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F134 and Megasquirt

Discussion in 'Early CJ5 and CJ6 Tech' started by Desert Runner, Oct 3, 2006.

  1. Oct 3, 2006
    Desert Runner

    Desert Runner Member 2024 Sponsor 2022 Sponsor

    Hickory, Pa
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    I think we have decided to put a megasquirt EFI on our F134. I started on this project in the thread “My 65 Winter Project” but it is still going on. We have most of the body repaired. I have moved on to the axles, and am in the middle of doing the Knuckle stud conversion, and replacing the kingpin bearings. But we have been discussing what to do about the motor.

    I search the forums and found several threads talking about but it looks like no one here has done it. Correct me if I’m wrong.

    After reading, a lot, on the megasquirt website and forum. The only problem I see is what throttle body can I use? In the threads here someone mentioned using a K car tbi, are there any other choices?

    Jay
     
  2. Oct 3, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Roughly the same displacement as an Iron Duke or a GM2.2L
     
  3. Oct 12, 2006
    Desert Runner

    Desert Runner Member 2024 Sponsor 2022 Sponsor

    Hickory, Pa
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    OK, I bought an S10 Throttle body on ebay,
    http://cgi.ebay.com/ebaymotors/ws/e...20033244091&rd=1&sspagename=STRK:MEBI:IT&rd=1
    it has three of the sensors I need for the conversion, but it has a three bolt triangle pattern, ...... I don't suppose anyone knows of a three bolt to 2 bolt adapter??? I have been looking, but with no success, I may be able to machine one myself, but I was hoping to find something ready made.

    Jay

    p.s. I wonder if I paid too much for this thing???:rofl:
     
  4. Oct 12, 2006
    DanStew

    DanStew Preowned Merkin salesman Staff Member

    Lexington, South...
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    i think the adapter will ahve to be a custom job. probably not that hard to make. Hope to see the results soon!!!
     
  5. Oct 12, 2006
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
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    I would say uh, yes, you paid about twice whats its really worth.:D

    Jay I sent a pm about the megasquirt as we discussed a couple of weeks ago.
     
  6. Oct 12, 2006
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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  7. Oct 13, 2006
    Desert Runner

    Desert Runner Member 2024 Sponsor 2022 Sponsor

    Hickory, Pa
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    I guess I should have looked at adapters before I started looking at throttle bodies. Oh well, I like the look of the weber #2125 adapter, I'll have to see what type of throttle bodies will fit on top of it.

    Thanks guys ... you all make this project alot more fun and less stressful

    Jay
     
  8. Oct 13, 2006
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    Yeah, the 232/258 also use a YF, so that will fit if nothing interferes with the top half.

    You saw the 4-cyl adapter made from two plates and a piece of pipe?
     
  9. Oct 13, 2006
    Desert Runner

    Desert Runner Member 2024 Sponsor 2022 Sponsor

    Hickory, Pa
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    I did. and I was thinking something like this might work for me. I looked at other throttle bodies, and they are all twin 43MM bores and up. So this S-10 tbi that only has 1 43mm bore might work nicely, a couple of flat plates and a piece of pipe. :twisted: "Egore, get the big hammer"....

    Sorry, ;lost it there for a minute....need more [​IMG]
     
  10. Oct 13, 2006
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    I think you're on the right track with the S-10 TB. Using the 1V TB will make the geometry of the adapter much simpler than the 2V TB. And the next larger TB (I think) is for the 4.3L V6, so you'd be way oversize if you use that. The 134 is 2.2L, and the S-10 is 2.5L, so you're close enough that you should be easily able to dial it in.
     
  11. Oct 13, 2006
    willys59cj5

    willys59cj5 Sponsor

    Gilroy, CA
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    If you look in the fuel injection section of the ECJ5 gallery there are a few pics of the adapter I made. I used a dremel and a drill to make mine. I am currently running on megasquirt so if you have questions just shoot.
    Ryan
     
  12. Oct 13, 2006
    Executioner

    Executioner Member

    Reading,Pa, USA
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    If you don't mind the intrusion, what gains do you get from a Mega squirt on the F head???
     
  13. Oct 13, 2006
    Desert Runner

    Desert Runner Member 2024 Sponsor 2022 Sponsor

    Hickory, Pa
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    I realize that question was probably for willys59cj5, But I hope to get the best possible gas mileage. When I started this project, my 65 was not running, so I have no idea what the milage will was. On other threads it has been stated that the F134 with stock carb gets about 10 - 12 mpg. with the Solex and Weber 14 -16, and one person said they got 19. I hope to push that into the 20's with megasquirt.

    BTW the 65 has an F134 , 3 speed, D-18 with 5.38 gears... alas no overdrive yet.

    Jay
     
  14. Oct 15, 2006
    evanjm

    evanjm Yeah, it's got an F-head.

    Leesburg, VA
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    F-134 Fuel Injection

    Just wondering about this.... Would fuel injection even be possible on a F-134? Does anyone make a kit for this?

    I don't think i'd ever want to convert over to this on my old jeep, but it would be interesting to see how it is done...

    - Evan
     
  15. Oct 15, 2006
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    Interesting question. IMO EFI is a superior induction method (compared to carburetion) for any engine. Just look at the success of fuel injection in the marketplace. I've been to several large junkyards in CA that simply do not have any carburetors (I asked). You have to go to a specialty yard, or the pick-your-part, to find them. I expect part of this success is becasue emissions laws require the superior fuel control of EFI, but that doesn't lessen the desirable attributes of EFI.

    - better mileage - EFI can run much leaner at cruising speed, providing better mileage.
    - lower emissions - better fuel control means more complete combustion.
    - more power - the volumetric efficiency is still controlled by the throttle body (or venturi) size, but you can use a larger TB and still have good fuel control despite the low vacuum. The volumetric efficiency of the F134 is probably constrained by its intake tracts, but people have reported power gains with larger carbs, so the potential is there.
    - reliability - electronics are much more reliable than mechanical devices (ie carburetors). The only moving parts are the injectors and the fuel pump. Compare that to a carburetor, with various valves, diaphragms, springs, floats and levers.
    - simplicity - well, it makes sense to me. Use a computer and sensors to control fuel flow, rather than mechanical devices operated by vacuum signals.
    - position independent - EFI does not depend on gravity, so it will work fine at any angle or attitude. Esp. good for Jeeps.
     
  16. Oct 15, 2006
    Executioner

    Executioner Member

    Reading,Pa, USA
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    Thanks for the info, very interesting however the reason I went and bought a 65 vehicle was for the sole fact that emissions do not apply and the vehicle is totaly exempt from even a cursory check, and also I personally don't like the E part of EFI. A computer is perfectly fine by me to be sitting on my desk but keep it away from my car!
    But thats just me:hurrican:
     
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