What LSD's do people recomend for the 318is ??

[juniorGT]

as tittle really, my car is in dire need of a LSD, but not 100% sure what ratio is best suited for the 318is? its a track car that i use daily..

would like to know your views/opinions welcome... whats been treid and tested and worked the best

thanks

J

[wrcarter]

Currently you should have a 4.10 open diff.

Therefore a 4.10 LSD would be perfect but they are rare. (ideally large case if used as a track car but they are even rarer)

3.91 wouldn't be too bad either especially if the car is modified a bit. And these are large case too

[Bob_S]

i wouldnt worry an is hasnt enough poke to spin good tyres

[Dave_M3]

to be completely honest, Bob actually has a point if the tyres are good sticky ones... (This says alot coming from me )
It will only have power to break the rear wheels loose in 1st or just about in 2nd in the dry...


But in saying that, The LSD has transformed my car as a daily driver with a large case 4.1 LSD.
Feels much more sure footed on slippy roads or looses surfaces and especially now as the tyres are coming to the end of their life again.


If it was a track car, I'd definitely try find a 4.27 or 4.45. Might be lucky to find some oddball small case 4.45 that was in a 316i auto or something
There was one for sale on here a few months ago.

Other route to take would be.... now this all just an idea I have at the moment so open to correction.

Get a early E34 520i Auto which will be 4.44 (I think these are medium case)
And a 3.91 LSD out of a sport and transfer the 4.44 cwp into it.

Apparently some 325i autos have large case 4.45 diffs but I can't seem to find any and there doesn't seem to be any E30 with a 4.45 large case on realoem.

[m4xos]

i wouldnt worry an is hasnt enough poke to spin good tyres

i have a 318is chipped and sits on 95 per cent of 2.5r's ass's, i have a 2.5 sport aswell and there isnt that much between them!! theres nothing wrong with a well maintained FAST 318is!!!

to reply to the original question i have gone through 3 lsd's and an open diff in my 318is driftin, obviously a lsd is better but with my 318 it kicks out both ways which is what i like!! i have just stuck with another open diff as there alot cheaper to break!!
you could always weld it up but as you say, you use it for regular driving so not the best result you want...

i have kept 2 broken 318is lsd diffs, and if you wanted one, you could always recondition it, theres a chap on here thats aparently the bees knees!! but your car mate, your decision!!

[Bob_S]

i wouldnt worry an is hasnt enough poke to spin good tyres

i have a 318is chipped and sits on 95 per cent of 2.5r's ass's, i have a 2.5 sport aswell and there isnt that much between them!! theres nothing wrong with a well maintained FAST 318is!!!

oh don't start with the chipped is can of rust..
I've been there done that, they aren't fast and tbh most 2.5's are long in the legs and tired.
Try an m50 or s14 powered e30 then tell me an iS is fast.. or FAST as you say
as for blowing diff's, that's through mis-use not sheer power

[Dave_M3]

An iS' or 325i for that matter are not FAST!

Advantage of an iS is just that it handles that little bit better and is far cheaper on running costs and depending on what your driving style is, it can be more fun to drive if you like revy engines whereas a 325 is mostly about cruising along with little effort.

I don't know how people keep breaking small case LSDs or even heard of one person breaking a large case diff on an iS. I also know of somebody that's broken quite a few.
It's totally misuse and trying too hard by dogging the clutch constantly while drifting.

Chipping an iS doesn't make it rocket, it just makes it a alot better to drive and a little bit more fun and will keep up with a standard 325 purely because they have a crappy old M20 that probably has lost as much bhp as the iS has gained with a chip.

Real power in terms of being "fast" in an E30 doesn't start until you get over 180bhp me thinks...
Below that it's just really about the way an E30 is to drive.
Even when E30 M3s came out, people didn't even think they were "FAST" ffs, not to mention the baby M3
They just marvelled at the whole balance and handling of it and this is what made it an icon.

[Bob_S]

Dave, a 325 with sports susp on will outhandle an iS sorry to tell ya! you can plough on on a 2.5, the iS's just push the front ends out

[m4xos]

dont wee on my grave lol, its Fast compared to other IS's i meant, i didnt mean it sooooooo fffaaaasssssttt it beats a rocket ship cause ive had quicker cars than this, obviously!!!

yea you can all laugh, my 318is would have no problem driftin broadside overtakin u round any bend in you jet boots e30's,
mmwwwwaaahhhhhhhhh!!!

