Flywheel weight

Psycho Mythic

Psycho Mythic

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Does anybody know the weight of our OEM flywheels and what the benefit of a 19lb fidanza flywheel is? I assume they allow you to rev up faster :dontknow:
 
the consesus on here is the fidenza is too light for the weight of our trucks....an inertia thingy:D
 
I've been told that on the heavy trucks they cause excessive chatter until you get the truck moving. Ie starting from a dead stop or accelerating from a rolling stop in second. I don't have any personal experience other than to say that I've known a couple of people to change back.
 
I went to the Fidanza and then came back to the oem.

It was too light for normal driving. Really hard to get moving from a stop. It did rev faster but it was terrible in traffic. If your truck is a road racing machine it will work well coming out of corners...but if your intention is to get off the line forget it!

My next clutch will be the Tilton, it has two options: light weight flywheel for road racing (Vipers), and a heavier flywheel for street and drag strip. That should be the proof you need to accept the concept.

Includemeout was the first to provide the opinion that our trucks need the heaviest flywheel we can find...and he was totally correct...inertia is what we need from a flywheel because of the huge weight we have to overcome, and the lack of streamlining.
 
i think the key to being successful with the fidanza on the street is by having 4.88's. i have no issues with traffic. on a flat surface i can just let the clutch out and i'm moving. i never had the fidanza with the 4.10's so i cant comment for those with that setup.
 
mysrt10 said:
i think the key to being successful with the fidanza on the street is by having 4.88's. i have no issues with traffic. on a flat surface i can just let the clutch out and i'm moving. i never had the fidanza with the 4.10's so i cant comment for those with that setup.
Click to expand...
Hmmm, I currently have the stock 4:56's but by the time im ready for a clutch and (possibly a flywheel if needed) i should definatly have some 4.88's.
 
opinions vary.....;)

i've had a fidanza in my truck for the last 10k+ miles & have no issues in traffic - drives great.....:) the lighter flywheel is suppose to help the most @ the track, which is what i got mine for.....
now going to 4.88's from 4.56's, i'm waiting on some real numbers for 1/4 mile times before i go that route.... it looks to be that 4.88's will cause you to shift to 5th gear which will not help your ET's......:( traction will also become more of an issue too, some FI guys prefer 4.10's......:)
 
moparracing said:
opinions vary.....;)

i've had a fidanza in my truck for the last 10k+ miles & have no issues in traffic - drives great.....:) the lighter flywheel is suppose to help the most @ the track, which is what i got mine for.....
now going to 4.88's from 4.56's, i'm waiting on some real numbers for 1/4 mile times before i go that route.... it looks to be that 4.88's will cause you to shift to 5th gear which will not help your ET's......:( traction will also become more of an issue too, some FI guys prefer 4.10's......:)
Click to expand...
Whats the weight on you fidanza flywheel? Do you have a part number by chance?
 
for racing the lighter flywheel will work good. for everyday driving keep the heavy oem flywheel. dont forget the heat and metal issues. light flywheel less metal, less heat to damage it.
 
I had the Fidanza for over 3 years in my truck and loved it. I have an 04 RC but with 4.56 gears. I am trying the Mcleod Twin Disc clutch and they recommended a steel flywheel...so far I went quicker with the Fidanza (12.024 vs 12.27 with twin disc) but that was also Sacramento vs Famoso too. I will be at the May 9th GTG in Sacramento and run the McLeod Twin Disc at Sacramento for the first time.....going for 11.99....Brad you better be there to film that run!!!!!!!!
 
mysrt10 said:
i think the key to being successful with the fidanza on the street is by having 4.88's. i have no issues with traffic. on a flat surface i can just let the clutch out and i'm moving......
Click to expand...

Me too.


Have had the fidanza for 10k miles with no problems. Had it installed when I had 4.10 gears and now with 4.88 gears. No issues, no chatter no problems.

patrick
 
Prof said:
Here is the data on the Tilton...

Stinker can do better on the price I am sure...

https://www.viperspecialtyperforman..._id=2&osCsid=24873749d3efce7dae64a10a309ec91a

I plan to go to this clutch next winter, but with the heavier flywheel...you will see that the write-up talks about the weight of the flywheel.
Click to expand...

