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EFV-8 Club Forum / General Ford Discussion / Clutch "PUZZLER"

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Posted By Discussion Topic: Clutch "PUZZLER" -- page: 1 2     MTLott 02-07-2010 @ 5:34 PM reply profile send p.m. Member Posts: 38 Joined: Oct 2009 Great advice, but I don't need it now. Where were you, too, when I first asked for help. No more "test questions?" You sure don't have to worry about that. Stroker 02-07-2010 @ 4:17 PM reply profile send p.m. Senior Posts: 1460 Joined: Oct 2009 First off, anyone who would install a diaphram clutch in place of a readily available semi-centrifugal Long or Borg & Beck is courting problems, and should be annoyed at whomever gave that advice in the first place. Second, this is not a social networking site where we take time out of our lives just to bond with motorheads. Third, I think you got answers that however mis-guided they might have been, were honest attempts to identify the problem. Please, no more "test questions". We have enough problems just trying to keep our old iron on the road without playing games. MTLott 02-07-2010 @ 2:14 PM reply profile send p.m. Member Posts: 38 Joined: Oct 2009 If you follow the posts, I did ask the question earlier and what I got was vague and incorrect answers. By posting I admitted that I needed help which was far from trying to "show how much I know" ... in fact, some knew the answer but didn't offer any help when I first asked, like trjford8. That's fine. After I pulled the transmission and found the problem I thought someone might be as amazed as I was at the cause of the problem. And, I thought it might be somewhat entertaining ... and constructive. That annoys you. If you somehow view my recent post as something other than trying to share a problem with others, searching for answers and then reporting back with my findings, you certainly misunderstand my intent. If arguing annoys you, why did YOU bother to post? Evidently you want to get in your two cents. It would have been more helpful to me if you had offered an answer to my original questions about the diaphragm clutch. Either you didn't know or you weren't willing to help. Maybe there are one or two people who actually have benefited from the problem/cause I just encountered. Maybe they are not annoyed. deuce_roadster 02-07-2010 @ 1:17 PM reply profile send p.m. Member Posts: 284 Joined: Oct 2009 What I find annoying is people who ask "questions" they already know the answer to in an attempt to show how much they think they "know". Then they argue with you when you answer. Unless you have something constructive--don't post this kind of BS. MTLott 02-07-2010 @ 12:44 PM reply profile send p.m. Member Posts: 38 Joined: Oct 2009 Normally when people are wrong they either admit it or simply stop posting on a thread. Worst thing someone can do is try to BS their way out of it. supereal 02-07-2010 @ 12:25 PM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 We see the diaphragm clutch in Ford pickups with stick shift. They are supposed to be "heavy duty", but we have already replaced two of them this year for customers, one in a one ton pickup, and the other in a four wheel drive Expedition, both used to tow a heavy trailer. Most of the clutches of any type are found in foreign vehicles, as today's automatic transmissions are better suited to severe duty, and often deliver equal or better mpg than manual. This includes the big Allisons that are becoming common in over the road applications. MTLott 02-06-2010 @ 9:42 PM reply profile send p.m. Member Posts: 38 Joined: Oct 2009 First as far as definitions, the clutch originally used in our early Fords is generally referred to as a coil spring clutch. A diaphragm clutch uses a single conical spring. They are two very different designs. I really am confused by what you've written and not sure which clutch pressure plate you are referring to when you say, "This allows less force to release the clutch in ordinary street driving." It sounds like you are saying it's the coil spring with counter-weights design as found in our early Fords that takes less pedal effort. If that's what you mean, you have it backwards. You obviously have your own definition of what a diaphragm clutch is based on some isolated past experience and knowledge ... but, almost every car today uses the design, and one of the benefits is requiring lighter pedal effort to operate the clutch. supereal 02-06-2010 @ 3:54 PM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 I suppose it depends on definition. Both types use a pressure plate and disk. The multi-arm "diaphragm' type depends on spring pressure to grip the disk, while the more common type seen in our old Fords uses centrifugal force to increase pressure as the speed increases. This allows less force to release the clutch in ordinary street driving. More often than not, the diaphragm clutch was lever operated, rather than by pedal, for that reason. MTLott 02-06-2010 @ 2:16 PM reply profile send p.m. Member Posts: 38 Joined: Oct 2009 "I have seen the diaphragm type clutch used mostly on drag cars and industrial engines, and an occasional marine application. They tend to be a "go-no go" unit that makes street use difficult." Are we talking about two different things? What doesn't use a diaphragm clutch today straight from the factory? http://www.google.com/search?hl=en&source=hp&q=ford+oem+clutch+kit&aq=f&aqi=&oq= http://www.google.com/search?hl=en&q=chevrolet+oem+clutch+kit&btnG=Search&aq=f&aqi=&oq= http://www.google.com/search?hl=en&q=dodge+oem+clutch+kit&btnG=Search&aq=f&aqi=&oq= http://www.google.com/search?hl=en&source=hp&q=oem+clutch+kit+toyota&btnG=Google+Search&aq=f&aqi=&oq= supereal 02-06-2010 @ 12:08 PM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 I have seen the diaphragm type clutch used mostly on drag cars and industrial engines, and an occasional marine application. They tend to be a "go-no go" unit that makes street use difficult.

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