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904svo |
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#1
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904SVO ![]() ![]() ![]() Group: Members Posts: 1,119 Joined: 17-November 05 From: Woodstock,Georgia Member No.: 5,146 ![]() |
While trying to make the jigs to drill my heads for twin plugs I ran into a
major problem. Where is the plug going to be located on the bottom of the head. I made up this jig to located where the plug will be located. Angle jig ![]() Test jig installed ![]() Installed ![]() Bottom view ![]() |
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Katmanken |
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#2
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You haven't seen me if anybody asks... ![]() ![]() ![]() ![]() Group: Members Posts: 4,738 Joined: 14-June 03 From: USA Member No.: 819 Region Association: Upper MidWest ![]() |
Oh wow!
Just noticed that they are squareport exhausts too. This is going to be a fun project for you. If it was me and I had several scrap heads, I'd probably take a take a dremel and a drill to one side of the head to learn something about the available material, where you will break through, and where more material is needed. In the end, success will lie in decent machining fixturing. If a lot of welding is required, you may have to heat treat the heads to restore the precipitation hardening. A lot of people don't realize that when you weld aluminum that is T4 or T6, welding removes the hardening back to soft condition. That process requires a bit more heat than a cooking oven can produce. Good luck, Ken |
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