GolfGTIforum.co.uk
Model specific boards => Golf mk4 => Topic started by: Dave_IOW on 20 May 2010, 18:56
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Ok so question to you lot that have g60/VR6 combo.
Have any of you had your flywheels lightened, and if so, by how much?
Did you have it taken of inside/outside/all of the rim at the back, heard different things.
Thanks
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don't bother mate, you won't feel any benefit really
If you want to have a go with my pedal to see what it's like you're welcome to :wink:
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Ok so question to you lot that have g60/VR6 combo.
Have any of you had your flywheels lightened, and if so, by how much?
Did you have it taken of inside/outside/all of the rim at the back, heard different things.
Thanks
i wouldnt mind knowing this tbh, before my lot goes in...i have heard that if you lighten it too much it starts rattling? the flywheel is only 800g less than the dual mass setup (as weighed by patch)
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i wouldnt bother to be honest. iirc lightening the flywheel is to allow it to rev quicker? but lightening it too much could cause juddering. i didnt lighten mine just to be safe
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flywheels are weighted for a reason, and as said, you wont benefit from it. only thing you will notice is it revving quicker while stationary.
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I understand its there for a reason, to smooth everything out, but if we were always happy with what rolled out of the factory, there would be no need to improve?
I thought it allowed it to rev quicker whilst accelerating aswell, although deceleration increased aswell as soon as you let off.
Motorways i think it would be useless as would always be on/off, but on our roads down here you barely get a straight thats longer than half a mile :sad:
Surely if theres less force required to turn it, this would increase acceleration surely?
Wouldnt go mad, weighed in at 9.5kgs and was thinking of going down to 8ish. The person i got it off knows a fair bit and strongly recommended it.
Just thought id ask what you guys thought :smiley:
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don't bother mate, you won't feel any benefit really
If you want to have a go with my pedal to see what it's like you're welcome to :wink:
Haha, tempting :smiley:
Its just can get lightened for free then just need balanced, 40quid ish.
Thought may aswell do it as have it sat here waiting till i buy clutch kit.
Seems like alot of negativity, just want to hear from someone whos actually had it done :undecided:
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As said really not worth it IMO
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just found this http://www.pumaracing.co.uk/FLYWHEEL.htm
Seems convincing :huh:
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just found this http://www.pumaracing.co.uk/FLYWHEEL.htm
Seems convincing :huh:
But will you notice the amount you are going to do it? I doubt it.
Dont forget the G60 is already loads lighter than the DM one.
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just found this http://www.pumaracing.co.uk/FLYWHEEL.htm
Seems convincing :huh:
But will you notice the amount you are going to do it? I doubt it.
Dont forget the G60 is already loads lighter than the DM one.
Less than 800g :wink:
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just found this http://www.pumaracing.co.uk/FLYWHEEL.htm
Seems convincing :huh:
But will you notice the amount you are going to do it? I doubt it.
Dont forget the G60 is already loads lighter than the DM one.
Less than 800g :wink:
Have you done yours then patch? Do you think its worth doing? :smiley:
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just found this http://www.pumaracing.co.uk/FLYWHEEL.htm
Seems convincing :huh:
But will you notice the amount you are going to do it? I doubt it.
Dont forget the G60 is already loads lighter than the DM one.
Less than 800g :wink:
like i said earlier...
Ok so question to you lot that have g60/VR6 combo.
Have any of you had your flywheels lightened, and if so, by how much?
Did you have it taken of inside/outside/all of the rim at the back, heard different things.
Thanks
i wouldnt mind knowing this tbh, before my lot goes in...i have heard that if you lighten it too much it starts rattling? the flywheel is only 800g less than the dual mass setup (as weighed by patch)
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just found this http://www.pumaracing.co.uk/FLYWHEEL.htm
Seems convincing :huh:
But will you notice the amount you are going to do it? I doubt it.
Dont forget the G60 is already loads lighter than the DM one.
Less than 800g :wink:
Have you done yours then patch? Do you think its worth doing? :smiley:
I run a std G60 flywheel,i use my car on a daily bases,not sure anyone could justify lightening a flywheel unless they do track days etc.... Is the SMF conversion worth doing? If you can get the parts cheap enough or your clutch is on it's way out then yes,if not leave it alone and spend your money elsewhere.
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Do you know anyone thats had it lightened patch? If so, how did it affect their acceleration?
Just reading a thread on uk-iv's and you mentioned lightening a fair bit, if your 'patch' on there that is :laugh:
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The lighter the flywheel the better VS Weight needed for keeping engine momentum
I don't know where the perfect balance is.
