Ford F834 Posted May 18, 2018 Author Share Posted May 18, 2018 You are absolutely right, the large motor homes have these types of remote reservoir pumps. I have found 5 of them now, and they have the larger diameter remote reservoir hose like the 6.2 diesel. However, all 5 have so far been hydroboost with two return ports in configurations similar to mine, and all have the remote reservoir barb on the edge of the can rather than the back. I continue to check as they come into the yards though, as they each seem slightly different and I might just get lucky and find the “perfect” reservoir. Well... the mystery pump with the single reservoir barb out the back has been solved... Trent dig up a different thread which identified the application as a 1982-1984 Renault Fuego 😬. Yeah. Not something I would have stumbled across by trial and error. The A1 Cardone part number is 20-7989. Summit and eBay still have units available with the reservoir. They are slightly on the expensive side after shipping and a core charge at Summit, but at least they can be had. My concern is that the hydro boost applications came with the larger diameter reservoir barb and hose, and had two returns. This suggests that forcing all of the return and reservoir flow through the one smaller port might cause problems? What say you all? Perhaps order it and try to fit a larger reservoir barb to it? Link to comment Share on other sites More sharing options...
Gary Lewis Posted May 18, 2018 Share Posted May 18, 2018 Well... the mystery pump with the single reservoir barb out the back has been solved... Trent dig up a different thread which identified the application as a 1982-1984 Renault Fuego 😬. Yeah. Not something I would have stumbled across by trial and error. The A1 Cardone part number is 20-7989. Summit and eBay still have units available with the reservoir. They are slightly on the expensive side after shipping and a core charge at Summit, but at least they can be had. My concern is that the hydro boost applications came with the larger diameter reservoir barb and hose, and had two returns. This suggests that forcing all of the return and reservoir flow through the one smaller port might cause problems? What say you all? Perhaps order it and try to fit a larger reservoir barb to it? I am afraid that a single small barb might not be enough for the return. Having said that, I have the C2 pump from the 1995 F450 setting on my work table, and I could measure the ID of the two barbs on it to find out how much area they provide. Forgetting boundary flow, which makes a small diameter hole flow less that it would appear it should, we could at least get a number that might indicate the area needed to make it work reliably. I'm not going to be in the shop today, but hopefully will be tomorrow and will let you know what I find. Link to comment Share on other sites More sharing options...
Ford F834 Posted May 18, 2018 Author Share Posted May 18, 2018 I am afraid that a single small barb might not be enough for the return. Having said that, I have the C2 pump from the 1995 F450 setting on my work table, and I could measure the ID of the two barbs on it to find out how much area they provide. Forgetting boundary flow, which makes a small diameter hole flow less that it would appear it should, we could at least get a number that might indicate the area needed to make it work reliably. I'm not going to be in the shop today, but hopefully will be tomorrow and will let you know what I find. The returns are one thing. My ‘81 is getting by with just the one T’d port. However the remote reservoir connection is what I’m wondering about. The 6.2 diesels and motor homes with hydroboost have the bigger hose connecting the two. I read that one guy had problems with the pump making noise because the remote reservoir was too small. I’m guessing that may be why they have a bigger hose. Link to comment Share on other sites More sharing options...
IDIBronco Posted April 25, 2019 Share Posted April 25, 2019 The returns are one thing. My ‘81 is getting by with just the one T’d port. However the remote reservoir connection is what I’m wondering about. The 6.2 diesels and motor homes with hydroboost have the bigger hose connecting the two. I read that one guy had problems with the pump making noise because the remote reservoir was too small. I’m guessing that may be why they have a bigger hose. Removed as incorrect. Link to comment Share on other sites More sharing options...
Steve83 Posted April 25, 2019 Share Posted April 25, 2019 Removed as incorrect. IDK if this is relevant, but it's in my junkpile: https://supermotors.net/getfile/923605/thumbnail/sag9475.jpg Link to comment Share on other sites More sharing options...
Ford F834 Posted April 26, 2019 Author Share Posted April 26, 2019 IDK if this is relevant, but it's in my junkpile: https://supermotors.net/getfile/923605/thumbnail/sag9475.jpg Desirable for someone with a 460! Link to comment Share on other sites More sharing options...
Recommended Posts