Will Stock clutch slip on Dyno over 260rwkw.. and if so, what will happen?

[sidewaymambo]

HI, Guys

Want to get some idea about clutch issue; my mods will begin next week, it's Td06, ex-manifold, plenum, 550cc injectors, ProfecB Boost(limited @ 12 psi)..usual bits...and expected a fair bit power.

What my concern is the car will be dyno tuned,

1) As my twin plate will not arrive until late that week, so my mechanic "will / may" have to tune my car on stock clutch..just wondering what will be the effect?

2) Will it be too hard to the clutch on dyno?

2) or should I do it after the clutch arrive if time allow? (they are very busy..)

thanks for your input..

[C_DawG]

Generally a clutch will slip when you do hard launches and shifts, putting it on a dyno and slowly accelerating i think it might be ok.

[Doctor]

Not always, You can get more clutch slips in 4th and 5th as load is greater.

With that power I dont think that it will last too long at all but depending on its condition.

[Lozza150]

when the rev's rise and the wheel's dont move much and a lot of grey/black smoke appear's from behind the front wheels and centre of your car.....

it's done.

They (HPI) reckon the stock clutch's can support above 200 .... 260 might be too much though....

[Guest RedLineGTR]

also depends on the condition that it's in the first place but...tyr it out it's more likly to fail on the street with launches rather than on the dyno. Maybe time for a upgrade anyways.

[meggala]

I would tune ti for lower boost first say 10psi then work up if it starts slipping you can leave it but at least the car will be tuned

cheers

[Dr_Drift]

sideway - I may slip with that sort of power if tuned on the dyno in fourth on a slow ramp rate. I've found it's extremely easy to tell if the clutch is slipping while tuning, and hopefully your tuner knows his stuff and if it starts slipping will back off.

As far as the actual tuning process is concerened he should be able to map all the low load map points without any troubles whatsoever.

If your clutch does slip badly while on the dyno the worst problems will be the smoke, the smell, and the possibility of over heating your flywheel and damaging it. I'm assuming your running a new flywheel with your twin plate so i wouldn't worry at all about it....

Let us all know if it holds up or slips

Doc.

[sidewaymambo]

Thanks, guys for all your input..

As I have not done my internal, so I would not try my luck on the boost figures, however I do plan for it in a year or two..

Talking about clutch, will third gear on dyno too hard for the clutch? or slip is regardless to the different gears?

thanks

[Steve]

I had trouble with my stock clutch at under 200rwkw. At first it just seemed the car was a bit sluggish, then she just gave up and although the engine revved the car didnt accelerate much.

On the dyno I still managed to get a basic tune, but as soon as the ph raised above 180rwkw, the curve just flatlined. I do think it will be well worth while holding off until the clutdh arrives, may save having to get it retuned after the new clutch arrives - like I had to do:)