CNC Reservoir Fittings

[JeepFlyer]

Got my CNC triple reservoir in the mail this week. Aside from deciding where to mount it, I'm trying to figure out how to plumb the reservoirs to the master cylinders.

Does anyone know what size/type fittings are needed for the bottom of the CNC reservoirs? Are they 7/16" NPT fittings?

I was going to use the supplied hose and fittings but they aren't the same size as the banjo fittings that came with my complete kit for the Wilwood master cylinders (CNC fitting measures .305" OD and .230" ID ...the banjo fitting hose barb measures .375" OD and .305" ID).

The specs on Wilwood's website says the bolt for the banjo fitting is 7/16" so I can figure out that end. I was planning to use -4 AN fittings, but I'll settle for something simpler if anyone has suggestions.

Thanks in advance.

[GWL]

I bought my CNC set up from Mike Forte, Forte Parts Connection. He knows what you will need, so give him a call. He'll put together just what you need including different hoses that will fit the master cylinders.

George

[JeepFlyer]

I'd prefer to do it myself... would save me time and money

[CDXXVII]

Hope this helps

12048

[JeepFlyer]

Thanks Lmm! While I suspect they are bigger than 1/8" (I measured them with my calipers and they came out to around 0.40") I was planning to just call CNC tomorrow and figure it out. These were the last of a couple dozen fittings I'm waiting to buy from Summit. I'll let you know if get more info from the company. Searches didn't turn up anything, that's why I posted the original question. Thanks again.

[CDXXVII]

NPT stands for National Pipe Thread. While 1/8" NPT may sound small it actually has an outside diameter of 0.540". The adapter you need will depend on your hose size. I can not remember what that is exactly.

Will be something like this.

http://www.summitracing.com/parts/MAA-9-38023/

[Slider]

Went through the same thing... They were a bugger to find. I'm on the road for the week, but if you don't have an answer by the time I get home, I'll dig back and see what I ended up doing.

BTW, I ended up building a mounting plate and installing the resevoirs on frame rail in front of the Drivers Side Foot box. Just keep in mind that with the Coyote (I think that is what you are running) you'll need to mount the plate on the outside of the rail with the resevoirs mounted to that plate. And the whole thing needs to be far enough forward that you'll have room for them with the engine placed. Again, I can shoot pictures when I get home if needed. Just LMK

[BigLeo69]

i used for the brakes into the bottom of the cnc's fitting NPT 1/8" a 90* 4AN swivel then the correct hose and fitting to fit that (1/4" line)it was braided stainless for brake fluid this is the low pressure side into the wilwood M/C's the banjo bolt to fit the hose, i believe 7/16" is correct@ the M/C's

the hydraulic clutch was a seperate issue i used a 1/8" npt 90* with a hose barb fitting installed the correct type hose for the fluid and into the plastic cap M/C fitting which i think sucks but it is what it is, one day i may make something else for it. this is the area for which if you have a hyd. clutch set-up needs to be free of any air for the slave to work correctly if there is any sign of air in thru the plastic adapter you will just be pushing air into the slave. so a pressure bleeder is needed.

[JeepFlyer]

All, thanks for the great input. I talked to CNC this morning on my drive into work. The gentleman on the phone said it's 1/8" "pipe" which I confirmed is NPT, so the picture Lmm provided above with the specs was correct. He also recommended at least 1/4" lines to run to the MCs. So I'm going 1/8" NPT to -4 AN fittings on the bottom. My next question is going to the Coyote R&D forum to find out if there's enough room (4" or so) between the back of the Coyote and the firewall to mount it there. I might have to wait until the engine is in to find a final location. Thanks again for all the input.

[bansheekev]

1212312122Here is where I mounted mine (same setup Coyote/TKO) on a MKIV. Mounting plate is simply a flat plate of 1/8" thick aluminum with rivnuts/button head screws into the back vertical face of the 3/4" tube facing the fender. This configuration keeps the reseviours in tight close to the 3/4" tube making room for the Coyote head. I have heard that you have to move them temporarily to install the motor but they fit fine when the motor is in. Just be careful to mount them far enough toward the footbox if you are using the FFR hood hinges with the gas struts. You have to keep enough room for the strut to close without hitting the reseviour.

Kevin


All, thanks for the great input. I talked to CNC this morning on my drive into work. The gentleman on the phone said it's 1/8" "pipe" which I confirmed is NPT, so the picture Lmm provided above with the specs was correct. He also recommended at least 1/4" lines to run to the MCs. So I'm going 1/8" NPT to -4 AN fittings on the bottom. My next question is going to the Coyote R&D forum to find out if there's enough room (4" or so) between the back of the Coyote and the firewall to mount it there. I might have to wait until the engine is in to find a final location. Thanks again for all the input.

[acth4347]

I found some 90 degree fittings at Autozone for the 1/8 NPT on the bottom of the CNC reservoir to hose barb (assorted barb sizes). I went with 5/16. http://www.autozone.com/autozone/accessories/Dorman-AutoGrade-5-16-x-1-8-in-MNPT-90-degree-male-rigid-brass-elbow/_/N-25no?itemIdentifier=977063&_requestid=423103 Now the question is, what is the correct brake fluid resistant thread sealant to use on an NPT fitting under no pressure? I have checked quite a few threads and teflon seams to be a nono and Permatex doesn't have anything on their website. The guys at Autozone had no idea.

[bansheekev]

I used Permatex 59214 High Temperature Thread Sealant.

From Permatex's website:
"Suggested Applications: Head bolts into through holes, oil PSI sending units and sensors, oil and coolant lines, fuel fittings, rear axle fill plug, brake and power steering fittings"


I found some 90 degree fittings at Autozone for the 1/8 NPT on the bottom of the CNC reservoir to hose barb (assorted barb sizes). I went with 5/16. http://www.autozone.com/autozone/accessories/Dorman-AutoGrade-5-16-x-1-8-in-MNPT-90-degree-male-rigid-brass-elbow/_/N-25no?itemIdentifier=977063&_requestid=423103 Now the question is, what is the correct brake fluid resistant thread sealant to use on an NPT fitting under no pressure? I have checked quite a few threads and teflon seams to be a nono and Permatex doesn't have anything on their website. The guys at Autozone had no idea.

[acth4347]

Thanks! I really appreciate the helpfulness of FF car builders. You Rock!

[Avalanche325]

You can use Permatex High Temp thread sealant or High performance thread sealant.

I made sure the words brake fittings were in there before I chose mine. You have to go to the data sheets:

This is from High Performance:
TYPICAL APPLICATIONS
• Stainless steel fittings
• Head bolts into through holes
• Oil PSI sending units/sensors
• Oil and coolant lines
• Hydraulic line fittings
• Brake fittings
• Transmission fluid fittings
• PTO fittings
• Air conditioning fittings