355 Engine Height | Page 2 | FerrariChat

355 Engine Height

Discussion in '348/355' started by eulk328, Feb 6, 2017.

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  1. Dave rocks

    Dave rocks F1 World Champ
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    Many guys here have done this with a 4 post so I'd say it's fine but Mitch (yelcab) is an expert at it and he would be the better one to ask as he has done this many times.

    Perhaps he will chime in - if not, send him a PM.
     
  2. SoCal1

    SoCal1 F1 Veteran
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    We just used movers dolly
    When I was young they would just drop the motor on me and pull me out on the creeper

    Far as lifts go either is fine

    I am getting both, a 4 poster for the front driveway and a 2 poster in the rear I can use on bikes and buggys


    BTW why is a new porsche parked in front of my house? icky
     
  3. eulk328

    eulk328 F1 Rookie

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    Most (all?) of the guys that I've seen use a 4 poster on a 348 or 355 don't raise the car very high. Of course the car doesn't weigh anymore when you raise it higher but it seems you must be changing some of the dynamics and leverage on the lift if you raise it high up. Also probably some jerkiness when you start and stop the lift and it locks into place when the car is higher up would be a little more "creepy" :)

    If you're reading this, what say you, Mitch?


     
  4. Dave rocks

    Dave rocks F1 World Champ
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    Hanging the car off the ass end of a 4 post is really no different than a 2 post and the same jerky motion is present in both :)
     
  5. eulk328

    eulk328 F1 Rookie

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    yeah, kinda sorta. Two posters were designed/engineered with the understanding the front and rear of cars will be hanging past the lift points (and cars with different weight distribution). I'm sure when the four posters are designed/engineered those people aren't thinking some crazies would be hanging the heavy rear end of some car off the end of their lifts.

     
  6. drbob101

    drbob101 F1 Rookie
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    You are never lifting the unsupported, engine containing, cantilevered rear of the car. The rear is projected off the lift and and that point the engine is supported via your dollies/cart and the lift point of the car is also supported.

    When the lift is activated it is lifting the car sans engine. The projected part is the empty engine day without bumper. The balance of the car is fairly evenly didtributed on the lift albeit skewed to one end but IMO not drastically so.
     
  7. eulk328

    eulk328 F1 Rookie

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    I was referring to lifting the entire car from the ground up to 3, 4 or more feet in the air with the back end hanging off the lift before the sub-frame is removed. There is no support underneath the sub-frame until you lower it back down to, for example, rest it on an engine cradle.


     
  8. Dave rocks

    Dave rocks F1 World Champ
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    Trust me, it's the same :) (If using the same lift points)

    Hanging the ass off a 4 post is no different than doing so off a 2 post if those points are the same - it's the same moment arm. (this does assume a rigid connection to the floor)

    When I lift my GTS, the roof panel and top of door jams separate just a bit from the load.
     
  9. eulk328

    eulk328 F1 Rookie

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    Coming from an engineer, that's good enough for me :)

    Just don't tell me later that you're actually an electrical engineer.....



     
  10. drbob101

    drbob101 F1 Rookie
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    Agree which would argue against that approach imo. All of the methods I have seen posted have not been done like that but rather as I described.

    I may be missing something but that is my understanding. The car is projected off the lift, wheels on. It is jacked up at that point, wheels off, engine supported.

    I don't think the car is actually cantilevered off with unsupported engine.

    I have not done it yet but I have played it out on my lift and that is hoe I envision it happening.
     
  11. Dave rocks

    Dave rocks F1 World Champ
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    #36 Dave rocks, Feb 9, 2017
    Last edited by a moderator: Sep 7, 2017
    :)

    It should be noted that Pros use 2 post lifts there are no issues with the method. The 4 post works with a little extra work.

    This document might be of use to you.

    Note - I need to make one revision - I now use a slightly different place in the front.....

    The front of the rocker panel are has a rubber plug with a hole. My suspicion is the hole is a factory point for a dolly / overhead transfer. I remove the plug and put the lift pickup there.
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  12. Rifledriver

    Rifledriver Three Time F1 World Champ

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    White is best. Easy to keep clean, easy to find stuff and the best part is how much light it reflects on to the bottom of the car. A friend just bought a house with one of those speckled gray finishes and he hates it. He says if you drop something it is gone.
     
