« Reply #24 on: October 09, 2012, 02:07:55 AM »
The only reason manufactures installed the slip yoke into the Trans or T case was because it was cheeper and it worked fine for a stock vehical. Once you start to modify the rig then the stress on the tail shaft housing becomes to great and wears out quickly causing leaks at the tail shaft seal from wearing brass bushings and bearings in the tail shaft housing. Installing a SYE benifits in many ways but more so for short wheel base vehicals like the CJ's,YJ's &TJ's to extend the drive shaft a few inches to help reduce the operating angle. The NP231 and other Jeep T Cases are weak at the tail shaft area compaired to a 1/2 & larger truck T Case housing and also the angle of the rear drive shaft is not even close to a short wheel base jeep. What im trying to say is a standard slip yoke in a Fullsize 1/2 & up truck will hold up to more abuse than a standard slip yoke in a jeep but still will wear out. A SYE is a stronger design and will outlast any standard slipyoke off the tail shaft. Ford installed alot of Slip yokes in there drive shafts. Guess they felt it was worth it. GM, Dodge & Jeep just went the cheeper way. I do have to say you rearly see a leak at the tail shaft on a SYE style setup.
BTW we went far off the subject of "Vibration when I hit the gas pedal" LOL
« Last Edit: October 09, 2012, 02:11:51 AM by skibum »
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09 Rubi 4Dr,Compleat Heavy Duty Polly Performance skid plate system,Kilby Evap Relocation kit,Rampage front bumper,Swaybar motor flip,Clayton 3.5in lift w/steering corection kit,35in GY MTR's on 15in MB Wheels,Ace Enginering Rear Bumper W/Tire carrier,Prorock D44 Front axel,5.13s,cromo rear shafts