slipping clutch

ytsohptwhere · 04-24-2008, 12:46 PM

Could someone explain to me what it is ment by the clutch "Slipping." This is my 1st manual car and I just want to know what to lookout for. Thanks!

renns · 04-24-2008, 12:58 PM

Typically it would mean that if you put load on it in a higher gear, the revs would climb and your speed would remain stationary.

The clutch disc spins on the flywheel because it can no longer hold the torque is what actually happens.

polyol · 04-24-2008, 07:01 PM

Put your car into 6th gear @ 60mph and floor the gas...if your revs skyrocket then your clutch is slipping.

**Turninconcepts.com** · 04-24-2008, 07:12 PM

Here's how it works.

on the crank you have a flywheel. The outter surface on the flywheel is machined so that it looks like a brake rotor.

On the tranny input shaft you have the pressure plate. This also has a rotor like surface on it, but also has the diaphram spring (really just a bunch of finger shaped springs arranged in a circle). the spring is what allow the pressure plate to to move in toward the flywheel.

Now, just like your brakes metal on metal contact is bad so you need a friction surface. On your brakes the pads to a really good job of this. In the case of a clutch think of it as a two sided brake pad with pad material on both sides (you have two rotors remember) and shaped like a doughnut. this gets clamped between the flywheel and pressure plate when you release the clutch pedal.

Just like brake pads things wear out over time, and just like brake pads they will wear faster the harder you are on them.

When a clutch slips it means one of the metal surfaces (usually flywheel side) is slipping on the face of the clutch disk (the doughnut).

the end result is an engine that revs without spinning the input shaft of the transmission as well as it should.

What you will see in the car is a jump in RPMs, but no surge forward. it will start in the higher gears, and as it wears out even more will start to slip in the lower gears.

ytsohptwhere · 04-24-2008, 09:22 PM

I will try that 60mph 6th gear thing tomorrow. I dont know if this is related or not, but I have a sensor box that bolts into the dash like a CD player Link here Psi3 - ECU Data Monitors. - Subaru Single DIN LCD Data Monitor

When I am in 5th or 6th gear and I stomp on the gas, I get a High Boost Pressure warning. Should I worry about that?

04-24-2008, 12:46 PM	#1
ytsohptwhere Silver Member Car: WR Blue 04 WRX STi Fav Mod: 'STi' Licence Plate! w00t w00t Location: Ellensburg Washington Posts: 416 Join Date: Feb 2008 Trader Rating: (0)	slipping clutch Could someone explain to me what it is ment by the clutch "Slipping." This is my 1st manual car and I just want to know what to lookout for. Thanks! This ad is not endorsed by this member. Please register or login to hide this ad.

04-24-2008, 12:58 PM	#2
renns Silver Member Car: 04 JBP STi Fav Mod: I do meth... Location: NJ Posts: 437 Join Date: Nov 2007 Trader Rating: (4)	Re: slipping clutch Typically it would mean that if you put load on it in a higher gear, the revs would climb and your speed would remain stationary. The clutch disc spins on the flywheel because it can no longer hold the torque is what actually happens.

04-24-2008, 07:01 PM	#3
polyol Spec C Club Car: 04 STi Fav Mod: Motor Mounts Location: Eugene Posts: 2,263 Join Date: Oct 2004 Trader Rating: (0)	Re: slipping clutch Put your car into 6th gear @ 60mph and floor the gas...if your revs skyrocket then your clutch is slipping.

04-24-2008, 07:12 PM	#4
Turninconcepts.com Authorized Vendor Car: 04/08STI 95SVX 86E30 Posts: 5,034 Join Date: Jul 2003 Trader Rating: (53)	Re: slipping clutch Here's how it works. on the crank you have a flywheel. The outter surface on the flywheel is machined so that it looks like a brake rotor. On the tranny input shaft you have the pressure plate. This also has a rotor like surface on it, but also has the diaphram spring (really just a bunch of finger shaped springs arranged in a circle). the spring is what allow the pressure plate to to move in toward the flywheel. Now, just like your brakes metal on metal contact is bad so you need a friction surface. On your brakes the pads to a really good job of this. In the case of a clutch think of it as a two sided brake pad with pad material on both sides (you have two rotors remember) and shaped like a doughnut. this gets clamped between the flywheel and pressure plate when you release the clutch pedal. Just like brake pads things wear out over time, and just like brake pads they will wear faster the harder you are on them. When a clutch slips it means one of the metal surfaces (usually flywheel side) is slipping on the face of the clutch disk (the doughnut). the end result is an engine that revs without spinning the input shaft of the transmission as well as it should. What you will see in the car is a jump in RPMs, but no surge forward. it will start in the higher gears, and as it wears out even more will start to slip in the lower gears.

04-24-2008, 09:22 PM	#5
ytsohptwhere Silver Member Car: WR Blue 04 WRX STi Fav Mod: 'STi' Licence Plate! w00t w00t Location: Ellensburg Washington Posts: 416 Join Date: Feb 2008 Trader Rating: (0)	Re: slipping clutch I will try that 60mph 6th gear thing tomorrow. I dont know if this is related or not, but I have a sensor box that bolts into the dash like a CD player Link here Psi3 - ECU Data Monitors. - Subaru Single DIN LCD Data Monitor When I am in 5th or 6th gear and I stomp on the gas, I get a High Boost Pressure warning. Should I worry about that? This ad is not endorsed by this member. Please register or login to hide this ad.