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01-12-2021, 05:16 PM
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#1 |
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Registered User
Join Date: Dec 2016
Location: OKC
Posts: 130
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Prop Valve Leaking
I installed a CPP prop valve (PVKS-2) when I did a disc conversion 3 yrs ago. The valve is now leaking at the back but not at the line connection, it's leaking at a large nut that was already in place and never removed at install.
Anyone have any experience with this problem? Worth trying to get it to stop by tearing it down or just replace it? I ordered this through Summit and it's no longer available but their replacement is close to $100. Any other suggestions? Thanks.
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'68 GMC 3/4 Ton 350, 700R4 |
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01-12-2021, 05:22 PM
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#2 |
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Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,066
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Re: Prop Valve Leaking
Clean it off & try tightening as is. Watch to see if there is any improvement then go from there.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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01-12-2021, 07:18 PM
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#3 |
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Registered User
Join Date: Dec 2016
Location: OKC
Posts: 130
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Re: Prop Valve Leaking
Tried that, it won't move at all, really tight already.
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'68 GMC 3/4 Ton 350, 700R4 |
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01-12-2021, 10:57 PM
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#4 |
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Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,066
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Re: Prop Valve Leaking
Sounds like its replacement time. Don't know that trying to rebuild is worth it.
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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01-12-2021, 11:26 PM
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#5 |
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Chevy guy
 Join Date: Mar 2015
Location: Tehachapi, Ca.
Posts: 78
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Re: Prop Valve Leaking
I bought mine direct from CPP and it leaked the same way. I called their tech support and they sent me a replacement. It takes a odd size wrench to remove and be sure to use a backup wrench on the block when you remove it.
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Tehachapi, Ca 57 BBW shortbed 64 C30 service bed 65 C10 long bed fleetside 70 C10 long bed fleetside 74 C30 flatbed |
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01-13-2021, 01:07 PM
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#6 |
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Registered User
Join Date: Sep 2013
Location: Newton,N.C.
Posts: 317
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Re: Prop Valve Leaking
What is sealing the adapter? is it a flare type seal or a gasket type, on the idea of the gaskets on rubber brake hoses, to clappers?
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01-18-2021, 12:14 AM
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#7 |
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BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,266
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Re: Prop Valve Leaking
Its an o ring that seals that rear adapter to the body.
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1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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01-18-2021, 02:08 PM
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#8 |
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Registered User
Join Date: Dec 2016
Location: OKC
Posts: 130
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Re: Prop Valve Leaking
I went with a Right Stuff prop valve, will be getting it installed before too long.
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'68 GMC 3/4 Ton 350, 700R4 |
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