i tore into my tranny and thought the bearings had locked up got in to it and i believe its 4th gear had been ground down to nothing is it 4th gear idk can i use a 4th gear off of another tranny mine is a s1 b16


i added some pics of a couple gears i bought awhile ago a couple are marked but the rest idk what gear there for i counted the teeth but cant find any info

 

You're looking at an extensive rebuild. You can't just throw another gear on there. To do this right the entire transmission must be completely stripped bare and cleaned thoroughly. You also now have bearings and other gears that have been damaged or compromised by the broken gear teeth getting stirred around inside. Good luck

 

the bearings seem like they are spinning fine still as far as i can tell the other gears show no damage unless theres a place i dont see yet what else would i need to pay attention as far as damage

 

Bearings may seem to spin ok but debris such as chunks of metal damage the race and the *****. With the rpm and the load the bearings will surely have a greatly reduced life but may still work ok for some time.

The other thing is the amount of metallic debris that's has now been feed into the main and countershaft, as well as nooks and crannies all over the transmission casing. Take the gears/apart and you will see exactly what I'm talking about.

To me, nothing is better than a perfect operating and shifting transmission that you know has been done right. So it's natural I'd recommend to rebuild yours properly rather than half assed like it seems 90% out there are.

 

I see lots of heat related damage from not getting proper oil flow. Normally on B's when that happens 4-5-R is trashed.

 

yea when i bought it i attempted to drive it home then this happened on i75 so it got towed home and i took the drain plug out...... drip drip drip thats all that was in it

 

Found the same thing in a friend's car he recently bought. 5th gear looked just like that. But the rest of the tranny was ok, just allot of debris, like mentioned before. Make sure you completely clean out the passages running down the center of both gear shafts, the will be clogged with metal shavings.

 

will do thank you f22

 

On the pic of the gears above, from left to right:

Reverse Idler gear, LS mainshaft 3rd, LS countershaft 4th, Ls countershaft 3rd

 

thank you i didnt think it would be that easy for someone to get it that easy

 

http://www.ff-squad.com/tech/temp/Bgears.htm

 

Not all of Jason's info is correct in that link.....

1320london: Hopefully you can salvage the transmission case itself and maybe shifter forks. But likely not much else.

 

ok im trying to strip the cases down but cant get the final drive off any help

 

Note the arrow on the bolt heads for the ring gear, they are left hand threads.

 

im having a problem finfing any bolt head all i see is the end of the bolt

 

...have you flipped the diff over?

 

does it all come out as one, its still in the case and i really dont see a way to get it out

 

Yep, the whole thing comes out as one. It may take some with wiggling and pulling

 

i didnt really have any shavings just the teeth, i sprayed thru the shafts and everything this happened all at once so maybe there wasnt much time to do alot of damage