Hydroboost Mounting Plates

[El Campo]

I am going to buy those same fittings. One thing that I do not know yet because I have not gotten them yet is about the diameter of the hole in the 5/16 fitting. This has to be the same diameter as the stock nipple had or it can lead to instability in the system from what I have read from people who have done a ton of these. It probably already is but would be something worth checking out. Otherwise it is a good idea to drill it out.

[AusTx68]

Originally Posted by El Campo

I am going to buy those same fittings. One thing that I do not know yet because I have not gotten them yet is about the diameter of the hole in the 5/16 fitting. This has to be the same diameter as the stock nipple had or it can lead to instability in the system from what I have read from people who have done a ton of these. It probably already is but would be something worth checking out. Otherwise it is a good idea to drill it out.

Interesting point. At a minimum, I would think the diameter matches the side being adapted (5/16). Any smaller would restrict flow. I'm betting some smart engineer designed them to support the proper flow.

I ordered the Ebay fittings this morning. I still need the TFE hose and 90 degree 6-AN fittings. I plan to flip the hydroboost so the fittings are on the bottom. I think that would make for a cleaner install. Does anyone know if flipping it will cause a problem?