Pulley alignment issue?

[iansane]

I just bought an '84 325e car for pretty cheap. Body is straight with just a little bit of clear flaking. I will preface this by saying this is my first e30 and also my first import. I've always had domestic v8s up until now. Anyways, I was going to test drive the car and had the guy fire it off while I kept my face in the engine bay. As soon as he clicked it off I hear this horrendous clackity clack clack noise from the accessories. I told him to kill it and inspected the pulleys. The crankshaft pulley/harmonic balancer piece had separated in two. The pulley portion was flopping around while the bolted portion was stuck to the motor.

I picked up another crank pulley from an acquaintance that happened to be a later motor with the reluctor wheel. Figured it wasn't a huge deal and tried bolting it on. Everything was fine until I went to bolt the h2o pump pulley on and that hit the crank reluctor. Crap. I then did a little research on here and found the later water pump pulleys differed. Keith M on here priority mailed me one immediately (fricken awesome dude) and I just tried bolting it on this morning and found it's even larger than the one I have and interferes even more.

Now that I inspect everything a bit more it looks like the crank is farther out than every other pulley by a good margin causing it to hit. The previous owner said he/someone did some work to it like replace radiator and alternator so I don't know that everything was put back together correctly. Are there spacers I should I have?

This is what I'm dealing with;
Edit: Note; These pictures are taken with the crank pulleys set in place but not bolted down. I made sure to "seat" the pulley as much as possible and line up the nub/key thing. As you go down and the interference gets progressively worse the h2o pulley isn't bolted down, just set in place because it won't even sit against the h2o pump flange.


Original crank pulley/original h2o pulley.


Late model crank pulley/original h2o pulley


Late model crank pulley/late model h2o pulley

Does the crank flange get pulled in at all? It looks like it's right up against the tbelt? Any help would be awesome!

[iansane]

No one? Crap.

[Keith M]

Something isn't right here. Sorry about the pulley, its off a 25b motor and I didn't think about it being the wrong size.

[iansane]

Oh no worries, I was hoping it'd be the later style for diameter match to the crank pulley.

Parts stores show differing h2o pumps between '84 and '88 (I think this was the year the crank pulley came off of...). I may go in to see if I can handle both and see if there is a depth change between the two.

Again, Keith, I really appreciate sending out the pulley so quickly.

[36brua]

not much help here. but stock the clearance between the WP pulley and dampener is very close. (3rd photo) while not ideal possibly shim between the WP flange and back of pulley ? thin washer may need to trim OD of washer to make sure it sits flat on back side of pulley inside radius. you may need to pick up new bolts a couple mm longer to maintain full thread engagement in WP flange.snug up bolts and rotate by hand both the WP and crank. The dampener can have some run out as well. GL

[Eecen]

I'm guessing you have some weird combination of b25 & b27 parts, obviously.

bmwfans shows the WP pulley being different between the b25 and b27 also.
325e
325i

editl you already figred this out.

Soo, if I were you I'd figure out whether I have an early(b27) or later(b25) WP and match parts accordingly.

Do you have the harmonic balancer beaten on w/ a mallet, or just pushed on by hand? It should "suck in" a little bit after some persuasion

[iansane]

Soo, if I were you I'd figure out whether I have an early(b27) or later(b25) WP and match parts accordingly.

Do you have the harmonic balancer beaten on w/ a mallet, or just pushed on by hand? It should "suck in" a little bit after some persuasion

As far as I know I have an early (I guess b27? Does that mean 2.7 litre e motor? I don't have this nomenclature down yet.) motor. It was not beaten on with a mallet, however I torqued down the six 13mm head bolts to make sure it was seated as much as I could before throwing on the h2o pump pulley.

I work tomorrow until 1pm or so and then I'll have some more time to tear into this and see what's up. Most times that things like this happen it's something incredibly dumb that holds me up so I'm hoping I'm missing something that I'll see tomorrow.

I've been google image searching to see if I could find a factory E motor acc system and see the tolerances but I'm not finding anything. Can anyone post one up of their motor so I can see if I'm just splitting hairs?

[iansane]

Well I couldn't check out the different pumps today because my work didn't have either. Although, I ordered both in so that I can handle them and see their differences. I'm 99% sure the snout/pulley flange is just at a different depth. I had a friend with same year/same car send me some pictures of his pulley setup and it's ultra close. Something I'm not used to and freaked out a bit more than I should have. I took the pulley I got some Keith and made a spacer plate to go behind it and it seems to be perfectly lined up. I'll know for sure in a few minutes when I go get a new belt and fire it off.

Bottom line I need to get the correct crank pulley. This spacer plate is just a bandaid fix to beat on the car a bit and make sure I'm actually going to keep it.

[36brua]

[quote=iansane;2802587]Well I couldn't check out the different pumps today because my work didn't have either. Although, I ordered both in so that I can handle them and see their differences. I'm 99% sure the snout/pulley flange is just at a different depth. I had a friend with same year/same car send me some pictures of his pulley setup and it's ultra close. Something I'm not used to and freaked out a bit more than I should have. I took the pulley I got some Keith and made a spacer plate to go behind it and it seems to be perfectly lined up. I'll know for sure in a few minutes when I go get a new belt and fire it off.

Bottom line I need to get the correct crank pulley. This spacer plate is just a bandaid fix to beat on the car a bit and make sure I'm actually going to keep it.[/quote]

I've used bandaids all my life.. some for quite a while ! now go beat it, you know you'll keep it. but as you said the pulley faces run very close Pls post up your results w/ parts combo you end up with Thnx GL:)