I just went out and looked...based on the markings, it looks like the fittings on the filter head are 3/8"; so are the ball valves and everything between the filter head and the T-fitting. The T-fitting has the one 3/8" port and the other two ports (the two that lead to the hose nipples) are 1/2". From there, find a hose to pipe adapter that's 1/2" NPT on one side and snugly fits a 5/8" hose on the other side
It's really sad how much things have corroded in the 11 1/2 years since I put that together...you almost can't read the numbers anymore, and I had to take some steel wool to the fittings to make them as legible as they are in the picture! The good news is, the pipework and the hoses are holding up very well
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Yes they are 1/2 with 5/8's nipples for the hose. I have this set up it works great but one thing not mentioned in the build thread was you need to be cautious of the clearance with the hood. I have a cowl hood and it comes within 1/4in of the hood.
You're absolutely correct, and I wish I could go back and edit the original post (unfortunately, it's written as an HTML file on OB's server as opposed to being a message thread, so one of the webmasters would have to do it). On my setup, the 90 degree fitting for the hose going to the water pump actually was in contact with the bottom of the hood
There's a paint spot worn off on the hood, and you can now see a flat spot on the flange on the fitting. No harm done, thank goodness, but it IS something to be careful of. If I were to go back and do it again, I'd drill the mounts for the filter a bit lower on the bracket, then clock things so there wouldn't be any chance of contact.
