Clutch renewal

[TonyHayers]

Push for it if you can I'd say. If it's coming off the warranty they won't be paying for it themselves anyway.

[supersi]

So I thought I would update you all
I had the full lot done, flywheel clutch, release bearing,new bolts and return pipe
Flywheel and clutch from loba and fitting by Autotechnica, job done was £1600
Clutch feels a little heavier but I guess it may give over time
Loba flywheel was massively lighter than the oem dual mass flywheel and the Andy at Autotechnica said it was a better assembly than the oem.
I am glad I did everything as although the clutch was not slipping it was nearly worn flat and only less than 1mm left on the clutch
Thanks to si from Loba for the free delivery

Well next is brake discs and pads

Glad all is good. Thanks for the order

[sync24]

Loba flywheel was massively lighter than the oem dual mass flywheel

A N00B question: Does the lightened flywheel help the engine speed up and down quicker on the throttle - IE when blipping it?

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Loba flywheel was massively lighter than the oem dual mass flywheel

A N00B question: Does the lightened flywheel help the engine speed up and down quicker on the throttle - IE when blipping it?

In theory yes but you can lose out on some torque.

[supersi]

Loba flywheel was massively lighter than the oem dual mass flywheel

A N00B question: Does the lightened flywheel help the engine speed up and down quicker on the throttle - IE when blipping it?

Yes, faster engine response with faster shifting

Lightened flywheels reduce the amount of energy produced by an engine that's spent in moving its components (parasitic loss). Since flywheels are solid, unsprung components of a vehicle's driveline, a lightweight flywheel will decrease parasitic loss at a constant rate, improving a vehicle's horsepower and torque output (measured after the flywheel) throughout it's entire rev range.

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Loba flywheel was massively lighter than the oem dual mass flywheel

A N00B question: Does the lightened flywheel help the engine speed up and down quicker on the throttle - IE when blipping it?

Yes, faster engine response with faster shifting

Lightened flywheels reduce the amount of energy produced by an engine that's spent in moving its components (parasitic loss). Since flywheels are solid, unsprung components of a vehicle's driveline, a lightweight flywheel will decrease parasitic loss at a constant rate, improving a vehicle's horsepower and torque output (measured after the flywheel) throughout it's entire rev range.

It feels like you've lost low down torque most noticable when pulling away - instead of say 1800 rpm to pull away smoothly you'll need say 2500 (depending on how much you lighten the flywheel. Granted after that and esp at high revs lighter the better.
TBH, the effect is less noticable on the a larger 8 cylinder engine but with a 4 cylinder you're waiting a long time between power strokes and messing with the flywheel can have quite a large impact (I had one that was so light on one car it could barely idle at 1500 rpm... it would hunt between 700 - 2000 and it wasn't due to it being <beep> mapping either
Absolute bitch to drive on the road but did make gearchanges fast and much easier to screw up!)

Light flywheels on modern road cars with electronic throttle control is less important really. The actual gains you'll get a very small and any improvement in throttle response can be also achieved with adjusting the throttle behaviour (depending on how much flexibility you have there in the ECU). this doesn't compromise day to day driving.

As wih most things, theres pro and cons to all.

[supersi]

Understand what your saying on idle with a small cc motor, but not a problem on a 4.2 V8 with such a heavy crank/assembly with LOBA steel fly fitted, it is not too light or extreme. There is reason we have never gone with Alloy flywheels on any platform as others have, we use steel and design where the mass is on rotation as to maintain some mass but still reduce the MMI, only Neg id say is chatter and maybe cost but we feel well placed with with both these.

I raced single cylinder Karts/bikes and we used to loose 80-90% mass off the fly and only at idle was there a negative, but far out weighed by positives.

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I raced single cylinder Karts/bikes and we used to loose 80-90% mass off the fly and only at idle was there a negative, but far out weighed by positives.

Ditto
In fact it was on direct drive two stroke karts I really 'got' flywheels.
On some tracks you had to gear the kart quite long for top speed but on the slower corner it'd big down. Having a slightly heavier flywheel help prevent the kart dying but it's a compromise.

Sigh - quite miss 2 stroke karts. The gearbox ones were simply mental.

[supersi]

I raced single cylinder Karts/bikes and we used to loose 80-90% mass off the fly and only at idle was there a negative, but far out weighed by positives.

Ditto
In fact it was on direct drive two stroke karts I really 'got' flywheels.
On some tracks you had to gear the kart quite long for top speed but on the slower corner it'd big down. Having a slightly heavier flywheel help prevent the kart dying but it's a compromise.

Sigh - quite miss 2 stroke karts. The gearbox ones were simply mental.

Haha miss it too

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I Keep looking at the club 100 pages thinking about a 'quick fix' but just don't have the time <sigh>

[Marten]

So I thought I would update you all
I had the full lot done, flywheel clutch, release bearing,new bolts and return pipe
Flywheel and clutch from loba and fitting by Autotechnica, job done was £1600
Clutch feels a little heavier but I guess it may give over time
Loba flywheel was massively lighter than the oem dual mass flywheel and the Andy at Autotechnica said it was a better assembly than the oem.
I am glad I did everything as although the clutch was not slipping it was nearly worn flat and only less than 1mm left on the clutch
Thanks to si from Loba for the free delivery

Well next is brake discs and pads

Loba kits are quality! I've had one for 3000+ km's now. At first it seemed it was bit heavier than OEM, but over time it has gone lighter. It has very nice feel - much better than old OEM. I wish I'd done it sooner.

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There is reason we have never gone with Alloy flywheels on any platform as others have, we use steel and design where the mass is on rotation as to maintain some mass but still reduce the MMI, only Neg id say is chatter and maybe cost but we feel well placed with with both these.

The other thing is I've found ali flywheels to be... a little fragile for high reving engines. It seems the tolerances are incredibly tight for ali fly wheels and don't like lots of vibration. This was in another engine (fortunately not mine) but I was behind a friends car that flywheel let go (that was the suspicion anyway) and I just wish my track cam was working at the time. The entire back of the car just grenaded itself!
After that steel everytime for me

[JackS4]

So I thought I would update you all
I had the full lot done, flywheel clutch, release bearing,new bolts and return pipe
Flywheel and clutch from loba and fitting by Autotechnica, job done was £1600
Clutch feels a little heavier but I guess it may give over time
Loba flywheel was massively lighter than the oem dual mass flywheel and the Andy at Autotechnica said it was a better assembly than the oem.
I am glad I did everything as although the clutch was not slipping it was nearly worn flat and only less than 1mm left on the clutch
Thanks to si from Loba for the free delivery

Well next is brake discs and pads

Loba kits are quality! I've had one for 3000+ km's now. At first it seemed it was bit heavier than OEM, but over time it has gone lighter. It has very nice feel - much better than old OEM. I wish I'd done it sooner.

Do you get any low rpm "chatter" (metallic tingling noise) with the Loba kit ?

J

[D8vil]

I had to drop my car back off at the grage today with the following symptoms

1. Scraping noise in 1st and 2nd gear and under load but only for a split second
2. Slight clutch burning during normal driving
3. Heavy clutch burning smell during hard driving
4. Slight whining noise from gear box that disappears when clutch pressed

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If to hazard a raw guess I would say flywheel and maybe a worn clutch.