SMG Pump Failure

[Bashar M.]

It seems that u had a badly misbalanced clutch plate thats why the wear on the inside is great comparing it to the outter edge. and a two peice throw-out bearing is a result of hard, harsh, and explosive driving :)

Yalla man a fresh clutch kit, and there has to be a fresh new style of driving....

[samer110]

Just a friendly advice, if your clutch was in that condition I would hate to see what your flywheel condition is like, so if your flywheel isn't that smooth I recommend to machine it like brake discs if possible without taking rarely anything off it, otherwise if its not machinable then I recommend a new flywheel. An uneven flywheel will cause ur soft launches from 0 very jerky and you will have a jitter because of that.
That was my mistake when I installed the HPF clutch, they looked at my flywheel in *** and said it was fine although there was very minor grooves in it, and now I feel it every time I launch very slow, jitter is there, should have sorted out my flywheel there and then, not worth the labor cost now...

[Bashar M.]

^^^i second samer's advice and make sure they do machine it not just sandpaper it :)

[RAFiK]

I already spoke to shak regarding my flywheel. He said "it is absolutely fine" and they will machine it ... I'll re-check 2mrw morning to see what happened... Gonna keep u guys updated ..

[SewerSideUp]

Good luck bro, and make sure the clutch is 100% aligned.

[Shak]

Some more friendy advice !!!. When was the last time anybody machined a dual mass fly wheel ? Brake disc's I can understand but Dual Mass flywheel !! come on boy's stop cutting corners.Dual Mass flywheel is a complex and very highly balanced component.Read the following and you will understand why.

Dual Mass Flywheel (DMF)
The OEM flywheel found in most modern manual transmissions (as well as semi-automatic transmissions like the Audi/VW DSG and BMW SMG) is classified as a dual-mass flywheel (DMF). The DMF is designed to eliminate engine vibrations before they are transferred to the drivetrain.

A DMF is tuned by the manufacturer to match engine torque and horsepower curves, engine harmonics, and vehicle load dynamics, based on transmission gear ratios as well as overall rolling diameter of the rims and tires. It is constructed by splitting the standard single mass flywheel in half. The primary section bolts to the engine crankshaft and the second section is where the clutch assembly is installed. Contained within the two sections is a complex system of varying rate springs, axle and radial bearings, and lubrication. The two halves are rubber-sealed. The aforementioned series of components is referred to as the friction pack. The main purpose of the friction pack is to absorb vibration, allowing for smooth, comfortable shifting, low speed driveability, and reduced drivetrain noise.

When increasing the horsepower of a vehicle, the DMF can be the weakest link. It is designed with an over-torque friction release. As engine torque is increased, the flywheel has the potential to overload. To protect itself, the flywheel will slip, causing a reduction in torque, protecting the internal springs.

Pros: Reduced noise, smoother shifting, increased fuel economy, longer engine life.
Cons: High replacement cost, can prematurely fail if horsepower and torque are increased, can slip under increased load, 8-11 degrees of movement before clutch engagement.

PS. I did not say I will machine Rifo's fly wheel.There are no marks on the fly wheel surface,but there is excessive movement between the two fly wheels 8-15 deg which means there will be more delay in shifting gears at low speeds.

[Ayham]

True...

Rotating mass balancing is one the toughest sciences, a milligram off a design weight is catastrophic in a rotating mass.

If it's broken, it's just that..

[RAFiK]

Shak will that delay be noticeable ? and how many KMs approx. I need to drive to embed the clutch in ..

[Shak]

Was there much of a delay at low speeds before the clutch failed ?

[RAFiK]

very slight !!

[Ayham]

Was there much of a delay at low speeds before the clutch failed ?

I have a delay sometimes from 3rd to 4th on low RPMs (traffic)

[SewerSideUp]

Is yours machined ?

[RAFiK]

Update!

Just to update you guys....

Clutch is fixed and the car was bled around 5 times. Engine & Transmission mounts were changed as well. Car is running smoothly now, but I'm just waiting to let the clutch embed in the system so I can test drive the gear changes speed..

[Bruno]

Just to update you guys....

Clutch is fixed and the car was bled around 5 times. Engine & Transmission mounts were changed as well. Car is running smoothly now, but I'm just waiting to let the clutch embed in the system so I can test drive the gear changes speed..

a typical rifo :rofl:


:runaway:

[Ayham]

No he has to in this case....