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rhjames rhjames is offline
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Join Date: Sep 2006
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interesting comments---

the injector flow on the video seems to be suggesting that at the rpm ramp up (while the plates are at WOT) the fuel flow is intermittent, not steady. at least, that's what I see. I'm not complaining about this, just curious why the dyno didn't "see" it..? In other words, the naked eye should not be able to pick up a reduction or stoppage of fuel flow above idle rpm. The injector appears to have, dare I say, hiccups through the video. It would be equally interesting to me, to see a slow motion video of the injector action. In slo-mo, I would expect to see the injector pop regularly, not flow off and on erratically as in the video..... just thinking out loud here---

as for the non-OEM fuel delivery, you're not the only one (in the 928 world) who has said they would not use anything but Porsche parts----another curiosity of mine. considering that fuel pumps have come a long way since the OEM parts were put in these cars, I would think that the BG or Aeromotive pumps would be more than enough to supply your engine. 428 cubes @ 7500 rpms is not much to feed, compared to some of the monsters we have in drag racing these days. We have been using a BG 400 on the Quick 16/32 car for over 5 years now, without any issues what so ever. That's one pump feeding a 1000hp 540 cubic BBC, weekend after weekend of racing. I would be more concerned about an OEM pump not supplying enough fuel (leaning out) or just plain failing, than today's modern pumps. One guy has even gone to the extent of using 2 OEM pumps (in parallel--3 pumps total) as a safeguard, but in my humble opinion, that too is unnecessary. Besides, the BG pumps are easily rebuildable--

I'm still curious about the rods--you're picture appears to show a rod/piston offset that would be standard Chevy rod offset?

--Russ
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Last edited by rhjames; 07-31-2009 at 01:03 PM..
Old 07-31-2009, 12:56 PM
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