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| Adapting a Small Bore Slave for use on the Getrag. Pics and Info included. (Page 2/6) |
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pswayne
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DEC 02, 09:51 AM
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| quote | Originally posted by Capt Fiero:
As for the Cast verses the Steel. I would use a steel one if I could find one locally. However even if I go to a Delco dealer, they supply me with the cast one, and put it in a Delco box.
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The steel ones are as rare as hen's teeth these days. A chrome plated one on a show car would really look good, though.
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Rodney
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DEC 02, 10:02 AM
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I'm doing some work looking at having better quality slaves made. Time will tell. They will have double seals if I can get them made in better quality than what is out there. Should be one item the FS can't copy. 
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Rodney Dickman Fiero Parts And Acc's Web Page:
www.rodneydickman.com
Rodney Dickman's Fiero accessories
7604 Treeview Drive
Caledonia, WI 53108
Phone/Fax (262) 835-9575
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turboguy327
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DEC 02, 12:22 PM
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If somebody can get me the dimensions we need I may be able to help out. I work at a machine shop and if I came in on a weekend and a machine was free I could most likely make something up for you guys. I would make 1 for somebody to try and if it works I would make a run of them. But I need dimensions first and then a trial run. I have a muncie right now and I need my car for a DD so I cant take it apart.
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JazzMan
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DEC 02, 01:28 PM
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Here is a drawing of the Getrag slave. Reduce the diameter to 13/16" to use the MR2 piston assembly:
JazzMan
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turboguy327
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DEC 02, 02:09 PM
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Give me a little while. I will need to convert everything to SAE measurements. Nobody I know has metric equipment or measuring tools to double check the work the machine will do.
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perry rhodan
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DEC 02, 03:56 PM
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pswayne
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DEC 02, 05:44 PM
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| quote | Originally posted by JazzMan:
Reduce the diameter to 13/16" to use the MR2 piston assembly:
JazzMan |
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You'll have to make it a little longer, to compensate for the reduced diameter. The piston will travel farther with a given master piston movement. And the drawing is of a steel slave, so only the inside dimensions are (for the most part) important.
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Will
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DEC 02, 05:51 PM
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| quote | Originally posted by pswayne:
You'll have to make it a little longer, to compensate for the reduced diameter. The piston will travel farther with a given master piston movement. And the drawing is of a steel slave, so only the inside dimensions are (for the most part) important. |
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The length will not change. The disengagement throw of the clutch will not change. The difference in throw will show up as reduced MC (and thus pedal) travel required to disengage.
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Capt Fiero
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DEC 02, 06:09 PM
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The math is pretty simple.
Get a Length of stainless pipe, Must be 15/16" OD 13/16" ID which would be a wall thickness of 1/16" which is actually a fairly common size.
You'll need to cut 2 1/4 inch slits in the end of the pipe to allow for fluid to access the bleeder screw and come in from the feed tube. Then you are going to need some sort of sealing agent on the outside wall of the pipe so when you press it inside the bore of the Getrag slave there won't be any chance for leaks between the new sleeve and the original bore. Then add in your MR2 piston, and replace the original C-Clip on the end.
I was actually thinking of using JB weld as it is really tough stuff and I don't think break fluid will dissolve it. Especially considering the really really thin area it has to stop fluid from sneaking by.
Seeing as the master does not blow the piston out the end on a 13/16s bore slave right now, I don't think that will even be an issue with your new system. I have access to stainless pipe, and I have a diagram in my head on how this will work. I am no good with cad, so I really can't post it on here. Unless someone has some Betazoid ESP thing going on. ------------------
85GT,93 Eldorado 4.9, 5spd Dual O2 Custom Chip, Custom Exhaust. MSD Everything Capt Fiero --- My Over View Cadero Pics Yellow 88GT 5spd Full Poly Suspension, Lowered 1/2" in front, Corner Carver.
   
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Capt Fiero
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DEC 07, 09:20 PM
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Well I have had it on there for nearly a week. I spent the last 2 days out with my Wife, doing Christmas shopping, spending hours at a time driving from mall to mall, tons of traffic and I think this has been the best mod I have done to the car in terms of drivability.
One thing I have noticed and its all due to the smaller bore, the point on the pedal between engagement and full engagement is very short. The clutch comes on MUCH faster. It took me a few days to get use to the fact that you don't really slip it out, you rev it and engage it very quickly. Its a nice feeling once you get used to it.
Another note, I thought my clutch was on the way out, I was getting horrid clutch chatter at times, the chatter is completely gone now. My only guess is that it was the old slave and the piston must have been dragging and causing the clutch to engage oddly.
All in all I am very happy with the results.
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85GT,93 Eldorado 4.9, 5spd Dual O2 Custom Chip, Custom Exhaust. MSD Everything Capt Fiero --- My Over View Cadero Pics Yellow 88GT 5spd Full Poly Suspension, Lowered 1/2" in front, Corner Carver.
[This message has been edited by Capt Fiero (edited 12-07-2008).]
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