straight6pwr Posted January 9, 2017 Report Share Posted January 9, 2017 5 hours ago, GunMetalGrey said: The most peculiar one of them all. I wanted to check the diff to see if it was an LSD or open, and had the rear of the car in the air. I spun one wheel forward and watched to see what the other side did. It did nothing. I went to the other side and spun it and I got the same result. So either this thing has a broken open diff (seems odd) or an EXTREMELY worn out LSD. More digging on that later! well its an open now, in either scenario. i am also curious as to why...i found that scenario all over the internet, but no one seems to have an answer for whats going on. Quote Link to comment Share on other sites More sharing options...
HipMF Posted January 10, 2017 Report Share Posted January 10, 2017 The driveshaft apparently has less static friction than the opposing wheel, despite being geared up... My guess would be that the brakes (or parking brake) is dragging slightly. CV joints full of mud/tar? Can't really think of any other logical reasons... CV joint joint friction might make sense, since the suspension is at full droop, whereas the driveshaft is in a straight(ish) line. Quote Link to comment Share on other sites More sharing options...
jc43089 Posted January 10, 2017 Report Share Posted January 10, 2017 Yea it just depends where there is more friction. While we are on the discussion of differentials, I have an open and an LSD for my e36, the open spins very easily but the LSD is much stiffer to turn. Is this an indicator that something is wrong or is that just how and LSD is? I have never had one before. I haven't used it in my car yet but it came from a crashed m3 with low miles so I assumed it was ok. Quote Link to comment Share on other sites More sharing options...
Earl Posted January 10, 2017 Report Share Posted January 10, 2017 The fluids could be different viscosities. Quote Link to comment Share on other sites More sharing options...
m42b32 Posted January 10, 2017 Report Share Posted January 10, 2017 2 hours ago, jc43089 said: Yea it just depends where there is more friction. While we are on the discussion of differentials, I have an open and an LSD for my e36, the open spins very easily but the LSD is much stiffer to turn. Is this an indicator that something is wrong or is that just how and LSD is? I have never had one before. I haven't used it in my car yet but it came from a crashed m3 with low miles so I assumed it was ok. The 4.10 LSD I have for my e30 is also very stiff to turn by hand, I figured that was normal since it spins smoothly, haven't had the back cover off yet to inspect. No idea on mileage and condition though as I got it with my M3 suspension. Quote Link to comment Share on other sites More sharing options...
jc43089 Posted January 10, 2017 Report Share Posted January 10, 2017 Good to know. They are much more different in resistance to turning than fluid would cause. More like 2 hands to turn the input shaft on the LSD while the open turns easily with one hand. Quote Link to comment Share on other sites More sharing options...
Jdesign Posted January 12, 2017 Report Share Posted January 12, 2017 There are so many variables that could cause different feel and resistance. Most clutch types will have wear in the clutches and or different fluid viscosity that two of the exact same 4.10's could feel completely different. Quote Link to comment Share on other sites More sharing options...
Bassboy3313 Posted January 12, 2017 Report Share Posted January 12, 2017 The e28 LSD I will be throwing in the e21 has a somewhat notchy feel to it when turning by hand with no fluid in it. Not sure what that's about. Quote Link to comment Share on other sites More sharing options...
GunMetalGrey Posted January 13, 2017 Author Report Share Posted January 13, 2017 While we are playing head gasket games across all 3 of my e30's we may as well check this one. I think it's leaking, as there is air entering the system from somewhere and the car slowly overheats at idle, and won't stay at 1/2 temp ever. Going to do the coolant gas test tonight and confirm or deny it. Yay Quote Link to comment Share on other sites More sharing options...
Jdesign Posted January 13, 2017 Report Share Posted January 13, 2017 LOL Quote Link to comment Share on other sites More sharing options...
GunMetalGrey Posted January 16, 2017 Author Report Share Posted January 16, 2017 So it looks like the HG wasn't the issue luckily! I replaced the radiator with the one I had been using this summer in my M52 car, and bled the system and my overheating issue went away. The old radiator didn't really drain, so I think there was something plugged in there. As a result of this I decided to start doing bushings. This is always a whole lot of fun! Of course the parking brake fought me on the way out. Plan is to remove the subframe bushings from my red e30 and install riser bushings into that car, and take the subframe bushings from that car and put them in the 318. I will also be doing the trailing arm bushings, rear shock mounts, and replacing the diff with an LSD. I should also be obtaining some snow tires soon for the car. It feels good to finally get this thing under the knife. Though I always forget that doing the subframe is pretty lame! Quote Link to comment Share on other sites More sharing options...
