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SLED GUITARIST
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Flywheel abuse?
What would cause these marks. New clutch job performed at professional shop lasted @45,000 mile.
 
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1988 944S Guards Red---Hers FRWilks Chip, MSD Blaster 2 1987 944S Blue Diamond Mine Crankscapper, MSD Blaster 2 Coil, Weltmeister Race chip, Sports pack. Hit by a sleeping driver at 2pm, soon to be the Black and Tan 1985 944na Gray---His Eibach Gound Control Struts/Koni Rear, Throttle Response cam. SOLD 
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12-24-2014, 01:57 PM
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Location: O.C. CA
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looks to me like somebody doesn't know how to get their foot off the clutch pedal
also looks like there may have been a leaking rear main seal |
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12-24-2014, 03:06 PM
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Posts: 800
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will a flywheel form cementite like a brake rotor?
does the disc look like it had brake fluid on it? |
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12-24-2014, 05:10 PM
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SLED GUITARIST
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Zero leak on the main. Friction disc was warn to the revits. Not sure if the wife leaves her foot on the clutch. The marks are deep indentions.
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1988 944S Guards Red---Hers FRWilks Chip, MSD Blaster 2 1987 944S Blue Diamond Mine Crankscapper, MSD Blaster 2 Coil, Weltmeister Race chip, Sports pack. Hit by a sleeping driver at 2pm, soon to be the Black and Tan 1985 944na Gray---His Eibach Gound Control Struts/Koni Rear, Throttle Response cam. SOLD
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12-24-2014, 06:00 PM
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Location: O.C. CA
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either she leaves the foot on it, or takes a long time slipping it and releasing. i know a local guy that i am constantly yelling at to let the clutch out. he slips that thing a long time. in comparison, coming from british gearboxes, and more specifically british hydraulics, i learned how to work without a clutch, so i barely use it.
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12-25-2014, 09:55 AM
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I have only known two women that didn't make me cringe with the way they handled a clutch. Thankfully one of them is my wife
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Red 84 w/25,xxx miles Stone Gray 89 S2 w/90,xxx miles |
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12-25-2014, 02:51 PM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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wow. cools pics on what not to do. let us know if you figure out where it went wrong.
flash, how does one shift without the clutch? i'd love to learn that trick.
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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12-27-2014, 08:22 AM
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The art of Shifting
To shift without the clutch you match the RPM of the engine with the RPM of the transmission input shaft so the gears mesh smoothly. If you want to do it by the numbers, note the RPM difference between gears and try to match it, but usually one just does it from a seat-of-the-pants feel. You do need the clutch to start up from a stop in first gear (unless you are on a downhill slope or someone pushes you).
See this guy's YouTube: https://www.youtube.com/watch?v=jLw0hAtOik4 When the rubber-centered clutch disk (what idiot designed that?) went ballistic driving around Mt. Rainier in 1994 I got an opportunity to practice this on the 150 mile drive home.
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1988 Silver 924-S Original owner Porsche 924S: The 944's cheaper, faster little sister. 
Last edited by 88Silver924S; 12-27-2014 at 11:08 AM.. |
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12-27-2014, 11:03 AM
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I go clutchless on rental cars in Mexico.
It would be best to replace the flywheel. Blanchard grinding will clean it up but the judder will return. |
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12-27-2014, 11:09 AM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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Quote:
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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12-27-2014, 07:48 PM
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lol - yeah - not a skill i ever wanted to develop. just had to.
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12-27-2014, 08:06 PM
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I too have driven a variety of cars without using the clutch but only as an emergency measure (snapped cable or bad hydraulics) - shifting without using clutch wears the synchros in the trans - I would not recommend it as a way to drive car daily
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84 928 S - SOLD 2012 Cayenne S |
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12-28-2014, 09:20 AM
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agreed. on the opposite side of that, i see people using too much clutch engagement quite often. the higher you go in gears, the less you need the clutch, due to the closer rpms. i barely move the pedal from 3rd through 6th. it's really just enough to release it and switch gears. no need to go to the floor, or anywhere near it.
i think the worst thing i see is somebody riding the clutch in traffic, slipping it in and out in and out. that really tears things up in a hurry. if they left themselves just a bit more space between cars, they could stay in gear and just moderate the throttle. |
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12-28-2014, 09:45 AM
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When I am drag racing (or impressing the ladies) I use just enough clutch so the gear shift pops out of gear and smoothly engages the next gear. Light pressure on the gearshift as you disengage the clutch and it will pop out of gear. Then a little more clutch and it smoothly engages the next gear. A little bit more clutch is needed for the engagement of the higher gear (grind) than for the disengagement of the lower gear.
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12-28-2014, 10:30 AM
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RED
GRAY
Mine
Flashback
