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1970 Jeep Rebuild

Discussion in 'Builds and Fabricators Forum' started by Rozcoking23, Feb 8, 2011.

  1. Jun 17, 2016
    tarry99

    tarry99 Member

    Northern California
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    Have you checked for air or bled the hydraulic system?

    Normally you want the clutch engagement to start just off the floor say a 1/2"-1.5"...............3 inches off the floor is too high but also uncomfortable .............and in your last sentence you say it was engaging at the top of the stroke ......again not where you want it...............your problem seems to be in the linkage or in your case where the slave is now mounted whereby the stroke is out of sink to the pressure plate.
    You say you changed your pressure plate , did you check the finger height between the two? More than likely they will not be the same.

    You need to go back and change the position of your slave ............in your case I think you need a longer rod or move the slave starting position closer to the fork. That will make the clutch pedal release event start earlier and also finish sooner.
     
  2. Jun 17, 2016
    Rozcoking23

    Rozcoking23 RUN & GET BIT! 2024 Sponsor

    Stockton, CA
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    I was thinking the same thing about air in the system, but I did not disconnect the slave from the master. I will go and bleed the system to see if that helps prior to doing anything else.
    It's drivable the way it is, just feels like clutch is dragging when I pull up to stop sign.
    I will try bleeding the system and report back.
    Thanks for the response.
    Rob
     
  3. Jun 17, 2016
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Liberty Lake, WA
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    Since the only variable between before and after is the pressure plate, I'd guess that's the issue. Did you compare old and new side by side before installing?

    I've noticed that different pressure plates for these engines have had two different bends on the fingers of the diaphragm. Some are flat and lay parallel to the flywheel when mounted, and others have a bend in the fingers and stick out proud of the pressure plate when mounted.

    Is it possible your old PP had a slightly different design?

    Maybe that explains the 2(?) different length throw out bearings that are also available? Maybe you are running the short TO bearing, and the longer one would fix your issue.
     
  4. Jun 17, 2016
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Liberty Lake, WA
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    Disclaimer: I'm going off of memories that are ~22 years old, so I might be totally wrong and talking out my butt.
     
  5. Jun 17, 2016
    Rozcoking23

    Rozcoking23 RUN & GET BIT! 2024 Sponsor

    Stockton, CA
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    I didn't look at the two side by side prior to putting it back together, I thought they were all the same....guess not.
    I was useing a center force dual friction clutch prior, with the heavy Duty pressure plate.
    The pressure plate I'm useing now came with the motor and was balanced with the motor.
    I did get the clutch worked out..... Bleed the system and it feels better.
     
  6. Jun 18, 2016
    Rozcoking23

    Rozcoking23 RUN & GET BIT! 2024 Sponsor

    Stockton, CA
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    I took it for a drive today and put about 55 miles on the motor. I varied the RPM's and the speed to help seat the rings. It ran about 185-190 degrees while driving in the country and in town. It idols with 30lbs oil pressure (650 RPM's) and runs about 45lbs at speed, (2000 RPM's). I still need to pull the 180 degree thermostat and put in the 160 degree. I'll let the motor cool off a little and go out and check the lash on the valves to make sure they are still where they need to be. I'll also check the torque on the heads and other components.
     
  7. Apr 10, 2023
    Rozcoking23

    Rozcoking23 RUN & GET BIT! 2024 Sponsor

    Stockton, CA
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    I’ve had an issue with overheating while crawling. I was using factory style water pump. I dug the old Flowkooler off my old motor in the shed. After looking at it decided to by new one.
    IMG_2357.jpg ' IMG_2358.jpg ,
    IMG_2359.jpg
    I received the new Flowkooler last week, quite a bit of a difference in design.
    IMG_2377.jpg
    IMG_2378.jpg
    IMG_2379.jpg
    It will be a minute before I get it installed, sitting on couch healing from knee surgery.
     
  8. Apr 12, 2023
    vtxtasy

    vtxtasy oldbee 2024 Sponsor 2023 Sponsor

    Tucson, AZ
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    I looked in to the Flow cooler. Still not completely sold on it. It does get some bad reviews and the QC doesn't seem up to par. I don't believe a higher
    flowing pump will cure an overheating problem. It may make it worse. Water needs time to linger in the radiator to remove the heat.
    Heal quickly and let us know how it works out.
     
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  9. Apr 12, 2023
    Renegade ll

    Renegade ll Member

    Thayne Wyoming
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    Wow I am just in awe of your build. You have some great skills!!!!
     
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  10. Apr 12, 2023
    Rozcoking23

    Rozcoking23 RUN & GET BIT! 2024 Sponsor

    Stockton, CA
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    Thank you, but if it wasn’t for all the knowledge on this site I would not been able to finish the build.
     
