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Old 01-03-2003, 08:35 PM   #1
Bumsarama
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Default Fidanza Flywheel?

Since the Fidanze Flywheel weighs 9.8lbs, is that too light to go? Will I notice a difference between this one and the other aftermarket flywheels which are usually around 12-13lbs? Is there a quality difference also? I am really interested in purchasing the Fidanza one and will appreciate any feedback.
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Old 01-03-2003, 09:03 PM   #2
aj's25rs
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i have a act/fidanza in my99. it allows you to rev up faster but its downfall is you have to keep the revs up. i mean if you normally take off from a stop at 900rpms then you would have to bring them up to like 1000rpms or a little higher. you also have to rev match on down shifts. once you drive past the break in point youll be fine. just takes alittle to get used too.
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Old 01-04-2003, 05:31 PM   #3
Santo Domingo 2.5 RS
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I have cluthcmaster stage 3 and fidanza, what aj's25rs said is completely true. Also i lost a lot of top end power since the flywheel went in, I think it is in fact too light, but now i am paying the price.

My car revs really fast up to third gear, but just after i hit fourth or even in third I start loosing power and yuo notice the car is not advancing the same way. Even when i drag or street race someone, people that i used to be able to hold up to after fouth gear, pull away from me a lot faster than they used too. But also the car is hell a lot faster in the first tree gears.

P.S
I also have N1 light weight pulleys, wich i am planning to replace for the stock ones in the next week, to see if i can feel any difference
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Old 01-04-2003, 06:01 PM   #4
watcher in the sky
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so i wonder how much hp it would take to correct that loss of topend power? sure 40 more would do, but i wonder how little hp you could add to regain?
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Old 01-04-2003, 06:44 PM   #5
HndaTch627
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ummm, i lost no top end, my top end is stronger then it's ever been, you lose bottom end torque but gain HP.

Jeremy
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Old 01-05-2003, 02:25 AM   #6
Santo Domingo 2.5 RS
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I dont know, maybe it is because the flywheel is so light, and I also have light weight pulleys. I will remove these next week and replace them for the stock ones to see what results do I get
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Old 01-05-2003, 02:59 AM   #7
Patrick Olsen
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The only possible effect of a lightened flywheel (or aluminum flywheel) is that the engine will rev more freely. I don't understand how a lighter flywheel could possibly cost you top end power.

I have a Fidanza flywheel on my car along with a Clutchmasters Stage 1 clutch. It pulls strong to redline, both by the butt dyno and based on actual chassis dyno pulls.

I stalled the car the very first time I went to put it in motion after having the clutch and flywheel installed - a combination of the grippier clutch and lighter flywheel, I'm sure. That's the only time I've ever had a problem. I honestly haven't noticed that I need to use more revs to get the car rolling.

I have noticed that it's a lot tougher to cruise slowly at low RPMs - like when you're creeping along in 1st gear in traffic. With the stock setup I could get down to 800-1000rpm if I was real gentle with the gas pedal. Now I can't get down below about 1200rpm or so before the car will start bucking - the engine is more responsive to throttle input and it just gets too hard to finely control the gas. I think the effect is compounded by the fact I have pretty extensive engine mods - I think the ECU has a hard time handling the added air flow with the throttle barely open, but that's just a semi-educated guess.

Pat Olsen
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Old 01-05-2003, 05:06 AM   #8
HndaTch627
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pat to be honest i think they think it's slower because they are using the powerband to 6250 more since it's much easier to get to, for an RS w/o cams revving to redline is useless i shift by 6k because well anything above that is just crappy, the cams are screaming for dear life in a SOHC car.

Definitely no top end loss here.

jeremy

p.s.: Fidanza 9.6lb flywheel w/ ACT street clutch
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Old 01-05-2003, 05:08 AM   #9
HndaTch627
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Quote:
Originally posted by Patrick Olsen


I have noticed that it's a lot tougher to cruise slowly at low RPMs - like when you're creeping along in 1st gear in traffic. With the stock setup I could get down to 800-1000rpm if I was real gentle with the gas pedal. Now I can't get down below about 1200rpm or so before the car will start bucking - the engine is more responsive to throttle input and it just gets too hard to finely control the gas. I think the effect is compounded by the fact I have pretty extensive engine mods - I think the ECU has a hard time handling the added air flow with the throttle barely open, but that's just a semi-educated guess.

Pat Olsen
'97 Legacy 2.5GT sedan
oh yeah and BTW i am 100% with ya on that one, a hard to drive smoothly car becomes even MORE hard to drive smoothly

Jeremy
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Old 01-05-2003, 04:16 PM   #10
watcher in the sky
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I kinda thought that momentum loss would be a factor, if you didnt rev match. because the rpm's would drop off faster and therefor, if you are not shifting properly, you would lose ground in the higher gears...right? atleast moreso than a stock set up.
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Old 01-06-2003, 01:18 AM   #11
HndaTch627
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Quote:
Originally posted by watcher in the sky
I kinda thought that momentum loss would be a factor, if you didnt rev match. because the rpm's would drop off faster and therefor, if you are not shifting properly, you would lose ground in the higher gears...right? atleast moreso than a stock set up.
no, when you up-shift you aren't losing momentum.

Jeremy
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Old 01-06-2003, 11:58 AM   #12
watcher in the sky
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I am talking about the flywheel, and how it would lose momentum.
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