wrecked diff?

[A18A]

i have this problem where my car randomly makes a clunk when i take off, not as soon as I apply load on the wheels, but about 1 second after I've started moving. I thought it was my engine mounts, but after replacing them (solid ones with stock ones) the problem became worse (I might just swap the other ones back in)

well today I found out there's lots of play in the diff (i think?) I put the car in gear, jack up one side, and i can rotate the wheel about 45 degrees before it stops. same goes with both sides, I checked the axles & intermediate shaft, all of which are in good condition, meaning the play is inside the gearbox somewhere.... so what do now? I need this car to work properly over the next few weeks reliably, cause I'd rather not be stranded in the middle of nowhere

[A18A]

it only makes the clunk sound when moderately turning at low speed. when driving at a decent speed (30-40kph +) it's goes fine. also when rolling to a stop it sounds like you can hear something in the engine bay broken rattling around? but once stopped, you can't hear it anymore.

i need help fast, i will convert the car back to auto if i need to as a very last resort. i've got 4 days before long trips begin

[A18A]

bump

[lostforawhile]

are you sure it's not something loose like flywheel bolts or something broke in the clutch? Mine has been like that for years and I've never had an issue

[A18A]

hmm good thinking, i hope its something like that. I'll try and check that now. hopefully that can be done by just removing that little cover

[A18A]

okay diff is indeed fucked. i pulled one cv joint out, and after all the metal oil came out, I could stick my finger in there & wriggle that pin all over the place. bugga. now I have to find all my automatic conversion stuff

[Dr_Snooz]

That sucks man. You're more mechanic than I am that you are just going to convert your car back to AT in 4 days. You make it sound like changing your socks. Good luck with that.

I have to ask though: how in God's name did you break a diff?

[Bglad420]

I went through 2 tranny's. blew up both diffs. They are weak. Open diffs FTL.

[Strugglebucket]

Yup, I've had a diff explode too. But it was a used transmission that I hadn't bothered to rebuild.

Left behind a trail of oil, pinion gears and aluminum shrapnel on the road. Like a giant snail robot.

[A18A]

what the flying blueberry FUCK!!
I got the auto box bolted on to the motor all sweet as, nothing out of the ordinary, then as im lifting the lot on the hoist, this happened:
http://img211.imageshack.us/img211/572/img0706medium.jpg
now I only have 2 more working b20a gearboxes :mad:

[Hauntd ca3]

what a rough prick!

[A18A]

hay it was all going just like your normal swap, no idea why that happened though. now for some more bad luck, the other b20a box wont even bolt on to the motor???

I have a b20a bolted to a auto box behind the garage, ill drag that out tomorrow since it's all together & working & put that in the car. fun

[A18A]

okay auto conversion is done minus atf, I will be so pissed if the car wont move with that stuff in it

[A18A]

woot car drives now yay

[AccordB20A]

whats the engine like???lol

[A18A]

the engine seems a lot better than the other one! it doesn't smoke at all unlike what the other one did, feels like it has moar power too

[AccordB20A]

win win..................wait... an auto feels more powerful than a manual?!?!?! was ur other engine a blacktop and this a gold top?!?!

[Keachman1]

What happened to the auto trans to cause the crack? Did it fall when lifting it into the car?

[2oodoor]

yes what made that case crack like that, inquiring minds need nourishment..

Im glad you got wheels rolling again!

[A18A]

is the pin supposed to look like this?
http://img842.imageshack.us/img842/7587/img0810medium.jpg

[AccordB20A]

man i laughed so hard when u sent me that pic, even the sattelite tv guy that was here at the time was like wtf lol. spider gears ate the pin away.

[A18A]

okay so i smashed apart a auto gaybox
http://img716.imageshack.us/img716/7485/img0812medium.jpg
and got teh diff out
http://img253.imageshack.us/img253/9849/img0813medium.jpg
only to find out it's different to the manual diff
http://img407.imageshack.us/img407/3166/img0817medium.jpg
http://img809.imageshack.us/img809/8153/img0818medium.jpg
fail.

i took the inside gear thingies out of teh auto diff and stuck them in the manual one
http://img189.imageshack.us/img189/9803/img0822medium.jpg
seems to fit, i haven't put the pin in yet though, but here's a comparison between a good, worn & broken pin lol
http://img402.imageshack.us/img402/9811/img0821medium.jpg

lets hope this all goes back together well. First time I've pulled a gearbox apart :eek:

[Hauntd ca3]

hope it duz work eh.
then just dont beat on it so much

[AccordB20A]

hope it works

[A18A]

well i stuck the pin in, fitted with a little bit of hammer, everything feels good so now lets put it back together
http://img521.imageshack.us/img521/1642/img0824medium.jpg

[Oldblueaccord]

those small gears we call spider gears.

So the auto box has a thicker gear ,picture on left ?


wp

[AccordB20A]

the auto diff is physically smaller than the manual one by the looks, at least replacing the pin should do the job.

Do you reckon the wear from the spider gears on the pin was caused from rough gear changes or the wrong oil. ive had like 4 b20a boxes die cause of this pin and its not like i abuse them that hard

[A18A]

yay picture time.

empty box
http://img573.imageshack.us/img573/8690/img0825medium.jpg
+1 diff
http://img831.imageshack.us/img831/16/img0827medium.jpg
+ gears and selectors
http://img195.imageshack.us/img195/2954/img0828medium.jpg
+ shifting mechanism
http://img412.imageshack.us/img412/2927/img0829medium.jpg
gearbox done
http://img717.imageshack.us/img717/8620/img0831medium.jpg
http://img513.imageshack.us/img513/613/img0830medium.jpg
attached to motor
http://img205.imageshack.us/img205/7238/img0832medium.jpg
http://img341.imageshack.us/img341/8422/img0835medium.jpg
old motor
http://img840.imageshack.us/img840/3087/img0836medium.jpg
new motor
http://img222.imageshack.us/img222/4572/img0838medium.jpg

the car now goes yay. good to have a manual transmission again. I hope it lasts

[AccordB20A]

i hope you didnt forget to put in your clutch plate haha

[Oldblueaccord]

Dunno really. Pin wear is somewhat common on open diffs like in rear wheel drive cars. I replaced the spiders/pin on my wifes Astro van at 150k miles.

I m thinking dirt roads alotta scatchin of the front wheels yeah the shock will wear it out.

wp

[MessyHonda]

im not happy with the b20 trans...i want to build a adapter plate to bold up a b16 trans

[A18A]

Dunno really. Pin wear is somewhat common on open diffs like in rear wheel drive cars. I replaced the spiders/pin on my wifes Astro van at 150k miles.

I m thinking dirt roads alotta scatchin of the front wheels yeah the shock will wear it out.

wp

indeed. wrong oil & dirty oil probably doesn't help much either

[Hauntd ca3]

and driving like a mad man wont help either

[AccordB20A]

which is why im importing a type r LSD from japan to see if that fits :)