cquisuila Posted January 26 Share Posted January 26 (edited) Hello I wish to put a coolant revocery system on my riviera 1966. Do you have reference of model for the specific cap to fit in this case ? MY dimensions of actual cap : Filler Neck Depth 1.18 in Filler Neck Height 0.75 in Filler Neck Inside Diameter 1.53 IN Filler Neck Outside Diameter 1.97 IN Height 1.14 IN Pressure Rating 16 PS Edited January 26 by cquisuila (see edit history) Link to comment Share on other sites More sharing options...
Barney Eaton Posted January 26 Share Posted January 26 You should not need to do anything with the radiator filler or cap. The hose from the filler goes to the recovery tank. Depending on your choice of recovery tanks, some have the hose line molded into the tank, if not the hose should go to the bottom of the tank. 1 Link to comment Share on other sites More sharing options...
cquisuila Posted January 26 Author Share Posted January 26 20 minutes ago, Barney Eaton said: You should not need to do anything with the radiator filler or cap. I was told about a different cap to different pression but perhaps it is not exact Link to comment Share on other sites More sharing options...
RivNut Posted January 26 Share Posted January 26 You will need a cap that allows coolant to flow both ways. From the radiator to the overflow tank when the engine gets too hot, then allows the water to flow back into the radiator when the water temperature and pressure goes back down. 1 Link to comment Share on other sites More sharing options...
1965rivgs Posted January 26 Share Posted January 26 You need a cap with two seals, not just one. This enables the system to pull coolant back into the radiator as the system cools. Tom Mooney 1 Link to comment Share on other sites More sharing options...
cquisuila Posted January 26 Author Share Posted January 26 2 hours ago, 1965rivgs said: You need a cap with two seals, not just one. This enables the system to pull coolant back into the radiator as the system cools. Tom Mooney Exemple trade mark ? Link to comment Share on other sites More sharing options...
RivNut Posted January 26 Share Posted January 26 (edited) 18 minutes ago, cquisuila said: Exemple trade mark ? Just go to your jobber and tell the counter person you want a cap for a radiator that has a recovery tank. Or “Google” it. If your cooling system is in good shape and you only fill your radiator to the top of the core, you shouldn’t need a recovery tank. Edited January 26 by RivNut (see edit history) Link to comment Share on other sites More sharing options...
cquisuila Posted January 26 Author Share Posted January 26 I like a revovery tank to verify the efficient system cooling Link to comment Share on other sites More sharing options...
RivNut Posted January 26 Share Posted January 26 45 minutes ago, cquisuila said: I like a revovery tank to verify the efficient system cooling The original system is efficient IF everything is in good shape. If it’s not in good shape, the recovery tank is just a band-aid, not a cure. Link to comment Share on other sites More sharing options...
Wayne R Posted January 27 Share Posted January 27 (edited) This help you a little better,--but as as Ed said all original radiator and coolant items in your ,car have to good --no leaks etc to work properly. Would also like to let you ,but you probably know, when you first start and run your Buick after completion turn your heater on, in the hot position so it will let the water flow into your heater core and hoses,this remove any air bubles ,air locks in the system. Edited January 27 by Wayne R added item (see edit history) 1 Link to comment Share on other sites More sharing options...
cquisuila Posted January 29 Author Share Posted January 29 Link to comment Share on other sites More sharing options...
EmTee Posted January 29 Share Posted January 29 Yes, that one will work with a coolant recovery tank. It has the small second valve in the center. Link to comment Share on other sites More sharing options...
cquisuila Posted January 29 Author Share Posted January 29 AND for the recovery recipient < entry from the top or bottom of the BOTTLE, that doesn't matter I think? Link to comment Share on other sites More sharing options...
EmTee Posted January 29 Share Posted January 29 The hose between the radiator and recovery tank must always be full of coolant to maintain the siphon. Either attach just above the bottom of the tank (to allow particles to settle out) or, if attached to the cap like the picture above, it should have a tube extending down into the tank. Link to comment Share on other sites More sharing options...
cquisuila Posted January 29 Author Share Posted January 29 SORRY (little stupid) but what's the difference between one cap 1 seal and a cap 2 seals on the radiator ? because there is only one outer A on the radiator and not on the cap... on my existing radiator there is not a recovery tank and just a hose in outer A with a single seal cap on my radiator so what is the point of the double seal ? Link to comment Share on other sites More sharing options...
