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What rearend ratio do I have?
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Author:  72Duster [ Wed Sep 21, 2005 5:11 pm ]
Post subject:  What rearend ratio do I have?
Hi!
Got my hands on the lancer finally. Had a couple of good days, the car is nearly stripped to the pure body . jacked it up at the rear, both wheels off the ground. Axle has 9 bolts, asymetrical pattern. Turned one tire 9 times to have (almost)exactly 14 turns of the driveshaft. Other wheel didn´t move. From what I know, this should be a 3.11:1 ratio, non-locked, 7 1/4" axle. Am I right?

By the way, got me a 66 Dart 4door w/o engine but with rust, pretty cheap, pretty close to me, which I will make a daily driver before really starting with the smashed lancer projekt :-)
Thanks
Chris
Author:  SlantSixDan [ Wed Sep 21, 2005 5:36 pm ]
Post subject:  Re: What rearend ratio do I have?
Quote:
Jjacked it up at the rear, both wheels off the ground. Axle has 9 bolts, asymetrical pattern. Turned one tire 9 times to have (almost)exactly 14 turns of the driveshaft. Other wheel didn´t move. From what I know, this should be a 3.11:1 ratio, non-locked, 7 1/4" axle. Am I right?
No such thing as 3.11. The most foolproof way to check your ratio is to chalk the inboard sidewall of the tire that'll turn and block the other tire (or don't lift it up) so that it can't turn even a little bit. Turn the marked tire through two full revolutions and count quarter-turns of the driveshaft by watching the rear U-joint caps as the come to face the pavement. Divide the number of quarter-turns by four to get your ratio.
Author:  72Duster [ Wed Sep 21, 2005 5:45 pm ]
Post subject: 
Dan, thanks for your fast reply. I spent half an hour under the car figuring out what I was actually doing there. This means, I tried to be and think like a rear axle :-) I marked both tires, tried it with the passenger and driver side. The other wheel didnt turn a bit. no need to block it then(?) 9 turns of the wheel give me 14 revolutions of the driveshaft. 1.55556 rear ratio??? I must be wrong but I can´t figure out where I´m wrong.
Author:  Dennis Weaver [ Wed Sep 21, 2005 6:07 pm ]
Post subject: 
Why do you keep turning your wheel 9 times, wussupwitdat?! :lol:

Turn it TWO times like Dan the man sed and count how many times your driveshaft turns. TWO times to compensate for the spider gears in the differential spinning at a 2:1 ratio to take up the non-turning wheel.

D/W
Author:  SlantSixDan [ Wed Sep 21, 2005 6:54 pm ]
Post subject: 
Quote:
9 times
You sounded just like Ed Rooney, just then! :lol:
Author:  72Duster [ Thu Sep 22, 2005 3:31 pm ]
Post subject: 
Lol... well, at 9 turns, the shaft turned exactly 14 times, that´s why :-) Got that figured by now, it´s a 3.23 axle. Who the hell is Ed Rooney???
Chris
Author:  SlantSixDan [ Thu Sep 22, 2005 3:36 pm ]
Post subject: 
Quote:
Who the hell is Ed Rooney?
He's the guy who said "9 times[/u]".
Author:  70valiant [ Thu Sep 22, 2005 5:58 pm ]
Post subject: 
I dont remember Ferris being sick 9 times.
Author:  SlantSixDan [ Thu Sep 22, 2005 9:00 pm ]
Post subject: 
Well, that's because he wasn't sick—he was skipping school.

Wake up and smell the coffee, Mrs. Bueller. It's a fool's paradise; he is just leading you down the primrose path...
Author:  slafolle [ Mon Sep 26, 2005 7:00 pm ]
Post subject: 
9 turns of the tire and 14 turns of the driveshaft, hmmm... 14 divided by 9 is about 1.56. Them's good highway gears!

Steve

1966 Dodge Dart GT
Author:  440_Magnum [ Fri Sep 30, 2005 10:47 am ]
Post subject: 
Quote:
9 turns of the tire and 14 turns of the driveshaft, hmmm... 14 divided by 9 is about 1.56. Them's good highway gears!

Steve

1966 Dodge Dart GT

You forgot to multiply by 2 since its an open rear and he only turned ONE rear tire. Its a 3.23.
Author:  vynn3 [ Fri Sep 30, 2005 11:18 am ]
Post subject: 
Bueller...?

Bueller..?

VM
Author:  emsvitil [ Fri Sep 30, 2005 1:19 pm ]
Post subject: 
Quote:
Quote:
9 turns of the tire and 14 turns of the driveshaft, hmmm... 14 divided by 9 is about 1.56. Them's good highway gears!

Steve

1966 Dodge Dart GT

You forgot to multiply by 2 since its an open rear and he only turned ONE rear tire. Its a 3.23.

2 * 1.56 = 3.12..............


(I didn't flunk math..........) :wink:
Author:  Dago Red [ Sat Oct 01, 2005 3:11 pm ]
Post subject: 
:D "......He doesn't even drive it, he just wipes it with a diaper !! "
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