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240z Wilwood proportioning valve fitting leak


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Curtball are you using this unit?

 

http://www.summitracing.com/parts/wil-260-11179/overview/

 

This is the unit I have and I have leaking fittings on all 5 ports. I made up new lines and the end that go into the Master Cylinder don't leak along with the unions I made. I am puzzled why this thing is leaking! The inverted flare seems to be exactly what is needed but here I am.

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I'm using this http://www.wilwood.com/MasterCylinders/MasterCylinderProd.aspx?itemno=260-8419 with these fittings http://trackspeedengineering.com/product_info.php/products_id/144 I then I picked up a M10 brass union at Oreillys auto parts. Everything inverted flared, I used Teflon tape on the metric adapters, skipping the first couple threads, then putting a couple of layers on the rest of the threads. Only did this to the adapters since they don't seal by compression

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Like I said above. Teflon on the fittings you install in the prop valve to convert it to metric. These are just threaded fitting, you can use a little Teflon on red arp thread sealer. Everything else is sealed by compression with inverted flare fittings

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Like I said above. Teflon on the fittings you install in the prop valve to convert it to metric. These are just threaded fitting, you can use a little Teflon on red arp thread sealer. Everything else is sealed by compression with inverted flare fittings

Yes. The fittings on most prop valves are 1/8 NPT. You can see the thread sealant already on the fittings from the manufacturer in this example:

http://www.jegs.com/i/Baer+Brake/136/2000035/10002/-1?CAWELAID=1710912856&CAGPSPN=pla&catargetid=230006180000514967&cadevice=c&gclid=CjgKEAjwtZucBRD77aiiq_v4xnASJABkAg8J5Ni2G_JgF3gDAXjLw2F2msL4q5l48KMTWhsLfv3cYfD_BwE

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The ones I bought I don't believe came with thread sealer already on it, but I did this same setup and I ran into issues with various lines leaking. NPT, flared lines/fittings, and myself don't seem to have a great relationship. I have this issue with air tools, for some reason I'll sometimes get it to seal fine on the first try, other times it takes a couple tries of me wrapping the threads with thread seal tape and trying again. Anyway I wrapped my fittings for my wildwood and didn't have any problem with it. I did run into issues with leaking on various lines with the double flare. I'm running very similar to what you mentioned though. A Wilwood proportioning to the rear and I did a union between the two lines that went into the old proportioning valve for the front. As was mentioned in this thread most of it was resolved by having to loosen/re-tighten my lines. I feel like a lot of times I'm running into seating issues, even with the original factory lines simply because of the way things get bent, moved, etc. You may need to just tighten everything up a bit more.

Edited by DuoWing
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  • 9 months later...

**Edit**

This is a bubble fitting, instead of our inverted. So, please excuse the information.

 

Sorry to bring this back from the dead, but it looks like Wilwood now sells a prop valve that will fit our stock fittings . . 

 

http://www.wilwood.com/MasterCylinders/MasterCylinderProd.aspx?itemno=260-12627

 

Has anyone tried this new prop valve?

Edited by New-to-240z
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The 240Z uses 10mm x 1.0 inverted flare brake fittings.

 

The Wilwood ad says:

 

"as the inlet and outlet ports are 10MM X 1 bubble flare seats and do not require tube nut adapters to directly install tubing with bubble flare 10MM x 1 nuts."

 

Bubble flair brake fittings on a 240Z will leak.

 

The Wilwood PV i used has  1/2" NPT   ports. So I used 10mm x 1.0mm inverted flair to 1/2" NPT  adaptors.  They can be purchased at Fly'n Miata or from other suppliers.

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