i love the M30 but come on 2 in one month

[m60b30530i]

Yes i blew the Diff yet again :redspot
that's 2 in one month , i guess the globs of torque just destroy them :( :devillook

well at least the 530i has a lsd that i can take. Is there any way to upgrade these Diffs to take more of a beating.


http://img19.imageshack.us/img19/1827/e34tow.jpg (http://img19.imageshack.us/my.php?image=e34tow.jpg)

[screwbiedoo15]

It's really quite rare for differentials to go bad like that. I'm wondering if some of your drive-line parts like the guibo, center bearing, and rear cv need replacing. If those were bad it could put a lot more strain on the diff.

[janders211]

How did you blow 2 diffs? What kind of power are you making....Something else is clearly wrong.

[m60b30530i]

It's really quite rare for differentials to go bad like that. I'm wondering if some of your drive-line parts like the guibo, center bearing, and rear cv need replacing. If those were bad it could put a lot more strain on the diff.


ill have to ask Ben i assume all of that was replaced there is no play in the drive shaft.

yeah the whole drive shaft was replaced at 185,000

[RT Dak]

Chris' Automotive sucks. :devillook

[m60b30530i]

Chris' Automotive sucks. :devillook

yes they do although they charged me nothing

[Stir Fry A Lot]

Tell the fat chicks to exit before burning out.

[m60b30530i]

Tell the fat chicks to exit before burning out.


:lol

[Pooch]

Are these LSD diffs that you are killing? What fluid are you running in them?

[russiankid]

Are you pulling a Jhower08 and turning around by dumping the clutch?

[m60b30530i]

Are these LSD diffs that you are killing? What fluid are you running in them?


one was a Lsd and we new it was going to die the other was a open

[neockder]

Are you pulling a Jhower08 and turning around by dumping the clutch?

Wait.. what?! Should I not do this on a regular basis?? :drunkani

[nmp411]

Wow, impressive!

Why haven't we seen pics since you picked up redfive's car?

[Binjammin]

It's really quite rare for differentials to go bad like that. I'm wondering if some of your drive-line parts like the guibo, center bearing, and rear cv need replacing. If those were bad it could put a lot more strain on the diff.

Damn near EVERYTHING on this car is new. Redfive owned it prior, and over the past two years between the two of us working on it I can hardly think of anything that hasn't been replaced or checked. The first diff started making noise like as soon as Tony got it, 3.46LSD. The second one I put in when the first blew, 4.10 open diff. I know this diff is good, it came out of a car I drove.


How did you blow 2 diffs? What kind of power are you making....Something else is clearly wrong.

:dunno It's an m30 with an SS maf kit on it. 5 speed, but really it's not making the power it did with the blower on the car. The blower's not on it anymore, so that wouldn't remotely explain the second diff.


Are these LSD diffs that you are killing? What fluid are you running in them?

First one yes, second one no.

[Sam Son]

what were you doing when it blew...and be honest...
note to self..do not let Tony drive my car

[russiankid]

Wait.. what?! Should I not do this on a regular basis?? :drunkani
If you don't want a broken diff mount. :stickoutt

[screwbiedoo15]

Damn near EVERYTHING on this car is new. Redfive owned it prior, and over the past two years between the two of us working on it I can hardly think of anything that hasn't been replaced or checked. The first diff started making noise like as soon as Tony got it, 3.46LSD. The second one I put in when the first blew, 4.10 open diff. I know this diff is good, it came out of a car I drove.


My bad, I forgot this was Redfive's old car. What else could be the culprit? I'm curious to know why these would keep on blowing, especially so quickly.

[Redfive]

What have you been doing to my poor car? I'm not sure how you manage to do that with a stock engine and stock tires. I've run much more on my differentials.

You need to change your name to the diff-buster.

[bigsixe34]

maybe if you stopped puttin in 4.10 diffs you wouldn't blow them up so quickly ;)

[m60b30530i]

What have you been doing to my poor car? I'm not sure how you manage to do that with a stock engine and stock tires. I've run much more on my differentials.

You need to change your name to the diff-buster.


seriously i was just driving normal before that i was doing a top speed run , cant say what she hit ill tell you over the phone:devillook .

yeah I'm stumped , when you had the blower the diff lasted all i have is the SS maf and im going threw them like a crack addict.


what were you doing when it blew...and be honest...
note to self..do not let Tony drive my car

i got off of exit 18 , shifted into 3rd and snap crackle POP and BOOM. the funny thing is i can put the car in gear the drive shaft spins and the speedo works but the car goes no were i wonder if the diff isn't totally wrecked.

