Clutch Slave Question

[lts70]

Many years ago I installed an nv3500 transmition out of a 1992 Chevy truck. I installed the clutch set up from the same truck. The slave cylinder is now leaking and needs replacement. I would like to use a a wildwood style replacement but I am not sure if it will work as the linkage portion is different. Any advice would be apriciated. The rock auto link below is the style I have now and the wilwood link is what I would like to use if possible.

http://www.rockauto.com/catalog/moreinfo.php?pk=1403583


http://www.wilwood.com/MasterCylinde...ter%20Cylinder
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[lts70]

Bump
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[88JRFAN]

The slave cylinder i have is the same type you want to use. I not sure of the linkage on the oem style, but the linkage on the willwood is simple to use. Go to Speedway motors, this is where i got mine. They have the linkage parts that you will need. Plus they are priced good. They might be able to answer any questions you might have. Hope that helps.

[lts70]

The leaky one currenlty install

[lts70]

Linkage inside cab

[lts70]

It would be right at home next to my wilwwod master and proprtioning valve.

[88JRFAN]

From what i can tell, you should have no problem with the linkage. Might be able to reuse what you already have. The rod coming out of the wilwood is 5/16 thread on mine.

[lts70]

Which one of these two would you guys use?

http://www.speedwaymotors.com/Wilwoo...aster+Cylinder

http://www.speedwaymotors.com/Wilwoo...aster+Cylinder
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[88JRFAN]

I used the 3/4 bore size master. Worked good for me.

[lts70]

Looking at the two specs between the 5/8" and 3/4" bore difference I do not see any noted difference in over all body size or internal fluid capacity.

This may be a dump question... but here it goes, what is the difference between the two. Any advatage or disadvantqage in going with one or the other?

[SunSoaked]

Originally Posted by lts70

Looking at the two specs between the 5/8" and 3/4" bore difference I do not see any noted difference in over all body size or internal fluid capacity.

This may be a dump question... but here it goes, what is the difference between the two. Any advatage or disadvantqage in going with one or the other?

Fluid diplacement vs pedal travel. The larger bore will give a stiffer pedal. The smaller an easier pedal assuming it dont go to the floor before the clutch disengages.

Best way is to figure out the bore size in the one you have and match it. In all honesty, in your case, either one will work. I use them in my buggy/sandrail projects as brake M/Cs.

[lts70]

I just ordered the 3/4" bore version. I will post pictures when I get it installed.
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[lts70]

So I got my Wilwood clutch master cylinder mostly installed. Here are some pictures. It looks right at home next to my Wilwood brake master and proportioning valve. I sanded all of the casting marks and inclusions out and then buffed it to a shine. Started with 80 grit, then 150, then 220, then 300 wet, then 600 wet, then hit it with a powerball and polish compound. Looks a lot better than the dull finish it came with.

I had to cut down the original push rod linkage and thread it to match the treads sticking out of the new master. I couldn't find a 5/16 - 24 coupler so I had to thread a piece of pipe with nuts on each side to couple the new linkage to the old under the dash, see picture.

Now all I need to find is a brake line adapter that will take the old line fitting which is 12-1.0 mm and neck it down to the 3/8"-24 inlet on the new Wilwood master. So basically I need a 3/8"-24 (male) to 12-1.0 mm (Female) connector.

Anyone know where I can get one of these fittings?

[lts70]

I can not find any fitting that will directly fit the master cylinder, I think that is why this thing comes with an adaptor from the factory. I just would like to get away from using any adapters,at this rate I may have to use two adapters back to back. It looks like I may not have a choice if I cant figure this out. I wasn't expecting this, I did not see it listed anywhere when ordering, not even on wilwood site (it does show it in there product picture). I basically need the same adaptor provided with the master cylinder but instead of excepting 3/8"-24 it needs to except a 12-1.0 mm. This is a picture of the fitting that came with the master.


Please help me figure out a way to do this connection as clean as possible.



.

[SunSoaked]

Nice! Looks great.

[Portmod7]

I'm going to say your best bet is go to your local hydraulic shop. Those guys (should) know their fittings. Keep asking till you find someone who knows. I would bet that Wilwood doesn't make a fitting special for that application, they bought it somewhere.

[lts70]

I thought I had found the adapter (NAPA part #7974) I needed but it turned out to be backwards,just my luck. I think I will just have to cut the old metric fitting off the the hard line and find a standard size fitting that will be easier to find an adapter for.

http://www.agscompany.com/automotive...r-fittings/133

http://m.napaonline.com/parts/PartsD...974_0006433989
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[lts70]

This is the type of line I have. It goes from hard line to rubber back to hard line.

Is it possiple to cut it at the rubber and recrimp a smaller line? It has 1/4" line now that is just to big to find any fittings that will work with my 3/8"-24 inlet.

[lts70]

After making a million phone calls and about to just have an all new line made up I got refered to Tony Stevens at Carolina Racing Supply.

(704) 662-8299
www.carolinaracingsupply.com

And for $5 I hope I will be back on the road again. I hope this truly works.


The silver piece should go into the master cylinder. The sleeve (small part on right) and the nut should go on the hard line with only a single flare, no double-flaring required.

I just hope down the road this helps at least one guy find the fittings to go from his NV3500 to a wilwood clutch master. If it does and you read this shoot me a PM, it will make my day. Just out of curosity, is anyone watching this with intrest?

[88JRFAN]

Just out of curiousity, could you have went with a braided line instead of the hard line. Was the other end of hard line a metric size too?

[Portmod7]

Glad you found a solution!

I love using tube nuts and sleeves with the single flare. SO much easier than double flare, and I have MUCH better luck with them sealing up.

[lts70]

I finaly got her all back to gether again. It was good to give her a drive around the block. Still need to bleed the air out to get more pedal though.