Engine/Transmission (1994 - 1998) Broke my transmission (again)

[dieselburner]

This time I stripped the teeth off of 5th gear and the 5th gear countershaft. Wasn't even shifting. Just accelerated hard at about 70mph and scattered parts. Broke the main shaft last time when the truck started wheel hopping and broke the input shaft the first time. Anybody know if any parts are being made with a high nickel content for the NV4500? I used to run a pumped up pontiac trans am on nitrous with a super t-10 behind the mill. I swapped all nickel gears into that trans to help it survive and it worked.

 

[HoleshotHolset]

I know that one of the guys from Black Mountain Diesel have had very similar issues with one of their trucks... . I'm not sure what they did to it other than swear at it for a while and replace the lunched parts.



They're in the process of moving, I'm not sure when they might be able to get back to you if you called/emailed them.



Matt

 

[Brandon]

man you are breakin more stuff than me

 

[ronco]

Go automatic!

 

[JohnE]

5th gear trouble. Call the venodrs and ask them. Some are much higher quality than others.



Local diesel shop discovered some of the 5th gear and fully splines shafts replacements are of very poor quality. The lash in the splines was excess and eventually caused a (second?) failure.

 

[dseabaugh]

You just bombed it till it broke. That's the only way you know if you bombed it enough!!!

 

[Turbo Thom]

I have the fifth gear transmission from ST of Fort Worth , the fourth one, and I trashed the fifth gear fix also. The gear started to wobble on a worn shaft, broke the corner of a tooth and had it "lock" up in fifth. And let me tell ya here , the SB clutch is a bad clutch. I tow a 14K lb trailer home in fifth gear. Starting in 4 wheel drive and shifting to 2 wheel after I got started. The clutch smelled like hell but it's still in there doing it's thing. Another thousand dollar fix on the transmission. I would like to know who makes the best product fix on the fifth gear?



. . Preston. .

 

[RT66DOC]

dieselburner



Sounds like for all the $$$ you've spent on 5th gear you could have converted to an NV5600. I'd call Don or Monty at Blumenthal for a chitchat. The 6 speed is alot stronger and much more suited to towing what with the closer rarios and all.



BTW, where'd ya get the aircraft landing lights?

 

[dieselburner]

I ordered a new set of parts from Standard Transmission. So far, they haven't let me down and they have been selling good quality parts. I didn't hear any responses about high nickel content in any after market gears so I guess there isn't a huge market for it. Yet. I should have the parts today and I'll get them in this weekend. By the way, I got the light housings from JC whitney, they are 6" stainless steel and I bought the sealed beam bulbs from Aircraft Spruce. They are 250 watt sealed beam lights. Each of the 4 lights has its own 20A fuse and relay. When I light em up at night in the mountains, it turns night into day.

 

[Joseph Donnelly]

Nickel 9310 gears are used in comp ring and pinions and back in 1977 Borg Warner offered a Super T10 (AS10T10Y) with nickel gears. The problem is that these gears are softer, they aren't as breakage prone but wear rather fast on the street.

 

[dieselburner]

That sounds right about the super T-10. I had a 1978 Trans Am that I swapped a 68 GTO Judge motor into and built it up with ALOT of speed parts at the automotive machine shop that I worked in. I couldn't keep a transmission in it until I got the nickel gears from an outfit called sticks unlimited down in San Jose. I was a regular customer down there for a long time buying mostly new clusters for the transmission. The nickel gears really did cause that thing to hold up to the abuse and the guy even warrantied it for me for 1 year in any forward gear after I bought all the nickel gears.



edit-

I received all of the parts from Standard on Wednesday. Gonna fix the transmission tomorrow morning (saturday) and get it back together. The parts look fine, I am hoping to have it on the road again before noon.



Steve

 

[dieselburner]

Got it all back together and transmission is working fine. Took 3 hours to fix. Used red thread locker on the pesky fifth gear nut.