[AP2FTW]

damn and i thought s2k diffs were weak :P

[m60b30530i]

damn and i thought s2k diffs were weak :P


yea my friend has a turbo s2k and he is worried it will blow

[Binjammin]

seriously i was just driving normal before that i was doing a top speed run , cant say what she hit ill tell you over the phone:devillook .

yeah I'm stumped , when you had the blower the diff lasted all i have is the SS maf and im going threw them like a crack addict.



i got off of exit 18 , shifted into 3rd and snap crackle POP and BOOM. the funny thing is i can put the car in gear the drive shaft spins and the speedo works but the car goes no were i wonder if the diff isn't totally wrecked.

It's wrecked. Very likely broken spiders, or bad pinion bearing.


damn and i thought s2k diffs were weak :P

They are, I don't know wtf he's doing. These diffs are known to be tough.

[m60b30530i]

well went to see if there was any fluid in the diff and nope there was less then a quarter in the diff. so i guess thats probably why it died. yet it made no noise it whined ever so slightly on deceleration. i remember the LSD whined like a dieing cat. i guess opens go quietly :)

[Binjammin]

It had fluid when I put it in... :confused

[m60b30530i]

starting the swap tomorrow, just started the 530i for the first time in over a month and the valve covers leak like there is no tomorrow good thing i i have gaskets sitting in the garage :). i cant wait to drop the diff and put in the new one i feel deprived, the m30 is like crack you just need more of it. I'm going nuts :ak

anyone want to come down to Patterson NY tomorrow to help me ?

[screwbiedoo15]

starting the swap tomorrow, just started the 530i for the first time in over a month and the valve covers leak like there is no tomorrow good thing i i have gaskets sitting in the garage :). i cant wait to drop the diff and put in the new one i feel deprived, the m30 is like crack you just need more of it. I'm going nuts :ak

anyone want to come down to Patterson NY tomorrow to help me ?


I'm curious to know, how does the m30 compare to the infamous b30? :stickoutt

[m60b30530i]

I'm curious to know, how does the m30 compare to the infamous b30? :stickoutt


omg this car is amazing I'm never going back NEVER. i can chirp tires in 4th :evil2

I LOVE THE M30 :cool

[Binjammin]

omg this car is amazing I'm never going back NEVER. i can chirp tires in 4th :evil2

I LOVE THE M30 :cool

Uh huh. I think we've discovered how you killed two diffs in a month. :rolleyes

[m60b30530i]

Uh huh. I think we've discovered how you killed two diffs in a month. :rolleyes


hey hey no this was only on a few times I'm not beating the living shit out of this car lol , i love her

[Pooch]

Chirp in fourth? I'm not really sure I believe that.

[m60b30530i]

Chirp in fourth? I'm not really sure I believe that.


with the 4.10lsd and upgraded clutch plate and pressure plate yes it was possible.

[PorscheH6]

If you're chirping tires at all, you're not shifting correctly.

At least, that's how I was taught.

[m60b30530i]

If you're chirping tires at all, you're not shifting correctly.

At least, that's how I was taught.


i know like i said it was on a few occasions , i dont pop the clutch on a regular basis

[Binjammin]

Dude... stuff like that is murder on parts...

[m60b30530i]

Dude... stuff like that is murder on parts...


yeah i know :(

[screwbiedoo15]

yeah... even with the 4.10lsd and you're chirping 4th you're definitely beating on the car a ton... I can chirp 2nd if I shift really really roughly but there is no way I'll chirp 3rd.

[E34nication]

Chirping 4th? What kind of clutch does that thing have?

[m60b30530i]

Chirping 4th? What kind of clutch does that thing have?


its a secrete

[Binjammin]

Keep your secretions away from me.

[janders211]

haha^

Chirping tires in 4th is just not possible unless you're running an open diff, a rear end with 1/4 the stock ratio and you have 165/75/15's

The chirp was probably some metal on metal contact as your diff begs for more fluid.

[Binjammin]

haha^

Chirping tires in 4th is just not possible unless you're running an open diff, a rear end with 1/4 the stock ratio and you have 165/75/15's

The chirp was probably some metal on metal contact as your diff begs for more fluid.

No, you can totally run the engine to like 4 grand and dump the clutch and chirp 4th. Diff just won't last too long. BTW, it was an open 4.10...

[BMWheadSpence]

you'd think it was a good thing a member got that car, but apparently not

:D

[janders211]

No, you can totally run the engine to like 4 grand and dump the clutch and chirp 4th. Diff just won't last too long. BTW, it was an open 4.10...

Maybe if you're sitting still and do that ...I guess I should have clarified that I referred to actually driving the car...(i.e. going from 3rd to 4th)..not dropping the clutch at a stop light while in 4th.

Of course an open diff makes it more possible, and believe the correct term would be chirp the 'tire'.

[Binjammin]

Maybe if you're sitting still and do that ...I guess I should have clarified that I referred to actually driving the car...(i.e. going from 3rd to 4th)..not dropping the clutch at a stop light while in 4th.

Of course an open diff makes it more possible, and believe the correct term would be chirp the 'tire'.