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  11. Apr 15, 2023
    Rozcoking23

    Rozcoking23 RUN & GET BIT! 2024 Sponsor

    Stockton, CA
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    before my surgery, I got my heat shields made and put in. Didn’t get any pics of the shields before installation.
    All my wiring and gas lines run down frame on drivers side. I only had about 2.5” of clearance between fuel lines and down pipe of header.
    IMG_2393.jpg '
    IMG_2394.jpg
    IMG_2394.jpg
    This is a little further back where I have my cylinoids for my duel fuel tanks.
    IMG_2395.jpg IMG_2397.jpg

    also put shield on muffler as it sits right below fuel lines going into my under seat tank. IMG_2398.jpg
     
  12. Apr 20, 2023
    Rozcoking23

    Rozcoking23 RUN & GET BIT! 2024 Sponsor

    Stockton, CA
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    I went out into the garage today and installed the new Flowkooler water pump. At an idle with just the mechanical fan it has enough force to hold shop towel to grill. This is without the fan shroud installed. I didn’t get a pic but prior with fan shroud installed it wouldn’t hold the towel to the grill. When I turn the electric it really moves air.
    IMG_2415.jpg
    This is without the fan shroud.
    IMG_2399.jpg
     
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  13. Apr 20, 2023
    Rozcoking23

    Rozcoking23 RUN & GET BIT! 2024 Sponsor

    Stockton, CA
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    soooo…the new heat shield that I made to cover my electric solenoids was pushed to far in and shorted out to the hot leg. Melted wire from hot post all the way back to dash switch. This did have a 20 amp fuse inline, it did pop it but not before it melted several other wires that it was bundled up with. Had to dig back into the wiring harness and chase down the wires that were damaged. Spent 4-5 hours doing this, but it’s up and running again.
    ' IMG_2404.jpg IMG_2402.jpg IMG_2400.jpg
     
  14. Apr 21, 2023
    vtxtasy

    vtxtasy oldbee 2024 Sponsor 2023 Sponsor

    Tucson, AZ
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    Does the Flowcooler put put the snout of your water pump closer to the radiator? Trying to figure out why you are showing the air drawn through the radiator.
    Sorry about the wiring mishap. I'll bet there were a few choice words for that. I used all sealed relays with weather pack connectors. No exposed connections.
    Fully custom harness as I knew I would just hack up a store bought one. The fuse block is from an '86 Fiero.
     
  15. Apr 21, 2023
    Rozcoking23

    Rozcoking23 RUN & GET BIT! 2024 Sponsor

    Stockton, CA
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    No the Flowkooler is same depth as factory. It’s drawing a lot of air through the radiator at a idol, just trying to figure why it was overheating while crawling prior.
    I put the fan shroud on last summer, because of the overheating issue when not moving fast. Prior to the fan shroud it was drawing a lot of air through the radiator, enough to hold shop towel. When I put the shroud on it wasn’t drawing enough to hold up the shop towel. A lot of research showed the fan sat too deep in the shroud with no part of the blade on the outside to help draw the air. I’m sitting about 1-1/2” off the radiator which is about right.
     
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  16. Apr 21, 2023
    vtxtasy

    vtxtasy oldbee 2024 Sponsor 2023 Sponsor

    Tucson, AZ
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    Strange that it made such a huge difference. I was taught in a/c to center the fan in the shroud. Some would blow out the side and others straight up. Blade, shroud design and objects
    in path of the drawn air would affect overall air movement. I played with quite a few and never found a solution that worked in every case.
    Are you going to figure a way to use the fan shroud or just try without it? Glad to see that knee isn't holding you back.
     
  17. Apr 21, 2023
    Rozcoking23

    Rozcoking23 RUN & GET BIT! 2024 Sponsor

    Stockton, CA
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    I’m not done trying to figure out the shroud yet. Gives me something to think about while sitting around.
    Knee is feeling pretty good. Wife was gone yesterday so I was able to sneak out to garage.
     
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  18. Apr 22, 2023
    Norcal69

    Norcal69 Out of the box thinker 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Northern California
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    Once you get a shroud on it you probably won’t need the e fan. I have the champion direct for radiator on Steve’s 71 with stock shroud and stock water pump. No cooling issues and it holds a shop rag in the grille at idle.
    Jeepster parts guru has reproduction fan shrouds. Not cheap but worth the money.
     
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  19. Apr 23, 2023
    Rozcoking23

    Rozcoking23 RUN & GET BIT! 2024 Sponsor

    Stockton, CA
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    I have the reproduction shroud from Jeepster parts. I put it on last summer running it with the Champion radiator and stock water pump. It would hold the shop rag to the grill prior to the shroud install after the install it wasn’t drawing the air enough to hold the shop rag up. I pulled the shroud off when I installed the Flowkooler water pump and now it’s pulling enough air to hold the shop towel up. I did put on the electric fan on a thermostatic switch with an override switch to turn it off, for peace of mind while crawling on trails or in town traffic. I had my daughter drive me around today, (can’t use the leg for clutch), it was 82 degrees out and we dropped it in 4 low and crawled the levees for an hour and it never got above 190 degrees, even with the electric fan turned off, last summer it would been above 200 degrees.
    in reading numerous articles I think my fan sat to deep inside the fan shroud to properly pull air through the radiator. My fan sits about an 1 1/2” off the radiator and about 1” inside the lip of the shroud, with about 3/4” from tip of blade to shroud. I am using a 1” spacer on my fan to clear the vacuum advance on my electronic distributor, so that might be why I’m sitting inside the fan shroud.
    I’m hoping I have solved my problem with overheating while crawling by installing the new water pump with the back up electric fan, we will see with time.
     
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  20. Apr 23, 2023
    vtxtasy

    vtxtasy oldbee 2024 Sponsor 2023 Sponsor

    Tucson, AZ
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    If I remember correctly, you have a DUI extended distributor. This opens up many possibilities for mounting. It seems like most want to point the vacuum advance
    at the radiator and deal with the problems associated with that configuration. I can kind of understand it when using the stock Delco and wanting access to the little
    window, but what if there was no window? I also have the DUI. My canister points at the power steering pump. No fan spacer. I cut the numbers off the LiveWires
    and wired the lengths as needed. Don't need no stinking numbers.
     
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