Has anyone used this yet? I am sure some of you have.
Is there any reason not to put this in my Mangusta, which has a worse clutch linkage than a Pantera?
Mcleod 14025-22 kit
McLeod 1402-20 bearing
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JMM3,
I installed a Mcloed hydraulic throwout bearing last year. At that time they recommended 1402-22, which may be the older style. I created a detailed drawing cross-section, with dimensions, which I posted on this sight. I am also running a Hayes dual friction clutch and QwikTime bellhousing.
My layout had me concerned about the small amount of thread engagement with its spacer, mounted to the ZF input shaft. That said, it has been working fine thus far. It really cleaned up the look and I am happy with its function.
Matt
I installed a Mcloed hydraulic throwout bearing last year. At that time they recommended 1402-22, which may be the older style. I created a detailed drawing cross-section, with dimensions, which I posted on this sight. I am also running a Hayes dual friction clutch and QwikTime bellhousing.
My layout had me concerned about the small amount of thread engagement with its spacer, mounted to the ZF input shaft. That said, it has been working fine thus far. It really cleaned up the look and I am happy with its function.
Matt
quote:Originally posted by BigBlockFan:
JMM3,
I created a detailed drawing cross-section, with dimensions, which I posted on this sight.
Matt
I saw that, and I will look at it again. I wasn't able to get much info from McLeod. The piece sounds half universal/half ZF, so maybe a bit of fitting on both of our behalfs will be the best.
Thanks again for the drawing.
Hi Guys, On my track only 1974 Pantera, I am using a McLeod #1401-20 T/O Brg and a #1428 Spacer with McLeod's two disk Magnum Force clutch and Aluminum flywheel. This combination has worked well for me for the last three years. I had met Red Roberts at the PRI show in Orlando over three years ago and he gave me this comination based on my Pantera's use. Go to YouTube and enter 'Sebring Pantera' to see her run. Good luck!
JMM3, FWIW I installed a Tilton hydraulic throwout some 15 years ago when these things first came out. The racing Tilton is not a drop-in system. It uses a threaded body onto a custom threaded ZF nose piece, locked with an allen bolt. Commonly used in dirt track racing but nothing commercial for a ZF. It's still working fine in our Pantera but there were some initial 'teething' problems. I'm on Tilton's 3rd iteration (12 yrs old).
There are two big problems with any hydraulic throwout: first, free play adjustment is absolutely critical. The hydraulic slave is sealed by one double o-ring, AKA a 'quad-ring'. These only seal linear motion, so if you don't set quite enough free-play and the powertrain heat-expands (which it will), it's possible to bottom the throwout piston in its housing. This causes it to spin with the clutch, and in 50 miles, the quad-ring will fail.
This brings out the second disadvantage: to fix or adjust things, the ZF must be removed each time. This is a 155 lb pain in the back! Once you get the thing adjusted properly with the threaded lock-nut on your type of system, red Lock-tite is advised. All the vendors once sold such a system, but warranty problems associated mostly with inadequate free-play drove all but D. Quella's system off the market.
Advantages: all the monkey-motion in the stock clutch system goes away so you automatically get an easier clutch pedal with any clutch type. It also removes nearly 8 lbs of weight and complication from the car.
Just in case, I carry a spare Tilton throwout assembly in my trouble-bag. Have never needed it, but if I did, Cut Rate Auto Parts do not carry such things. 3-day express mail service is not what I want, 50 miles from civilization, on Sunday night. In the rain. Good luck.
There are two big problems with any hydraulic throwout: first, free play adjustment is absolutely critical. The hydraulic slave is sealed by one double o-ring, AKA a 'quad-ring'. These only seal linear motion, so if you don't set quite enough free-play and the powertrain heat-expands (which it will), it's possible to bottom the throwout piston in its housing. This causes it to spin with the clutch, and in 50 miles, the quad-ring will fail.
This brings out the second disadvantage: to fix or adjust things, the ZF must be removed each time. This is a 155 lb pain in the back! Once you get the thing adjusted properly with the threaded lock-nut on your type of system, red Lock-tite is advised. All the vendors once sold such a system, but warranty problems associated mostly with inadequate free-play drove all but D. Quella's system off the market.
Advantages: all the monkey-motion in the stock clutch system goes away so you automatically get an easier clutch pedal with any clutch type. It also removes nearly 8 lbs of weight and complication from the car.
Just in case, I carry a spare Tilton throwout assembly in my trouble-bag. Have never needed it, but if I did, Cut Rate Auto Parts do not carry such things. 3-day express mail service is not what I want, 50 miles from civilization, on Sunday night. In the rain. Good luck.