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#1
10-09-2009, 02:24 AM
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Torque converter lockup clutch
Anybody know of a lockup clutch that isn't actuated electrically? I never heard of such a thing, and therefore think I'm losing my mind...
I was hoping to insert a switch to allow manually disabling lockup. While trying to locate the circuit, I found only one connector (square, 4-pin?) to the 700R4. So I unplugged it and went for a drive- and lockup still occurs! Search as I may, I can find no other wires into the transmission. HELP!!! My sanity is at stake here...
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Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) ... or has a Pontiac born the same year as Jim Wangers? (1926} 
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#2
10-09-2009, 07:14 AM
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Mine is in the tranny. The shop that did mine set it up without a switch. I don't like it so he said I could bring it back he will put on a vacuum controlled switch that works better. A friend had the vacuum switch on his chevelle and said it worked very well. Unlocks the converter with a little throttle.
http://www.painlessperformance.com/w...rchField=60109 |
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#3
10-10-2009, 02:33 AM
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I'm finally starting to "see the light", after locating a cutaway drawing of an example of a modern lockup clutch, which shows it to be a hydraulically-actuated clutch. I've been under the mistaken notion that all of them were purely electromechanical, as was the wimpy little one in the wife's Malibu, back around 1980. Ahh... brief return to sanity...
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Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) ... or has a Pontiac born the same year as Jim Wangers? (1926}
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#4
10-10-2009, 05:27 AM
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There are pics in our transmission book of a torque converter with clutch, and description of how they work. Prior to writing the book, I'd never actually seen one cut open. Simply amazing as to how they work, and yes they are applied in the same manner as a clutch pack inside the transmission, set-up to effectively lock the input shaft to the torque converter housing. This effectively ceases all torque multiplication and slippage between the engine and the transmission.
I was also told that Ford had developed and used torque converters that locked-up internally dating back into the 1970's, but have no way to know how accurate that information is?.....Cliff http://www.cliffshighperformance.com/buy_book_2.html
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If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
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#5
10-10-2009, 08:40 AM
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Cliff,
The Ford C-5 (1983-1986) used a internal clutch, but it was so bad, all the rebuilt converters had the clutch omitted as they ALL failed. The Ford AOD (1980-1993) used a dampener that was splined to the direct clutch and was on when the car shifted to 3rd as it was driving the direct clutch. The ATX in Ford Escorts was similar. (The AOD lockup is very close to a Slim-Jim.)
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