I'm sure there is someone out there with some logical explanation as to why my J1 tranny (differential) blew. I have heard of this myth about the J1/S1 JDM b-series tranny blowing and I've tried to research but I found "0". I was doing about 5 over the speed limit (75 in a 70- shame on me ) going with the flow of traffic and next thing you know I hear thumping; it sounded as if I was changing lanes and my tires were running over the reflectors in the lane divider. Then a loud clunk follwed by smoke. Come to find out my tranny exploded, tranny fluid all over the place and my wife and I are stranded on the notorioius California freeway. I just took my tranny apart last night come to find out that my differential is "No More", there's a big hole in the casing so that is shot. Pretty much the only thing that was salvagable was the was all the internals minus the differential. So I managed to get a YS1 and dropped that in and my wifes rex is back on the road. However I'm still puzzled, "Can anyone answer this?". Oh well now that I have a YS1 I won't have to worry about rebuilding the J1. Anyone lookging for J1 internals?

 

I dunno if this applys to your tranny, but i've heard of CRX's (d16a6) differential pin (the one you see when you look through the differential to see if its a LSD or not) comes loose and flys around inside the tranny. Might have happened to your tranny

 

pics???...do show...

 

Usually this happens when drag racing or putting major stress on the driveline. Have you found the diff pin. Look for part #11 in this pic. If its mangled then it failed. This has been know to happen with the early cable trannys. The diff pin was not hardened like they were on later models. This is the weak link in pre92 trannys.

 

# 11 is the bad apple in every D and B series tranny that goes bad. Clutch dumps, frequent stalls in gear, and chirping gears all lead to that pin shearing in half.

 

Same thing happened to my friends car, dunno why but he also had a j1 with no grinds, very smooth tranny...

 

can i get the busted one, hit me with an i.m.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PhatOptimo &raquo;</TD></TR><TR><TD CLASS="quote">Usually this happens when drag racing or putting major stress on the driveline. Have you found the diff pin. Look for part #11 in this pic. If its mangled then it failed. This has been know to happen with the early cable trannys. The diff pin was not hardened like they were on later models. This is the weak link in pre92 trannys. </TD></TR></TABLE>

You know I have had this motor and tranny since 1999 and not once have I ever drag raced, or drove it like I stole it. But yeah I'm assuming it was the diff pin, because I found that peice pretty much mangled, as far as the spider gears in the diff goes well let's just say they're on the 14 freeway headed north to Palmdale/Lancaster (right underneath the over head pass of Red Rover Mine Road to be exact). And to top it off the same thing like what El Vap 133 said, the gears didn't grind as well, tranny was perfect to me. Oh well lesson learned J1/S1 tranny owners beware, replace your differential. As for my YS1 I being that this came out of a 92-93 JDM Integra XSi, I'm sure I won't have problems finding parts to rebuild in the future.

 

This happened to me about a year ago. I was pulling out of a parking lot nice and easy and bam the trans locks. I couldn't get it out of gear and there i am stuck in the middle of a heavily traveled road. I finally get it in neutral so we can move it. As my brother and I get out to push and see what happened there is trans fluid streaming out from underneath the car. After having the car trailered home and after further inspection we found the diff pin had sheared apart and tore the inside of trans apart and blew three nice size holes in the case. Needless to say the diff pin is definitely the weak link in these transmissions. Next time this happens I am going hydro.

 

fears losing his beloved j1. Man that would really put me in a bind, being the only car I own and I travel to and from school in it. (225 miles)
I know it's not the greatest hwy tranny, but its been dang near impossible to locate someone w/a ls 5th gearset.
Glad you had a backup man.

 

i had a simular problem on my 1979 280Z..

i was driving on the freeway, in 5th gear. Suddenly, i hear this loud pop, then a bang. The car feels like it's out of gear but it's not. For some reason, i'm stuck in third, it wont come out. The stranges thing, no matter what position the shifter is in, it's still in third. Reverse is third... 1st is third.... 5th is third, and even nuetrual is third.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B16_madman &raquo;</TD></TR><TR><TD CLASS="quote"> fears losing his beloved j1. Man that would really put me in a bind, being the only car I own and I travel to and from school in it. (225 miles)
I know it's not the greatest hwy tranny, but its been dang near impossible to locate someone w/a ls 5th gearset.
Glad you had a backup man. </TD></TR></TABLE>

Problem is I didn't have a backup I had to source a new trans and swap it before I had wheels again. It took about 3 weeks to finally get it all done so in the interim I had beg and borrow rides.

 

Quaife Differential swap... Anyone ever thought of that? These JDM tranny's are getting pretty rare and expensive... Maybe it's worth the $800+ to actually replace the shitty parts!

 

Well back in 99 when I first got the motor and tranny I really didn't know about the J1/S1/Y1 tranny's and I don't know how many other people would've known about the drawbacks of these 1st gen b-series. I probably wouldn't have thought about beefing up the differential then either. And till this day after posting this thread I have better understanding about the 1st gen cable tranny's. It's plain and simple from here on out anyone who owns any of the 1st gen b-series tranny's beef up your diff and learn from the our experiences. And the other drawback to this all is rebuilding of these tranny's (good luck). I knew of a JDM cable tranny out there that could have interchangable tranny parts from our US b-series and as it was posted above, which put atleast some sort of ease when I think about it all. However I did pick up my YS1 tranny (JDM XSi second gen cable) for $450 through Hondamotoronline. The CRX was down for only 2 days and it's now back on the road, reliable resources mades this happen.

 

I've seen it happen a few times......



You can see the diff pin in the lower mid/right of the picture. The diff pin is not harden and the spider gears eat through it. Once that pin lets go, it is like a grenade going off inside the tranny.

Only CHEAP cure right now, the possibility that the Phantom Grip "Diff Saver" pin would work.

I see dead trannys.........

 

Hey Mista Bone, I remember you from the Honda-Hybrid boards! Nice tranny btw. I bet you weren't granny shifting when that tranny grenaded.

 

Mista Bone to the rescue....

 

My friend's LS integra has a habit of shooting the diffs through the side of the tranny. That pin is ****. His happened once coming off of the line at the drags, another time it went pulling slowly out of mcdonalds. There was another tranny in there between those two, but I don't remember the circumstances.

 

not my tranny, I'll never own a DOHC B Series, EVER!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mista Bone &raquo;</TD></TR><TR><TD CLASS="quote">not my tranny, I'll never own a DOHC B Series, EVER!</TD></TR></TABLE>

lol, never say never....

 

mine ble up not because of the diff pin but, becasue the gears that sit on the pin shattered and locked the diff up and threw the gears around inside.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Yellb16crxsi &raquo;</TD></TR><TR><TD CLASS="quote">mine ble up not because of the diff pin but, becasue the gears that sit on the pin shattered and locked the diff up and threw the gears around inside.</TD></TR></TABLE>

Those are called Spider Gears.

 

thats what i thought i just didnt want to call them the wrong thing and look like an ***.

 

Happened to me 2 yrs ago, at the track. Mine still drove a good ways before it exploded though. It was a ultra nice, grind free S1. I threw the gears in a spare Y1 case and bought a quaife, it...