402donahue
Bone Stock
Posts:9
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| 03/15/2008 9:53 PM |
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| Why cant I put a body lift on |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 03/16/2008 6:41 PM |
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Not sure, but I'll take a few guesses here...
1) You don't have any tools
2) You don't have any money
3) You don't have any time
[)]
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
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'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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402donahue
Bone Stock
Posts:9
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| 03/17/2008 7:23 PM |
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| So what you're saying is,oranges don't have teeth? |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 03/17/2008 7:37 PM |
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LOL! That was funny.
Seriously though... are you having trouble finding a body lift for your truck?
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
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'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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ChevyMan0784
Lift & Lockers
Posts:699
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| 03/18/2008 10:32 AM |
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| I talked to my grandfather awhile back about that. He said something to do with the fact that it is a diesel. But he said it is essentially the same lift as a gas motor one. You just have to do some fabbing of your own. My guess is it has something to do with fuel delivery, maybe the intercooler and radiator setup too. I can see if I can ask him about it again here today. (he owns Performance Accessories, if that was the brand you were looking at) |
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gimmie fuel gimmie fire gimmie that which I desire-James Hetfield
*Never give an Irish man good cause for revenge.
*Guns dont kill people, but they sure help!!
*98% OF AMERICANS SAY 'OH S**t' BEFORE GOING IN THE DITCH ON A ICEY ROAD.
THE OTHER 2% ARE FROM ALASKA, AND THEY SAY, 'HOLD MY BEER AND WATCH THIS |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 03/18/2008 6:32 PM |
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4Wheel Parts sells body lift spacers for that YR/MK/Model/Engine configuration... I know two guys that have short body lifts on their SD Diesels.
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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402donahue
Bone Stock
Posts:9
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| 03/20/2008 2:47 PM |
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| I installed The three inch Performance accessories on it already. But for some reason, I have no high end power on the highway. The engine roars, and the rpms shoot up, but the truck does not move any faster. It's driving me crazy. |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 03/20/2008 7:56 PM |
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It sounds like the clutches on your transmission are smoked.
Did this happen when you put the lift on it? If so, did you put bigger tires on your truck at the same time?
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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402donahue
Bone Stock
Posts:9
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| 03/21/2008 4:04 PM |
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| The tires stayed the same, I was running 39" before the bodylift. I have a sky jacker 8" lift already. Also the traction light turned on. Any Ideal on what would cause that? I appreciate the help. |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 03/22/2008 4:29 PM |
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| Did you put deeper gears in your truck when you went to 39" tires? |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
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'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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402donahue
Bone Stock
Posts:9
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| 03/23/2008 7:37 AM |
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| Nope, But I have had them on there for about a year with no problems. |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 03/23/2008 11:53 AM |
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Well... there, my friend, lies all of your problems. I hate to be the bearer of bad news, but you've likely caused some serious damage to your transmission. At best, you've destroyed the clutches (I hope), as that can be rebuilt.
Your truck likely came stock with 3.73 or 4.11:1 gear ratios. When you put 39" tires on it, you went from a 31.7" tall tire (your stock tire size) amd effectively increased the size of your tire's diameter by 7".
To get your trucks drive ratio back to stock, you needed to deepen your gears to a minimum of 4.56:1 (if you had 3.73 stock gears), or 5.12:1 (if you had 4.11:1 stock gears). There were a few models that had 4.88:1 gears, and if you had that truck, then you needed to have changed your gear ratio to a gear set of 6.xx:1 or deeper, just to get it back to the same compound gear ratio.
Lets put it another way... if we do some basic math here, you'll be able to understand the effect that changing tire size has on your drivetrain.
We know that the tire height (diameter) on your stock tires was right around 31.7" tall. To get the circumference, we just do (pi)*Diameter, which equals 99.538". This means that with one revolution of your wheel, you move forward 99".
With your new tires, you have a diameter of 39", and the circumference = 122.522", or your truck moves forward 122" with one revolution.
You've effectively increased the diameter of the tire by 23%, which means (loosley) that you've added 23% more strain to your drivetrain. This does not factor in the increased rolling resistance or the added weight too, which plays significantly into the equation.
The long and short of it is this... you've added more strain to your drive train by increasing your tire size, which could have been negated by lowering your gear ratio to the appropriate gear size (e.g. 4.56:1 gears).
I'll bet you dollars to donuts that this is what is causing your problems with your transmission.
And, even though you've had them on there for a year, this isn't something that will manifest itself overnight. The clutches and other components in your transmission wear out over time. The added stress that is associated with that takes time to rear its ugly head.
Rick
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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402donahue
Bone Stock
Posts:9
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| 03/25/2008 10:45 PM |
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| Ah ha!! so Oranges do have teeth!!!! Thanks I appreciate the help. So um do you know anyone who's selling a trany? |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 03/28/2008 6:08 PM |
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I might... where do you live?
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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402donahue
Bone Stock
Posts:9
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| 03/29/2008 10:20 AM |
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| Alice Tx. 78332 |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 03/29/2008 11:13 AM |
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I'll ask around (I'm in the Dallas area).
You can also just order a rebuild kit too, from someone like Jegs or Summit Racing. That's a lot cheaper than getting another transmission.
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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402donahue
Bone Stock
Posts:9
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| 03/30/2008 9:23 AM |
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| The only thing is that the tranny started acting up right after I installed the body lift, I mean ont he way home. Is there some kind of harness that is connected to the tranny that I could have pulled out, or maybe a fuse that I could have blown? |
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