Has anybody ever heard of a hyduralic throw-out bearing and if there is any for the 901 transmission?
Thank You!!!!
Phillip J. Haun
Oak Harbor, WA.
Sure. You could find one that fits your dimensions fairly easily, they are not uncommon and I bet there is an after market set. Then you will have to figure out how you are going to do the pedal cluster with another MC for the clutch. I am sure someone here has done it before.
The one I saw pics of was the guy down under, (:insert the OH $HIT I can't remember his name smilie:) He posted some good pics of his setup(No I can't post those pics, not at home) right around the time of the last big arguement
discussion about brakes.
wevo makes them for 915 and 930 applications iirc....
worth a look
wouldnt it be easier to hook up a slave cylinder instead? Hyd. TO bearing dies and you have to pull the tranny.... slave dies and you unbolt it.
You can get some cool after market stuff like CNC hydraulic clutch kits which include a clutch pedal with a reservoir and an external slave cylinder. The last one I saw was on a Becks 550 replica. They beafed up the location where the stock cable went through where the slave was bolted but that was on a VW trany. I think you would need to fab a beafy clip that bolts to your trany. As mentioned above, keeping everything external keeps it symple.
90s Jeeps had 'em, and they were a weak point. The Cap'n
"Tilton" makes the Hydro T/O bearing you are discussing.
Clayton
Will post the photos tomorrow morning. They are on the computer at home. That wont be long because i'm 3/4 of a day in front of you.
My 944T has a a hydrolic clutch
I did mine with a hydraulic clutch several years back.
I grafted a 964 master cylinder onto my pedal cluster,and used a Wilwood
slave cyl.on the trans end.
The pics are several years old,so everything has been tightened up to work properly.
Ron
Attached image(s)
KISS (keep it simple stupid)
just my $.02.....
944 master cylinder, second reservoir, 944 slave cylinder. Inexpensive and will work good. Just need to do a little fabrication on the transmission end for a bracket that holds the slave cylinder in place to activate the throwout bearing.
This is the Tilton one:
http://www.tiltonracing.com/content.php?page=hydraulic
However, as i'm using a 911 pull clutch I could do it externally.
Attached image(s)
You're STILL missing the point ..................... Take a look at this:
http://www.novak-adapt.com/images/pics/jeep_internal_hydraulic_throwout_bearing.jpg
The Cap'n
Why would someone want that? Super-pain-in-the-ass when it fails. (Not IF but when).
I understood the throwout bearing question. I was pointing out that the 944 has a system that may be adapted without using a hydrolic throw out bearing.
Ok. He's got everybody's recommendation about it being a failure point.
Now. If you want to comment any further, lets make it about where to get one or how to go about doing it. Repeating over and over again about what a bad idea it is doesn't help anything and it may piss the asker off.
It's not like he's talking about making it out of titanium or anything. And he may have a good reason for wanting to do that over an external hydraulic slave cylinder. Maybe a reason that he doesn't care to disclose.
And on the other hand, if the recommendations in regard to the throw-out bearing being a failure point have helped. The asker should state so, so that it would be reasonable to give advice in that direction.
Don't get it Krusty, the link is to the Tilton concentric throw out bearing. The only failures I have heard of is in formula type race cars where the thing is surrounded by the oil tank cast into the bell housing. In which case you have to use a different seal which will handle the higher temperatures. All manner of Saabs have used them for years without problem.
So jeep used a crap concentric hydraulic throw out bearing....no real surprise there.
FWIW we own a GT3RS which was run at LeMans a few years ago. This car came from Porsche with a Tilton clutch and hydraulic t/o bearing. I suppose if Porsche supplies there racecars with that equipment it should be some pretty good shiznits. You know to survive basically 24 hours of full throttle numerous upshifts/downshifts abuse.... The t/o bearing clutch are pretty bulletproof.... thought the axles are another thing alltogether ( and at $5000 )
Tilton used to make a 901 specific t/o bearing along with a 6 bolt flywheel... but those items have disappeared from there selection. Wevo now makes the hydraulic t/o bearings.
Tim,
It seems that Porsche sell the same axles up there as they do down here. We use the used ones for practice starts, then toss them. For a race car about as useful as legs on a snake.
Cheers,
H
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