Zedman Posted May 13, 2022 Report Posted May 13, 2022 Hi All- I have posted an article in the SDC Technical forum relating to reconditioning information/resources for our Brake Proportioning Valves. In view of a number of neglected Avanti's being restored, I felt the dearth of information relating to these valves would be worth rectifying. For your perusal https://forum.studebakerdriversclub.com/forum/your-studebaker-forum/tech-talk/1943891-avanti-ii-brake-proportioning-valve-information Regards, Steve.
WayneC Posted May 13, 2022 Report Posted May 13, 2022 Looks much different than the valve on my 1971 (which I believe to be original to the car, which I've owned since the 1990's)
WayneC Posted May 13, 2022 Report Posted May 13, 2022 BTW, I've been unable to find an exact replacement for my valve.
WayneC Posted May 13, 2022 Report Posted May 13, 2022 Also, I do not believe my valve is a proportioning valve, but rather it is a distribution block with a switch to light a dashboard warning light if either the front or rear brakes lose pressure. The valve has separate inlet and outlet ports and chambers for front and rear brake circuits, respectively, and a pressure switch between them that senses when pressure is lost in either circuit, illuminating a red warning light on the dashboard. If anyone knows where I can find a direct replacement for my switch, please let me know.
WayneC Posted May 13, 2022 Report Posted May 13, 2022 Darn, misspoke again: I meant to say "If anyone knows where I can find a direct replacement for this distribution block, please let me know."
Zedman Posted May 14, 2022 Author Report Posted May 14, 2022 Hi Wayne- I have had a browse of the site I reported on. The fellow has a lot of stock apropos other makes of cars there and information provided is extremely good. I would give him a yell and see what transpires. I believe there were some changes to Avanti brakes back in the mid '70's but I've no detailed knowledge of it.
Zedman Posted June 12, 2022 Author Report Posted June 12, 2022 Reply for Wayne- The Kelsey-Hayes proportioning valve sold by Nostalgic autos is marked as the replacement for earlier units. This valve also comes with a poppet type pressure switch. I'd suggest having a look at it here.... https://www.nostalgicmotorcars.net/store/p18/1971-1985_Avanti_Brake_Combo_Valve_kit%2C_not_Studebaker_Avanti_.html#/
WayneC Posted June 12, 2022 Report Posted June 12, 2022 Thanks, I was hoping for a less-expensive (much simpler to implement) original replacement valve.
silverstude Posted June 12, 2022 Report Posted June 12, 2022 Look up a Master Power Brake Combo Valve
Randy Atkin Posted June 13, 2022 Report Posted June 13, 2022 Wayne - You are correct. Yours is not a proportioning valve as there was no need for one with the Studebaker system. It is a brake failure warning switch which activates the warning light on your dash whenever there is a loss of pressure in either your front brakes lines or rears. It was used on AMC cars from '67-'74 and is no longer available to my knowledge. Muscle Car Research LLC, (Google them) offers a complete repair kit, their part # AMC-Valve-Kit-3 for $27.00. Your switch can only be repaired if the cylinder bore is not corroded. The pistons do not come with the kit so yours need to be in good shape and reused. A word of warning - when reassembling the nylon bushing it is very delicate. Just tighten by hand. It doesn't retain fluid so it doesn't need to be leakproof. Hope this helps.
silverstude Posted June 13, 2022 Report Posted June 13, 2022 The Master Power Brake Combo valve balances Disk and drum application to prevent nose-dive and has a brake light switch built in.
WayneC Posted June 13, 2022 Report Posted June 13, 2022 Randy, I found the kit you referenced here: https://musclecarresearch.com/valve-kit-wagner-amc-dist-switch But, I don't think my distribution block has such parts as they show. The block does not come apart (cannot be disassembled) I did find a distribution block at Jegs that looks very much like the original in my car, for '67-'69 Camaro/Firebird/TransAM/Chevy II. I did order one some years back and found several of the threaded holes for brake line fittings were larger than for the Avanti. The GM block may be usable with thread adapter fittings. Regrettably i am getting too old and feeble to do much with my cars anymore, so my '71 may continue to sit. shown below is the old block compared to the (new) GM block.
Randy Atkin Posted June 13, 2022 Report Posted June 13, 2022 Wayne - I apologize. I compared your photo to mine and see it is not the same. Sorry. Maybe what I wrote will help someone else.
Zedman Posted June 17, 2022 Author Report Posted June 17, 2022 On 6/12/2022 at 8:04 PM, WayneC said: Thanks, I was hoping for a less-expensive (much simpler to implement) original replacement valve. Expand Hi Wayne- I wondered whether this one might be a good alternative.... https://www.summitracing.com/parts/clp-pv-2
WayneC Posted June 17, 2022 Report Posted June 17, 2022 I think the '67-'69 Camaro/Firebird/TransAM/Chevy II distribution block (with appropriate thread adapters where needed) is a better bolt-in possibility.
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