New 20b intake plenum and runners

gmonsen · 02-01-2011, 10:29 PM

So, we are finally going on the manifold. It was a pain getting the runners right. The final method was to make it in 2 halves and then weld them together. We tried every other way of doing it (thanks, Warwickben) and it didn't come out right. The first 3 of these looked perfect and measure out exactly. It was a bot more complicated than we thought. Again, its the tapering while bending that's so tough. Either one without the other works fine, but its tough to do them both together. These will be done this week and back to get put on the motor next week. I am very excited that we will see some exciting results.

Gordon

gmonsen · 02-02-2011, 12:50 AM

Victor is working thorough the night to get these done. They are made up in halves and welded together. That's the only way we could get the complex curves and tapering to work just right. Please don't mind the welds. They will not be visible once ground and polished and then painted.

Gordon

Look at the curves and taper of the runners. Very complex shape.

Notice how different the lengths of the runners were originally. The third rotor has a much longer runner than the others.

02-01-2011, 10:29 PM	#1
gmonsen The Ancient One Join Date: Mar 2008 Location: Eastern Pennsylvania Posts: 144 Rep Power: 18	So, we are finally going on the manifold. It was a pain getting the runners right. The final method was to make it in 2 halves and then weld them together. We tried every other way of doing it (thanks, Warwickben) and it didn't come out right. The first 3 of these looked perfect and measure out exactly. It was a bot more complicated than we thought. Again, its the tapering while bending that's so tough. Either one without the other works fine, but its tough to do them both together. These will be done this week and back to get put on the motor next week. I am very excited that we will see some exciting results. Gordon __________________ 1993 Rx7 R1 20b NA 1994 Rx7 20b supercharged project 1991 BMW 850 6 speed 1991 BMW E30 M3 Evo II

02-02-2011, 12:50 AM	#2
gmonsen The Ancient One Join Date: Mar 2008 Location: Eastern Pennsylvania Posts: 144 Rep Power: 18	Victor is working thorough the night to get these done. They are made up in halves and welded together. That's the only way we could get the complex curves and tapering to work just right. Please don't mind the welds. They will not be visible once ground and polished and then painted. Gordon Look at the curves and taper of the runners. Very complex shape. Notice how different the lengths of the runners were originally. The third rotor has a much longer runner than the others. __________________ 1993 Rx7 R1 20b NA 1994 Rx7 20b supercharged project 1991 BMW 850 6 speed 1991 BMW E30 M3 Evo II