GunMetalGrey Posted January 16, 2017 Author Report Share Posted January 16, 2017 Poly RTAB's and shifter carrier bushing ordered. Got a line on some RSM's from Mr. Suspenceful. Got another line on some Altimax Arctics on bottle caps that are ready to rock. Quote Link to comment Share on other sites More sharing options...
KaiserRolls Posted January 16, 2017 Report Share Posted January 16, 2017 Want my lowering springs? Quote Link to comment Share on other sites More sharing options...
GunMetalGrey Posted January 16, 2017 Author Report Share Posted January 16, 2017 10 minutes ago, KaiserRolls said: Want my lowering springs? I do Quote Link to comment Share on other sites More sharing options...
KaiserRolls Posted January 16, 2017 Report Share Posted January 16, 2017 I will not throw them away then Quote Link to comment Share on other sites More sharing options...
GunMetalGrey Posted January 17, 2017 Author Report Share Posted January 17, 2017 Got to work on the other car. The other subframe came down with much less drama, so that was quite nice! The bushings that were in the 325 show some odd shaping and I'm trying to determine the cause. This is the bottom bushing (facing up though) This is the top bushing (correct orientation) The bottom bushing has become concave, and I'm trying to determine if that was the result of me not running a washer on the top of the top bushings. I think that makes sense, but at the same time it almost makes less sense. The plate that the lower rests on has a raised middle portion so I would expect some deformation, but not quite that much. RTAB's ordered, 4.10LSD located, things are starting to move smoothly on this! Quote Link to comment Share on other sites More sharing options...
GunMetalGrey Posted January 18, 2017 Author Report Share Posted January 18, 2017 Boom! 4.10LSD obtained. It's a medium case, which is meh for the car but I couldn't be picky as there were very few options available. I was working on unbolting the CV's, then I realized I can just swap the diff cups over and not have to unbolt anything. I was happy with my decisions. She's a bit crusty and needs some love. Quote Link to comment Share on other sites More sharing options...
B C Posted January 18, 2017 Report Share Posted January 18, 2017 Flashback to 5 years ago when I bought an S4.10 from you GunMetalGrey 1 Quote Link to comment Share on other sites More sharing options...
suspenceful Posted January 18, 2017 Report Share Posted January 18, 2017 Noob question. What's the advantage of a small case compared to a medium case? Quote Link to comment Share on other sites More sharing options...
GunMetalGrey Posted January 18, 2017 Author Report Share Posted January 18, 2017 28 minutes ago, suspenceful said: Noob question. What's the advantage of a small case compared to a medium case? In this scenario the only disadvantage to a medium case is the weight, which is around 20lbs. In terms of strength, the medium case can handle much more torque. So it's really not a big deal. Quote Link to comment Share on other sites More sharing options...
GunMetalGrey Posted January 19, 2017 Author Report Share Posted January 19, 2017 I set fire to many bushings last night. Got the old RTAB's out, as well as the old subframe bushings. I also cleaned up the diff a bit and put new fluid in it. The old diff was messed up and makes plenty of weird/bad noises when you spin just one output cup. If I get bushings today I am hoping to have the car back on its own feet this weekend! B C 1 Quote Link to comment Share on other sites More sharing options...
GunMetalGrey Posted January 23, 2017 Author Report Share Posted January 23, 2017 Weeee! I got some snow tires! This excites me. I also got the car back on the ground! Next step is to take the lower pan off the motor and check the upper pan bolts as well as replace the lower pan (PO stripped the drain plug and failed to use a gasket when installing the lower pan) Quote Link to comment Share on other sites More sharing options...
GunMetalGrey Posted January 24, 2017 Author Report Share Posted January 24, 2017 Took this out last night to feel how the new rear end felt, and all feels good! I fixed the PO's terrible exhaust work as well, so now the exhaust actually exits from the muffler! Sadly I found that what I had thought was diff whine before is in fact a wheel bearing that is close to giving up on life. I also have hot start issues, and am going to try replacing the FPR as most people claim that's what is common on these. I want to start daily driving it, but I don't trust it yet. Quote Link to comment Share on other sites More sharing options...
Earl Posted January 24, 2017 Report Share Posted January 24, 2017 Good thing e30/e36 wheel bearings are a cake walk=P Quote Link to comment Share on other sites More sharing options...
GunMetalGrey Posted January 24, 2017 Author Report Share Posted January 24, 2017 Just now, Earl said: Good thing e30/e36 wheel bearings are a cake walk=P Yeahhhh, about that. Though I have never used a proper tool set, and I believe Mr. Rice has one that I may be able to borrow. Quote Link to comment Share on other sites More sharing options...
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