ECS RA4 conversion clutch kit: power?

[AudiB720TS]

ECS Tuning is selling a single mass lightweight flywheel with B7 RS4 clutch (https://www.ecstuning.com/b-ecs-parts/ra4-conversion-clutch-kit-stage-1/002948ecs01kt/), capable of handling 314ft/lbs of torque

My car currently output 272 ft/lbs of torque at the wheels with stock turbo and on stock clutch.

Question: I add a K04 hybrid and a good tune on this car, is a 314 ft/lbs rated clutch going to be enough? Obviously my stock clutch holds up with current power given my driving style (for how long?), but looking at that number for the ECS kit, I should be close to that already(?) if we account for drivetrain losses (ECS number is "at the crank").

Thanks

[EvolutionArmory]

The RS4 clutch can handle big turbo power. Don’t worry about it.

[b7_Andy]

I know a few people running that stock B7 RS4 clutch on K04’d 2.7s and it holds that kind of power (~380-400 wheel).

[vvenom800tt]

It says its rated at that since thats the stock RS4 power output.

But im sure it'll handle more considering our stock clutches handle stage 2 and 2+ all day long.

Mines at 217k miles on the stock clutch with stage 2 since 145k.

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[AudiB720TS]

Thanks guys.
Just need to find a pile of cash now.


EDIT: looks like the JHM product is cheaper so will go that route.

[aluthman]

That clutch will hold more power than a stock bottom end can...

[EvolutionArmory]

Thanks guys.
Just need to find a pile of cash now.


EDIT: looks like the JHM product is cheaper so will go that route.

Both kits will give you the same power handling but both kits have their pluses and minuses. The JHM kit will have a lighter flywheel with a removable friction liner which is a plus because it’s lighter but a negative is that it will chatter more and has a higher probability of the liner seperating.

The ECS flywheel is a little heavier but is made from steel and is 1 PC instead of 2. This is the main reason I went with the ECS kit over JHM’s kit. I felt it was worth sacrificing a little weight to have a 1pc flywheel made from steel. Plus, the JHM kit was over 900 and the ECS kit was 800.

Just something to think about. Do you want it to be super light and chatter more or less light and chatter less. I’m not trying to sway you in any direction. I’m just telling you what made me decide which way to go when I was in the same position as you last year.

[b7_Andy]

A single mass steel flywheel is going to be way more reliable than an aluminum one too. The less things that are bolted/riveted to the flywheel means the less things that can fly off at 7,000 rpms. Granted JHM makes pretty good parts and I’m sure their flywheel is of good quality, but I’ve always liked the idea of the whole flywheel being one piece of steel. The aluminum one will let the engine rev up uber fast, but I think that’s way too light for a 4 cylinder engine... it’s going to chatter like crazy. A steel one is going to engage much smoother.

[EvolutionArmory]

Actually, I see that JHM offers a steel flywheel for this kit now. I don’t believe that was available when I was looking at clutch options.

[aluthman]

I had a jhm stage 3 clutch prior to my current one and there was zero chatter. I also didn’t notice much difference in how the engine revved.

[AudiB720TS]

I had a jhm stage 3 clutch prior to my current one and there was zero chatter. I also didn’t notice much difference in how the engine revved.

With what flywheel?

[aluthman]

With what flywheel?

Aluminum

[theguysinger]

I have 15k or so on my JHM setup now with 0 complaints. I don’t get any chatter, but I also don’t feel like the engine revs up much faster.

[oVeRdOsE]

I have the ECS RA4 kit and a member here has the JHM, he drove both and at the end said that the ECS got less chatter.

I changed mine at 71 000 miles, and my oem was in great condition. I didn't see any huge improvement, less chatter for sure, but the grip , the rev, the overall feeling is the same as my oem.
But Im only on a stage 2 tune, original turbo, unitronic ( about 265bhp, 295tq)

I should have wait a bit longer before upgrading, but its done, and its working.

[tcopela]

I have the ECS RA4 kit and a member here has the JHM, he drove both and at the end said that the ECS got less chatter.

I changed mine at 71 000 miles, and my oem was in great condition. I didn't see any huge improvement, less chatter for sure, but the grip , the rev, the overall feeling is the same as my oem.
But Im only on a stage 2 tune, original turbo, unitronic ( about 265bhp, 295tq)

I should have wait a bit longer before upgrading, but its done, and its working.

How would you compare the chatter to driving completely stock. Does it get annoying on you ECS RA4 or is it even noticeable?

[oVeRdOsE]

How would you compare the chatter to driving completely stock. Does it get annoying on you ECS RA4 or is it even noticeable?

not much difference honestly. Audis oem clutch are pretty solid on the clutch engagement feeling.

the ecs feel like a bit more on/off without any noise or vibration or slip and more grip, aka less chatter. Pedal feeling is stiffer. Its not annoying at all, makes it more sporty.
The benefit , is really when you drive it hard, the ECS will react like it should since the OEM wont take it.

its not like back in the day, people with 240sx sr20det swaps, and they upgrade clutch with a 6 pucks ceramic that makes the car very hard not to stall from a stop.

My cousin own a stock 2.0t B7, and he confirm that there's not much difference VS a OEM clutch in great shape for DD driving.

[EvolutionArmory]

The ECS RA4 clutch does chatter. It isn’t anything you can hear at idle or anything but if you bog down 2nd gear when you should be in 1st you’ll hear it. And when trying to pass someone in the wrong gear.

I have my car which has the RA4 in it and my wife’s car which has the stock clutch. Every time I drive my car after driving hers I fall in love with this clutch all over again. It’s about perfect for cars 400hp and under.

[oVeRdOsE]

I use a old thread for this question :

- For people with RA4 ECS clutch kit, after about 3000km on it, do you have a something looks like a worn out throw out bearing sound ?

Sound appear when clutch pedal fully pressed and in gear. (like getting ready to get the car slowly out of the garage ).

No I never hold the pedal down for long time, nor doing cutoff launch. Only on/off style.

Sound is louder weeks after weeks, no vibration, car still feel solid. I'm just scared about something loose.
If the throw out bearing is known to be an issue, it will reassure me, since shouldn't be a big deal.

In few week I leave for a 1200 km road trip.

[EvolutionArmory]

I have at least 40k on mine now. No odd noises outside of light flywheel standard stuff.

[oVeRdOsE]

I have at least 40k on mine now. No odd noises outside of light flywheel standard stuff.

thanks .

Even my brother noticed it this weekend.

This is a bummer, I was use to it on my 230 000km clutch on my older car, but not on a 3000km 1200$ cad clutch kit.

[vvenom800tt]

Cant you get an all metal throw out bearing from 034?

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