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Lenny

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Lenny last won the day on June 23 2015

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About Lenny

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  • Birthday 03/17/1945

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    I'm 63 years old and retired. Happily married to my best friend Jeanne. We do and always have done eveything together including running my business. Spent pretty much my whole life developing products and manufacturing them. I thrive on building things. Have done it since I was about 12 years old. I have a fairly complete but basic machine shop in my garage. I have maintained a shop most of my life. I did race motorcycles when in my twenties, mostly hillclimbing. Managed to scrape out some championships and got lucky and placed second overall at the Widowmaker hillclimb near Salt Lake City, UT when I was about 22. I mountain biked about 40 miles a week for about 15 years but now i'm out of shape. I started out when very young building wheeled vehicles that would go off road. Now I'm revisiting my childhood with my Trooper which I'm having a blast with. I have as much fun reengineering things on it as I do using it. I live in Hurricane, UT. Moved here from Atlanta, GA and love it.

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  1. Lenny

    Fluids

    There is more to standard oil and synthetic oil then its breakdown. Oil has what is called film strength. Picture this example.Put a drop of water on a waxed surface. It will stay together as one drop. Take a wax blade, say a waxed windshield wiper and press it down on the center of the bubble of water. The water at first stays as one puddle with its center being pushed so that the water under the wiper is shallower. This shallower part becomes thinner and thinner as you push the wiper down and just before the wiper touches the waxed surface there is only a very thin film of water under the blade. In order for the blade to touch the waxed surface it has to press hard enough to overcome the film strength of the water at which time the bubble separates into two bubbles and the wiper is now in contact with the waxed surface. The stronger the film strength of the liquid the more pressure it takes to overcome this film strength and make contact with the lower surface. Synthetic oil has a much higher film strength and holds it up to a much higher temperature. When something is as poorly built as the differentials in the Joyners, direct contact of matting surfaces is likely to happen at some point. With the better film strength of the synthetic oils, this contact will require more pressure to overcome the its film strength and allow contact. Once the surfaces contact, your in serious trouble and looking at earlier failure. In general, synthetic oils allows you to be harder on your equipment and on worn parts, it will require more ware before contact is allowed. That's why standard oil is advised for break-in of an engine. With synthetic, the rings cannot make good contact with the cylinder walls, which is required to seat the rings. It takes much longer to break-in an engine with synthetic oil.
  2. Do not put new rings in without honing. They won't seat.
  3. Lenny

    Rear diff. For my 09 trooper T4

    If you ask anyone that has rode with me they will tell you that I heavily abused my Trooper also with Renegade gears. I also had 130 HP and ran 10x31 tires with no differential problems . Keep in mind that to just shim the diff isn't enough. Along with replacing the bolts you need to carefully align the gears, If they are miss aligned which was common on many diffs, the teeth don't fully engage putting higher stress on the portion that does engage.
  4. Lenny

    Rear diff. For my 09 trooper T4

    Hi Jeff If I were to send you an email with the diff instructions could you post them in the pinned area in my behalf. No longer selling the kits, the instructions should be available for everyone interested. Lenny
  5. Lenny

    Rear diff. For my 09 trooper T4

    Hi Jeff The straight cut gears are stronger but make more meshing noise. The curved teeth are for smoother and quitter operation. Lenny
  6. Lenny

    Clutch not releasing completely

    I caulked mine completely to seal it off. Main areas are around the starter and bottom plate.
  7. Lenny

    Trooper rear end

    Are your pins comming out or just breaking. If there coming out and then braking, the fix is all together different. Don't trust the wimppy little set screw, their tips can shear off. Use the punch set technique.
  8. Lenny

    Trooper rear end

    If your missing a spherical shim from behind one of the spider gears, It could cause the cross pin to break. When I provided diff upgrade kits, I would actually have the installer grind the center of the first cross pin shaft, weakening it maybe 10%. This was necessary in order for the spider assembly to be able to go back together after it was shimmed correctly, The factory didn't shim them right when new. Out of hundreds of kits I sold I never had anyone mention of ever having a pin brake. Sounds to me like you might have something else wrong.
  9. Lenny

    Swing arm bushings / bearings

    Grease them until it squeezes out. This helps keep the bearing surfaces clean. If you want to adjust the rear camper, fill in the holes where the wheel spindle bolts to the swing arm and re-drill. Just use a piece of round shaft welded in to fill. Measure your current camper and do a little trig to find where the new holes want to drill. You don't have to do both top and bottom holes, but either or. This is required if your swing arm is twisted. Its also a good way to balance the camper so it matches with the other side.
  10. Lenny

    Steering Box

    Re-drill ant tap a size larger. On the steering box above, 1.5:1 sounds awful fast for the trooper. If I'm right, that would be only about 135 degrees of steering wheel turn from stop to stop. Stock is about 2 turns and its still hard to turn. I had 3 turns from stop to stop on mine and it helped a lot. I don't think the power steering would be enough to push the 1.5:1 box.
  11. Lenny

    Broken Output Shaft

    I pulled my trany without removing the engine but I did need to slide the engine back some.
  12. Lenny

    Broken Output Shaft

    I always used 4 wheel drive on rough rocky climbs where rocks can do just what you described. As a matter of fact, I stayed in 4 wheel most of the time on all trails unless I wanted to break loose the rear wheels for power sliding turns. When 4 wheels are driving and one gets on a rock, it will keep rolling over it rather then spinning it out from under it as the other 3 wheels keep you going forward. When the wheel spins, the drive train slacks off and then as the spinning tire impacts down hard, things can brake. I've heard a lot of Trooper owners say how they don't need 4 wheel drive to climb a lot of tough climbs but that isn't the point. Its about taking the impact stress off the drive train.
  13. Lenny

    Fuel Line

    Polyethylene tubing is fine. Its more of a translucent milk color and you can still see thru it.
  14. Lenny

    Fuel pump alternative.

    Gosh, I think the stock injector is about 14-15 pound, I was running 26 pound injectors. I was able to get a lot of boost, up to about 11-12 pound. This was only possible with an after cooler and lowered compression. I was getting 130hp at the wheels and nearly 125pds feet of torque also at the wheels. I was hitting about 3/4 of that torque by about 1800rpms. The engine and driveline seem to be strong provided the diff is upgraded. Also I'm convinced that the best power by far is gotten by allowing a good dyno shop to do the tuning. My first dyno shop only found 76HP and $400 later said that was about the max from the engine. Ended up using Shaun Church from Church Automotive, he found the 130 for $350. There is a lot of HP to be found if you want to do the work. PS. And spend the money.


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