Nah, you can do it rolling too, I'd show you but I don't want to break shit on my car :rofl

[janders211]

Nah, you can do it rolling too, I'd show you but I don't want to break shit on my car :rofl

I'll take your word for it....remind me not to buy drivetrain parts from you.

[Binjammin]

I'll take your word for it....remind me not to buy drivetrain parts from you.


Hahaha see above, I DON'T want to do it because I don't want broken stuff. Believe it or not, you can beat on your car gently, or you can be violent, but the cars I've pulled parts off of weren't cars I drove as drivers, they were picked up as parts cars.



I'll take your word for it....remind me not to buy drivetrain parts from Tony.

Ftfy.

[wanganstyle]

i supposed if I lifted at WOT on top of 3rd, did a full speed turn in AND dumped the clutch (ala clutch kick to send the car sideways) I could see spinning tires in 4th with a M30.

Whatever you are doing to break traction in 4th in a stock m30 powered car, you got the answer to why the diffs are dying...

if you want to re-configure a bmw lsd to be stronger, just remove 2 spacers and add 2 more clutches to it. its designed to do it from the factory.


heres the thread:

http://www.e30tech.com/forum/showthread.php?t=44131

take LSD apart, remove 2 spacer things, install 2 more clutch plates (buy them new or pillage another oem lsd)

[5mall5nail5]

omg this car is amazing I'm never going back NEVER. i can chirp tires in 4th :evil2

I LOVE THE M30 :cool

LOL no you can't. Look down at the shifter next time. It says "2".

[BMWheadSpence]

i can chirp all 4 tires into 6th gear :redspot

[m60b30530i]

thanks for the support guys love all of you , swap started today ill finish it tomorrow.


:fingerboi

[E34nication]

I didn't read read the end of page one but you should swap to the b30... Sounds like you have enough clutch to handle the v8 torque.

[m60b30530i]

I didn't read read the end of page one but you should swap to the b30... Sounds like you have enough clutch to handle the v8 torque.


? torque the M30 feels allot more torque y then the B30 allot more.

[E34nication]

Dude.... It's a v8.

[m60b30530i]

Dude.... It's a v8.
there's v6's that make more torque then the B30, if it was a B40 then the story would be different

[E34nication]

Dude. The m30 is 16 2/3% larger. WTF?

[m60b30530i]

Dude. The m30 is 16 2/3% larger. WTF?


what ? i lost you

[PorscheH6]

Dude. The m30 is 16 2/3% larger. WTF?


The M30 in the 535i is a 3.4 liter.

M60's are cammed pretty high; you don't see power until 4K RPM's.

[E34nication]

Fine. 13.33% repeating larger.

[Redfive]

Chirping 4th? What kind of clutch does that thing have?

I'll reveal the secret. Its a Dinan HD pressure plate designed to work with the S2 turbo 535. It has mad pressure.


Dude.... It's a v8.
b30 220hp/207tq
M30 207hp/225tq
You feel the difference. I got to drive a stock 540/6 this weekend and I have to say that the M30 pulls better down low. Especially with the supercharger setup.

But still. I've lit the tires on my BMW in all the gears from a full speed roll but that's with the turbo and the tires were cold and there was some cornering involved. However, the driveline is always fully engaged. I never drop the clutch on my cars. That's the only way to preserve components running 2-3 times the factory power. (ie, the design safety factor)

[m60b30530i]

update: got the diff out of the white car it wasn't too bad , starting on the black :)

http://img269.imageshack.us/img269/8195/535garage.jpg (http://img269.imageshack.us/my.php?image=535garage.jpg)

http://img198.imageshack.us/img198/1710/whitecarnodiff.jpg (http://img198.imageshack.us/my.php?image=whitecarnodiff.jpg)

http://img198.imageshack.us/img198/6091/pvcpipe.jpg (http://img198.imageshack.us/my.php?image=pvcpipe.jpg)

i love that piece of pvc pipe , i used it as a breaker bar :) the impact gun sucks so i had to use my small muscles :)

[neockder]

Red / Bin - So is it safe to say that IF I wanted to turbo in the future, I'd have to beef up the new stock clutch/pressure plate I just put in?

[Binjammin]

Red / Bin - So is it safe to say that IF I wanted to turbo in the future, I'd have to beef up the new stock clutch/pressure plate I just put in?

If you've got an m30 and you want boost, be prepared for a slipping stock clutch.

[BMWheadSpence]

how about pretty moderate boost?
i'd like to turbo mine in the distant future but how much will the stock setup take until it not holding tight?

[m60b30530i]

how about pretty moderate boost?
i'd like to turbo mine in the distant future but how much will the stock setup take until it not holding tight?


stock head gasket i heard can take up to 24psi before having problems but i would upgrade the head studs anyway , just so i can feel safe.

finished , the DIFF DIDNT BLOW UP , it was just fine all that work for nothing :( I'm tired :)