M42 Rebuild

[BimmerBum]

I picked up an M42 off a local Craig's List ad. It is missing the oil pan but otherwise very complete. The owner did not know much about it as he purchased it with the transmission and he only needed the oil pan and transmission. He claimed the guy he bought it from said it was running. For the price it was worth the gamble. Since it is a mystery it will need a full rebuild assuming it is not a total mess when I tear it down.

http://www.angelfire.com/de3/bimmertoyz/photo-65.JPG

No bearing chunks in the oil filter housing... good sign.

http://www.angelfire.com/de3/bimmertoyz/photo-66.JPG

No sludge. Cams look good as does the upper chain tensioner. The engine spins freely. I also pulled each of the plugs, they all looked dry and normal.

http://www.angelfire.com/de3/bimmertoyz/photo-68.JPG

Automatic flywheel removed and for sale!

http://www.angelfire.com/de3/bimmertoyz/photo-67.JPG

[BimmerBum]

The creatively repaired fan clutch made water pump removal more difficult than it needed to be. I shattered the water pump pulley to make it work.

http://www.angelfire.com/de3/bimmertoyz/photo-73.JPG

Goodbye plastic impeller.

http://www.angelfire.com/de3/bimmertoyz/photo-74.JPG

I removed all the accessories, threw away the junk and anything questionable. Now ready for the stand.

http://www.angelfire.com/de3/bimmertoyz/photo-71.JPG

http://www.angelfire.com/de3/bimmertoyz/photo-72.JPG

[teen ti]

I wish I this kind of skill and knowledge, good luck with everything, progress is looking good!

[teetime4one]

I hope that it turns out to be a healthy & happy motor.

[BimmerBum]

It will be interesting to see what it looks like when I open it up. Going to get back to Project Club Sport the rest of the week but I should have the head off next week.

[middlegati]

have fun with the build mang, what you plan on doing? since m42 builds can get pricey depending what you wanna do.

[BimmerBum]

My plan is to keep it a pretty stock rebuild. Maybe do a little match porting and balancing but I will know better once I open it up.

[BimmerBum]

Got it on a stand today and removed the exhaust manifold and intake side engine mount arm.

http://www.angelfire.com/de3/bimmertoyz/photo-75.JPG

Before I did that I loosened the crank pulley bolt.

[teetime4one]

Progress! Fingers are crossed that the inside is minty clean.

[BimmerBum]

Progress! Fingers are crossed that the inside is minty clean.

I would be happy with clean, minty would be suspicious I feel. ;)

[BimmerBum]

Made some more progress over the past few evenings...

Timing covers removed.

http://www.angelfire.com/de3/bimmertoyz/photo-90.JPG

Timing chain, gears, lower inner timing cover, rails and tensioner removed.

http://www.angelfire.com/de3/bimmertoyz/photo-89.JPG

Cylinder head removed. Very pleased to see clean, damage free cylinders.

http://www.angelfire.com/de3/bimmertoyz/photo-88.JPG

[Michael_M]

I wish I had the space to do all that.. I would've picked an I-6 and did all the maintenance myself :s

[btschafer]

Good luck! When you are done it will look like this: http://www.318ti.org/forum/garage_comments.php?do=view_img_comments&id=615

[BimmerBum]

Less paint but yep, something like that!

[mtlblue]

Saw a stroker bottom end fs not long ago around here.. you know, while you're at it ;-)

[BimmerBum]

I'm resisting... but I saw it too. I have an aluminum block single vanos 2.8 sitting here waiting for a home. I am more tempted to use than shell out for stroker parts on the M42.