Yep sorry f#cked up. Yes you are correct adjustable upper and standard lower. Thanks for info will have a look.
Moving an LC/LJ diff forwards
Started by
orangeLJ
, Oct 14 2011 04:32 PM
62 replies to this topic
#27
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Posted 01 November 2011 - 09:52 PM
Pinion angle is the relationship of the diff pinion and the rear of the gearbox. The diff pinion should be parallell to the output shaft of the gearbox (and ergo paralel to the centerline of the crankshaft of the engine) but not in a strait line.
My understanding is they should be parallel under acelleration, as the diff twists upwards under load. Anyway, within 2 degrees is apparently OK.
#28
_Bomber Watson_
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Posted 01 November 2011 - 10:56 PM
Yes, sorry.
Im getting to used to working on industrial gear
If you have a rubber mounted diff then 2 degrees down from parallel.
Cheers.
Im getting to used to working on industrial gear
If you have a rubber mounted diff then 2 degrees down from parallel.
Cheers.
#29
orangeLJ
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Posted 02 November 2011 - 06:50 AM
Bomber hit.the.nail on the head, my biggest worry is that adjustable uppers will rotate.the.diff and give me a shitty driveline angle (pinion angle)
Hence the questions lol.
im going to look at the.chevelle uppers and maybe mcdonalds brothers lowers.
Hence the questions lol.
im going to look at the.chevelle uppers and maybe mcdonalds brothers lowers.
#30
_Agent 34_
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Posted 03 November 2011 - 04:45 PM
Newton's Third Law
A force is a push or a pull upon an object that results from its interaction with another object. Forces result from interactions! As discussed in Lesson 2, some forces result from contact interactions (normal, frictional, tensional, and applied forces are examples of contact forces) and other forces are the result of action-at-a-distance interactions (gravitational, electrical, and magnetic forces). According to Newton, whenever objects A and B interact with each other, they exert forces upon each other. When you sit in your chair, your body exerts a downward force on the chair and the chair exerts an upward force on your body. There are two forces resulting from this interaction - a force on the chair and a force on your body. These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is:
A force is a push or a pull upon an object that results from its interaction with another object. Forces result from interactions! As discussed in Lesson 2, some forces result from contact interactions (normal, frictional, tensional, and applied forces are examples of contact forces) and other forces are the result of action-at-a-distance interactions (gravitational, electrical, and magnetic forces). According to Newton, whenever objects A and B interact with each other, they exert forces upon each other. When you sit in your chair, your body exerts a downward force on the chair and the chair exerts an upward force on your body. There are two forces resulting from this interaction - a force on the chair and a force on your body. These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is:
For every action, there is an equal and opposite reaction.
#31
greens nice
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#32
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Posted 06 November 2011 - 09:06 PM
Those arms are different to LC/LJ ones.
#33
_Bomber Watson_
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Posted 06 November 2011 - 09:06 PM
Yep, no spring mount on the lowers.
#34
greens nice
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Posted 07 November 2011 - 10:12 PM
please forgive me for i have sinned, ive only worked on box torana's
#35
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Posted 07 November 2011 - 10:36 PM
Please forgive me for I have sinned.
I deliberately bought three Fords, two of which was brand new.
I deliberately bought three Fords, two of which was brand new.
#36
greens nice
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Posted 08 November 2011 - 05:20 PM
i dont feel so bad now hehe
#37
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Posted 08 November 2011 - 07:55 PM
I no longer own any of them, so I don't feel so bad either.
#38
_coupe202_
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Posted 19 November 2011 - 07:18 PM
The control arms that Mc Donald Bros do for LC LJ toranas are not adjustable because of were the springs sit, the only way is by cutting the factory control arms.
#39
_LXSS350_
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Posted 21 November 2011 - 03:33 AM
I hope you wore a Burka if your driving around in a Fraud!!!
My god is there is no greater sin than owning a Fraud???
That sort of thing gets you a one way ticket to Purgatory.
My god is there is no greater sin than owning a Fraud???
That sort of thing gets you a one way ticket to Purgatory.
#40
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Posted 21 November 2011 - 08:22 AM
Purgatory is a Roman Catholic myth, it doesn't exist.
Two of the Fords I bought brand new.
Two of the Fords I bought brand new.
#41
_LXSS350_
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Posted 21 November 2011 - 05:35 PM
Purgatory definitely exists, I have driven past its factory down in Broadmeadows. 
#42
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Posted 21 November 2011 - 06:34 PM
My younger brother is production engineer there. Or was, he and his family have been transferred to Brazil for 3 years.
#43
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Posted 21 November 2011 - 06:42 PM
You got to put him on the right path.
Get him into the heart of the Lion.
As we know Henry Frauds are only good for simsmetal collection. LOL
Get him into the heart of the Lion.
As we know Henry Frauds are only good for simsmetal collection. LOL
#44
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Posted 21 November 2011 - 06:52 PM
How do you think I got my new Fords so cheap?
#46
orangeLJ
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Posted 21 November 2011 - 07:13 PM
The spring mount definitely struck me as a possible issue, however I see no issue with fabricating spring mounts for a n adjustable ntrol arm
#47
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Posted 21 November 2011 - 07:37 PM
You can work the spring mount into the adj design. From the the trailing arms I have brought Mc Donalds do a very good job. Blast and 2 pac them and your away.
#48
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Posted 22 November 2011 - 02:18 PM
Just make the adjustable section between the spring mount and the diff.
#49
_wblje_
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Posted 02 December 2011 - 07:02 PM
i like old mates idea of redrilling holes. 25mm forward on all arms then retrimm to look stock i reakon. i think ill do that to mine. but im drunk so this is the best time to make engineering calculations...........:0
#50
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Posted 01 January 2012 - 11:53 AM
I originally had my uppers & lowers shortened to centre the wheel, i wanted some more pinion angle so called mcdonald bros, i gave them the measurement of my existing shortened uppers, they assured me that the adjustable uppers would be fine & that i would not need a custom set made. I ordered them, removed my old arms & adjusted the new ones in as far as possible & they werre still 20mm longer!!! Very frustrating, had to take them to an engineer so the tubes could be shortened & the thread tapped further, was not happy but all good now, would have to admit its the best thing i've done to the car (pinion angle that is) the difference in acceleration & powering out of corners is unbeleivable! So be warned if ordering a set of adjustable uppers and if you plan to shift diff forwards you will need shorter arms than the normal production ones and you will still need to shorten your lowers.
Ben
Ben
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