Rebuilt M30

[Soundstorm]

This was a long running project that I finished in April. Hadn't shared these pictures yet for some reason, but there is no reason to keep them for myself. A friend of mine took them, so all credit goes to him (https://www.instagram.com/mayolonaise/).

The engine itself is a Frankenstein of 4 engines: '79 M90B35, '81 M30B28, '82 M30B34, '90 M30B30
Had quite some trouble with getting an aggressive camshaft to fit, Had to do loads of measurements to find the lift/duration range that could fit my piston type + deck hight +...
The M90 block had some water damage on #6, so I got an M30 block bored to the right specs of the M90.
Running a complete Motronic 1.3 on it (from an M20B20). Will be do tuning quite soon using an Ostrich, but still have an exhaust leak preventing me of using a wideband lamda sensor during tuning.

[Tiit]

Wow. Amazing work. Why 2,5/2,8 manifold? Is it better than b35 manifold? I like the wheels too.

[muleskinner]

museum quality

[Soundstorm]

Wow. Amazing work. Why 2,5/2,8 manifold? Is it better than b35 manifold? I like the wheels too.

It's a 3.5 intake manifold. I cut/weld the 2.5/2.8 purely for the optical illusion when going to the technical control

[TheGraye28]

That is dedication. I assume because of emissions laws in Belgium?

[Das_Prachtstrasse]

Looks fantastic. What's the spec on the cam and pistons?

[BenGerman]

Stunning detail work on the engine.
That thing is to pretty to be in the car!

[BRRV]

Reference quality.

[maybeillbuyit]

Amazing work. we need more pics and details, please

[nik77356]

Yes, more details please! What Crank, Rods, Pistons did you use? What are the Camshaft specs?

[ahab]

Beautiful work. Is she in and driving? I'm curious how the tuning went with 19lb injectors. I would have thought 24lb could have been more appropriate, depending on the cam and compression specs.

[dan101smith]

All the brackets, fuel rail etc - are they new, or have you had them re-finished?

[Soundstorm]

That is dedication. I assume because of emissions laws in Belgium?

No engine swaps allowed...

Yes, more details please! What Crank, Rods, Pistons did you use? What are the Camshaft specs?

Crank, rods and pistons are stock M90. So 93.4mm flat pistons, 84mm crank. I was already too far into the build when I acquired an 86mm crank, would have been cool to have thrown that in there.
Cam specs:
duration @ 0.1mm: 294°294
duration @ 1.0mm: 243°243
valve lift: 9.45mm9.45mm
valve lift @ TDC: 2.00mm 2.00mm

Beautiful work. Is she in and driving? I'm curious how the tuning went with 19lb injectors. I would have thought 24lb could have been more appropriate, depending on the cam and compression specs.

Yes, been driving for almost 3000km now. No tuning yet as I have an exhaust leak preventing a correct WB lambda measurement. But it's running ok in closed loop with the NB lambda. Haven't ran WOT yet
If I remember correctly, the fuel pressure regulator is 0.5bar higher than the one that was with the injectors.

We'll see how it goes.

All the brackets, fuel rail etc - are they new, or have you had them re-finished?

Everything has been sand blasted and painted/re-plated. Only a few buts/bolts are new.

[Soundstorm]

Amazing work. we need more pics and details, please

Added some more pictures here: https://imgur.com/a/qRGXr

[waynet1]

That's just down right sexy.

[tig]

I like your style. And your photos. Well done.

[spydaman]

Nice build

[Hffvdbl]

Nice work!

[Nebraska_e28]

Where did you source the adjustable cam gear & how was it notched with the timing grooves?