antony 0 Report post Posted June 11, 2007 is this a small or medium case diff? cheers antony Quote Share this post Link to post Share on other sites
Silver Fox 43 Report post Posted June 11, 2007 If it has 4 bolts on the output cover it's a small case, that's what it looks like, the med case have 6 bolts. Quote Share this post Link to post Share on other sites
antony 0 Report post Posted June 11, 2007 not what i wanted to hear, but cheers. Quote Share this post Link to post Share on other sites
Silver Fox 43 Report post Posted June 11, 2007 You know that they are interchangeable don't you? Quote Share this post Link to post Share on other sites
antony 0 Report post Posted June 11, 2007 o, that makes life easier. So the internals can be switched? Quote Share this post Link to post Share on other sites
Mike 1 Report post Posted June 11, 2007 (edited) no, but any size case will go into any e30. what are you trying to achieve? Edited June 11, 2007 by Mike Quote Share this post Link to post Share on other sites
antony 0 Report post Posted June 11, 2007 I'm converting to manual (eventually), and have to change the diff because the current one will be to short with the manual gearbox ratio. I've got a medium case one to put in. so it should swap over? Quote Share this post Link to post Share on other sites
Mike 1 Report post Posted June 11, 2007 yip, you might need to adjust the driveshaft length though. There is a large nut on the driveshaft about halfway along. You'll need to take exhaust and heatshields off to see it. Loosen that nut, fit the diff then tighten everything back up. Quote Share this post Link to post Share on other sites
antony 0 Report post Posted June 11, 2007 thanks. so when does it matter if youve got a small or medium case? Quote Share this post Link to post Share on other sites
Gus 5 Report post Posted June 11, 2007 also, the side shaft seals dont fit... a metal cone sort of thing..the small case ones stick in further..a med case wouldnt fit with small diff seals, a med case with small case seals will leak oil Quote Share this post Link to post Share on other sites
antony 0 Report post Posted June 11, 2007 so i cant swap them at all? or i just cant swap the internals? Quote Share this post Link to post Share on other sites
Mike 1 Report post Posted June 11, 2007 haha gus your confusing the poor guy. Just swap the whole unit over. It will work fine. I have done the same thing with my car. I'd only start to worry about a small case over 200hp Quote Share this post Link to post Share on other sites
OLLIE 26 Report post Posted June 11, 2007 and consider the small case sold (to me) when you take it out Quote Share this post Link to post Share on other sites
antony 0 Report post Posted June 11, 2007 its a 4.45:1 But i wouldn't hold your breath for it. and the freight would probably cost the same as one in auckland. Quote Share this post Link to post Share on other sites
OLLIE 26 Report post Posted June 11, 2007 its a 4.45:1 But i wouldn't hold your breath for it. and the freight would probably cost the same as one in auckland. ah my bad, wasn't thinking too well then. Quote Share this post Link to post Share on other sites
Andrew 30 Report post Posted June 11, 2007 I'd only start to worry about a small case over 200hp I've only just broken the small case in my race car - that took and absolute thrashing. Quote Share this post Link to post Share on other sites
Mike 1 Report post Posted June 11, 2007 I've only just broken the small case in my race car - that took and absolute thrashing. and your 185whp or something? was yours lsd? would that make a difference to durability? Quote Share this post Link to post Share on other sites
Andrew 30 Report post Posted June 11, 2007 and your 185whp or something? was yours lsd? would that make a difference to durability? Yep about that power - mine was welded locked Quote Share this post Link to post Share on other sites
