well guys i have a issue... after i switch to the Fidanza flywheel it seems like my car has lost its umph so to speak between 2k and 3k it just falls on its face and once its a lil past 3k it takes off like a bat out of hell... what could i do to fix this issue? I was thinking of just replacing the Revco throttle body i have now back to my stock one and see what that does? what do you guys think? what else could this be if that wont fix it? thanks guys... oh btw my quartermile time is slower now too before i did the fidanza flywheel my best run was 15.4 back in march i think and now i went a month ago and my best was 15.8. does the quartermile time have to do with the humidity change between months or could it be this weird problem i have... thanks again..
On an N/A car, you will lose time on the quarter mile with a lightweight flywheel, because you have less momentum on the flywheel. then less momentum is there when you release the clutch, and not as much energy is there to transfer to the clutch and utlimately, the wheels. It's easier to rev quickly, but there is less momentum there because of the reduced weight. I see your future plan is to put a super charger on there, and that will help. I got the flywheel because i'm getting a turbo.
Other people will tell you that for a quarter mile car, a light weight flywheel is not always a good upgrade.
Well my plans have changed since i autox the car now... i am going all motor...
VTLoki wrote:On an N/A car, you will lose time on the quarter mile with a lightweight flywheel, because you have less momentum on the flywheel. then less momentum is there when you release the clutch, and not as much energy is there to transfer to the clutch and utlimately, the wheels. It's easier to rev quickly, but there is less momentum there because of the reduced weight. I see your future plan is to put a super charger on there, and that will help. I got the flywheel because i'm getting a turbo.
Other people will tell you that for a quarter mile car, a light weight flywheel is not always a good upgrade.
Your statement is interestingly wrong.
Flywheel momentum only helps the launch, not the rest of the run. On a large car with huge traction, a heavy flywheel can be used to store energy that can be dumped into the tires to get it moving quickly. But then after that, the larger mass of the flywheel is just additional load on the engine to accelerate.
If the car is traction limited (aka typical FWD), adding flywheel weight only worsens the traction problem with the added benefit (sarcasm) of slowing the car down the rest of the way down the track.
If your engine idles and can spin the tires off the line, then your flywheel is already heavy enough if not too heavy.
Any stored positive momentum only exists when the engine speed is higher than the rest of the driveline speed (clutch disengaged). If the engine speed is equal to the driveline (clutch engaged) or less than driveline speed then there is negative momentum and the weight is stealing power that could be otherwise used to move the car.
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a lightwieght flywheel is not a good idea on a n/a car. lighter would be ok, but light is not always the answer. i agree with VT and i would switch back to the stock until you get a turbo or supercharger...
2001 Ford F250 Superduty
7.3L PowerStroke Diesel
5" Turbo-Back Exhaust
XCal-2 With Tadds Tunes
Water/Methanol Injection
aFe Stage 2 Intake
Full Set of AutoMeter Gauges.
so whould this cause my dead spot in my power band?
anyone? or maybe its getting time to save money for a new motor... seeing the old slocav has 167k miles on it
it hurh when i see it on the odo.. but hey on the bright side i still get 35 miles to a gallon..... the other day i had 405 miles to a tank and still had about 2.5 gallons left or so... but what else could this be or is it the fact of the flywheel?
