How light to go on flywheel?
20 August 2004, 11:04 PM
#31
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I've got a Helix clutch and Fidanza flywheel on mine, it's superb mate. Good choice there!! Pity my gearbox will be in pieces shortly, I think my centre diff bearing has collapsed, major backlash noises! 
22 August 2004, 05:33 PM
#33
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I would agree there, once the drivetrain is connected (ie. in gear) the l;ight flywheel will make very little difference IMHO..
I fitted a 4.5kg FW on my last WRX, was great if i wated to rev the car in front of my mates
(JOKE) BUT i definately found that the car had more clutch judder and launching the car on Drag was a Pain in the ***, the lack of inertia in the flywheel was to blame IMHO...
Have stuck to the Std Flywheel (std weight) car was launching spot on at the pod last week...
Horses for courses IMO, for drag i reckon the weight should be kept up (maybe not std weight) and for normal road driving maybe go for a lighter one..
I must say, i was suprised after fitting Fuz's flywheel/Clutch that idle was not affected, my idle was sh!te with the 4.5kg FW...
Rob
p.s. Bob if ya dont like it i will charge you again for 2nd fitting
I fitted a 4.5kg FW on my last WRX, was great if i wated to rev the car in front of my mates
(JOKE) BUT i definately found that the car had more clutch judder and launching the car on Drag was a Pain in the ***, the lack of inertia in the flywheel was to blame IMHO...Have stuck to the Std Flywheel (std weight) car was launching spot on at the pod last week...
Horses for courses IMO, for drag i reckon the weight should be kept up (maybe not std weight) and for normal road driving maybe go for a lighter one..
I must say, i was suprised after fitting Fuz's flywheel/Clutch that idle was not affected, my idle was sh!te with the 4.5kg FW...
Rob
p.s. Bob if ya dont like it i will charge you again for 2nd fitting
22 August 2004, 06:24 PM
#34
Thats okay I'll chance it...surely even if you get a few launches wrong the ones you get right must make up for it?
Will probably be there for the second fitting knowing me....would like to see what its like on the car contrary to what I'm being told....fairly backwards hey
Bob
Will probably be there for the second fitting knowing me....would like to see what its like on the car contrary to what I'm being told....fairly backwards hey
Bob
03 September 2004, 11:56 AM
#36
I am using a Fidanza FW. The idle is unchanged but it is a little trickier to get a good start. That being said, the car pulls much stronger through the gears. I was once told that for every 1KG taken off the weight of a flywheel, you'd need to remove 10KG in body weight from the car to get the same effect. My fw is ~ 7KG lighter so I'd need to lose ~70KG in weight from the car (a small adult).
03 September 2004, 12:24 PM
#37
Phil: Out of ten launches how many would you say you could launch spot on....Also out of ten how many with std fly? Dont you have real problems with launch ie a very small window of getting it spot on or otherwise bogging down etc?
Bob
Bob
03 September 2004, 04:30 PM
#40
Originally Posted by BOB'5
Phil: Out of ten launches how many would you say you could launch spot on....Also out of ten how many with std fly? Dont you have real problems with launch ie a very small window of getting it spot on or otherwise bogging down etc?
Bob
Bob
07 September 2004, 03:02 PM
#41
I've found this thread interesting reading - I have to upgrade the clutch in my P1 and am considering fitting the Roger Clark fly wheel at the same time.
I'm a bit concerend however about the loss of engine braking. I tend to do a lot of country lane driving where I ram the car into a lower gear for corners (and find I'm pretty much always in the power band/on boost coming out of the corner as a consequence) rather than drag strip type events. I think I would find it a problem if I lost all engine braking as this is a major part of my driving style - is anyone able to provide some feedback on this?
Thanks!
I'm a bit concerend however about the loss of engine braking. I tend to do a lot of country lane driving where I ram the car into a lower gear for corners (and find I'm pretty much always in the power band/on boost coming out of the corner as a consequence) rather than drag strip type events. I think I would find it a problem if I lost all engine braking as this is a major part of my driving style - is anyone able to provide some feedback on this?
Thanks!
