Mike Simard, 427cid small block Superformance Cobra
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- MegaSquirt Newbie
- Posts: 6
- Joined: Wed Sep 07, 2005 1:40 pm
- Location: Dacula, GA
Mike Simard, 427cid small block Superformance Cobra
Vehicle: Superformance Cobra
Engine: 427cid Ford 351w based engine. Dart aluminum block, 4.125 bore 4†stroke. 10.5:1, AFR205 heads
Injection: Individual 56mm throttle bodies. 50lb Delphi injectors. MSII v3.0 with EDIS ignition.
Description: This has been a 6 month project, mainly because of designing and building the throttle bodies and hardware from scratch. I started with a manifold for Weber IDA carbs, milled the mounting bosses at 12 degrees to lean the stacks towards the center and create a straighter intake runner. Since I measured the components to the engine when I built it, I was able to lay it out in a CAD program. With the runner angle determined I drew injectors pointing at the center of the intake valve and designed everything else around that. It made for some complex fuel rails that cross each other and the distributor wasn’t going to fit. The actual Megasquirt part has been fairly easy. The fuel pump relay seems to draw too much current to be switched by MS but other than that it’s been a breeze. The LC-1 conked out during the installation so I’ve been tuning the old fashioned way until the replacement arrives, that surely builds character. The difference compared to the old carb is amazing. I expected the driveabilty but the overall power increase is a surprise. The one area of tuning that concerns me at the moment is the cranking pulsewidths and afterstart enrichment. The EDIS has been uneventful, it just started working immediately and has no issues. Magnecor supplied some custom plug wires, I couldn’t start serious tuning with the junkyard wires that came with the EDIS. I’ll add some pics later.
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- MegaSquirt Newbie
- Posts: 6
- Joined: Wed Sep 07, 2005 1:40 pm
- Location: Dacula, GA
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- MegaSquirt Newbie
- Posts: 6
- Joined: Wed Sep 07, 2005 1:40 pm
- Location: Dacula, GA
Success story:
http://www.msefi.com/viewtopic.php?t=17252&highlight=
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- MegaSquirt Newbie
- Posts: 6
- Joined: Wed Sep 07, 2005 1:40 pm
- Location: Dacula, GA
Success story:
http://www.msefi.com/viewtopic.php?t=17252&highlight=
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- MegaSquirt Newbie
- Posts: 6
- Joined: Wed Sep 07, 2005 1:40 pm
- Location: Dacula, GA
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- MegaSquirt Newbie
- Posts: 6
- Joined: Wed Sep 07, 2005 1:40 pm
- Location: Dacula, GA
Success story:
http://www.msefi.com/viewtopic.php?t=17252&highlight=