CPP Combo Valve-to-stock fuel line adapter fittings - The 1947 - Present Chevrolet & GMC Truck Message Board Network

demian5 · 04-24-2018, 11:22 AM

Ok, I need help from the guys who have done this before.

Doing my disc brake conversion, using a CPP combo valve and my stock brake lines, the front brake line appears to be larger than the hole in the combo valve, and the rear appears to be smaller.

I figured Im looking for:
Front: 3/8" x 24 male inverted flare to a 7/16" x 24 female inverted flare
Rear: 9/16" x 20 male inverted flare to a 1/2" x 18 female inverted flare

Sound right?

**leddzepp** · 04-24-2018, 12:35 PM

Cpp should have the necessary adapters. When I did mine they sold a package containing 3 different ones. They were the only place I could find the proper sizes, no auto parts store or fastener shop had the proper size.

cleszkie · 04-24-2018, 12:55 PM

I seem to recall my CPP combo valve coming with the set of adapter fittings.

GASoline71 · 04-24-2018, 01:47 PM

My stock brake lines matched right up to the CPP combo valve. But my rig is a 1972... so that might have had something to do with it.

Gary

demian5 · 04-24-2018, 01:50 PM

Found on the site.

PROP VALVE FITTINGS
CP2091 9/16"-18 inverted male flare, 3/8"-24, 7/16"-24, 1/2"-20 inverted female, kit $10.00

Pretty much what I thought. Ill cruise to a hardware place and get them.

**leddzepp** · 04-24-2018, 01:59 PM

Quote:

Originally Posted by demian5

Found on the site.

PROP VALVE FITTINGS
CP2091 9/16"-18 inverted male flare, 3/8"-24, 7/16"-24, 1/2"-20 inverted female, kit $10.00

Pretty much what I thought. Ill cruise to a hardware place and get them.

That’s the one. Good luck finding them anywhere else. I even went to McFadden/Dale, which carries everything under the sun...and they didn’t even have them.

demian5 · 04-24-2018, 02:42 PM

Quote:

Originally Posted by leddzepp

That’s the one. Good luck finding them anywhere else. I even went to McFadden/Dale, which carries everything under the sun...and they didn’t even have them.

How long ago for McFadden Dale?

Grainger next door says they have them on the website. I actually found them at Autozone last night but didn't like the fit.

Worse case im driving to CPP at lunch tomorrow to get the set.

demian5 · 04-25-2018, 05:57 PM

Drove to CPP they had the adapter in a set of 3 (for 3 different sizes) for the rear brake line (it is steel). The front I had to source myself, and it is brass from Pep Boys.

demian5 · 04-26-2018, 06:17 PM

Got it installed, now on to the ball joints before the installation of the brackets and the brakes.

04-24-2018, 11:22 AM	#1
demian5 Registered User Join Date: Aug 2016 Location: Lake Forest, CA Posts: 2,177	CPP Combo Valve-to-stock brake line adapter fittings Ok, I need help from the guys who have done this before. Doing my disc brake conversion, using a CPP combo valve and my stock brake lines, the front brake line appears to be larger than the hole in the combo valve, and the rear appears to be smaller. I figured Im looking for: Front: 3/8" x 24 male inverted flare to a 7/16" x 24 female inverted flare Rear: 9/16" x 20 male inverted flare to a 1/2" x 18 female inverted flare Sound right? __________________ "Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC Last edited by demian5; 04-26-2018 at 06:18 PM.

04-24-2018, 12:35 PM	#2
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,019	Re: CPP Combo Valve-to-stock fuel line adapter fittings Cpp should have the necessary adapters. When I did mine they sold a package containing 3 different ones. They were the only place I could find the proper sizes, no auto parts store or fastener shop had the proper size. __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul

04-24-2018, 12:55 PM	#3
cleszkie Registered User Join Date: Feb 2003 Location: Santa Ana, CA Posts: 2,191	Re: CPP Combo Valve-to-stock fuel line adapter fittings I seem to recall my CPP combo valve coming with the set of adapter fittings.

04-24-2018, 01:50 PM	#5
demian5 Registered User Join Date: Aug 2016 Location: Lake Forest, CA Posts: 2,177	Re: CPP Combo Valve-to-stock fuel line adapter fittings Found on the site. PROP VALVE FITTINGS CP2091 9/16"-18 inverted male flare, 3/8"-24, 7/16"-24, 1/2"-20 inverted female, kit $10.00 Pretty much what I thought. Ill cruise to a hardware place and get them. __________________ "Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC

04-25-2018, 05:57 PM	#8
demian5 Registered User Join Date: Aug 2016 Location: Lake Forest, CA Posts: 2,177	Re: CPP Combo Valve-to-stock fuel line adapter fittings Drove to CPP they had the adapter in a set of 3 (for 3 different sizes) for the rear brake line (it is steel). The front I had to source myself, and it is brass from Pep Boys. __________________ "Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC

04-26-2018, 06:17 PM	#9
demian5 Registered User Join Date: Aug 2016 Location: Lake Forest, CA Posts: 2,177	CPP Combo Valve-to-stock brake line adapter fittings Got it installed, now on to the ball joints before the installation of the brackets and the brakes. Attached Images __________________ "Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC



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