I've been working in CAD to relocate the crank trigger to the distributor. Its a sandwich design, add the crank trigger between the distributor base and distributor cap. See attached pics. Proto-type is in the machine shop.
dave w
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I've been working in CAD to relocate the crank trigger to the distributor. Its a sandwich design, add the crank trigger between the distributor base and distributor cap. See attached pics. Proto-type is in the machine shop.
dave w
Interesting. I am assuming that is for the vortec engines? Or more specifically, for older engines wanting to run the vortec fuel injection that would originally have the 4x crank trigger?
i got my bike back on the road and decided to start modifying my old honda 4 banger a bit, a bit of porting, new headers, pipe, intake, etc.
totally broke the VE in its factory sealed ecm. small high revving engines are really sensitive. now i'm seriously lean in the first 4000rpm (basically it's all air, feels like 1ft/lb of torque), making driving in traffic a challenge. but everything above 4000 it takes off like a monster and hits fuel cut at 190mph+ like it needs more gear. fun but not practical.
this is oldschool honda, so the ecm is pretty much welded shut, so you have to go either standalone or piggyback. i found a really awesome oldschool fi tuning tool from the past on ebay for 20 bucks. blast from the past.
these were the s#%t back in the early 2000s when fuel injection hit sportbikes, then people started wanting 3d tuning.
the most caveman simple fuel controller, it connects in parallel with your injectors, and tries to simulate carb tuning ranges with three potentiometers by reading incoming pulsewidth and extending it slightly
basically turn one of three screws to jack up fuel at low, mid, or high rpm. might be like a sledgehammer instead of a wrench, but it'll be nice to tune with a screwdriver instead of a computer for a change.
looks pro so far!
Nice work. Really interesting.
Too bad we cant do CNP like that.
All is not lost on CNP, I'm thinking a Large Cap HEI diameter distributor would be needed for the 48x CNP trigger wheel. I've kicked around the idea of having the CKP and CMP sensors bottom mounted vs. side mounted like the distributor pictured for the 48x trigger wheel. The challenge is keeping the trigger wheel small enough for the CKP sensor to achieve 6000 RPM resolution, yet be a piratical diameter like the large cap HEI diameter. The thought I have, is an almost $1000 custom 48x distributor marketable? The CKP sensor housing pictured is nearly $200, because the material I selected was high temperature nylon - glass filled. The 3D printing process I used to make the CKP housing printed is called Selective Laser Sintering (SLS) http://www.3dsystems.com/quickparts/...-sintering-sls
dave w
I'm looking into driving a MS3, full sequential and using coil near plug with 8.1 valve covers and coils... I've toyed with the idea of doing my own using my billet MSD dizzy as a base.
I just checked and although I come on this board nearly every day I haven't actually posted since Jan. of 2015. Thanks to everyone that helped me in the past and keep up the good work...
Couple pics of my crank trigger bench testing. Seems to work on the bench. The pic showing 2466 RPM's is the max speed my electric drill can spin the distributor.
dave w