Search:

Type: Posts; User: armorer243

Page 1 of 2 1 2

Search: Search took 0.01 seconds.

  1. Thread: Turbo 084

    by armorer243
    Replies
    44
    Views
    33,808

    Re: Turbo 084

    My thought on the performance issue is that the higher the RPM the more air is going through the exhaust which spins the turbo faster, developing boost. If there is not enough exhaust to spin the...
  2. Thread: 4A084 Specs

    by armorer243
    Replies
    23
    Views
    55,310

    Sticky: Re: 4A084 Specs

    Other specs I have run across during my ignition conversion:

    Timing advance: 28-degrees before TDC (confirmed with a degree wheel)
    Compression Ratio: 6.8:1
  3. Thread: Turbo 084

    by armorer243
    Replies
    44
    Views
    33,808

    Re: Turbo 084

    .

    I think you are right, that tiny crossover handling two of the cylinders seems awfully restrictive. However I do recall someone mentioning that the engine does like a bit of backpressure. Can't...
  4. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    One thing I found out is that this engine does not like having its timing messed with. I must have gotten the trigger ring right on the money because with a fixed 28-degree timing the engine runs...
  5. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    So after a hellish couple weeks I was finally able to get some time in the garage. I was in a bad place and needed to feel some sort of achievement with something so I rushed this forward. The...
  6. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    The board will be able to run two sensors and set up a full sequential operation if you can figure out how to put a cam sensor on the engine. I suppose one could bore a hole in the timing cover and...
  7. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    Since a cam sensor is not easily done, I am running batch with a crank sensor only. If I did do a TBI I would have just bound one of the throttle bodies with an injector bung in it and called it a...
  8. Thread: Turbo 084

    by armorer243
    Replies
    44
    Views
    33,808

    Re: Turbo 084

    So now that this project is taking off, I have a question for you. Would you be interested in EFI if there was a guy that built an ECU with boost control built in? That is, assuming your solenoid is...
  9. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    That's correct, on the coil pack pin 1 fires one pair of plugs, pin 3 fires the other pair. Pin 2 is ground. However, if you do use these coils you will need to replace a small portion of the EDIS...
  10. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    I tried replaying to your PM but I didn't see it added to my Sent folder. Either way, I couldn't handle the chewed-up slotted head cap screws any more. Reminded me that some bugger who had no...
  11. Thread: Turbo 084

    by armorer243
    Replies
    44
    Views
    33,808

    Re: Turbo 084

    I'm interested in how this works out. Especially with cylinder head temps and the increased pressures associated with the turbo. Looking forward to updates!
  12. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    The boards would have everything populated for EFI and ignition, it would be your choice whether you would want to hook up the injectors and O2 sensor or not. You could use it as standalone ignition,...
  13. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    Thank you for the feedback, glad to know it is useful.

    A bit of progress to report the last couple days. The Speeduino v0.4.3 board has been assembled and put on top of an Arduino Mega2560 clone....
  14. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    What size do you have? My old girl is just a 9"x36 bench top rolled out of the South Bend Lathe Works in December 1948.

    Any insight you can provide as to how you guys use these engines is helpful....
  15. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    i know that the 300cc/min injectors seem very large, compared to what the readings that you and I am finding from these web pages with the injector calculator.
    but they claim that they have had...
  16. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    Weird that they say 300 cc's is the smallest. By my figuring those would be waaaay too large.

    I used excel to figure out the volume of air through the 84 cubic inch displacement at various RPM's....
  17. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    Now that the coils have showed up I am....... Disappointed...... I think the use of the Toyota coils might be the wrong way to go now that I see them. Here is why:

    3962

    3963

    3964

    They...
  18. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    A wee bit of progress to report today.

    I made a simple 4-tooth trigger wheel and attached it to the engine side of the rope pulley. The magnets wreaked havok with the hall effect sensor I am going...
  19. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    For spark, absolutely nothing wrong with waste spark which is how I am going to run it initially.

    My goal was to port EFI as well. The problem I am calculating is the injector sizing being an...
  20. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    crap..... I just had an epiphany. I can't run a trigger wheel from the magneto gear. It turns at a different speed than the camshaft.

    There goes that idea. Since there isn't any room inside the...
  21. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    I may have to look into that. I have a lathe but sometimes it doesn't make sense to spend an hour machining something it it can be purchased for $5.

    So after doing some reading I have devised a...
  22. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    Yep, a BMW starter is what I have coming. I am going to try reusing the factory housing and flywheel and fabricate up some new tin ducting. But since this will be going on a snowblower built from the...
  23. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    Thanks Bart, I appreciate the help. Luckily I won't have to broach the pulley, the manufacturer was kind enough to do it for me. All I have to do is cut they keyway on the crank.

    A little progress...
  24. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    Here are the specs on the coils:

    1. Part Number: UF247
    2. Quantity: 4 Pcs / Set
    3. Fitment:
    2000 - 2002 Chevrolet Prizm 1.8L L4
    2003 - 2008 Pontiac Vibe Not Fit Gt 1.8L L4
    2000 - 2005...
  25. Re: Electronic Ignition Conversion & Laying the groundwork for EFI

    A little progress made today. The coils are ordered, along with the wire connectors, Autolite 386 spark plugs, and the Speeduino board. Right now the engine is disassembled for cleaning and...
Results 1 to 25 of 26
Page 1 of 2 1 2