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racer96x
05-20-2012, 11:58 AM
Hey guys,

My friend has a 3 link Inca sportmod and so far he has gone through three transmissions and one riveshaft. Pinion angle is good. Driveline is straight. Anyone have any ideas to look at? We're stumped

dirttrackrocker
05-20-2012, 05:23 PM
Do you have enough travel on the yoke??

racer96x
05-20-2012, 05:38 PM
Plenty of travel. Doesn't bottom out at all. The transmission is breaking on the bolt ears by the bellhousing

bluemod
05-20-2012, 06:20 PM
i had the same problem on my mod and we found hair line crack on the motor mounts letting the motor rock

JustAddDirt
05-21-2012, 08:23 AM
Are you running a transmission mount?

dirty white boy
05-21-2012, 06:52 PM
input shaft needs to be degreed to center of flywheel....

AH55
05-22-2012, 04:50 PM
Are you running a transmission mount?

I would have to agree with the trans mount if your not running one. If this is a saginaw you'll break the ears all day long without one.

racin6mod
05-22-2012, 05:48 PM
with a sport mod 3 link with a solid pull bar you should be getting enough axle wrap to put the drive line in a bind but I would jack the rear of the car up high enough to to get both tires off the ground (jack it up from under the seat area only) and check every moving part to see if it's binding. we never ran a rear trany mount with a steel bellhousing and never broke a trany case or a drive shaft. does this car us a middle or the old side mounts?

bentfender
05-24-2012, 12:55 PM
if your running a long yoke u might be running out of splines on the tail shaft