M62tu engine work

[bmwmech1]

... WTF were they thinking when they pulled that big U shaped guide out of their ass...

Job security for their dealerships/technicians. If you build it to fail, it will... just look at how many crucial engine parts are made from plastic nowadays. You can't tell me that they engineer plastic thermostat housings to last 200k miles...

I'm with you... it's crazy the stuff that I see on a daily basis.

Lookin' good Jean...

Garey

[Jean]

Got all new shifter hardware installed, along with a new short shifter. Radiator/hoses/belts done.





PS return line is on order, along with 6speed input shaft seal (while you are in there type of thing).

Next weekend plan is to install the tranny with new fluid, install the rebult injectors (just got an email back that they are done), connect the driveshaft, install the exhaust and remove the rear silencer.

Sunday to wire the whole thing up and add oil/coolant/ps/brake fluids.

I need to remember to weight the 6speed and starter as well these go in the car.....

[Jean]

Transmission input seal and power steering line here. Injectors in route.

Hopefully won't be any surprises or any complications this weekend.

[Jean]

Alright, the 6speed tranny w/o oil is 110lbs. Starter isn't very heavy at all, maybe 10lbs.



Tranny installed and filled with redline mtl. New slave cylinder installed.
CDV removed.
Short shifter and new shifter hardware done.
Exhaust installed, and one of the rear muffler/silencers cut-off.
New ps line installed.









Rebuilt injectors arrived.
Tomorrow is going to be add oil/coolant/and do a bunch of wiring day.

[Jean]

Everything, almost, went as planned.

Went over all the bolts to make sure nothing was left behind. Re-tightened a few.
Filled up the engine with Mobil1 Synthetic 5w30, tranny is filled up with Redline MTL, got two gallons of BMW coolant.
BMW brake/clutch fluid, and some DexIII ATF for power steering.

Removing one of the two rear mufflers didn't make difference in sound, should have just removed the whole rear section lol.

Removing the CDV did make a big difference, clutch is now very sensitive, where before it had this artifical 'lag'.

No oil leaks so far, no coolant leaks from the engine either. The radiator/hose needs a new o-ring that I'll pick up tomorrow as it's leaking from the top radiator neck where the quick release radiator hose connects. FFFFFFuuuu

Engine started up on the first try, i forgot to tighten one vacuum line going to the throttlebody/intake manifold past the MAF so it made the idle go up/down/up/down.

Tomorrow/tuesday I'll get the o-ring on there and also get the car scanned for any codes and make sure all is okay. I think one of the lifters is loud, but haven't even really driven the car yet...

[Jean]

Does this sound like a lifter that hasn't yet fully gotten oil yet or something else?

Machine/engine shop took lifters apart to clean/rebuild when they worked on the heads, but this is my first rebuild m62 rebuld so I am new to this sound.



here is one from under the hood, but it's not as obvious here

[The Dark Side of Will]

Job security for their dealerships/technicians. If you build it to fail, it will... just look at how many crucial engine parts are made from plastic nowadays. You can't tell me that they engineer plastic thermostat housings to last 200k miles...

I'm with you... it's crazy the stuff that I see on a daily basis.

Lookin' good Jean...

Garey

The U-shaped guide *does* look kinda strange... I think I would have put an idler sprocket in that location and used it to drive the waterpump.

The Cadillac Northstar uses plastic chain guides backed up by aluminum castings, very similar to what's shown here. When the chain links are sliding across them, they wear. When the links wear deep enough grooves in them that the chain rollers start to touch the guides, they stop wearing and are good forever.

I've had a few Northstars apart and never had a guide break. I can't speak for M60's because I've never had any of them apart, but it sounds like this engine had some cracked guides. Not sure if BMW cheaped out on the material or what...

Here's the Northstar timing drive:



The guides are the green components.
All the chains are single row. I would feel more comfortable if they were dual row, or at least if the primary chain from the crank to the intermediate sprocket were dual row, but I've also never heard of a chain failure. This design is also very compact, which is what lets it fit transversely in a Fiero.

[Jean]

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

[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.

[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......

[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]

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

[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]

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

[The Dark Side of Will]

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