**IMPORTANT!***

The standard kit includes a Tilton 12.5 pound flywheel. This flywheel is NOT intended for street use, it is mainly race only, and very limited street use. It will make the car difficult to get moving from a stop, especially up inclines. It will require much more slippage to get moving from a dead stop than a heavier weighted flywheel, effectively killing your clutch life. It requires a much firmer grasp on manual transmission driving techniques to get a smooth shift than an OEM clutch assembly, though it is capable of faster shifting and rev matching. This is the flywheel of choice for road racing.

For ease of street use and MUCH improved clutch life, there is an option below to replace the above light flywheel with a Heavyweight flywheel that was designed by Viper Specialty & Tilton Engineering. This is a VSP Exclusive, and ONLY AVAILABLE HERE. The heavyweight flywheel weighs approximately 45 pounds, which will feel much more streetable. This flywheel retains 80% of the OEM flywheel and pressure plate assemblies MMOI, but with approximately 40% less weight (28 lb. Reduction). This is a wonderful combination as the flywheel will "feel" (Mass Moment Of Inertia) like a heavier flywheel than it actually is. You get the benefits of easy starting from the inertial increase, without the side effect of adding almost 30 pounds to the car. Overall, this option will feel very similar to an aluminum flywheel/OEM pressure plate combination, and also happens to be almost identical to the 2008 Viper flywheel's MMOI, but with about 2.5x the torque capacity.
;) ;) ;)
 
includemeout said:
**IMPORTANT!***

The standard kit includes a Tilton 12.5 pound flywheel. This flywheel is NOT intended for street use, it is mainly race only, and very limited street use. It will make the car difficult to get moving from a stop, especially up inclines. It will require much more slippage to get moving from a dead stop than a heavier weighted flywheel, effectively killing your clutch life. It requires a much firmer grasp on manual transmission driving techniques to get a smooth shift than an OEM clutch assembly, though it is capable of faster shifting and rev matching. This is the flywheel of choice for road racing.

For ease of street use and MUCH improved clutch life, there is an option below to replace the above light flywheel with a Heavyweight flywheel that was designed by Viper Specialty & Tilton Engineering. This is a VSP Exclusive, and ONLY AVAILABLE HERE. The heavyweight flywheel weighs approximately 45 pounds, which will feel much more streetable. This flywheel retains 80% of the OEM flywheel and pressure plate assemblies MMOI, but with approximately 40% less weight (28 lb. Reduction). This is a wonderful combination as the flywheel will "feel" (Mass Moment Of Inertia) like a heavier flywheel than it actually is. You get the benefits of easy starting from the inertial increase, without the side effect of adding almost 30 pounds to the car. Overall, this option will feel very similar to an aluminum flywheel/OEM pressure plate combination, and also happens to be almost identical to the 2008 Viper flywheel's MMOI, but with about 2.5x the torque capacity.
;) ;) ;)
Click to expand...



Includemeout was the first to provide the opinion that our trucks need the heaviest flywheel we can find...and he was totally correct...inertia is what we need from a flywheel because of the huge weight we have to overcome, and the lack of streamlining.[/QUOTE]


The guys with white hair (face or head) know their shit!
 
Prof said:
Includemeout was the first to provide the opinion that our trucks need the heaviest flywheel we can find...and he was totally correct...inertia is what we need from a flywheel because of the huge weight we have to overcome, and the lack of streamlining.
Click to expand...


The guys with white hair (face or head) know their shit![/QUOTE]


Must remember all this info is pertaining to a Viper car ,( much lighter that the trucks) I am still of the opinion that about a 75 lb flywheel would be even more applicable ( for drag racing) on the NA trucks (FI trucks can use a bit lighter due to the horsepower and inherent torque)!!! With a strong enough drive shaft, rear end, and tires that will hold a 5000 rpm launch it will get the heavy beasts out of the gate , but it is he traction issue that has to be addressed to get the full potential of all the stored inertia of the heavey flywheel.
Latter bars anyone:D :D :D
 
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