Ricko1966
+1y
I didn't ignore anything only said now I have the information I need to make my decision, After I look at everything I will make my decision. I have worked as a tech since 1981 worked in the machine shop,rebuilt engines and transmissions modified oiling systems for various reasons.Balanced and blueprinted motors,machined my own adapter plate and flywheel for the buick v6 into my porsche 911,have machined my own carb adapters for various applications,built stroker motors that I had to have pistons custom made for, worked at the GM dealership and the Volkswagen dealership,and am ASE certified,sorry I don't have a lot of mazda information memorized yet that was why I asked the question as to do I need the restrictor a guy on ebay selling heads said no, I wanted a second opinion. Haven't had time or inclination to go examine everything yet but when I do I will make a good repair. And FYI Aircooled VW type 1 had no provisions at all for an oil filter one common modification I would make was block the oil passage in the block [a restrictor with no hole] reroute the pump discharge through the pump cover use A,N, fittings and braided lines to an oil filter bracket back to the block where I would machine the main oil galley to accept an a,n, fitting for the freshly filtered oil to lubricate the engine. Is that cobbled up? or improvement before you decide you may want to read fords study on filtered engine oil done back in the early 60's. have a great day.