Thread: Sometime it takes a couple of tries...
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Old Jul 22, 2010 | 07:56 PM
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waldig
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Joined: Feb 2008
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From: VA
Talking Sometime it takes a couple of tries...
Been working for a while doing tests and track time to see if I could prove to Rob that I could get 40% more air thru his manifolds. He gave me his first set and off I went doing things like crossconnecting the intakes.

It became apparent to me that the intake was limited by the restriction in the wye pipe area. The s/c tries to blow into both intakes and the valves suck out of the head separately.
THis means that the air has to fill and be sucked out of the intake manifold, which is why Needswings make them much larger to hold more capacity.

I took the approach of crossconnecting them so that the wye pipes fed both manifolds and they shared the LOAD. THis allowed the intakes to have at least 1/2 restriction of the stock approach. Now both intakes supply air to the intake valves and thus the "pressure" stays UP better. This allows deeper charging of the cyclinders as they have very little pressure drop from the wye to the intake valve. Further there is much more storage so that the pressure does not fluctuate as much when each valve opens up on the intake cycle.

The photos show my latest crossconnect pipe which seems to allow better installation. Rob has seen the design and who knows if there are good enough results on the dyno, yall might could get u some. Now that Iam getting comfortable with the layout, I need to run off to the dyno for a spin. Work affords me little time, and this saturday were due for 102F..........Yikes

Photos should be self explanitory and informative. Its been a hoot to do and I figgured that It should be shown to all of u all. The work on the throttle body delay is getting bench time so this intake manifold project is considered mature and ready for the final exam, the dyno. Ill keep you informed as details appear. Wee having fun and doing good things.


Photos: intake manifold upgrade - CrossfireForum.org Gallery

Enjoy, Woody

History lesson: Torquing Offys Aplenty!
 
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