Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Best Performance mods I've done

quiafe and lets see quiafe. More traction and a car length good be the difference between good gas and cooler conditions for the duratech.

I know I have better traction now, BUT all my races before the mods were close on take-offs 1st and 2nd then falling behind in 3rd and 4th gear.
After installing flywheel clutch and Quaife I was slowly gaining on all of my gears.
Cooler: that?s not the case here; most of our races were in the winter and spring. This summer we are breaking records for hottest summer it was in the 30°C when we raced at night. I think Hotter or Cooler air will affect both car not just mine, both of us have similar set-ups CAI with K&N filters.
Gas, I was using regular gas (87 Octane) from the same gas station (Petro Canada) that I've been filling from for the past 4 years.
Can you explain why the SVT's were designed with lighter flywheel (3lbs less) than the regular duratecs? My explanation performance gains.

Maybe you had bad luck with your flywheel, but it doesn?t mean there is no performance gain. I felt it and proved it by beating my friend.
Maybe it?s the whole setup Clutch and Flywheel, I've heard about a lot of people of having problems with aluminium flywheels and stock clutchs. Did you have an aftermarket clutch on your setup?

Can you give us more details ... changes to the way you have to drive, change to throttle response, change when letting off throttle, etc.??

a pussy fart

Ok ask any drag racer what type of flywheel the use and the will tell you steel. It has been proven on stangnet that there are no gains from aluminuim flywheels on the drag strip. I have one of thee heaviest duty clutch you can get. Metallic puck which can be ran with slicks if I wanted. I am not explain myself if you are happy with your 400 dollar cnc machined aluminium that is fine by me. You can aquire close to the same results with a steel flywheel by having it lathed down were it doesn't weigh as much. You can expect gains to an extent with making the mass lighter. If 10 Lb is so much better than 24 why didn't ford just put 10lb flywheels on everything? There has to be a medium between the two weights. If you are happy with your investment thats good. Good luck in your future mods.

I dont know why Ford didn't put it in 10lb flywheels, probably for the same reasons they didn't put in Cold Air Intakes, K&N Filters, LSDs, Superchargers or all the other goodies that you can buy from performance shops.
Or maybe because someone will always comeup with something newer and better "its called progress" coming up with innovative and more advanced parts.

:rolleyes:

The gain is from reducing rotating inertia (the flywheel) and allowing the power to be used to rotoate the wheels instead. It's simple physics. Work is required to moved something a certain distance over time. there fore when the mass of the object is reduced, less work is required to move it the same distance in the same time. Hence is the work (power) is not changed, i.e. y6our engine makes the same power after the addition of a lightened flywheel, then the time taken to move it (roate) is less, hence the quicker acceleration.

True the revs drop quicker, because the reduced moment of inertia, but hwo cares how fast they drop. If you shift high enough and quick enough, you can keep the engine revs in the power band, which on a duratec is pretty large.

Throttle response is obviously quicker, and it makes the car twitchier on the gas. Which means you have to learn to drive SMOOTHER.

Lightened flywheels release hp, not create it....remember that.

SVT did think about it..they reduced flywheel to 18 lbs from 21.5. Downside to less weight would be less smoothness, less energy stored for good launching from the line, less strength. Nothing is for free in car modding...

K&N filter ..mor hassel cleaning the thing for guys that do not like that sort of thing, more chance to foul MAF with oil (which happened to me and I did not even oil the K&N, just factory oiled). Power losses without an airbox vs SVT filter. K&N was used on Cobra R, Viper ACR but that is more a special case.

LSD, well they just cheaped out.

Hey, I notice that ford has decided to put an aluminum flywheel in the new '03 SVT Cobra Mustang. Hmmn....390hp,390ft.lbs.tq, blown 4.6L,6 speed, aluminum drive shaft, etc.... I want one!