Paul's 89 302 Project

[Pauliten02]

What's up everyone. First off, thanks for all the advice on the site. I've spent the past month reviewing threads and learning to fix multiple problems. When I picked her up she had been sitting for 3 years (first pic). Got her to my house checked fluids and after a few adjustments have her running and performed the self diagnosic test. Where is the best place to post questions regarding codes? Again, thanks in advance for all the help. So far I haven't had to pay someone for a fix. I added a couple of pics after she fired up.

 

[miesk5]

Yo PAUL,

WELCOME!

Post in

80-96 Ford Bronco Tech Support
Also;

When you post a Q here, continue to incl the year, as well as engine size, transmission & transfer case (manual or shift on the fly) types and any majors modifications such as over sized tires/wheels, suspension lift, gear changes, etc. to the post or better yet, your signature.

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[Pauliten02]

Will post in signature. Has a permanent locking rear. How can I determine gearing?

 

[Pauliten02]

Last owner "thinks" 411 gears. Has permanent rear locker.

 

[miesk5]

yo Paul,

Jack up one tire if you have an open diff, or both tires if you have a working posi or locking differential. Rotate the tire one full revolution for posi’s and lockers and 2 full revolutions for open diffs. Carefully count the number of full revolutions the driveshaft makes. This is your gear ratio. In other words, if the drive shaft turns 3 ¾ turns, you probably have a 3.73 gear ratio. Turning the tire for twice the number of full revolutions and dividing the drive shaft revolutions by two will give you a more accurate reading.

 Put the transmission in neutral and jack up both tires. Turn one tire. If the other tire spins the opposite direction you have an open differential, and if it spins the same direction you have a posi or a locker.

http://www.differentials.com/technical-help/faqs#What gear ratio do I have?

Information, History, ID, pics, etc.; "...8.8” rear’s have a ten bolt inspection plate on the back that’s about 10” from the center of the top bolt to the bottom bolt center. The 8.8” first saw service in the 79 Crown Vic. and in 1980 for the F100/150..."

See more on 9", 10.25", etc.
Source: by Kenneth C at Bad Shoe Productions http://www.badshoeproductions.com/rear.html

"...Ford built our Broncos & other 4x4 trucks & vans with a numerically lower front gear ratio in the front Dana 44 than the rear so that off-road steering is enhanced. A Bronco built with 3.55 rear ratio would have a 3.54 ration in the front Dana 44; or; 3.08 in the 8.8 & 3.07 in the Dana 44; or 4.11 in the 8.8 & 4.10 in the Dana 44, etc..."; Following was in my MS WORD Notes and the source, Randy's Ring & Pinion has removed it from their current web site; The gear ratio in the front of a four wheel drive has to be different from the front so the front wheels will pull more. There have been many different ratio combinations used in four-wheel drive vehicles, but not so that the front will pull more. Gear manufactures use different ratios for many different reasons. Some of those reasons are: strength, gear life, noise (or lack of it), geometric constraints, or simply because of the tooling they have available. I have seen Ford use a 3.50 ratio in the rear with a 3.54 in the front, or a 4.11 in the rear with a 4.09 in the front. As long as the front and rear ratios are within 1%, the vehicle works just fine on the road, and can even be as different as 2% for off-road use with no side effects. point difference in ratio is equal to 1%. To find the percentage difference in ratios it is necessary to divide, not subtract. In order to find the difference, divide one ratio by the other and look at the numbers to the right of the decimal point to see how far they vary from 1.00. For example: 3.54 ÷ 3.50 = 1.01, or 1%, not 4% different. And likewise 4.11 ÷ 4.09 = 1.005, or only a 1/2% difference. These differences are about the same as a 1/3" variation in front to rear tire height, which probably happens more often than we realize. A difference in the ratio will damage the transfer case. Any extreme difference in front and rear ratios or front and rear tire height will put undue force on the drive train. However, any difference will put strain on all parts of the drivetrain. The forces generated from the difference have to travel through the axle assemblies and the driveshafts to get to the transfer case. These excessive forces can just as easily break a front u-joint or rear spider gear as well as parts in the transfer case.
Source: by miesk5 at Ford Bronco Zone Forums

 

[Pauliten02]

Thanks.