Another lesson in frugality incoming: We picked up an early E36 M42 engine for $250 down in Indy for purposes unknown to use at the time. It was fortuitous however because we ended up using its cylinder head after the dreaded faulty profile gasket fault made itself apparent during a July 2018 autocross. We turned in our bad cylinder head as a core-return at local junkyard where we found a good replacement and now we have a fully unfunctional E36 M42 again to make an example of for you fine fuc…folks.
Step 1: A.B.C. – Always Be Craigslisting – ALWAYS BE CRAIGSLISTING
Engine stands are cheap. Even brand new. We overpaid for our Harbor Freight brand “Central Machinery” stand. Rated at 750 lbs, it’s over-qualified, but for $40 on Craigslist, isn’t as great of a deal as we’d like considering we could get one for under $50 with a coupon and we’d have a warranty.
Step 2: Engine Stands – Assemble
The stand is essentially made up of two parts. The mounting bracket that sits in the head tube, and the stand itself. The stand is made of three parts. The two rectangular sections have the caster wheels and the other houses the mounting bracket. In our example, the two rectangular sections are already bolted together with the included hardware we received. If you’ve misplaced yours or never received any, they’re easy to replace (check your leftover nuts-and-bolts bag or buy new ones) and don’t require a specific thread because they’re slipped through simple through-holes.
After those are bolted together you can bolt the mounting bracket section to the wheels. Ours has a nut welded inside the bottom of the tubing to tie it to the wheels. Put the longer bolt through the wheels section and into the bottom of the mounting bracket section. Now you have a completed stand. If you have this stand in particular and you don’t have that bolt, it’s an M12x1.75 and approximately 100mm with a locking washer.
Step 3: Stick it to Me – The Mounting Bracket
The mounting bracket simple slips through the head tube on the mounting bracket section of the stand. Each of the four arms is adjustable. Again, if you don’t have any included hardware, hit up the nuts-and-bolts bag. These M12x1.75s might not be found as easily in your leftovers, so measure the lengths you’ll need and hit the hardware store. With ours we needed four shorter ones (about 3″), four longer ones (about 5″), and four nuts with washers.
With the block on a stable surface and all of the arms loose, mock-up your bracket thusly; bolt the bracket to the block hand-tight and then get the other side with the tube as square to the block as possible so that they are evenly horizontal to each other. Hand tighten those bolts and nuts. After that, tighten the bracket to the block fukentight and then tighten the tube section gutentight.
Put a towel down and grease up the head inside of the head tube. In your best parody of German porn, grab a friend or six and lift the block with the mounting bracket attached, and gently slide the whole thing into the head tube of the stand. Celebrate the event by sliding the swing lever and locking pin into their appropriate holes at the end of the tube. You’ll use those to lock the block in place and swing it around on its axis when necessary.
Word of advice whenever you do so, use two hands! A fully loaded engine is going to be very top or bottom heavy and will leave you in the dust when you try to rotate it. One of these we’ll get around to rebuilding our M42 and hopefully provide you with more scintillating and Pulitzer Prize worthy innuendo.