E30 Street/TimeAttack (+ E36 V8 Turbo Touring)

[Miuge]

AnthonyB:
One thing I wasn't thinking about earlier is that my engine is located "underneath the windshield" and the height of the coil pack with vertical mounting is around 95mm, my engine is tilted +10deg more upright.. Not too much space available there neither Need to measure..

George:
Volume of the plenum (as well as runner length and diameter) is always a compromise, unless it's some kind of a complicated variable type. Smaller volume gives a better response, but bigger will allow the best peak power.
About the upper limit, I think you can't make "too big" and lose peak performance, but you'll sure notice more lag and weakened throttle response.

I wish free valve system would become more common in near future.. Hmm, a free valve M30 ;D Check out Koenigsegg talking about their system on Youtube.

[squidmaster]

Space and weight affect that "maximum" I imagine. I mean, unless someone wants to install a fuel-cell style tank of oil in their trunk?

[george graves]

Space was limited but the volume will be near 9 liters when finished. I think there's no ultimate formula for calculating ideal volume, but 2-3 times the engine displacement should do when seeking at maximum power.

Interesting. I assume there is minimum(just for the sake of flow) - but I wonder if there is an practical upper limit that you begin to loose performance.

[Anthony B]

Anthony:

Another revision utilizing M30 valve cover AFM and harness mountings:

Can't wait to see this fab'd up, I'll be interested to see how they sit on the valve cover. I've been looking at similar firewall mounted ones

[litu]

sub

[Miuge]

Anthony:

Another revision utilizing M30 valve cover AFM and harness mountings:

[squidmaster]

I knowww! But there's always a chance it wont get everything, just one more thing to worry about! Haha

[Miuge]

The mock up for the coil packs, would you consider putting it into production or looking as a more one off part?

From the look of the rendering mounted to the valve cover correct? Are you utilising the afm mounts on the cover?

Sure if you need one, I'll just measure valve cover AFM mounts and make a sketch. In fact I was thinking to tilt coil mounts from horizontal to vertical which might simplify things.. :)

squidmaster: It's easy to put parts in the washing machine and they'll be clean and shiny again ;D

[squidmaster]

can't wait until this is finished!

idk might just be me but I wouldn't have drilled/shaved/cut anything on the runners with my head right there, now there are shavings all inside it! haha

[Anthony B]

The mock up for the coil packs, would you consider putting it into production or looking as a more one off part?

From the look of the rendering mounted to the valve cover correct? Are you utilising the afm mounts on the cover?

[Miuge]

Here's more comprehensive update of what's done and what not:

S369 turbo seems to fill up the space effectively, in fact my earlier S467 was equipped with a rare small comp cover which is smaller in diameter...


I got my injectors and made couple of weld bungs which turned out too short after drilling the holes




Pile of ignition coils:


I was thinking to order a laser cutted rack for coils, so I made a "coarse" 3D mockup one evening:


Primarily I focused on drivetrain, gearbox adapter plate needed a few holes, apparently I had cutted my cardboard mockup along the wrong line and there was not enough material for one hole, but it was easily fixed with a welder:


Before I was able to make a cross member I hung gearbox from the inside, also I've forgot to take pictures of the cross member and mounts in the chassis:


The gear shifter episode:
Got to start from somewhere, this is what felt a good location:


And how it turned out:

[Miuge]

Ok I've forgot to post few updates, but here's one video clip :)

[Miuge]

I ordered the turbine housing with typical BW marmon flange as it was the cheapest option, I was quite sure I can turn it into a 3.5in V-band:


Like this:


Gearbox adapter flange is now ready with threads and holes, I'll try to find some time to mount gearbox rear end into the chassis this weekend.

For the engine I found EV14 injectors which will allow me to finish the intake manifold (fabricating injector weld bungs, fuel rail and it's mounts). Injectors will be fed by two 380lph fuel pumps.

IGN-1A coils will ignite the mixture hopefully

[Miuge]

Thanks!

Yess it's S369 SX-E, proven to be good for 900whp :giggle:

Today I visited at the garage measuring and listing the bits needed to mount the new parts.
First note; my centering tool was slightly too big to fit crank bearing slot, need to machine max. tenth of a millimeter off:


Adapter plate test fit:


Found a pic how the intake manifold matches the port:


And as you can see in the earlier pictures cylinder head was full of dirt, dust and metal chips so I gave it a little wash:

[AWDBOB]

OH BOY S300sx?!?!