[Simo]

Hi,

My clutch slips occasionally. Is it worth putting it on a rolling road to see what power it makes? It slips a bit at about 3000rpm and then grips and goes.

I know it will give a graph with a slight dip but it will still give peak bhp and torque right? Don't want to waste money on a rolling road session if it's not worth it.

Chris

 

[CHRIS-ST250]

I think you'd get your peak bhp ok but the torque would be lower as the clutch will slip at max torque

 

[Simo]

Yeah that's what I would have thought. Wish I had 900 quid spare for the RS clutch...

 

[stevie g]

QUOTE(Simo @ 30 Dec 2009, 09:32 AM) <{POST_SNAPBACK}>Wish I had 900 quid spare for the RS clutch...

That makes 2 of us dude...i get terrible clutch slip

 

[shug1986]

are you guys sure its not wheel spin and you might just be thinking its the clutch ?

 

[Simo]

QUOTE(shug1986 @ 30 Dec 2009, 11:02 AM) <{POST_SNAPBACK}>are you guys sure its not wheel spin and you might just be thinking its the clutch ?

At 30mph in 5th in the dry? No mate

 

[shug1986]

i guess so at that lol , sounds pretty bad , what power is it ment to putting out , and how many miles mate ?

 

[Simo]

QUOTE(shug1986 @ 30 Dec 2009, 11:14 AM) <{POST_SNAPBACK}>i guess so at that lol , sounds pretty bad , what power is it ment to putting out , and how many miles mate ?

Apparently about 300bhp. Think there's about 22000 miles on the clock and I've owned the car from new. It doesn't slip on the standard map. it's just the uprated maps.

I use the gears now when driving and I don't rely on the torque i.e. if I want to overtake quickly I will drop a gear or two and not just floor it in whatever gear I'm in at the time. Seems to be working to be honest

Having never been to a rolling road I'd imagine that they set off in 1st then get into 3rd and floor it. May cause problems with slipping but I have no idea...

 

[shug1986]

same with mine owened from new just over 20,000 i get the odd slip in fourth if doing lower speed , mine is 300+ to
hope mine does not go like that but i will get the uprated clutch flywheel and get the quaife diff fitted if it happens , a bit of money but you may as well get it all done when your in there , it should get my 1/4 mile time down below 13s if its done

 

[Rick]

what year is your car? There has been loads of posts about 2007 cars running DS that have slipping clutch in the colder weather, i remember it all last year. My suggestion, change the map, either to a lower powered DS one, or to a different brand all together, my hunch is the slipping will stop.

 

[troy45]

You may get away with running a different map?

I used to get partial slip like yours when running DSCI but it was always ok on Mod B and Mod B+.

Seem to think the dyno runs are usually done in 4th?

 

[Rick]

yeah Ric Woods (which is where we are going) does the power runs in 4th

 

[Simo]

It slipped a bit on DSCi and it slips on Mod C. Think Mod B or B+ will help then?

Chris

EDIT: It was registered in July 2007

 

[shug1986]

is a 2008 57 plate pre-facelift mine has round about 400,ft lb of torque and does not really slip but my map is custom not the ds/blufin ect so maybe its something to do with that or just differnt driving styles

 

[Rick]

its the DS map im sorry to say, mine ran with over 400ft/lb on the WR330 map with shed loads of torque and power for ages, and the clutch was never a problem, not even once, and it was used properly with 0-60 and track work.

My honest advise is run a different map or change the clutch, mine is a 55 plate and they are known to have a heavier duty clutch, ford made the clutch softer on the later cars because of customer feedback, too many people saying the clutch pedal was too heavy

 

[shug1986]

QUOTE(Focus_ASBO @ 30 Dec 2009, 11:50 AM) <{POST_SNAPBACK}>its the DS map im sorry to say, mine ran with over 400ft/lb on the WR330 map with shed loads of torque and power for ages, and the clutch was never a problem, not even once, and it was used properly with 0-60 and track work.

My honest advise is run a different map or change the clutch, mine is a 55 plate and they are known to have a heavier duty clutch, ford made the clutch softer on the later cars because of customer feedback, too many people saying the clutch pedal was too heavy

have you run 1/4 mile times , if so what time and what power was the car running ? is the diff worth it ?

 

[Simo]

QUOTE(Focus_ASBO @ 30 Dec 2009, 11:50 AM) <{POST_SNAPBACK}>ford made the clutch softer on the later cars because of customer feedback, too many people saying the clutch pedal was too heavy

Yeah I can imagine that the pedal would give your left leg a real workout on a mass produced Ford Focus

 

[troy45]

Generally, from my experience it seemed to be the maps which come in higher up the rev range which brought clutch slip on - I never had an issue with Bluefin stage 3 or 3+ (I know Bluefin cars do get the issue tho) or Mod B & Mod B+. Only ever with DSCI. I never tried Mod C till the new motor went in so can't really comment there but running it now and it feels like DSCI but stronger too. I could accelrate from low speeds in any gear with Mod B+ or Bluefin Stge 3+ giving that instant torque delivery with no clutch issues. I felt the CR map in Gary's car gve similar power delivery when I've driven that so again I could see the CR being easier on the clutch for a while at least, I know of course that the slipping clutch can happen pretty much on all tuners mapped cars.

Give Mod B or Mod B+ a try i'd say, can't hurt.

 

[troy45]

QUOTE(Simo @ 30 Dec 2009, 11:54 AM) <{POST_SNAPBACK}>Yeah I can imagine that the pedal would give your left leg a real workout on a mass produced Ford Focus

If it's giving them enough customer dis-satisfaction in surveys and warranty then they would consider changing things like this depending on how much it costs, JD Powers points etc. Remember too the same set-up is used in other cars too so if the change is needed for Mondeo or C30 then ST gets it too. Being mass-produced doesn't mean they get it right first time by a long way, usually means it takes even longer for the fix to be developed, tested, approved, and eventually timed into production.