[Bob_S]

dont wee on my grave lol, its Fast compared to other IS's i meant, i didnt mean it sooooooo fffaaaasssssttt it beats a rocket ship cause ive had quicker cars than this, obviously!!!

yea you can all laugh, my 318is would have no problem driftin broadside overtakin u round any bend in you jet boots e30's,
mmwwwwaaahhhhhhhhh!!!

catch an M3? I doubt it looks like your fingers need to follow your head - to bed ;)

[Dave_M3]

yea you can all laugh, my 318is would have no problem driftin broadside overtakin u round any bend in you jet boots e30's,
mmwwwwaaahhhhhhhhh!!!

The Force is strong with this M42 owner

My iS has a bit more than just a "plug and play" chip and keeps up with the old 325i yardstick if you like and beats off plenty of those bits of japscrap but I still think it's no good, lol.... hence I'm going in search of more power

Unless an iS was supercharged/turboed or had an S42, I can't see it pass an S14 engined car around the outside in any corner.
The iS (unless heavily breathed on) are the best all round E30 apart from the M cars and E30s with modern engines dropped in... end of story really.

Anyway.......

a good choice of what LSD would be good for a 318iS track/road car???

[m4xos]

dont wee on my grave lol, its Fast compared to other IS's i meant, i didnt mean it sooooooo fffaaaasssssttt it beats a rocket ship cause ive had quicker cars than this, obviously!!!

yea you can all laugh, my 318is would have no problem driftin broadside overtakin u round any bend in you jet boots e30's,
mmwwwwaaahhhhhhhhh!!!

catch an M3? I doubt it looks like your fingers need to follow your head - to bed ;)

get in my car and your come out with brown skiddies!! m3 or no m3,

[Bob_S]

Dave, M50 brother!!! you KNOW it's the way forwards!

and how old are you m4xos? You sound like a true hero, have you thought of entering D1 with your uber powerful all singing all dancing, stig like driven iS? all 130bhp?

[m4xos]

just because you drive your m3 FAAASSSSTTTTTTTT on a straight road, doesnt mean that my lil baby wont sing and dance round you round the bends!! yes yours is obviously quicker than my aparent shitter, but all depends on the driver BOB!! take it with a fine pinch of salt for all i care, im 21 mate, 1st car i learnt to drive in was an e30 at 13! lot of experience since then!!!!! end of!!

[Dave_M3]

dont wee on my grave lol, its Fast compared to other IS's i meant, i didnt mean it sooooooo fffaaaasssssttt it beats a rocket ship cause ive had quicker cars than this, obviously!!!

yea you can all laugh, my 318is would have no problem driftin broadside overtakin u round any bend in you jet boots e30's,
mmwwwwaaahhhhhhhhh!!!

catch an M3? I doubt it looks like your fingers need to follow your head - to bed ;)

get in my car and your come out with brown skiddies!! m3 or no m3,

Have you ever been in an M3?!?
They feel faster and better than any E30 even when they are just pottering along the streets!!!

People have a spin in my iS and it's usually the same with...
316 owner "Can I buy it?!?" or "I want an iS engine!!!"
Other 318iS owner "Fuck, this one is quick!"
325 owner "It's pretty quick in fairness"
M50 owner "It's nippy alright, isn't it?"

But, With the few spins I've had in an M3 I'm just blown away


I'm not turning my iS into a 6 pot Rob!!!
It's just against everything I stand for, lol.
I'll supercharge it and then get another black E30 to frop the M50 into as a drift slag to keep you happy

[Jon_Bmw]

You said you'd drift round the outside of him?

I have yet to find a slower way of going round a corner than drifting. Fun it may be, slow it definatly is.

[m4xos]

all depends on how big your balls are, cum up to a roundabout and drift at 20mph, or............
cum up to a roundabout at 90!!
tomorrow i will post a video on youtube and do a link to show you, me driftin round a round about well over 80, got vid of the clock speed as well whilst driftin, will show ya my 360 drift aswell,

[Dave_M3]

Posting videos of himself drifitng on public roads including clear shots of his speedo.

A true sign of a hero alrght

[m4xos]

like i said got the balls, dave_m3 obviously hasnt and doesnt want to get a spec of dust on his car, hence probly cant drift, toooo enrapped in his beloved m3,
by the way, in progress of building my turb, so

[Dave_M3]

Meh, I prefer to drive cars properly quick when the opportunity arrises and there is plenty of people will tell you that I wouldn't be a man for shying away from a corner.

