 hydraulic clutch..., on a side shifter? |
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| mattillac |
 Feb 25 2005, 02:38 PM
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#1
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robots!  Group: Members Posts: 536 Joined: 27-October 04 From: vallejo,ca Member No.: 3,020  |
has anyone here converted their clutch from cable to a hydraulic master and slave cylinder system? pros and cons? just wondering?
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| Aaron Cox |
Feb 25 2005, 02:41 PM
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#2
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
Joe Buckles v8 car has it done....
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| mattillac |
Feb 25 2005, 02:56 PM
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#3
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robots! Group: Members Posts: 536 Joined: 27-October 04 From: vallejo,ca Member No.: 3,020 |
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| Mueller |
Feb 25 2005, 02:59 PM
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#4
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
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search for "airsix", he has done it, as well as a few other people that have posted pictures.......
Ben used parts from Wilwood I think, 2 others have used parts from a 964 and then I believe Rich Johnson makes a kit using Ford Ranger parts........ |
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| mattillac |
Feb 25 2005, 03:19 PM
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#5
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robots! Group: Members Posts: 536 Joined: 27-October 04 From: vallejo,ca Member No.: 3,020 |
more than one vw/porsche owner that i've spoke with(mostly vw owners) have told me to always carry extra clutch and accel. cables. i'd like to have a hydraulic clutch so i don't have to worry about it. but i'm not sure that a custom hydraulic clutch setup would be all that reliable either.
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| lapuwali |
Feb 25 2005, 03:31 PM
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#6
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743  |
Yeah, instead of a clutch cable, you'd need MC and slave cylinder rebuild kits on hand. I've driven lots of cars with cable clutches and lots of cars with hydraulic clutches. I've yet to notice a substantial difference in reliability. One thing is most hydraulic setups will give you some warning by going flaky before failing altogether. Cables usually just let go. Of the two, I think I'd rather replace a cable by the roadside than replace master or slave cylinders. |
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| Mueller |
Feb 25 2005, 03:34 PM
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#7
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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the cables are cheap and fairly easy to replace, you could just make sure you replace it every 1 or 2 years.... most all new cars use hydralics to activate the throwout bearing, my 911 has 70k miles with no problems from it's original hydralic system.... |
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| mattillac |
Feb 25 2005, 03:38 PM
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#8
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robots! Group: Members Posts: 536 Joined: 27-October 04 From: vallejo,ca Member No.: 3,020 |
i see what you mean. all the cars i've had were hydraulic clutch. it's just what i'm used to i guess. i like the way the hydraulic clutch feels a little better. it would be easier to do roadside repairs on the cable tho.
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| JB 914 |
Feb 25 2005, 04:12 PM
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#9
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Daddy! Finish my car NOW!!! Group: Members Posts: 1,593 Joined: 26-September 04 From: Garden Grove, CA Member No.: 2,831 |
i have it on my v-8. it came that way from the PO
i may be swapping the tranny on Sat. i'll take some pics of the setup. |
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| mattillac |
Feb 25 2005, 05:33 PM
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#10
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robots! Group: Members Posts: 536 Joined: 27-October 04 From: vallejo,ca Member No.: 3,020 |
cool stuff. i'm curious what the setup would look like since the clutch cable is a pull type. |
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| Gary |
Feb 25 2005, 05:38 PM
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#11
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Senior Member Group: Members Posts: 744 Joined: 12-January 03 From: Mount Airy, MD Member No.: 134 Region Association: MidAtlantic Region
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Here's a site with fuzzy pictures of the underside of Rich Johnson's ride: Rich Johnson's 914. One has a picture of the clutch setup. The slave cylinder I believe is from 944. Not sure what he did on the master cylinder side.
