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02-20-2006, 11:53 PM
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Club Cobra Member
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Join Date: Jan 2000
Location: Smartsville,
ca
Cobra Make, Engine: Former Everett-Morrison,428SCJ
Posts: 356
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Not Ranked
Clutch Slave Cylinder?
Hi Guys,
So what's the best clutch slave cylinder to use? I just took a look at the one Finish line sells for (Gulp) $175........ I remember reading something about a Mazda B2000 part, and ERA uses one from a BMW. I'm not afraid to build a mount, but I'm not sure what cylinder to start with. I'm running a "standard" Tilton 3/4" master.
Thanks!
Jon
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02-21-2006, 12:20 AM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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Not Ranked
If you will go to NAPA and look at their illustrations of the slave cylinders, the one you are after is sourced from a late 50's-60's Ford truck. I think it is 3/4" diameter. It has a tab on the cast body with 2 holes for 3/8" bolts
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way 
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02-21-2006, 07:03 AM
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Renegade Nuns on Wheels
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Join Date: Aug 2001
Location: columbus,
Oh
Cobra Make, Engine: Unique 427 roadster with 351C-4B
Posts: 5,129
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Not Ranked
Rick, is that a push or pull unit? The Wilwood I use leak practically from day one...
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02-21-2006, 10:02 AM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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Not Ranked
Push type on the NAPA item.
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way
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02-21-2006, 12:07 PM
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CC Member
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Join Date: Mar 2002
Location: Plantersville,
TX
Cobra Make, Engine: Self Built, 427 USRRC, 427FE, Toploader
Posts: 583
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Not Ranked
Jon,
The NAPA #353223 slave at Less than $56, good to go.
grumpy
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02-21-2006, 09:49 PM
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Club Cobra Member
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Join Date: Jan 2000
Location: Smartsville,
ca
Cobra Make, Engine: Former Everett-Morrison,428SCJ
Posts: 356
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Not Ranked
Grumpster, the Napa number came up blank on their site. I ordered one for a 1960 Ford truck. It looked just like the one in the Finish Line picture, but it was $130 cheaper....... I'll let you know if it fits in a day or two.
Thanks,
Jon |
02-22-2006, 06:56 AM
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CC Member
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Join Date: Aug 2004
Location: SE Wisconsin,
Wi
Cobra Make, Engine: Arntz/SBC/Jag
Posts: 1,033
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Not Ranked
I used a NAPA 3/4" slave (push type) that was part # 37498 and was around $55
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02-22-2006, 07:19 AM
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Ouch Ouch Hot Sand
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Join Date: Jul 2003
Location: Daytona Beach,
FL
Cobra Make, Engine: Street Beasts w/302 Twin Turbocharged....Under Construction!!
Posts: 1,796
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Not Ranked
__________________
Safe Flyin, errrrr Drivin, Earl
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02-22-2006, 10:03 AM
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CC Member
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Join Date: Mar 2002
Location: Plantersville,
TX
Cobra Make, Engine: Self Built, 427 USRRC, 427FE, Toploader
Posts: 583
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Not Ranked
what makes you feel comfortable
Jon,
Sorry the NAPA number is TS-4433721 on the previous item request, the one
I noted is a NAPA/photo number for stocking/shelving purposes I will stick with the 0.998" bore slave with a 0.870" bore clutch master cylinder, and a simple 1/4" plate steel bracket over any other combinations, and there are hundreds of methods and fasteners available.
Pressure = (Leg force on the pedal) x (Pedal Ratio) divided by (Master Cylinder Piston Area) with Pi times (radius of the piston squared) times (the piston)
Used for decades on FE/Lima big block AC/COBRA type Reproductions with out a flaw. So ever what rattles your cage.
grumpy
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02-22-2006, 11:29 AM
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CC Member
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Join Date: Sep 2002
Location: Santa Barbara, CA,
Posts: 230
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Not Ranked
Quote:
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Originally Posted by grumpy
Jon,
Sorry the NAPA number is TS-4433721 on the previous item request, the one
I noted is a NAPA/photo number for stocking/shelving purposes I will stick with the 0.998" bore slave with a 0.870" bore clutch master cylinder, and a simple 1/4" plate steel bracket over any other combinations, and there are hundreds of methods and fasteners available.
Pressure = (Leg force on the pedal) x (Pedal Ratio) divided by (Master Cylinder Piston Area) with Pi times (radius of the piston squared) times (the piston)
Used for decades on FE/Lima big block AC/COBRA type Reproductions with out a flaw. So ever what rattles your cage.
grumpy
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Grumpy I bought a Raybestos (Pep Boys) and a Napa unit, used the Raybestos unit (I liked the alignment better) but same same.
Really tried to make sure the push was in the middle of the plunger and traveling equally in the bore, instead of running on one wall, it took some time as well a tweaking the fork.
You comment 7/8" master to 1" slave is the ticket.
I have Wilwood which only has a 3/4" master (largest) and sleeved the slave to 7/8"
Being math challenged does subtracting 1/8" from each windup with the same ratio as yours?
Thanks
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02-23-2006, 12:00 AM
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Club Cobra Member
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Join Date: Jan 2000
Location: Smartsville,
ca
Cobra Make, Engine: Former Everett-Morrison,428SCJ
Posts: 356
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Not Ranked
The one I ended up with (1960 Ford Pickup)has a part number of 2333721. At first look, there is no easy way to mount this thing. Do any of you guys have a picture of how yours is installed? I'm thinking that maybe the $20 aluminum one with the sideways mounting holes might "rattle my cage " more than the $45 cast Iron one with the lengthwise holes. Aluminum polishes better, check my gallery.......
Thanks,
Jon |
02-23-2006, 12:31 PM
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CC Member
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Join Date: Sep 2002
Location: Santa Barbara, CA,
Posts: 230
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Not Ranked
Hi Jon,
I have an original frame and tried a the Ford 1960 pickup slave shown. Tried Raybestos and Napa as well as a CNC which mounts sideways. This worked best for me.
Not good at posting pictures, send me a PM if you want a hi-def photo.
Hope this helps.
Last edited by weekendwarrior; 02-23-2006 at 12:36 PM..
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02-23-2006, 02:24 PM
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CC Member
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Join Date: Jul 2002
Cobra Make, Engine: KMP329 w/KC489 Shelby
Posts: 392
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Not Ranked
John,
Look at the Finishline bracket or better yet, call them and see if they will sale you just the bracket. You need to be careful as Warrior mentioned that those slaves are 1" bore (at least all of the one I found) and you will probably not get enough travel with a master with a bore of 0.75" or less.
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