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Author Topic: Willys MB build  (Read 78439 times)

Wingman

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Re: Willys MB build
« Reply #120 on: March 28, 2014, 05:19:58 PM »
I guess I can always move the lower to the bottom of the frame rail if it becomes an issue.  All the reading I've been doing makes it sound like it is all a crap-shoot anyway and I'll end up changing things around later no matter how many diagrams and calculations I make.  Maybe I need a spreadsheet?  :P
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M4wdFab

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Re: Willys MB build
« Reply #121 on: March 28, 2014, 05:28:59 PM »
just weld them on where you want.  if there are any serous issues they will be obvious and you fix. 


i have never read up or cared about text book suspension design.  i have a few of my own rules of thumb right or wrong i dont know- 6 cars so far and no complaints. 
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mr.mindless

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Re: Willys MB build
« Reply #122 on: March 28, 2014, 05:54:05 PM »
I'm still baffled that the engineer doesn't care about the numbers behind why it works or doesn't.
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gif

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Re: Willys MB build
« Reply #123 on: March 28, 2014, 07:38:45 PM »
  0% AS = On level ground the buggy's rear body will get lower to the ground when accellerating. the only thing that will keep the suspension from total bottoming out is the resistance of the coilovers / springs.

100% AS = The rear of the buggy will remain perfectly stable when accelerating on level ground due to the fact the that torque generated as a result of the axle wanting to twist will be transfer through the links and counter act the effect of the weight transfer.

over 100% AS = The rear of the buggy will rise on accll on flat ground because the torque generated from the axle wanting to twist is overpowering the force from weight transfer causing the rear to rise.

AS too high = vehicle hops =  Axle wants to walk under the vehicle, weight transfers and unloads due to traction loss.   

AS too low = vehicle wants to stand up.  nose wants to lift, changing your COG.

AS "good" = no unwanted body motion.  can sit on hill face and smoke the tires off !!  ;D


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Wingman

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Re: Willys MB build
« Reply #124 on: March 28, 2014, 08:14:22 PM »
Good info and excellent explanation!

So, it would seem that unless I were to drop the chassis down, there is no way I'm going to achieve optimal anti-squat numbers.  Seems counter-productive for this crawler unless I go to enormous tires or drag through every obstacle.  Not likely on either account.  Hoping it won't be awful.  If it is, I'll change it somehow.  Suspension experiment 101.  ;D

Not sure how some of the piles out there come anywhere close to the right number given the height their chassis and angle of their links.  :o
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Nick

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Re: Willys MB build
« Reply #125 on: March 28, 2014, 08:22:58 PM »
Is it at all possible to raise the upper control arm on the frame side up?
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Wingman

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Re: Willys MB build
« Reply #126 on: March 28, 2014, 08:28:46 PM »
Not really.  That's even 2" higher than I would like.  Trying to keep the floor and seating as close to the top of the center frame rail as possible.  I could shorten the upper links a little and move them backward but that won't help enough to matter and hinder droop in the process.
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jaysenodell

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Re: Willys MB build
« Reply #127 on: March 28, 2014, 08:33:03 PM »
Quote from: gif on March 28, 2014, 07:38:45 PM
AS "good" = no unwanted body motion.  can sit on hill face and smoke the tires off !! ;D

I think this is called "the sMike club".
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Mid Life Crisis in the making -- '02 TJ i4 manual, Aussie Locker magic pulling from the front

Nick

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Re: Willys MB build
« Reply #128 on: March 28, 2014, 08:41:13 PM »
Run it and if it is that bad just drop the lower to the bottom of the frame. I'm sure you will be fine tho
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Wingman

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Re: Willys MB build
« Reply #129 on: March 30, 2014, 06:05:02 PM »
Special delivery today of a VIP (very important part)...
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Wingman

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Re: Willys MB build
« Reply #130 on: March 31, 2014, 06:23:23 PM »
VIP?  Kind of pivotal!  ;)

LM4 aluminum block (pre-L33), 40k miles, 290 hp, 325 f/lbs torque, "drive-by-wire"

Needs a pan change, intake should be fine.  We'll see.

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mr.mindless

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Re: Willys MB build
« Reply #131 on: March 31, 2014, 06:28:50 PM »
sweet!
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Ryan

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Re: Willys MB build
« Reply #132 on: March 31, 2014, 07:49:10 PM »
Computer tune should be high on the list of things to get done.

It looks like a sweet motor.
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gif

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Re: Willys MB build
« Reply #133 on: March 31, 2014, 09:27:16 PM »
Nice Score!

How tall are these engines?
Willys have low hood lines.
I can see packaging in your future.




EDIT*    found it.
« Last Edit: March 31, 2014, 09:52:23 PM by gif »
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Wingman

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Re: Willys MB build
« Reply #134 on: March 31, 2014, 10:05:09 PM »
Not saying that I'll have a lot of extra room...

Those are great renderings (keep that stuff coming)!  Both show different oil pans than presently on it but top drawing is similar in depth.  Need a different oil pan so it will be the same height as trans pan for protective skid plating.  From belly to top of hood should be about 27".

LS1 intake would be the second height trim, if necessary.  Concession is slightly lower HP numbers.
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