  13. eulk328

    eulk328 F1 Rookie

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    Thanks. I've already got your various documentation saved to my computer (and read them). It's nice that you, and some others, take the time to share that kind of stuff (along with your videos on YouTube).


     
  14. INTMD8

    INTMD8 F1 Veteran
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    It does reflect a lot but I put more work than I would like into keeping it clean. Always cleaning up tire marks and things that may not be as noticeable on something well, not white.

    It is super easy to find stuff.
     
  15. eulk328

    eulk328 F1 Rookie

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    Sounds good to me and, I assume, it also "lets you know" right away when you need to sweep and mop your floor :)


     
  16. eulk328

    eulk328 F1 Rookie

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    Isn't that what kids and wives are for? :) Okay, I'll shut up now.

     
  17. INTMD8

    INTMD8 F1 Veteran
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    Don't have either. Could ask the girlfriend but then I'd have to let her in the garage :D
     
  18. eulk328

    eulk328 F1 Rookie

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    I would not make that compromise.

     
  19. drbob101

    drbob101 F1 Rookie
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    http://www.ferrarichat.com/forum/348-355-sponsored-bradan/234071-355-engine-out-4-post-hoist-safe-way-pictures.html

    Here's a thread by cf355 who did his with a 4 post. Note how he raises the car to get the fillies under using jacks and not the lift and his caveat not to use the lift at this point.

    A 4 post lift uses cables at all 4 corners and with the car cantilevered off the rear like that most if not all the weight is on the rear two cables only. You don't use the lift itself until the engine is disconnected from the car. At that point the lift is only lifting the empty weight of the car on those two rear cables

    As I said, I don't think using the lift to lift the cantilevered intact car is a good idea.
     
  20. Dave rocks

    Dave rocks F1 World Champ
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    As an example, the Bedpak's 4 post start at a capacity of 7,000 lbs and that most certainly has a safety factor. So, that's 3500 for the rear alone which is more than what a 355 weighs and the load is still a distributed load and not a point load on the rear posts.

    Garage Lifts, 4-Post Car Lifts, Four Post Car Lifts, Auto Lifts - BendPak Products

    Personally, I would not do this job on a 4 post even though others have done so being innovative. I also would not do it with the 2 jack method. But that's just me. YMMV
     
  21. eulk328

    eulk328 F1 Rookie

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    I've seen and studied that thread. My idea was to utilize Dave L.'s plan for an engine cradle or get one of his, if he makes them. The height of his engine cradle is 32 or 33 inches. That means you have to get the car up a bit higher than that. Then when everything is disconnected you have to raise the car an additional amount to clear the bodywork and roll the sub-frame out from under the car. I may or may not have enough ceiling height to do that and that's what I'm trying to figure out and the reason I started the thread.

    Like Dave, I don't want to work on the floor and also want the engine at a reasonable height for inspection and working on. If I were still 20 years old I would have no problem doing everything at a lower level to the ground :)


     
  22. eulk328

    eulk328 F1 Rookie

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  23. drbob101

    drbob101 F1 Rookie
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    I would not use a 4 post lift in that manner. Never. You are at the limits of the lifting capacity of the post on one end like that.

    Get a hydraulic table of adequate capacity and take the engine out then lift it to your desired work height. You don't have to max out your lift and you won't have overall vertical issues.
     
  24. eulk328

    eulk328 F1 Rookie

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    Maybe a one-third height version of Dave's engine cradle, without casters, and bolted to a hydraulic table would be a safe bet for me.


     
  25. Dave rocks

    Dave rocks F1 World Champ
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    #50 Dave rocks, Feb 9, 2017
    Last edited by a moderator: Sep 7, 2017
    This guy shows the best example of a hydraulic table use I've ever seen as he incorporated a custom cradle to it and it looks welded to the hydraulic lift table.

    However, it looks less than safe from side-to-side tip over so I'd be careful doing this also.

    Nothing beats a properly designed, purpose built stand that is very close to the Ferrari designed stand.

    However, some would not agree even if the cure for cancer was found ;)
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