheel
I bought their Steel flywheel to match but later found out (go figure),
they used a new technology to make their steel flywheels as light
as aluminum ones.
I did not think to research the brand of flywheel.
I figured steel was steel as far as weight goes on a flywheel as I have
ALWAYS understood that to be true.
Now it's not.

I have been hearing that lightweight flywheels will cause you to lose
low end trq.

Is this flywheel going to make me lose the "throw me back in my seat" feel
that my 4.10's gave me? I ABSOLUTELY love the feel of my 4.10's when I step on
it and DONT want to loose that.

I am also really worried because I heard you have to step on it more at first from a start and
my cams ALREADY make it so I have to do that.

If it will do these things I need to find another flywheel and return this one when it comes
and not open the box.


Then I'll have to find an aftermarket brand flywheel that will work with this clutch.
I checked online and Ford sells the stock flywheel for 700 fucking bucks.
So I'll have to find an aftermarket that will match to this clutch.
(Or someone that has a stock one lying around)
I know though that if the flywheel is thicker/thinner than
the stock one or the Exedy it will not fit properly with the new
clutch and I could be back to the same place as far as having noise issues or chatter issues etc.


As for normal vs lightweight flywheels...
I have never compared a steel flywheel to an aluminum one in these cars,
or any car as a matter of fact... so I don't know what changes would be in store for me.

Ricardo
09-14-2010, 06:47 AM
You shouldn't lose tq. You should be able to notice the engine gaining RPMs quicker. In theory the less mass to have to spin up, the more available HP/TQ? Same thing with aluminum driveshaft.
Someone else might add to this.

brown7
09-14-2010, 08:06 AM
you wont even notice.



http://www.latemodelrestoration.com/Product/List?category=Mustang-Manual-Transmission-Flywheels&year=2007

Bsmoke
09-14-2010, 10:40 AM
Well I found a stock flywheel.
Thx for the link...

I actually found it on newtakeoff.com
The man. number was different so I thought it was a wrong part at first but called Ford and it turns out they had the engineering number on the website listed instead of the part number.

I had a number of people refer me to them.
Got it for like 90.00 shipped and it is brand new.

Seems like this issue is widely debated as far as what it does to the "feel"...
and what it does in reality.

I do know that I like the car the way it is as far as get up and go.
And I know the cams already make starting from a stop... when driving normally... already "boggy" compared to without them so I don't want to add to it.

Plus this does save me money.
The flywheel from them was about 325.00


I guess I can make up my mind once they get here lol.

Bsmoke
09-15-2010, 03:02 AM
Anyone here about stock flywheels shattering with aftermarket clutches?

I'm running 312RWHP 308trq.
The clutch is rated for 425trq to the wheels.
I will be lucky to ever see 400RWHP on the car.

Just wondering what you guys thought about that side of the issue.

Black_Bullitt
09-15-2010, 04:30 AM
Never heard of that.

Bsmoke
09-15-2010, 08:51 AM
They actually make something called a scatter shield for protection against that.
I think the damn things go around the OUTSIDE of your tranny.
From what I heard if a flywheel shatters you can lose your feet.

Do most of you guys use stock flywheels with aftermarket clutches?

Bsmoke
09-15-2010, 08:54 AM
you wont even notice.



http://www.latemodelrestoration.com/Product/List?category=Mustang-Manual-Transmission-Flywheels&year=2007

Exedy says not to use other companies aftermarket flywheels because the dimensions are different and lead to problematic chatter, and/or vibration, and fitment issues. Even went as far as to talk about the warranty. They did say the stock flywheel would fit.
It seems like if the stock one would then aftermarket would but he explained to me how mixing aftermarket clutches and flywheels
can cause problems. Took a while