R50/R53 :: Hatch Talk (2002-2006) Cooper (R50) and Cooper S (R53) hatchback discussion.

R50/53 Two unrelated measurements questions

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Old 03-12-2019, 05:14 PM
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Two unrelated measurements questions

I've looked for these answers in a couple of locations with no luck. Hoping I can get answers here.
05, R53, JCW if it makes any difference.

1. What is the engines, stock connecting rod length ?
2. What is the new car, "as delivered", front wheel camber ? Not beat up from pot hole numbers..!

Mike
 
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Old 03-15-2019, 02:16 AM
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Off the top of my head, the front camber spec is -0.5° ±0.4°, which isn't really enough negative camber.

No idea about the stock con rod length.
 
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Old 03-15-2019, 06:45 PM
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deepgrey -

Thanks.

I gave away my "old car" suspension (caster/camber) measuring tool and bought one that works on most all cars. It sits at the lip of the rim on most wheels. Good luck with no lip type wheels..!
Anyway, currently my rear is -1.5 degrees and the front is -.1, both measured on the left side of the car only. My car has no indication of being in any type of altercation with another car, or curb. I did install urethane bushings in the front control arms and the car has lowering springs from the previous owner. The car feels very solid, but...only .1 degrees in the front.
I bought a pair of adjustable lower control arms for the rear, will be installing them this weekend.
Looks like I'll need to be buying adjustable plates for the front to..!

Thanks again.

Mike
 
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Old 03-16-2019, 07:26 AM
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I'm impressed that you only have -1.5° of camber in the rear with lowering springs. My impression has been that it's usually greater than that. The alignment guy I go to said he had to adjust my rear lower control arms quite a bit to get to -1.5° on my car with my lowering springs.

I'm currently running -1.5° on the front as well with polyurethane LCA bushings. Did you check the strut towers? Even with the softest stock suspension, tallest sidewalls, and lightest wheels, I still had a small amount of mushrooming damage on my car when I installed camber plates.
 
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Old 03-16-2019, 09:44 AM
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Yea, I questioned my new tool.
I put a different digital angle finder/protractor on the frame on the new tool. They were close enough to flicker .1° of the same numbers.

I also wondered about the front only being -.1°, and being lowered. Two scales read the same numbers. I reset frame of the tool twice to verify its positioning on the wheel rim...same same !

Mike

Learned sumthin today, how to type the degree symbol...
 
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Old 03-17-2019, 03:59 AM
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FWIW, I never could get the same measurement that the alignment shop got. I mostly blame it on our carport not being completely level, but I could also be my incompetence (I also have a camber gauge that uses the rim).

Are you using alt codes to type the degree symbol? It's what I do.
 
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Old 03-17-2019, 08:16 AM
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Here is a link on WMW on connecting rod. I assume it’s stock measurements since it states it replaces a range of vehicles.
https://www.waymotorworks.com/carril...-cooper-s.html You can always check with Way.
 
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Old 03-17-2019, 10:12 PM
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deepgrey -

It actually takes a fair amount of movement/displacement to get even a half a degree to show up on a gauge. It would take "several" layers of carpet under one side, to show .1°, + or -.
And yea...after seeing your degree symbol, I did a search to learn how to do what you did, portray the degree symbol correctly..!

T -
Cool, thank you.

Mike
 
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Old 03-24-2019, 04:38 PM
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I am a professor and do wheel alignment studies but also would like to know the as new front camber. My daughters '05 Mini has a degree of negative camber in front but I think the springs have settled over the years and it should be less. It also sits VERY low in front.

FWIW, normal alignment rigs read to 0.01 degrees and are pretty accurate/repeatable. A high amount of variability comes from non level floors and internal weights. Mini has a complex loading scheme for wheel alignments. Something like add 150lb on each front seat plus another 30# in the trunk. I've not investigated the impact of that.

One low pressure tire will make for a dramatic error.

Regards,
Peter
 
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