A while back Helmut was sporting a stock m10 with the turbo big enough to disintegrate that poor motor. After two years of trashing this setup my turbo manifold decided to crack every weld and reject the turbo flange.
Helmut by w grync,
Helmut by w grync, on Flickr
Helmut by w grync,
I decided to get rid of the m10 and switch to more modern unit. I acquired the early m42 with the plan to boost it. Stock 1.8 is nice if you like it to spool at 5k rpm.
Since I got family in Poland, and Poland is Europe's junkyard, there are plenty of e36,e34 and e39 m47 diesels sold for parts. I found two diesel cranks and have them shipped to the States.
With M47 crank and enough bore I will have close to 2.1L. It should spool nicely especially with some efr (if budget allows)
M47 diesel crank by w grync,
To use it in m42 the crank nose has to be turned to match the m42 chain sprocket ID. Also additional keyway needs to be cut. M47s use same bearings as m42/m52s. I plan to use the 360 thrust bearing. Question: What is your opinion on the 360 degree oiling grooves for high (er) rev applications (8-8.5k rpm)?
M47 diesel crank by w grync,
With power goals that I got in my mind the whole stock drivetrain was not up to the task.
I had the e28 subframe modded to fit e21 from my previous project. I had to decide what to do with the front end.
There were two options: e21 front with e12 hubs to make it 5x120 or the more entertaining way using the whole e36 front end.
Front Subframe
I roughly chopped 3" of the middle of the front e36 subframe and welded it back together. I had to modify frme rails in order to bolt the new subframe in.
Stock vs e36
E36 modified subframe by w grync
cut
E36 modified subframe by w grync,
Jig
E36 modified subframe by w grync,
weld the crap out of it
E36 modified subframe by w grync,
Frame rails
I used panzer angles and tube to make it bombproof. I guess anything over 1/8" is overkill but oh well.
Untitled by w grync,
Untitled by w grync,
Front suspension by w grync,
Control arm Mounts
I decided to use the wider e46 arms to match the increased rear track width. SLR adjustable lollipops were used to center the wheel.
Front suspension by w grync,
E46 arms and lollipop mount by w grync,
Front suspension by w grync,
I set the arms parallel to the subframe for the neutral anti-dive. I can always add some spacers under lollipop mounts to increase anti-dive
Control arm angles by w grync,
Trailing Arms
The rear end is as problematic as the front. to fit wider wheels i needed to move shock pickup points almost 2" in. Shock mounts are from https://www.aa-mfg.com/
Trilingarm by w grync,
Rear suspension by w grync,
Brakes:
Stock e46 330i up front and e32 rears.
Suspension:
Koni race single adjustables. Front and rear e28 swaybars. Not sure about the spring rates.
I modded the front e36 strut housings. I chopped the tops and welded volvo 740 threaded top portion of the strut tube.
Strut tubes e36 by w grync,
Strut tubes e36 by w grync,
Progress might be slow but I hope to build the motor over the summer and maybe even have it on the road this year.
pe that it will