HD performance clutch for a Turbo 4.2 258 with the T150? - JeepForum.com

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post #1 of 7 Old 04-10-2017, 05:22 PM Thread Starter
jarrodblake
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HD performance clutch for a Turbo 4.2 258 with the T150?

I am in need of a heavy duty clutch for a turbo charged 4.2 258 with the 3 speed T150 transmission 78 cj7. I'm pushing about 80Hp over stock and quite a bit more torque. I currently have new a oem 3 finger Lever type clutch with about 5k on it and it slips really bad when in boost.

I have found a few OEM plus diaphragm type clutch but nothing really heavy duty performance clutches. Any one have any leads 10.4" clutch diameter; 10 tooth spline; 1 1/16" input shaft diameter.

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post #2 of 7 Old 04-10-2017, 07:44 PM
CSP
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Lots of Ford transmissions use the same 1-1/16", 10 spline input shaft. Perhaps check Fox body Mustang compatibility. I would think that a Centerforce II would be more than capable of holding. Even at 80hp and more torque over stock it's not exactly big numbers.
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post #3 of 7 Old 04-11-2017, 05:07 PM
Matt1981CJ7
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What CSP said. ^^^

Even with 80 more HP, you are still under 200 HP. My Luk diaphragm clutch holds my 325 HP V8 just fine.

Matt


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post #4 of 7 Old 04-11-2017, 08:20 PM
pedal2themetai
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Hi, I'm with Matt .. you don't have any weight so if your just street or mild trail a stock will most likely work fine.
good luck
tim
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post #5 of 7 Old 04-12-2017, 08:25 AM Thread Starter
jarrodblake
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Well I was wrong, I was having a hard time finding a clutch with 1-1/16", 10 spline as that is what is called for in a 78 cj7, however after going through my spare parts I found one of my extra clutch disk and I found my alignment tool. They are 1 1/8" not the 1-1/16" that I thought they where so now I have more to choose from. The jeep has a remanufactured engine in it and it also came with a flex plate for an auto trans, so I assume it has a newer t150 the bigger spline.
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post #6 of 7 Old 04-12-2017, 11:46 AM
Matt1981CJ7
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Quote:
Originally Posted by jarrodblake View Post
Well I was wrong, I was having a hard time finding a clutch with 1-1/16", 10 spline as that is what is called for in a 78 cj7, however after going through my spare parts I found one of my extra clutch disk and I found my alignment tool. They are 1 1/8" not the 1-1/16" that I thought they where so now I have more to choose from. The jeep has a remanufactured engine in it and it also came with a flex plate for an auto trans, so I assume it has a newer t150 the bigger spline.
Where are you reading about a "newer" T150 with a 1-1/8" input? They all had 1-1/16" based on my research.

FYI, a 1-1/8" clutch disk will appear to fit on a 1-1/16" input shaft at first glance, but it will be a loose fit . In fact, I almost made that mistake when I swapped from a SR4 to a T19.

The first pic below shows the slightly sloppy fit of a 1-1/8" disk on a 1-1/16" shaft. The second pic shows the proper 1-1/16" disk on the same shaft.

Matt
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ClutchKit4.jpg   ClutchKit5.jpg  


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post #7 of 7 Old 04-12-2017, 06:47 PM
CSP
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Every T150 has the 1-1/16" input. If you had a 1-1/8" clutch disc on it at one point it was the wrong disc. Every 76-79 CJ had the 1-1/16" input, no exceptions (which is rare to be able to say about anything Jeep).
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