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| Axle angle at ride height? (Page 1/1) |
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Wichita
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APR 19, 07:59 AM
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With everything in place, using standard stock 14” wheels, vehicle on the ground and aligned, are the cv axles pretty much straight level or is there usually a droop angle that is normal at resting ride height?
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theogre
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APR 19, 09:19 AM
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Most cars not just Fiero the axles are nearly or is "straight thru" to the wheels w/in GVWR limit.
(Sleight change in ride height for car low on fuel and no people/cargo vs Max GVWR allowed.)
Axles need this so CV's are not bent all the time and wear out fast.
Quick Examples w/ OE cars:
Many see ride height change just using Gas struts and shocks but often settles to about normal after driving for a while.
vs. Car came w/o them or gas leak out can be noticeable different here...
"Rubber" bushings can do similar until settles. Many OE, Moog and many don't have bushing wrap self-destroy problems but need a bit of time to find normal again. If you just jack the car to change tires etc may need same time to find normal too.
For engine swaps etc...
If someone change the springs etc then axles could drop or raise more to the wheels.
Even replace w/ "OE" springs could cause same because of weight of engine and trans options because OE Spring sets for 4cyl are often different then V6 or V8.
Changing Iron to Al block and head(s) in same type engine can change the power train weight a lot too.------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)
The Ogre's Fiero Cave
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Wichita
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APR 19, 01:59 PM
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Thank you for the information Orge, extremely helpful.
A follow up question. If you swap the OE motor and transmission with a different one, what are the factors to consider when measuring to fix the motor mount points as for the axles (knowing that custom length axles will be necessary) to be as leveled as it can be to the wheel hubs?
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theogre
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APR 19, 08:52 PM
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Trans outs for axles should be same location up/down and front/rear.
Length can/will change just like OE Fiero Auto vs Stick.
(Some cars have 2 section right axle because of long length but GM didn't care for Fiero stick cars.)
4T60 and some others fit Fiero easier because shares many mounting parts w/ GM FWD cars that often have/had same TH125c 5-speed etc.
If you put non-GM setup then is harder to much harder to locate the trans outputs and mount the setup.
As is Left side axle is often pushing min length even in stock setups. Is part of Why you never put a trans in gear while car is jack and wheel(s) hanging. Short axles especially can cause Inner CV "blow up" because forces to move beyond normal range. Worse if motor/trans mounts are bad or setup wrong.
inner Tripot CV need to in the middle of operating range...
"Too Compressed" then moving part hits the outer body and dies fast or worse the Trans Dies Fast.
"Too Loose" and tears out the boot fast or even the inner CV first time you drive.
Operating Range for cars can be < to a lot < then 1 inch.
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