'89 318i 6 speed m50b32tu turbo swap build

[potatomash]

Yew! Thats mint

[ba114]

New dyno results.
Still have some work to do up top in the fueling, but the results speak for themselves :)

Think im out of fuel now too with my 340lph pump. Have ordered a walbro 450 to replace it.

[ba114]

Fixed some exhaust leaks. Had lost two nuts off the manifold flange and the rest had loosed enough to cause some leaks.

The turbo flange had also loosened enough to blow out the crappy gasket that came with the manifold so replaced that with a steel one and all is well again.

Also had a dyno day last friday to see how its running. I'd managed to implement boost control using the evap purge output and a MAC valve thanks to some help from mrf582 at romraider and it worked flawlessly holding boost perfectly!

End result was 309kw (415hp) on a mainline dyno. We dont have dynojet over here in Australia however it appears that mainline is upto 20% lower than dynojet which *could* mean if i tested in the US, i would be around 500hp.
Unfortunately i didnt get external video of the power run, only the first complete run however it was still wheelspinning on the dyno. To get the final run in they had to sit a person in the back seat and two people in the boot.

Dyno Video

Unfortunately i also maxed the DME load limits once again which resulted in a pretty lean condition at the end of the run. Obviously i could never get to that limit on the road so never expected i'd hit it again.
I was very pleased that my open loop fueling was pretty much where i wanted it to be (around 11:1) throughout the run prior to this though.
I've already halved all the load values in the DME once before. Have halved them again now so that issue is addressed.

[pandaboo911]

Damn that's expensive lol, I'll run the plastic one until it melts. Thx for the info

[ba114]

Beauty cover is for an m54, got it from ebay for AU$189. Fits well, a little warped but straightens out when bolted down. Standard cheap Chinese product but will do the job.

Oil is routed from the vanos bolt, it's just a really long feed line

[pandaboo911]

Looks sweet, I like that carbon fiber beauty cover, I have a feeling my plastic one is gonna melt as well because I have the same downpipe routing with a larger turbo. Where'd you get that thing and how does it fit?

Run a quart of ATF through your engine for 15 minutes at idle next oil change before you drain the oil. Lifter tick be damned!
Also overfill oil 1/2 quart past the full line helps get rid of it. I had horrible lifter tick during track days after pulling off the track. Sounded like a diesel running 0w40, switched to 15w50 and it's mostly gone, only comes up after running the engine at 5000+ rpm for extended periods

Also where are you running your oil feed from? Noticed the hose goes to the rear of the engine?

[ba114]

Was experiencing a new ticking/flutter noise from the engine that had me concerned maybe i'd caused some damage when i was overboosting. Didn't have much luck on the weekend finding the source of the ticking noise. After a drive i couldn't actually notice it, however it was back again the next time i started it so it may infact just be lifter tick.

Did some other work on the weekend including wiring in my MAC solenoid to the TEV (charcoal canister purge) wiring for use as boost control.
Also fabricated a heat shield for the downpipe which will hopefully further prevent chances of melting anything else in future.

[ba114]

Night time clip from the other day, before changing springs

https://youtu.be/wuqKygHJ-bs

[ba114]

Replaced the springs in the wastegate with a large black and small red which should wield just over 10psi.

hooked up the bottom port to the air compressor so that i could install it easier with the fire ring and mounted it up.

Went for a drive and the result was just over 11psi. Pretty much right where i want it for spring pressure only.

[ba114]

Had a little fire due to the beauty cover melting and dripping onto the downpipe. Melted the coil harness under it too.

No major damage. Was likely caused due to high EGTs from running too low timing by accident.

Anyway bought a new coil harness and a carbon fiber beauty cover that won't melt. Put some gold tape over it to hopefully lower the temps under the cover too.

Now I can get back to tuning!

[Brian697]

Nice build, appreciate the documentation!

[ba114]

Am I the only one who hates those bright as fuck LED interior lights?

Ain't no romance in that shit.

I actually don't particularly like the colour, but I'm focussed on getting light output and unfortunately they only seem to make 6000k. I'd rather something more like 4300k.

[pandaboo911]

'89 318i 6 speed m50b25tu turbo swap build

Am I the only one who hates those bright as fuck LED interior lights?

Ain't no romance in that shit.

[ba114]

Updated interior pic after fitting led interior bulbs.

Also hooked up my defi advance clone in the air vent. Only shows boost, rpm and speed in the video but have since wired in oil pressure, oil temp and fuel pressure.

https://youtu.be/xvF8CNxFQ3k

[Northern]

Looks great!