CV joints or something else

[cwbroncos]

Well my friend just got done breaking in his 2600. And today was the first day he has gotten on. Well we went out to the "testing grounds" to see how it feels. When he shifts into second it grabs hard. I have a 2600 in my car and its nothing like it. The best way I could describe it is as if it was a puck clutch. On the 1-2 shift it felt like he tached it to 7 and dumped it. Then after that we tried a few launches to see how it did. And well we could hear some clunking durring the launch, all though he passed it off as the exhaust hitting the ground. Also sometimes when taking off normal it almost feels like there is slack in the driveline and it slips or something. So after that we were pulling in to the parking spot we hear a real loud clunk. It also felt like something was dragging. Now when ever you turn sharp enough we get the clunking and dragging. My first thought was the center defferential since it just developed and mainly happens when turning. He got it up on jacks and put it in gear and only three tires will spin. The front left just sits there. He's thinking the CV joint is shot but the boot isn't leaking and before he put the clutch in there was no problem. I'm not really sure what to think but I don't think the CV would just suddenly break and cause all the other problems. What do you guys think?

 

[leet]

Sounds like he broke an axle. Have him pull it and take a look, it's not that hard.

The clunking on launches was probably the axle stripping splines.

Any other input?

 

[skurry]

Thats pretty weird, just the other day my car was making a "clunking" noise when shifting and I was thinking the cv also.

 

[dsm4life]

my car use to make the pluke type cluckin , hard to describe but i got both boots replaced , new grease and now the sounds gone.

 

[crankbender]

Not enough info to solve the problem but I will give you this.

The DSM does not have a LSD front diff on it. This means when you spin one of the rear tires it will grab the other rear and both will spin. This turns the drive shaft. The drive shaft spins through to the front diff. However the front diff does not have a locking device so it only has to have an average speed equal to the average of the rear. The car will usually accomplish this by spinning 1 wheel (the one with less resistance) twice the speed of the rear wheels.

Try spinning that front left that was sitting still and see if it turns other stuff.

Breaking the center diff will not always degrade its performance when it is in the air. Put the car on the ground, turn the wheel all the way to the lock, and put it in reverse. Does it do this bong, clunk, move??

 

[cwbroncos]

Put the car on the ground, turn the wheel all the way to the lock, and put it in reverse. Does it do this bong, clunk, move??

Yeah it did and it also felt like it was dragging a little. But leet was right. He pulled the axle last night and I guess its toast. I'm still trying to figure out why it shifts so hard. My 2600 doesn't do it at all. We kinda think the hard shift is what broke the axle also.

 

[crankbender]

AWD+hard shifts=broken tranny parts.