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As said previously, a lightened flywheel will spin up quicker, particularly noticable when revving and stationary. This then feeds its benefits into when you accelerate as the engine has less rotating mass to shift in order to gain revs which in turn gives you speed. The downside is if you lighten too much then you get reduced momentum so you will tend to lose more revs when changing gear. As with most mods they usually need coupling with other mods to make them effective - so if you fit a quickshift kit then you may gain back what your losing when changing gear but you'll be back where you started before lighteneing.
I have never run a lightened flywheel on my golf but my old mini had one in and these were my observations, of course it will be more noticable and obvious what effect things are having in a car such as a mini (older, simpler, lighter etc) but just thought it was worthwhile mentioning it. TBH i don't think its worth it for the golf - changing form a DM setup to the G60 is good enough IMO :smiley:
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you also need to look at more to get the full benefits, if you lighten the flywheel then you need to get it balanced and in turn have the clutch housing balanced to match and then the crank etc.
On my old car when i rebuilt the bottom end i had all the bottom end lightened and balanced. ou wont get the full benefits just by doing one part
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you also need to look at more to get the full benefits, if you lighten the flywheel then you need to get it balanced and in turn have the clutch housing balanced to match and then the crank etc.
On my old car when i rebuilt the bottom end i had all the bottom end lightened and balanced. ou wont get the full benefits just by doing one part
+1 - go nuts and get everything lightened and balanced, won't be cheap mind :lipsrsealed:
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its pointless spending money having the flywheel balanced up f everything that either bolts to it or it bolts to isnt balanced up aswell.
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its pointless spending money having the flywheel balanced up f everything that either bolts to it or it bolts to isnt balanced up aswell.
thats a bit daft, every thing is balanced. better balanced the rotating parts of an engine are the more efficent and longer lived it'll be. unbalanced flywhell will just strain the crank and main shells as it trys to wobbel
my flywheel is lightend, idel affected no, drivablity affected no. made the car a bit nippyer.
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sorry may have not made myself clear. I know the pparts will already be balanced. but everything will be balanced to suit old set up. I ment get the other parts balanced up to match the new lightened/balanced flywheel.
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Well im going to go ahead with it, can get it lightened free and balanced for 30quid, and for half a tank of fuel its worth a go. Ill let you know results if anyones interested :smiley:
Maybe it wont all be balanced together but surely putting a normal g60 on without lightening, it wouldnt be balanced to crank etc either?
Difference is mine would be lighter and not balanced to the crank/case whereas normal g60 installation would be heavier, not balanced aswell etc?
I have ABF one which weighs 10.5kg think heavier than g60 one anyway as heard thats 9.5kg? Going to take it down to 8kg. Any idea what yours weighs in at danny_p?
Contrary to popular belief it's certainly not necessary, or even always helpful, to balance a flywheel on the crankshaft it's going to be used on except perhaps for extraordinarily high revving and delicate race engines. Unless the flywheel is tightly dowelled to the crank it's going to sit in a slightly different place every time it's fitted anyway. There will always be a small amount of play between the crank spigot the flywheel sits on to centralise it and also between the flywheel bolts and their holes in the flywheel. Now we're only talking a thou or so of possible movement but that's enough to make it pointless trying to achieve any better level of accuracy than by balancing the flywheel on a proper mandrel in its central hole. At least you then know the flywheel itself is in perfect balance and it will run very close to that on any crank it's then fitted to. That's certainly the way all production flywheels are balanced anyway.
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Ok so update, flywheel was ABF one and weighed in at 10.5kg, had this skimmed down to 8kg on mandrel on lathe.
Should be balanced somewhen next week!
(http://i44.photobucket.com/albums/f11/Wellowpartys/29052010213.jpg)
(http://i44.photobucket.com/albums/f11/Wellowpartys/29052010215.jpg)
(http://i44.photobucket.com/albums/f11/Wellowpartys/29052010214.jpg)
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will be interesting to see how this compares to mine...
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will be interesting to see how this compares to mine...
Gotta get the turbo fitted first but yeah :smiley:
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are you fitting it yourself? Or you too scared :grin:
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mine was taken down to 6kg
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Fitting clutch n flywheel but gunna get r-tech to fit turbo maybe.
My agricultural friends are good with the spanners, but are more like the scrapheap challenge contestants than mechanics :laugh: :grin:
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bah get on it, won't take you long :wink:
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Probably true, will still have to venture over to england for map, just save myself some pennies i suppose..
Bought my first house out your way a few months back, finally get to move in on Wednesday so gunna need to save all i can i suppose :sad:
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whereabouts mate?
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Royal exchange :lipsrsealed: :laugh:
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Panestine :grin:
Well if you do fancy giving it a go yourself I'm only down the road for a hand
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Cheers mate, we will see how it goes :afro: