'89 318i 6 speed m50b32tu turbo swap build

[ba114]

Slow progress is still progress right?
Rear brakes arrived...in need of a clean.


New vs Old wheels:


Bird poo welds getting cleaned up on modified downpipe:

[ba114]

And today just paid for. An IE. 310mm rear wilwood brake kit to match the fronts....

[ba114]

Was getting some issues with starting and a persistent DTC 83 (crankshaft sensor) error. The wiring on the ms43 sensor patch harness was good/new, however i'd leveraged the original harness for connecting to the sensor.
No pics, but the cable was not in great shape.

Decided to just run the e36 MS41.0 EURO obd2 front mounted crank sensor. In the e36 this is fed 5v from the DME, however i was informed that it would also accept 12v feed. So i wired up an adapter harness so i could wire it into the ms43 harness. Started first go! no more errors and a VERY strong start.

I also ordered some 17" wheels. More copies - Lenso BSX in 17x17.5 ET20 for the front and 17x8.5 ET15 for the rear. These are almost the same as what i'm running now (16" ESM-002r) but i got them for a really good price. Now to get some rubber!

[Northern]

I like these developments, first start on that engine combo with MS43 is a huge milestone, and shiny new parts are always great to look at

[ba114]

Box of goodies arrived today:


Bought the IE 310mm front bbk but swapped out the supplied calipers (1.62,1.12,1.12) with 1.38, 1.0, 1.0 piston calipers instead.
This paired with the z3 36mm piston calipers and e36 325i 280mm rotors in the rear results in a 68% forward bias when used with the e9x 25/22 master cylinder. Its a bit more forward than i would have liked however overall not too bad. I could always remove the bias valve later and see how that feels.

[ba114]

8 August 2021 - First start:

[ba114]

Fitted a HVAC panel from a LHD e30 so the radio would be moved to the left side. It needed a few mods, doesn't fit perfectly, but pretty close.


This was done to provide more visibility, and enable the fold out screen to NOT hit the indicator stalk. Why do i want more visibility? for the JB4 mobile app of course


Those of you with a keen eye will notice the 2nd image has a different headunit. I had to return the first one because of a horrendously loud white noise issue that was persistent unless you muted the sound.

[ba114]

Water feed for turbo


Hardline for turbo oil return


Radiator mounted, pipework attached

[ba114]

Got a new mig and decided it was to put it to good use. Fabricated a new gearbox crossmember for the gs6-53bz. Still running the e28 mounts with aluminium cups. Also made a tool for locking the crank so I could tighten the crank bolt. It looks ugly, but theres good penetration and the splatter is actually clear coat I sprayed while still hot.

[Northern]

Have you factored in the pressure drop in the rear lines from the bias valve?

Some info here but a bit muddy to sort through

http://spece30.com/t/brake-bias/7736

I am going to do this at some point soon and I think I would try to spec everything to eliminate the stock bias valve, or use an aftermarket one if necessary to hit whatever bias range.

[ba114]

Been thinking about brakes more and more lately as i now have the 25/22 e90 master instead of the 22.2/17.46mm stock master, and decided its time to invest in a bbk.
I've been looking at the IE 310mm wilwood bbk kit. Seems like a good package that will fit my 16" esm002r.

Unfortunately there are two issues:

1. The calipers supplied are the 120-13434 and 120-13434 which has the 1.62, 1.12, 1.12 pistons in it; 4.04" piston area when paired with the 310mm front rotor, and running stock rear brakes setup, the front bias would be a huge 78% which is not acceptable. To fix this needs more fixes:
   • Replace the calipers with 120-13438 and 120-13439 which have 1.38, 1.0, 1.0 pistons; 3.08" piston areas.
   • Replace rear brakes with 36mm bore Z3 calipers which are direct bolt on to e30.
   • Re-drill 10mm e36 325i 280mm rotors to 4x100mm and have a ring machined to centre on the hub, or i engage a rotor manufacture for a custom spec item (im exploring this further right now).
   • These changes combined will bring the bias back to 67/33
2. Shipping from USA to Australia is ridiculously expensive. IE will sell me the kit minus rotors to try save on shipping costs...but we'll see what the quote comes in at.

The other issue i'm not clear on, is my stock master DEFINITELY is stamped 22/17. All my research suggests that the original F/R bias is around 63/37 yet my calculations are returning 57.5/42.5:

https://www.tceperformanceproducts.com/dual-bias-calc/

Can anyone explain why this is and should i be concerned by the fairly significant difference? If so, i can switch to a e46 325i caliper which would make it 62/38.

[Northern]

Looks good, keep it up!

[ba114]

Been tinkering with the 3D printer in the evenings and modelled a centre air vent to make a housing for a palm phone. It will also house a wireless charger to keep the phone charged. The phone will be connected to my jb4 for gauges, logging and map switching. Sent from my SM-G973F using Tapatalk

[ba114]

Needed to tidy up the shock towers. Years of abuse saw lots of damaged paint so was time to give it a fresh coat....yes I should have done this before putting the new engine in... Anyway, it's done now, looks OK. Fitted the turbo to wrap up for the night. Sent from my SM-G973F using Tapatalk

[ba114]

Fitted up the e90 booster and master. Used a T-piece for splitting the front brakes and the grabbed a brake line from an e60 that has the correct m12x1 fitting on one end of the line and m10x1 on the other end. It's 190mm long and the perfect length for what I wanted to do. I also got a reservoir for the e60 as well which fits up and allows you to put the push rod through the master and reservoir to secure it.