Did the expo 8.8 swap - Ranger-Forums - The Ultimate Ford Ranger Resource


Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

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  #1  
Old 08-29-2009
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Did the expo 8.8 swap

so i finished my expo swap it wasnt to bad. my only problem is when im going about 40 and up it sounds like the driveshaft is shaking. I did everything correct with the pinon angle and shock tab angles. also driveshaft is tight. I have no idea what it could be maybe my imagination cause im not use to the 8.8 yet. any ideas?
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Old 08-31-2009
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bump
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Old 08-31-2009
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could have gotten a bad rear end. pull the drive line and turn the pinion flange to check in play... i cant say how much but it cant be a whole lot. pull the cover and check the gears them selves. its possible you may have a bad bearing as well.

is the shaking at a certain speed or is it progressive with more speed more shake?
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Old 08-31-2009
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Ryan, we need to get together for a meet. I live on 136th and Colorado.
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Old 08-31-2009
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did you clean the flange that the driveshaft bolts on?

also how do you know your pinion angle is right? same as before?
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Old 09-01-2009
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so that explains why you couldnt make the wheeler lake run lol. least you were workin on the ranger ill let it slide this time. i am lookin for an expo axle for my truck. maybe you could halp me oput seems youve already done one.
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Old 09-01-2009
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Quote:
Originally Posted by fourliter dan View Post
could have gotten a bad rear end. pull the drive line and turn the pinion flange to check in play... i cant say how much but it cant be a whole lot. pull the cover and check the gears them selves. its possible you may have a bad bearing as well.

is the shaking at a certain speed or is it progressive with more speed more shake?
it shakes when im about to shift i took off the drive shaft and turned the pinon flange and there is alot of play. how hard is that to fix?

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Originally Posted by Lord Of War View Post
Ryan, we need to get together for a meet. I live on 136th and Colorado.
For sure just need to get my axle in check first!
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Originally Posted by zabeard View Post
did you clean the flange that the driveshaft bolts on?

also how do you know your pinion angle is right? same as before?
I had a 6 degree angle on the rangers stock axle so i did that on the expo one. i also cleaned the flange and the rest of the oil on the outer axle with brake cleaner.

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Originally Posted by FordX4Ranger View Post
so that explains why you couldnt make the wheeler lake run lol. least you were workin on the ranger ill let it slide this time. i am lookin for an expo axle for my truck. maybe you could halp me oput seems youve already done one.
Yeah sorry about no showin up. let me know when your ready to do it im not a pro but mine seems to work besides my little problem im having.
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Old 09-01-2009
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you need a master install it to fix the rear end it will give you all new bearings and everything
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Old 09-01-2009
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cool thanks man i was afraid of that
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Old 09-01-2009
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cool thanks man i was afraid of that
It also could be excessive play in the gears themselves. Sadly you wont know for sure until you get in there
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Old 09-01-2009
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i will be sure to pop the cover tomorrow and check thanks guys!
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Old 09-03-2009
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so i popped the cover today gears look ok. but i notice when i put the truck in 'n' and jack up the rear, i spin the drive shaft and hear clunking ever half or more turn from the pinon flange. i even replaced my u-joint checked my pinon angle and that seems ok as well im stumped.
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Old 09-03-2009
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Get a magnetic dial indicator and check your backlash. I can't remember the proper backlash spec at the moment...but check it out.

How are the spider and side gears? Could have a possible bad pinion bearing. Could be a bent axle shaft or wheel flange, which in turn took out a outer shaft bearing.

Do you know how many miles were on that rear end? If you have excessive backlash, it can be saved by moving the ring gear closer to the pinion gear. but if you can't get it tightened up, you may need a new r&p. And with that, you need a complete set of bearings and seals, as well as a possible professional gear install job. I know when I was going to put in a heavily used expo, I was going to drop it off to my axle guy to check and make sure everything was in spec before I started cutting and welding on the axle, then eventually installing the axle.
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