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| lapuwali |
Feb 25 2005, 06:07 PM
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#12
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
If you're using a stock 914 setup that "pulls" aftwards using a pulley, then you'd just place the slave cylinder forward of the arm to push it backwards (obvious a bracket would need to be fabricated). The setup in the Rich Johnson photos using a later pull type clutch where the clutch arm actually moves forward, and wouldn't need a pulley on a cable system. His slave cylinder is therefore aft of the arm and pushes it forwards. |
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| BIGKAT_83 |
Feb 25 2005, 06:22 PM
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#13
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Senior Member Group: Members Posts: 1,798 Joined: 25-January 03 From: Way down south Bogart,GA Member No.: 194 Region Association: South East States 
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Wilwoods slave cyl. pulls. I've got one mounted on a 901 sideshift now. Bob |
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| 914GT |
Feb 25 2005, 06:38 PM
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#14
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Senior Member Group: Members Posts: 1,100 Joined: 11-October 04 From: Tucson Member No.: 2,923 Region Association: Southwest Region |
I've got an 87 Acura Legend I bought new. I've had to replace the clutch flex hose to the slave cylinder three times so far. It fails without warning. I've replaced the slave and master cylinders at least once, maybe twice. This car has 160K on it. So instead of a cable breaking, it's a hose bursting. Either way it pisses you off. |
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| mattillac |
Feb 25 2005, 06:47 PM
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#15
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robots! Group: Members Posts: 536 Joined: 27-October 04 From: vallejo,ca Member No.: 3,020 |
how'd you mount it? i'm guessing a custom braket in place of the pulley setup thingy. did you make it yourself or did you have a shop fab it up? |
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| BIGKAT_83 |
Feb 25 2005, 07:52 PM
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#16
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Senior Member Group: Members Posts: 1,798 Joined: 25-January 03 From: Way down south Bogart,GA Member No.: 194 Region Association: South East States
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Made it myself. I'll take some pix's this weekend. The slave cyl. is no problem at all. Its the master cyl thats hard to fit using the stock clutch pedal. |
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| mattillac |
Feb 25 2005, 07:56 PM
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#17
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robots! Group: Members Posts: 536 Joined: 27-October 04 From: vallejo,ca Member No.: 3,020 |
thats what i figured about the master cylinder. theres not alot of room at the pedal cluster to fit something in there. that seems to be where the difficulty is. btw, look at the quote section...^^^^^...i'm getting dizzy... (IMG:http://www.914world.com/bbs2/html/emoticons/icon8.gif) |
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| airsix |
Feb 26 2005, 11:23 AM
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#18
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I have bees in my epiglotis Group: Members Posts: 2,196 Joined: 7-February 03 From: Kennewick Man (E. WA State) Member No.: 266 |
Mueller was close. Someone else here used a Willwood pull-type slave. I used one from CNC (they make bug and buggy stuff). It's the same part. I think CNC makes it and Willwood repackages it, so either one will be the same deal.
Install Cons: Real pain-in-the-behind to install the master cyl. I had to cut-up/weld-up the pan a bit to fit the Tilton master cyl I used. Some other people here have done clutch master cyl installs that I think were cleaner using different parts (including one with a 944 pedal-box that was a near bolt-in). Install Pros: The slave cyl and plumbing were a breeze. The clutch tube is big enought to run a steel hard line through. Then just use a $6 flare tool to put ends on the line after you run it though the tunnel. Awesome. Mounting the slave cyl was also simple. I connected the slave cyl to the hard line with a flex brake hose. Since the MC is physically lower than the slave I installed a 2# check valve to prevent drainback. Daily use Cons: None. In my project thread I commented about engagement hesitation that I attributed to the check-valve not flowing enough, but it might have also been too tight a bore in the MC (or something else?). Anyway it went comlpletely away after about 100 miles. I would rate it's function at 100% now. I can't imagine it working any better and I'm very happy with it. Daily use Pros: I run a 3,300lb pressure plate and it feels like a stock clutch. Probably my #1 favorite feature is no more monthly cable adjustments due to stock cable stretch. Also, I know that my monster clutch isn't ripping out the clutch tube mounts. -Ben M. |
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| skline |
Feb 26 2005, 01:28 PM
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#19
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Born to Drive Group: Members Posts: 7,910 Joined: 26-December 02 From: Costa Mesa, CA Member No.: 17 Region Association: Southern California |
Here is a picture of Joe's setup, this is before we did much to it. We are dropping the trans now to replace with his beefed up newly rebuilt one. Pretty self explanitory.
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| skline |
Feb 26 2005, 01:29 PM
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#20
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Born to Drive Group: Members Posts: 7,910 Joined: 26-December 02 From: Costa Mesa, CA Member No.: 17 Region Association: Southern California |
I will also take pictures of the front where the pedal was installed in a little while.
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