RivNut Posted January 29 Share Posted January 29 Each is a one way valve. One seal allows for expansion from the radiator into the overflow tank, the other allows for the radiator to siphon from the overflow tank back into the radiator. 1 Link to comment Share on other sites More sharing options...
cquisuila Posted January 29 Author Share Posted January 29 1 hour ago, RivNut said: Each is a one way valve. One seal allows for expansion from the radiator into the overflow tank, the other allows for the radiator to siphon from the overflow tank back into the radiator. ok the double allows round trip radiator-tank 1 1 Link to comment Share on other sites More sharing options...
cquisuila Posted February 1 Author Share Posted February 1 i just buy a bottle😁 Opel Mokka For Buick Encore For Chevy Trax 95201979 95269001 Link to comment Share on other sites More sharing options...
EmTee Posted February 1 Share Posted February 1 This looks like a modern 'surge tank'. I'm not sure that it is really what you need. It may work, but, it is going to be harder to mount than a tank having a more vertical orientation. This is designed to be held under system pressure (i.e., 15 psi), whereas a simple overflow tank is vented directly to atmosphere and simply provides additional volume for coolant overflow while maintaining the siphon between the recovery tank and the radiator. 1 Link to comment Share on other sites More sharing options...
cquisuila Posted February 1 Author Share Posted February 1 9 minutes ago, EmTee said: This looks like a modern 'surge tank'. I'm not sure that it is really what you need. It may work, but, it is going to be harder to mount than a tank having a more vertical orientation. This is designed to be held under system pressure (i.e., 15 psi), whereas a simple overflow tank is vented directly to atmosphere and simply provides additional volume for coolant overflow while maintaining the siphon between the recovery tank and the radiator. I will see and put the homemade assembly system with the two attachment tabs available on the tank Link to comment Share on other sites More sharing options...
Barney Eaton Posted February 1 Share Posted February 1 Someone may have covered this in their post......... If the engine get hot enough to push coolant out the overflow (controlled by a pressure cap) that coolant goes into the overflow or catch tank. When the engine cools down a vacuum is created and the coolant is sucked back into the radiator. The second valve allows the coolant to return to the radiator The above is why the hose or connection to the coolant overflow tank must be at the bottom so air is not sucked into the radiator..... that is also why the overflow tank should always have maybe 1/3 of its volume filled with coolant. As someone noted above, so it does not suck air. Link to comment Share on other sites More sharing options...
cquisuila Posted February 1 Author Share Posted February 1 position tank ? 39 minutes ago, Barney Eaton said: Someone may have covered this in their post......... If the engine get hot enough to push coolant out the overflow (controlled by a pressure cap) that coolant goes into the overflow or catch tank. When the engine cools down a vacuum is created and the coolant is sucked back into the radiator. The second valve allows the coolant to return to the radiator The above is why the hose or connection to the coolant overflow tank must be at the bottom so air is not sucked into the radiator..... that is also why the overflow tank should always have maybe 1/3 of its volume filled with coolant. As someone noted above, so it does not suck air. is it good ? Link to comment Share on other sites More sharing options...
Barney Eaton Posted February 1 Share Posted February 1 I believe you have it correct........... it should work fine as shown. 1 Link to comment Share on other sites More sharing options...
Barney Eaton Posted February 1 Share Posted February 1 One last comment I have seen modern systems where the coolant recovery tank was also intended to be pressurized. The recovery tank had a filler much like the radiator and had a pressure cap. the radiator also had a pressure cap (which was probably dual valved) many new cars have the radiator cap covered with trim pieces and they must be removed to see and remove the radiator cap. These factory recovery tanks were heavy duty molded plastic. 1 Link to comment Share on other sites More sharing options...
Rivdrivn Posted February 1 Share Posted February 1 This one has been on my car since the 1970’s 1 Link to comment Share on other sites More sharing options...
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