M60: ignition timing question? Help!

[Antrieb]

Is the crank timing gear (that is keyed to the crankshaft and has to do with ignition timing), known for possibly breaking the key and being completely off?

My ignition timing is retarded by 50 degrees and we're trying to figure out why.

[632 Regal]

never heard of this on a v8, but I assume it is possible.


Is the crank timing gear (that is keyed to the crankshaft and has to do with ignition timing), known for possibly breaking the key and being completely off?

My ignition timing is retarded by 50 degrees and we're trying to figure out why.

[Ferret]

Ouch!!!

No wonder the bugger wouldnt start.

[Antrieb]

So does anyone know how to fix the ignition timing?

[92E34]

I think that you may have pushed the little woodruff key back into the crank. and you have your crank pulley on incorrectly (thats saying if the crank pully sensor gear is the same or close to an M50).

[Antrieb]

Hmm, I wonder how we managed to do that? How do I fix this?

[632 Regal]

did you pull the harmonic balancer during this project?

[92E34]

I think that you may have pushed the little woodruff key back into the crank. and you have your crank pulley on incorrectly (thats saying if the crank pully sensor gear is the same or close to an M50).

You'd have take off the serpentine belts, and pulleys on the crank. Then look for the pin that is sticking out.

http://www.realoem.com/bmw/showparts.do?model=HE23&mospid=47406&btnr=11_1233&hg=11&fg=18

Its number 3

[632 Regal]

LOL everything about this dudes car is so vague the pros are afraid to even comment on it. Did he even take this apart? I am convinced at 2 things, the head gaskets dont blow and 2' if in doubt replace the whole engine.

[Vanguard]

I don't understand what your asking. As I stated earlier I'm new to BMWs, but familiar with other cars. First let's talk about the mechanical portion. We got the crankshaft and the cams. Physically linked together in the right positions using marks on the crankshaft and the cams. If you got all four cams and the crankshafts aligned in the right positions then intake and exhaust valves are doing their dance properly.

Fuel and ignition are handled in the M60 by the computers. Assuming the cams and crank are in proper alignment, if the plugs aren't firing at the proper time, then you've got an electrical problem - wiring, sensors or computer. I suppose you could have bad coils or plugs as well, but I think you've covered that.

[Dave M]

LOL everything about this dudes car is so vague the pros are afraid to even comment on it. Did he even take this apart? I am convinced at 2 things, the head gaskets dont blow and 2' if in doubt replace the whole engine.

Jeff's right. I'm no pro, but i am wondering where we're going (and coming) with this one. I was about to post earlier, but I decided i was too confused ;)

Its not rocket science. $hit, its barely a macaroni sculpture. If the M60 has an 'OT' mark on the balancer, the key isn't broken, and the marks line up at TDC, you're issue is in the top end. Maybe that intake cam on the pass. side I was talking about in an old post. 50 degrees, I think not, but something is up.

How/who determined this 50 degrees? I'd like to see this one through as we've had three separate posts on it already. Give us more info rather than asking how to fix ignition timing.

Talk to you soon??

Dave M

[Antrieb]

omg...

[Dave M]

omg...

omg.....what happened?

So, is the bottom end really at TDC? Did you investigate the 'woodruff' key?

Dave M

[92E34]

Wasn't it over on Bimmerforums where the info on the overhaul are located? I kinda remember something where it wasn't in time before.

[Atl530i]

Wasn't it over on Bimmerforums where the info on the overhaul are located? I kinda remember something where it wasn't in time before.

There is a more detailed thread on Bimmerforums. He has been trying to figure this out for over a month now it seems.

[Antrieb]

http://www.youtube.com/watch?v=NRLwo3Z8ecs

[Atl530i]

That video is not available :(

[92E34]

I've got a few repair manuals for the E34 chassis. I've got one in german that I think could help you. All you need is someone that spricht Deutsch.

[Fetch]

squeeeeeeeeel

:D

[Antrieb]

Weird, it works for everyone else? Try again!

[Antrieb]

Yep, we broke the waterpump pulley today and killed the belt too. I just bought replacements :)

[92E34]

Sounds like a mustang with glasspacks!

[Atl530i]

It is about time :)

[632 Regal]

so what was the problem?

[Antrieb]

The driver side head was off 180 degrees

[Vanguard]

Excellent! Glad you got her running!

[Dave M]

Phew,

Bet that feels good.

[Ferret]

Owies, I'm surprised you've not got valve damage from that, you're real lucky.

[Dave M]

Owies, I'm surprised you've not got valve damage from that, you're real lucky.

If you're gonna be off, you want to be off 180 degrees ;)

[Antrieb]

Yeah we didn't even notice, because there was numbers stamped on the bottom of the camshaft too, just not BMW stamped there. Thats how I figured it out :P