Originally posted by Allegiance
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PARTS where to get these: Clutch and pressure plate upgrade maybe lightened flywheel
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RE: the chatter.
I'm sure I have overly sensitive ears, but it's definitely audible - both when the car is idling, and when it's being pushed hard.
My setup is the ES125 ECS Stage 1 14LBs kit, and Redline MT90 fluid. I'll see if I can get a video this arvo - it's only properly audible and annoying when the car is hot and has been driven. I wasn't able to be sure whether it was the flywheel or the ECS-branded bearing, so I'm having both changed...
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Group buy, you will pay heaps in import taxes etc. Need to keep it under $1000, maybe order 2 at a timeOriginally posted by Polo GTEye N9 View PostGreat idea Allegiance.
How many Polos with stuffed clutches are there are out?
If Jimmy recommends the ECS Stage 1 kit it has to good.
How many ready to commit to a group buy?MODS- TOO MANY
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I agree - lightened flywheels will generally chatter. If you want a refined drive, stick with DMF or with heavier solid one. DMF obviously was built for that reason - for refinement. Like csimpson said - as the car gets hotter, with lots of traffic or after enthusiastic drive, it gets slightly noisier. This is normal. I have VW genuine bearings. With AC on at traffic lights - you will be running like a diesel. And if you have an engine mount - you will feel it.06 Polo GTI - REVO Stage 2 = 140kw @ wheels.
06 Golf GTI - Bluefin Stage 1 blacked out with ED30 theme, leather, xenon, etc.
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The chatter is in the gearbox , run low on oil or have burnt oil your going to get more chatter . if it really is that bad then fill the gearbox with redline shockproof . Ive done a 1.9TDI and they werent complaining of excessive chatter .Originally posted by noone View PostThis is not something I'm familiar with, so bear with me.
Are you saying you don't hear the chatter with the 14 lbs flywheels?
If your serious on a group buy Ive ordered 5 already but if we get 10 I can do them for $495 shipped each . I retail them for $550 normally .Bug_racer supports the rebellion of the euro revolution
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Just for reference, regarding why DMF's are used...
It's the high power output of small engines; e.g. 170PS from 2.0 litres. As the crank turns every piston has to compress a huge amount of air forced in by high turbo pressure - which slow it's rotation speed markedly - and then it's spun forwards by a massive surge from the combustion of that charge.
This rapid slowing and acceleration of the crank's rotation causes an engine to rock on it's mounts and would vibrate the whole car unless you smoothed it with a very heavy flywheel.
The two-part DMF allows the crank to move independently of the clutch and smooths out the pulses that way for much less weight - while it lasts....
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It's the two mass bit that's important. The springing between the two parts of the flywheel effectively isolates the transmission from the torsional oscillations of the crank which Screwloose has described. The main function of the DMF is to improve noise vibration and harshness.
One of the problems of engine design, particularly diesel engine design is dealing with the torsional oscillations of the crank. These vibrations can actually build up in magnitude and twist the crank so far that the stress produced by the vibration is actually damaging to the crank. Left completely unchecked, a snapped crank is the likely outcome. Typically, the stress would be highest at the change in section at the edge of the main bearings, and if there's poor detail geometry, and/or poor (tensile) residual stress in the crank surface, then it's likely that a fatigue crack will initiate there, and then grow a little during each vibration cycle until the crank snaps. Great fun!
Via the DMF, the crank will "see" an effective mass, and an effective stiffness looking into the transmission. If you do away with the DMF, the mass and stiffness which the crank drives will change, and the way the crank vibrates will change. Someone somewhere should have done some sums to make sure that the solid flywheels will not upset the dynamics too much - it seems that these sums either haven't been done, or have been done badly.
Pretty sweet animation that visualises the above...
Last edited by s4mmie; 04-08-2012, 05:32 PM.
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Yep so there is the answer for the chatter, and it isnt that bad, as mentioned well lost count but have fotted plenty and have i know some have done at least 60K+ with zero issue. Ive done a Golf lately that went the heavier flywheel, all good too, dont make the mistale of not using a sprung clutch, so thats why these guys make a kit, it is for a Golf 1.8T but thats what you have really with some basic differnces( in the timing belt area and of course the AGU is heaps stronger internally, but thats anther topic that has been super exhausted)
The kit is good and gives you factory feel, ive fitted a few perfomance kits non ECS and have been good to enhance your left quads, hams and calves. Still these clutches were bloody good, depends what you want, done a few Kevlar ones too.
Ac on at the lights is when you will hear it , ive done Redline on a few, i would recommmend MTL and its does dampen it heaps, enjoy your spool up, cheaper clutch replacement, your factory feel and turn up the Balearic sounds and enjoy your car.
Laters
JmacLast edited by Jmac; 04-08-2012, 06:20 PM.Alba European
Service, Diagnostics and repairs. Mobile Diag available on request
Audi/VW/Porsche Factory trained tech 25+ yrs exp
For people who value experience call 0423965341
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Thanks BR for the offer, see if this tread populates with interest.
Great animation, I had no idea what the point was until I saw the spring move, very clever. thanks Greg
Jmac, thanks for detailing your first hand experience on Pogs and VW's. Champ.Last edited by noone; 04-08-2012, 11:34 PM.
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Jimmy has a lot of experience doing these clutches and very welcome commentry and facts on the subject.
As suggested gearbox oil change with Redline MTL oil, which of these would be suitable? MTL 70W80 GL4 Gearbox and are these an option?
MT 90 75W90 Gearbox, MT 85 75W85 Gearbox.Last edited by Polo GTEye N9; 07-08-2012, 08:10 PM.
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MTL 70W80 is what you want mate. Buy it from PerformanceLub.com for a steal.Originally posted by Polo GTEye N9 View PostJimmy a lot of experience doing these clutches and very welcome commentry and facts on the subject.
As suggested gearbox oil change with Redline MTL oil, which of these would be suitable? MTL 70W80 GL4 Gearbox and are these an option?
MT 90 75W90 Gearbox, MT 85 75W85 Gearbox.
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