Ok, here are some dyno numbers to chew on. Wize, Oldschool and Damon were asking for some comparative data on the ICH dual plane vs the MP337. I don't have the dyno sheets yet but here are the peak numbers.
The carb is Dwayne's Mighty Demon 850 that he was trying to dial in and it ended up working pretty good on this combo. The MD 850 has downleg boosters + 86/97 jets + .026/.026 hs bleeds. The carb was kept identical for all of these tests to make the only variable the manifold & spacer combination.
There are 3 manifolds being tested ;
ICH 440-2/ICH dual plane opened up to max wedge/MP 337
(1) 440-2 no spacer = 713 @ 4300/711.7 @ 5800
(2) 440-2 1/2in spacer = 719.3 @ 4600/715.9 @ 5700
(3) 440DP no spacer = 702 @ 4600/684.8 @ 5700
(4) 440DP 1/2in spacer = 712.9 @ 4200/687.8 @ 5600
(5) 440DP 1in spacer = 717.2 @ 4300/697.3 @ 5700
(6) MP337 no spacer = 712.8 @ 4600/701 @ 5600
(7) MP337 1/2in spacer = 717.2 @ 4500/701.8 @ 5500
(8) MP337 1in spacer = 716.8 @ 4300/702 @ 5700
The final numbers for mine which will run the MP337/1in spacer & 1050 Quickfuel are :
721.2 TQ @ 4500 & 705.5HP @ 5600 > 694HP @ 6000
Ron
