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Well it has been quite a while since I have been around here. But i am back and many new (HA HA old) Projects to work on. But this one is a big one, it is dealing with the EA81 Hydraulic valve big bore motor. Well I could use some Intake and Exhaust valve dimensions so that I can cross them to the correct valve. Since I know that this is a Hydro motor I dun want to get the wrong thing here after all. There are not many options out there for the EA81. Parts are scarce. (I Know I know swap it to a EJ. I will get there and remember I want to keep this one as OE as possible.) So any help would be great. Things I need Valve Dimensions for the EA81 big and small valve head. Valve Part numbers I can cross reference. Or do I take a plunge and buy the 35 dollar set of valves on ebay. A little about the BRAT. 1) I bought it in 1996 for my mother with 120,000 miles on the clock for $2000 2) It has been in daily service until 2008 and then driven here and there until mothers death when it sat for a couple years. 3) Yes it is a 1983 GL with all the toys, camper, and bull bar. In black. 4) Question? Why does it have a hydro valve motor out of a latter car. Answer. In 2001 when I moved cross country I had another BRAT at the time a 1985 model with a strong engine in it. Her engine had very low oil pressure and even with a new pump it did not come up. So the new pump went on the 165K Hydro Motor and into the car it went. It is now at 224,000 the motor was put in about 140,000 So yeah it is due for valves.