Motor go UH! Dana 80 go POW!

Those were spider gears. It's the second time it happened. I think I fixed it for good after the last go around-it got a detroit locker, a set of 3.54's to replace the 4.10's, and a set of spring clamps to keep the springs from allowing much wheelhop. The gears picked it up 3 tenths and 2 mph in the 1/4.
 
Dump the pieces out and put it back together. Should be good as new :shifty: That's a nasty big of carnage. Must've made a fun noise too.
 
Uh, like grunting with effort.

It's a '98 12v dually, 2wd 5 spd. Cummins of course-no gas motor makes the kind of low end torque that cummins does. I dynoed it after getting it all back together-it made 417 hp and 920 ft/lbs. That's at the wheels, on the bottle. It made 340 hp and 680 ft/lbs without the nitrous. I hope to have the new turbo installed tomorrow, or the next day at the latest. I'm hoping for close to 100 hp more, and close to 200 ft/lbs more torque when I get the new turbo set up.

What was funny was this last Friday night, it went 14.73 at 95 mph, and then a buddy's mustang scattered the motor. So I borrowed a trailer and hauled his car home for him.
 
Ouch, I do believe that is broken. Wheel hop at the track or street shenanigans?

The Cummins is an impressive engine no doubt. :cool:
 
My dad ordered a new 98 dually and it came with the 24 valve. The gen 2s are a better setup with the air to air. Pumps are easy to turn up as you well know. Wouldnt propane injection be a better choice over actual nitrous?:confused:
 
Yeah, mine was an early '98. I'm not sure what you mean by air to air.

As for propane, I've never tried it. The thing about the nitrous is, it greatly lowers EGT's. Not AT ALL like a gas engine. The leaner you run it, the safer it is, as combustion temps come right on down as you lean it out. Of course, power suffers when it gets lean beyond a certain point. My pump is set up such that it delivers WAY too much fuel at low rpm and boost if you floor it. So, I just smack it, then spray it. The nitrous burns a lot of the extra fuel that would otherwise turn into smoke, and helps the turbo spool quickly. As the turbo spools up and supplies even more oxygen, the mixture gets leaner. Staying on the nitrous then helps cool the EGT's where they would otherwise be getting out of control. The bigger turbo I'm installing is gonna help with that even more, plus uncorking the exhaust a bunch. All this will make more power, plus I'll then be able to have it deliver even more fuel, making yet more power.
 
Sounds like a torque monster from hell. I was referring to an air to air intercooler, they help cool things down much better than the old type that just ran coolant through them. Good luck with your tranny, it will be the next *weak* point.:toot:
 
Well, the tranny has an oversize billet input shaft in it now. I haven't had any real trouble out of it so far. I had to put the shaft in when I put the dual disk clutch in, since the stock shaft is too small for the new clutch.
 
Da-ho said:
Gertrags like synthetic oil, but you knew that too.;)
Click to expand...

Actually, I didn't know that-I've never had a getrag. Mine takes some sort of funky oil you pretty much have to get at the dealer, so the synchros won't be attacked.
 
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