BMW E30 Street/TimeAttack (DTM style control arms)

2527

Avbryt

Skriv svar

-work in progress-

Miuge

228 Följare
129 970 Visningar
Uppdaterades senast 22 augusti 2018

Alla inlägg Ägarens inlägg

Miuge

29 september 2016 · 144 Inlägg

One busy month behind, but not with the car.. Some progress with cylinder head and intake manifold.

Along with some other laser cutting parts I finally ordered an adapter plate for the gearbox. I've machined a centering tool to align everything perfectly before marking the holes.

Earlier when starting to make the intake, I was talking about one minor compromise..
There was no enough room for the supercharger or atleast it would have been very difficult to mount it with all the piping etc, so I decided to get rid of it.

Now it's only this baby taking care of the boost production Custom 1.10A/R exhaust housing is on it's way.

BMW 320i "Street-TimeAttack" (1987)

Miuge

1 oktober 2016 · 144 Inlägg

Yesterday 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:

BMW 320i "Street-TimeAttack" (1987)

Miuge

7 oktober 2016 · 144 Inlägg

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

BMW 320i "Street-TimeAttack" (1987)

Miuge

8 november 2016 · 144 Inlägg

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

BMW 320i "Street-TimeAttack" (1987)

Miuge

9 november 2016 · 144 Inlägg

Tack Ricke!

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:

BMW 320i "Street-TimeAttack" (1987)

Miuge

20 december 2016 · 144 Inlägg

Tack så mycket!

I got my new longer injector weld bungs and welded the plenum chamber together. Injectors are Bosch 210lb with 15mm extensions with filters.
I also got 2x 380LPH fuel pumps which will feed E85 through the 7micron inline filter.

One day I scanned the oil pump back plate and made a 3D model, a blank will be most likely water jet cut, then machined:

BMW 320i "Street-TimeAttack" (1987)

Miuge

20 december 2016 · 144 Inlägg

What angle are you referring to?

BMW 320i "Street-TimeAttack" (1987)

Miuge

20 december 2016 · 144 Inlägg

It's certain that kind of issue won't happen. Fuel is sprayed at relatively fine mist at high pressure (not poured as a stream) and only when intake valve is open or about to open, airflow will carry the mixture to the combustion chamber. Furthermore spray is aimed directly to intake valve to prevent fuel droplet formation on the port surfaces.
It's impossible to create such g-forces in cornering that would affect gas flow. If it was all liquid that would change things

BMW 320i "Street-TimeAttack" (1987)

Miuge

29 december 2016 · 144 Inlägg

Holidays... Good time for the project!

Apparently it was time to finish the new engine mounts, now with delrin bushing:

You might remember I just did one gearbox cross member, but surprisingly I wasn't happy with the outcome so I did a new one:

E60 M5 driveshaft needed to be shortened 400mm, I hope my welds will hold:

While fabricating the drivetrain I wanted to revise rear axle carrier mounting one more time. I machined a couple of delrin bushings and formed some sheet metal pieces to get this appearance:

Prototype of a M30 ignition coil rack was finished too:

BMW 320i "Street-TimeAttack" (1987)

Miuge

2 januari 2017 · 144 Inlägg

Stort tack!

Vi har ju också gjort dessa prylarna för E30 ägarna, dom är till salu om det finns nån köpare:

Mer info här:
https://www.facebook.com/pg/magnusracin … 1237683966

BMW 320i "Street-TimeAttack" (1987)

Miuge

23 januari 2017 · 144 Inlägg

I've seen lot's of discussion about damper/crank hub related problems in M30 engine builds lately. I found out some Finnish builders have used ATI 2JZ damper in their builds (both M20 and S38), but I wanted to have some facts before heading to buy one. That made me contact ATI directly, luckily I did, because they didn't recommend using 2JZ damper, probably because it's low weight/inertia (for M30). Their recommendation was bigger 7" damper for a SBC so I started to search one..
One very slightly used item showed up on eBay so I had to buy it

I'll have to fabricate a new crank hub and trigger wheel to make it fit, a good thing that's a serpentine damper so I can directly drive my alternator belt with it:

Some time ago I had to acquire couple of aluminum chunks to fabricate some engine flanges, the first one was oil pickup plate I made by hand. Still need to add AN10 fittings to draw the oil line to remote oil filter sandwich plate.

BMW 320i "Street-TimeAttack" (1987)

Miuge

26 januari 2017 · 144 Inlägg

Yesterday I spent few hours thinking about the damper solution, first I gathered critical dimensions of the orginal damper, crank and hub, then I moved on designing new parts.
Chevy hub is much sturdier than M30 hub, but changing the crank front seal to a next ID size I could grow the wall thickness

Everything seems to fit rather well, trigger wheel could be located behind the damper which means orginal sensor location could be used, also belt line remains pretty much the same as orginal of course the v-belt pulleys should be changed..

BMW 320i "Street-TimeAttack" (1987)

Miuge

30 januari 2017 · 144 Inlägg

I made two more flanges, one for water in and another for water out, I'll weld 40mm bends to both flanges. No more need for that big thermostat housing because EWP

Earlier I acquired boxful of silicone hoses for coolant and charge pipes from size range 16mm to 100mm:

BMW 320i "Street-TimeAttack" (1987)

Miuge

7 februari 2017 · 144 Inlägg

Quick update of the ATI damper I'm currently printing 1/3 of the trigger wheel.. why didn't I buy a bigger printer...

BMW 320i "Street-TimeAttack" (1987)

Miuge

9 februari 2017 · 144 Inlägg

One more picture of the finished prototype with trigger wheel added:

I was thinking to spend this weekend strictly at the garage, today I continued some aluminum welding and I'll probably post more updates in the end of week..

BMW 320i "Street-TimeAttack" (1987)

Miuge

13 februari 2017 · 144 Inlägg

Clutch setup arrived, probably not going to use twin mass flywheel

Now that I also got silicone hoses I continued welding, first mounted a throttle body:

Then the other side, that's the only place where I was able to mount blow off valve:

Some coolant pipes and new mounts for the power steering pump:

BMW 320i "Street-TimeAttack" (1987)

Miuge

14 mars 2017 · 144 Inlägg

I had some struggle machining the oil pump back plate manually, I did two versions which didn't turn out too good. I also tried a shortcut welding a sleeve into the orginal cast cover.. Because of the high Mg content welds won't hold even if they would look good, here's the result of light hammering, crispy:

It was time to start over, I did some changes to model and discarded the idea of a water jet cut blank because of it's ridiculous price. I happened to find a company which would machine the part for me very cheap with their 5-axis machine. I just confirmed it fits by 3D printing a mockup:

The final part (made of AW-7075) should arrive in three weeks

BMW 320i "Street-TimeAttack" (1987)

Miuge

19 mars 2017 · 144 Inlägg

...Not again
Reason? I managed to change the engine position after modifying steering rack mounts, so when I renewed engine mounts I positioned it as low as possible and even further back. Besides the welds looked terrible now that I've learned to TIG somehow Upcoming version will be looking quite different.

Now that I got the taste of cutting I cut the comp housing outlet too:

To change it to this:

Few Finnish fellows were inquiring M20/M30 cam sensor covers from us as we had made some 3D printed prototypes earlier (in co-operation with Juuso's Garage), these anodized aluminum versions are about to arrive soon:

BMW 320i "Street-TimeAttack" (1987)

Miuge

25 mars 2017 · 144 Inlägg

Oil pan project:

Front sump is only to clear oil pump:

Long welds:

Oil pan baffle with trapdoors, screws are only temporary, those will be replaced with rivets:

Assembly taking shape: