Thread: Throwout bearing

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Wondering if some here have used the hydraulic throw-out bearing setup on the street... I've set a few up for some of the local circle burners and they luv em, curious how they behave on the street... ?????


PS--Will be used in conjunction with a McCleod Soft Lok clutch in a drag car.....

Don't know if this is what you're looking for, but I used the original hydraulic slave cylinder attached to the side of the bellhousing in the 62 Chevy pick up I had the 400 sbc in. I had a 3100 lb pressure plate built for it and it worked fairly well though it was a tad slow off the line.

Not really, Ken. I've ran the slave cylinder setup, can almost use it like a delay box..... The one I'm thinking about uses a hydraulic actuated throwout bearing instead of a clutch fork and slave cylinder....

Dave,
I drive a lifted Jeep TJ daily and it has a hydraulic throwout bearing assembly stock. Works smooth as silk, and have not had any problems after 72000 miles. It is a sealed system from the clutch master cylinder into the bellhousing area to the TO bearing unit. I plan to install a new TO bearing when it is time to replace the clutch, which is probably coming in the not too distant future. I can find a service manual section on it if it will help with anything you are looking for.

Originally Posted by rspears

Dave,
I drive a lifted Jeep TJ daily and it has a hydraulic throwout bearing assembly stock. Works smooth as silk, and have not had any problems after 72000 miles. It is a sealed system from the clutch master cylinder into the bellhousing area to the TO bearing unit. I plan to install a new TO bearing when it is time to replace the clutch, which is probably coming in the not too distant future. I can find a service manual section on it if it will help with anything you are looking for.

I've studied the tech data and setup procedures, wondering how the reaction time is from pedal relase to tires moving....or if you've noticed any difference in speed from a mechanical linkage type clutch..... The Soft Lok is a highly adjustable clutch with a soft launch, then adjustable rpm full hook....thinking maybe the hydraulic throw out bearing might complement the release timing and add to the consistency??????

Hey Dave what are you planning to put this in?

Originally Posted by Dave Severson

...wondering how the reaction time is from pedal relase to tires moving....or if you've noticed any difference in speed from a mechanical linkage type clutch.????

Dave,
I grew up with my old chebby stick and truthfully the only difference I have noticed with the Jeep is that there is no pedal freeplay. The throwout bearing is spinning all the time, as I understand it, where we always wanted 1/2" to 3/4" pedal, and don't ride the clutch. It engages smooth, and I don't notice any hesitation in hookup. That said, this is with an in-line 4.0 six and "normal" driving, plus slow rock crawling. I don't know what it would do with 500hp off the line, but my expectation is that it would engage just fine.

Originally Posted by stovens

Hey Dave what are you planning to put this in?

the 'maro.


Thanks for the help, Mr. Spears, appreciate it. Good to hear they last so long, sez something for the way they're built....

i set two up one with a ram slipper in a can with a liberty 5 co2 shift and one in a can was a mccleod sliper with a 5 speed lenco (long and heavy) both seam to work i had to play with the alum spacer on the throw out. press off the throw out cut it down on the lathe and press the throw out back on other then that not to much work i spent more time getting the can line up to the crank cent line

Dave

McLoed also has a release mech like the line lock just let do the button--same every time
works both off same button

Originally Posted by jerry clayton

Dave

McLoed also has a release mech like the line lock just let do the button--same every time
works both off same button

Yup, seen that Jerry... Might be a bit radical for some Saturday night action on the street.... but would be great on the track...

I think Sat nite street action would be great---put a chip in the programable msd and use the deal sorta like traction control--get as agressive as the street available traction can stand

saturday night action what the hell is that????? my dog will not even go out with me

Originally Posted by pat mccarthy

saturday night action what the hell is that????? my dog will not even go out with me

No man!!!! Yur thinkin' women and I'm talkin' racin' Pat!!!! Yer dog don't like to race??? Mine sure does, when he barks I shift, put the tach on his side so he doesn't get to feeling left out of the action.......

Originally Posted by jerry clayton

I think Sat nite street action would be great---put a chip in the programable msd and use the deal sorta like traction control--get as agressive as the street available traction can stand

Could try it Jerry, but nothing serious around here anyhow.....Just a bunch of chebbies...... Could put a 3 speed overdrive back in and still whoop most of 'em....