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Old 02-13-2020, 09:55 AM   #1
88Stanger
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Join Date: Mar 2015
Location: Washington State
Posts: 1,644
Hydroboost dual return lines and 1 way to handle them

When running a Hydro boost brake system you end up with really 2 return lines that must go back to the power steering reservoir and pump. Typically they supply a "T" fitting to convert this to a single. On my "69 C10 i used all new PTFE lines (-8AN) and then i got a "Y" fitting to try to help the possible issue with the two coming into one and the troubles some have mentioned with this. The "Y" seems to work and maybe the larger -8AN helped, but on my "66 C10 i was trying to find a better solution. I know that there are some res. with 2 return lines possible, but i really like running all AN fittings and that i am having a huge issue with the pump i have now. The return line existing is in the middle of the damn Res. and this is causing all kinds of interference with my new March Pulley serpentine belt conversion, so i am going to remove the existing return line, weld up the hole left, and i bought 2 -6AN bulkhead fittings. This will allow me to find to places on the res. that i can insert these and tada, two AN fitting returns.
I got the idea after i bought a bulkhead fitting from POL that sells one specifically for this issue with Hydroboost, but theirs is basically a barbed like fitting, but it should work also if you did not want to go all AN.
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