07 September 2004, 10:46 PM
#42
Originally Posted by SVVG
I'm a bit concerend however about the loss of engine braking. I tend to do a lot of country lane driving where I ram the car into a lower gear for corners (and find I'm pretty much always in the power band/on boost coming out of the corner as a consequence) rather than drag strip type events. I think I would find it a problem if I lost all engine braking as this is a major part of my driving style - is anyone able to provide some feedback on this?
Thanks!
Thanks!
. Seriously, I suggest you modify your driving style as you will become much quicker from point to point.
08 September 2004, 12:22 PM
#43
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i'm currently running the fidanza 4.3kg
i have the same experience as harvey with the fidanza.
at the strip it's just %$%##.
Car stall's in 1st. I've tried to start with 5k rev and clutch dump until 6.5k rev.
car still stall's. You need a oe flywheel for good and simple starts.
I'm now waiting for an STI 6 speed box which come's wit an STI flywheel.
I think this is the best option and will get back on this once i've got it fitted.
I believe the STI flywheel is 6.5 kg. That's (i hope) the best way to go.
i have the same experience as harvey with the fidanza.
at the strip it's just %$%##.
Car stall's in 1st. I've tried to start with 5k rev and clutch dump until 6.5k rev.
car still stall's. You need a oe flywheel for good and simple starts.
I'm now waiting for an STI 6 speed box which come's wit an STI flywheel.
I think this is the best option and will get back on this once i've got it fitted.
I believe the STI flywheel is 6.5 kg. That's (i hope) the best way to go.
21 January 2009, 08:56 AM
#45
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Morning, apologises for the slight thread hijack. How do you spot a knackered flywheel?
My Forester has started shaking violently on the motorway as soon as I go over 60mph. Dip the clutch in- immediately the shaking stops, lift and it returns (Ive balanced wheels etc already).
Many thanks. Ps. How much are they to replace roughly? (non-turbo)
My Forester has started shaking violently on the motorway as soon as I go over 60mph. Dip the clutch in- immediately the shaking stops, lift and it returns (Ive balanced wheels etc already).
Many thanks. Ps. How much are they to replace roughly? (non-turbo)
21 January 2009, 06:01 PM
#47
Brings back some memories.
I ended up going with a 4.3kg one and used it ALOT on the drag strip with great results (still fitted to the car today).
My experience was in the contrary to the advise given in this thread regarding not noticing a difference and making launches hard.
21 January 2009, 08:10 PM
#49
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hmmm good resurection of a thread,having zens 5.4kg flywheel fitted with helix clutch in a couple of weeks,have been asking myself if this would be a good combination any one had this done?....any problems? anyone know how much a new rear main oil seal is(may as well go the whole hog whilst the box is out),anyone know if flywheel bolts have to be replaced?
22 January 2009, 10:30 AM
#51
Well.... nearly 5 years on....!!!! and I soon, after my original post, had an RCM light flywheel (not sure what weight it is, but thought it was 4.3KG?) and engine pulleys fitted. Not noticeable re loss of engine braking whatsoever (which was my original concern....) - car is really responsive, and Olly as always, was spot on with his recommendation. Still really easy to pootle about town and doesn't require loads of revs to pull away or anything. With remap it's running about 335 ish BHP and 333 Ft/Lb according to mapping guestimate on Bob Rawle's lap top (had it tweaked again after the lightedened fly wheel and pulleys as was overboosting a bit due to loss of weight on flywheel).
24 January 2009, 01:03 PM
#54
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The sort of thing you go to a specialist for.
RCMS or ZEN or API to name a few....
I've used Subaru4u but so far, only for servicing and O2 diagnosis and replacement.
As always, get advice and quotes and go with what feels right for you.
J.
24 January 2009, 01:04 PM
#55
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Morning, apologises for the slight thread hijack. How do you spot a knackered flywheel?
My Forester has started shaking violently on the motorway as soon as I go over 60mph. Dip the clutch in- immediately the shaking stops, lift and it returns (Ive balanced wheels etc already).
Many thanks. Ps. How much are they to replace roughly? (non-turbo)
My Forester has started shaking violently on the motorway as soon as I go over 60mph. Dip the clutch in- immediately the shaking stops, lift and it returns (Ive balanced wheels etc already).
Many thanks. Ps. How much are they to replace roughly? (non-turbo)
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