4WD on 2WD Dyno, remove front driveshaft?

[Alexia]

Pretty simple, should I remove the front driveshaft when on a 2WD dyno? Yeah, the oil pump is working since the rear driveshaft is spinning, but I am not sure if it is still ideal. It goes against the mentality of all four wheels should be off the ground when towing.

 

[bjoehandley]

Is it an XJ or MJ? Why not just leave it in 2wd when running it on the dyno?

 

[Alexia]

Is it an XJ or MJ? Why not just leave it in 2wd when running it on the dyno?

MJ, 1997 NP242 transfer case and D30 front axle. The front driveshaft will hold the chain and such stationary inside the transfer while the rear output is spinning even when in 2WD. If it was just a few pulls on the dyno I would not care, but this will be one to two hours of non-stop tuning.

 

[ROBZ95Xj]

it be no diiderent then running without a frt driveshaft or lockout hubs

 

[Dr. Dyno]

Pretty simple, should I remove the front driveshaft when on a 2WD dyno?

No need. Just leave the transfer case in 2WD.
It would be a different story if you only had full-time 4WD.

 

[Talyn]

x3 or 4... leave it in.