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reverse cut or not

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Old 06-03-2010 | 11:36 AM
  #16  
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Year: 1988 limited
Model: Cherokee
Engine: 4.0 litre
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Originally Posted by superj
ok, so my 87 is normal cut so when i get the 4.10 i will just get standard cut gears then and they will work in my carrier i have now?

i am running 31s and am going to stay with these or maybe 32s but not go upto 33s. i currently have 3.55 gears and my jeep is a dog and gets terrible gas mileage now. its slow to start and feels like its not in the powerband now so i figured 4.10s would be better then 3.73 or 4.56.
1987 cherokee is high pinion dana 30 with vacuum disco (231 TC), reverse cut.
Old 06-03-2010 | 11:47 AM
  #17  
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Old 06-03-2010 | 12:26 PM
  #18  
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try randy's ring and pinion.

http://www.ringpinion.com/
Old 06-03-2010 | 07:16 PM
  #19  
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From: corpus christi, texas
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ok, so mine is reverse cut then. alrighty. i'll just have my buddies 4x4 shop do the gears if i cannot find any 4 banger axles.
Old 06-03-2010 | 10:24 PM
  #20  
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I've used Complete Offroad in the past. They sell a front carrier for $59 and you can get gear packages with bearings and all for front and rear for around $450.
Old 06-04-2010 | 11:10 PM
  #21  
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hmmm, keep everything in mind you guys are telling me
Old 06-04-2010 | 11:32 PM
  #22  
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a standard cut set up in the front the gear basically pull the truck forward which makes it weak like its pulling apart. The Reverse cut even though in front makes like a pushing which is stong b/c it like its pushing the gears together for a stronger set up. I am building a Ford mud Truck slowly but I am making sure my front axle is a reverse cut d44 so i have a stonger axle for the power and gears.
Old 06-05-2010 | 12:06 AM
  #23  
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Originally Posted by 4.3L XJ
Standard cut means the pinion is designed to rotate clockwise as you face it, same as the engine. For first 70 years of 4X4 history, these same differentials were used in front ends. In the 80s, the high pinion differential was designed and used in vehicles like the XJ. These were designed to be turned around and used in the front in which the drive shaft rotates counterclockwise as you face the pinion. Either can be used. There is a rumor that the reverse cut is stronger in the front than the standard cut. But recent testing has proven that there really is little if any difference in strength. The only real advantage to the high pinion differential is driveline angle when lifting.
you might want to look around a little bit, ford started running the HP in the late 70's. And they were the only ones running a high pinion axle until the XY/YJ jeeps and the mid to late 90's dodge pickups. Everything else was standard cut low pinion
Old 06-05-2010 | 09:24 AM
  #24  
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Originally Posted by 89whiteXJ
a standard cut set up in the front the gear basically pull the truck forward which makes it weak like its pulling apart. The Reverse cut even though in front makes like a pushing which is stong b/c it like its pushing the gears together for a stronger set up. I am building a Ford mud Truck slowly but I am making sure my front axle is a reverse cut d44 so i have a stonger axle for the power and gears.
You have this backwards. The back side of the gears has less bevel on it and so does not spread the case as much. But as I have mentioned, this has been tested and there is virtually no difference in the strength of the gears.
Old 06-07-2010 | 01:27 AM
  #25  
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Originally Posted by fantic238
what speed are those rpm's rated at?
Old 02-06-2011 | 07:39 PM
  #26  
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Originally Posted by Fraser
what speed are those rpm's rated at?
That chart is for 65 mph and a 1 to 1 ratio to make it so it reads right for your over drive multiply the rpms by .79 for the AX15. and .75 for the AW4.
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