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Thread: Whatever!!!!!!!!! Gearhead-EFI Edition

  1. #1711
    Super Moderator dave w's Avatar
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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
    Last edited by dave w; 02-16-2016 at 04:12 PM.

  2. #1712
    Fuel Injected! JeepsAndGuns's Avatar
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    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?
    79 Jeep Cherokee, AMC 401, T-18 manual trans, hydroboost, 16197427 MPFI system---the toy

    93 Jeep YJ Wrangler, 4.0L, 5 speed, 8.8 rear, homebrew hub conversion and big brakes, hydroboost, 2.5in OME lift, 31x10.50's---the daily driver

    99 Jeep WJ Grand Cherokee limited, 4.0L, auto, 2wd, leather and power everything, 99% stock---the long distance highway ride.

  3. #1713
    Super Moderator dave w's Avatar
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    Quote Originally Posted by JeepsAndGuns View Post
    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?
    The design shown is for the Vortec. My goal is "Bolt On OBD2" 4x for all Domestic V8's 1967 & up. See attached proto-type.

    dave w

  4. #1714
    Fuel Injected! steveo's Avatar
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    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.

  5. #1715
    Super Moderator dave w's Avatar
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    Quote Originally Posted by dave w View Post
    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
    Update photo.

    dave w

  6. #1716

  7. #1717
    Fuel Injected! JeepsAndGuns's Avatar
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    Nice work. Really interesting.
    Too bad we cant do CNP like that.
    79 Jeep Cherokee, AMC 401, T-18 manual trans, hydroboost, 16197427 MPFI system---the toy

    93 Jeep YJ Wrangler, 4.0L, 5 speed, 8.8 rear, homebrew hub conversion and big brakes, hydroboost, 2.5in OME lift, 31x10.50's---the daily driver

    99 Jeep WJ Grand Cherokee limited, 4.0L, auto, 2wd, leather and power everything, 99% stock---the long distance highway ride.

  8. #1718
    Super Moderator dave w's Avatar
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    Quote Originally Posted by JeepsAndGuns View Post
    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

  9. #1719
    Fuel Injected! JeepsAndGuns's Avatar
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    Quote Originally Posted by dave w View Post
    is an almost $1000 custom 48x distributor marketable?
    That's going to be a tough one. I guess it depends on the potential buyers. I know me personally, that would be out of my price range. But others, with limited options for mounting one on the crank/balancer, it might be a viable option.
    79 Jeep Cherokee, AMC 401, T-18 manual trans, hydroboost, 16197427 MPFI system---the toy

    93 Jeep YJ Wrangler, 4.0L, 5 speed, 8.8 rear, homebrew hub conversion and big brakes, hydroboost, 2.5in OME lift, 31x10.50's---the daily driver

    99 Jeep WJ Grand Cherokee limited, 4.0L, auto, 2wd, leather and power everything, 99% stock---the long distance highway ride.

  10. #1720
    Super Moderator dave w's Avatar
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    Quote Originally Posted by JeepsAndGuns View Post
    That's going to be a tough one. I guess it depends on the potential buyers. I know me personally, that would be out of my price range. But others, with limited options for mounting one on the crank/balancer, it might be a viable option.
    It comes down to quantity, if the production was say 10,000 48x distributors, the price would be about the same as other aftermarket performance distributors.

    dave w

  11. #1721
    Fuel Injected! 1BadAction's Avatar
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    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.
    2010 Porsche Cayenne GTS - DD
    1991 2500 Suburban - 454ci BBC tow monster
    1979 16' Action Marine/"Johnny Cash" Merc Bridgeport Champ Motor - Metalflake Maniac

  12. #1722
    Fuel Injected! mytmouz's Avatar
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    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...

  13. #1723
    Super Moderator dave w's Avatar
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    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

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