Funnily enough... at the moment, my iS is covered in dust and dirt and lots of frost from having fun on icy back roads

I don't have an M3 but I want one and would still want one even if my iS had 600bhp.

turbo iS is nice.... I reckon a supercharger will do me fine for the road car though since I can be working on the S42 for the track car.... now where's that ass smiley



Think this thread should be locked up since it's just turning into a usual iS' are brilliant etc (even though they are, lol)

Seems we've decided we've won the 4 pot 6 pot debate but some of us are now going after the "other" 4 pots for a bite


And here I was thinking somebody would shed some light on could an early 520i Auto diff work in a E30 large case diff with an LSD

juniorGT: Try find a 4.27 or 4.45 (preferrably large case) anyway and if it's not an LSD you could possible rebuild a sports LSD unit into it or even get a KAZZ unit for it but they are pretty pricey.
I would not go any lower than a 4.1 for a track car anyway

[juniorGT]

Meh, I prefer to drive cars properly quick when the
juniorGT: Try find a 4.27 or 4.45 (preferrably large case) anyway and if it's not an LSD you could possible rebuild a sports LSD unit into it or even get a KAZZ unit for it but they are pretty pricey.
I would not go any lower than a 4.1 for a track car anyway

thats what i wanted to know, cheers buddy

[Jon_Bmw]

Basically you want the top 4 gears to be as close as possible for track racing, sadly most factory boxes that I know of come with a long ish 1st and 2nd gear and there is not a lot you can do about it. It's not the end of the world as you will never use 1st and probably only ever use 2nd from 40mph upwards.

Changing the diff or final drive is the only easy way to bring the gears closer together. As Dave said you want the highest diff tag number you can get your hands on. The final drive in affect shorterns(but lowers speeds achievable, which is good in each gear) all of the gears available without having to take the box off and fit custom ratios.

The shorter the gears, the more time the car will spend above 4500rpm, ideally 5k rpm.

HTH

Jon

[Morat]

just because you drive your m3 FAAASSSSTTTTTTTT on a straight road, doesnt mean that my lil baby wont sing and dance round you round the bends!! yes yours is obviously quicker than my aparent shitter, but all depends on the driver BOB!! take it with a fine pinch of salt for all i care, im 21 mate, 1st car i learnt to drive in was an e30 at 13! lot of experience since then!!!!! end of!!

Pardon?

[tomstickland]

I sourced a 4.1 LSD from the states. There's a few specialist breakers out there you can find via google.

[Dave_M3]

Yep, there is actually quite a few 4.1 LSDs that pop up on the US forums account of the US E30 M3s and 325i Autos all having large case 4.1s and it seems the US cars were speced with LSDs quite regularly even if they were auto...

The shipping from the US is the killer though and even trying to find a person that is willing to ship it over apart from the cost can be tricky too

[Bob_S]

like i said got the balls, dave_m3 obviously hasnt and doesnt want to get a spec of dust on his car, hence probly cant drift, toooo enrapped in his beloved m3,
by the way, in progress of building my turb, so

omg your a cock!! ahaha! roads are for driving on, tracks are for proper drivers not drift cocks lol

dave i appreciate your valid reason for not putting tha superb engine in

[hoshy]

There's some diff info on the wiki: http://www.e30zone.net/e30zonewiki/inde ... fferential

I bought my 4.1 from the states- www.diffsonline.com I think. As said - for an iS on the track 4.1 is the longest you want. 4.27 or 4.44 would be better - again as said, get one built up from another car's diff. When you have it built up it might be an idea to get it rebuilt - perhaps the lock-up increased too. I recently used www.gearboxman.co.uk to have mine rebuilt and I'm happy with it. However, buying a diff then having it rebuilt later is not the cheapest way around. For that total cost I should have got myself a Quaife but that's life.


P.S. C'mon m4xos - money where your mouth is. I wanna see this video of you drifting a roundabout at 80. Stupid as it might be and not in any way big or clever it would be quite impressive.

P.P.S. My remapped iS kept nose to tail with 3 different 325s from 0-80. 7k rev limit and no mechanical sympathy is all that's needed

I reckon that the difference is in the gearing. 30bhp difference is not huge difference. Also worthy of note that a good remap will release 10-12 horses on an iS, but the gains to be had on the m20b25 seem to be a bit smaller from what I've seen.

[DHFiS]

I put a 4.10 in mine which I bought from the USA Ebay site. Back then the dollar pound exchange rate was about 2:1 and it cost $590 delivered by air.