Gentlemen: I recently purchased a rolled over 2022 from an auction. It runs; however, I am still looking for some of the small parts that were damaged (The larger plan is to build the Roxor drive train, etc. into/underneath a CJ5, converted to a CJ6).
I am having a bit of trouble finding a "vacuum check valve" that will fit into the brake vacuum unit. The hole in the vacuum unit is 1 and 1/16" (i.e. - 17/16"), and the barb for the vacuum line is 3/8". Is there a generic replacement? The original Indian check valve has a 7/8" O.D. that fits into the grommet in the vacuum unit. I have looked at the Dorman kit #80189, and it has a rubber grommet that will fit the hole in the vacuum unit; however, I cannot see how in the world the Dorman check valve can/will fit snugly into this grommet, and the smaller grommet in the Dorman kit will "not" fit the hole in the Roxor brake vacuum unit (The Dorman valve is also designed for a 1/2" vacuum line, but this could be adapted).
Idea #2: Can I remove the Roxor vacuum unit, make a steel cover for the Roxor check valve hole that has the correct size for the Dorman check valve, and then attach the steel cover over the Roxor's check valve hole, using silicon seal and sheet metal screws? This will allow me the correct size hole for the Dorman valve, and I don't "think" it will interfer with the diaphram inside of the Roxor's brake vacuum unit.(In studying the way vacuum units/"cans" are made, the diaphram inside does not contact the check valve hole or front face of the can, and in reaching inside the check valve hole and feeling the inside and thereabouts, I see no obstructions or potentially problematic parts or interferences.)
1. I have inquired of Dorman regarding their replacement check valve and the larger grommet size = Nothing.
2. I have inquired of CVS Girling in India regarding a replacement check valve = Nothing.
3. I have inquired of Raybestos regarding "their" check valves/replacements (i.e. - no dimensional standards offered, only applications) = Nothing
Idea #3: The closest thing I can find is offered by West Coast Classic Cougar for the FoMoCo "Midland Booster" for mid-60's Cougars/Mustangs and this check valve is .830" and it fits into a 13/16" grommet, and the grommet fits into a hole in the vacuum booster that is 1.040", which is close, but 1 and 1/16"( 17/16") would be 1 and .0625". but it might fit.
Any insights or previous experiences that might guide me?
Walt Banta