Well-Known MemberHMEM Supporting Member
- Nov 19, 2009
- Reaction score
- Tucson, AZ
daddy like!The crankshaft base is the backbone that the 4x4 angle and bearing carrier end plates bolt to.
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The aluminum shoe bar supporting the engine will be replaced with some half inch steel stock as well as spacers under the rubber to gain clearance for a 4 in. steel flywheel. The heavier steel also bringing the center of gravity down.
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The taper collet lock on to the crankshaft is used, So to draw the flywheel off the collet for removal, a pair of 8-32 screws into the frame will pop flywheel off when servicing.
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Cutting in the taper. I set the compound to 7 Deg. and have at it. The collets used are Delrin with a single split cut across. I like brass or leaded steel here over C.I. or C.R. on these large parts and the Mini Mill and Lathe appreciate the ease of cutting these materials too!
Hi Longboy,Over onto the intake side, a set of individual valve blocks bolt to the intake ports of the heads. A short tube into the head and v-block with an O-ring seal around tube.
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A piece of painters tape make a good gasket here. I got a whole roll of this stuff so when I build a fleet of four valve V-12 engines.......it should last me! Four 2-56 screws join the halves.
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Will I need a five inch long piece of Delrin to mate the carb to the valve blocks here......or sumtin else?
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The fittings on the Ex. side tubing are not hardware store items. Made from 3/8 in brass hex, they are threaded 1/4- 28 into the ports and 5/16-24, male to female nuts. Tubing is 5/32 in. K&S products. A plumbers O-ring over the tube into the nut makes the seal and proves the concept of remote valve blocks for the hot exhaust side of the engine.
Thanks raveney. On the intake side of THREE BELOW, the valve action is atmospheric. Vacuum draw on the intake downstroke overcomes the valve spring pressure to open the valve for the cylinder charging of the fuel/ air mixture. I use some K&S .015 piano wire for these valve springs. The exhaust side is always a camshaft controlled cycle so the valve springs are stronger tensioned. Individual valve or multi- valve blocks can be plumbed and ported into the side of the cylinder heads making for a flat head designated design top end. I have also done with my INTERNAL BREEZE engine, a flat head configuration with valves in head.....but at 90 degrees to its cylinders. So not a traditional, recognized definitions of "flat head" or "side valve" engines where these parts world be in the engine block. Valve blocks as a bolt on reduces the height of vertical engines as a result over O.H.V. obviously. The camshafts are right on the sides of the block or frame...........and it is all exposed to the viewer like the open crankshafts when running. Now with exposed intake and exhaust runners in brass on THREE BELOW! That appeals to me as a builder! ...DaveHi Longboy,
Very nice tip on using painter's tape. I really admire your work and watched the videos on your you tube page. The remote valve block concept looks radically different than what I have seen. Could you explain how the intake valves and block work? Is it similar to hit or miss engines?
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