M62tu engine work

[bmwmech1]

wow, 110lbs for the 6spd? no surprise why it took two of us to carry that awkward thing!

Yeah, they're pigs... more like the size of a truck transmission. I have to pull my second one in 6 days tomorrow. Another clutch job, this one in an 06 650i... last week was an 01 540i... yay!

Garey

[mkcman17]

wow, 110lbs for the 6spd? no surprise why it took two of us to carry that awkward thing!

[Jean]

Maybe 5 to 10(tops) minutes total time spread over the couple starts. Yeah the injector noise I am expecting, no problem with that, the lower freq. as you described is what I am worried about. Tomorrow I'll listen again and double-check the exhaust, I did have the car up on the lift and this noise seems to be louder from under the car, the same freq and loudness on both sides (passenger and drivers) and almost sounded like it's inside the manifolds/cats. I am thinking, maybe it's the lifters on the Exhaust side that I am hearing through the manifolds or something. I did listen around the manifolds but didn't see anything obvious, I've seen/heard exhaust leaks before but did not recognize anything like it here.

I'll take it for a drive tomorrow after replacing the upper radiator hose and hope for the better.

[bmwmech1]

Jean, roughly how long has the motor been run, now that it's back together? It sounds like a sticky lifter. The higher frequency noises are the injectors, obviously, but the lower frequency sound has a metal-esque ring to it, like a lifter. It could take a while for it to come around, I've had them rap like that for 15-20 minutes before they started to quiet down and longer to completely disappear. Obviously, it's hard to discern on a video. The stethoscope will help to pinpoint the location a lot better. The other thing to try is getting it up in the air and listen from below too. If it's exhaust, it will be louder from underneath, a lifter and you won't hardly be able to hear it from down below. Plus you can feel around the exhaust joints for leaks, to eliminate that as a possibility. Also, if it seems to get quieter each subsequent cycle of starting and warmup, it is probably a lifter. Just hard to diagnose from a video...

Garey

[Jean]

Yeah I can get one... I'll be by the car tomorrow to replace the upper radiator hose and will then listen again.

[moatilliatta]

Do you have a stethoscope?

[Jean]

Anybody else with experience, I can hear two different noises in the two videos. the one with the hood sounds normal... the other video is where I am hearing the loud more distinct sound. Is the frequency of it matching with how often the lifter opens/closes?

[The Dark Side of Will]

For the water cooled alternator ...99+ are like that.

Dam, you're quick.

[The Dark Side of Will]

Looks like you had something tucked into it here... is that the housing for the water cooled alternator?

[Jean]

For the water cooled alternator ...99+ are like that.

[The Dark Side of Will]

Sounds like a bad thing...

Next weekend I'll install both oil pans, and timing covers/valve covers and weight it before adding accessories.

OBTW, what is this huge wart cast into the side of the front cover?

[Jean]

Guides, then chain coming off and/or slipping...boom.

[The Dark Side of Will]

It's a known/common issue with these bmw v8s. The older M60 is dual row with sprocket.

Water pump is driven by a belt, you would re-design the whole front timing cover? LOL

If I had been designing the engine in the first place, I would have used an idler instead of the giant boomerang chain guide.

And what is the known/common issue? Guides disintegrating or chains failing?

[Jean]

Intake manifold has all new gaskets, same with rebuilt injectors. New exhaust manifold gaskets as well... It seems like that noise is coming from the manifolds though in the wheel area......

[moatilliatta]

Where is that sound comming from? Could be a leaky manifold? I just got a set of injectors for my v8. I got the bosch design III injectors used on later mustangs. Ive heard 2-3 mpg increase and smoother power band.