e30 316 build x2 (m52/m50, turbo, 3pcs bottle caps etc)

[pazi88]

I predict a lot of broken driveshafts in your future.

This is totally where I wanted it to go :)

That may be the case :D But luckily we have the whole e34 rear axle. It's beefier than e30 original. And if it fails, the m5/540 parts can be swapped in no time.

[econti]

That may be the case :D But luckily we have the whole e34 rear axle. It's beefier than e30 original. And if it fails, the m5/540 parts can be swapped in no time.

I forgot you'd done that!

I read back to the install, do you recall why the E30 fuel tank won't fit with the E34 axle?
Thinking about doing something similar with my car but I want a useable boot so no fuel cell unfortunately

[pazi88]

I forgot you'd done that!

I read back to the install, do you recall why the E30 fuel tank won't fit with the E34 axle?
Thinking about doing something similar with my car but I want a useable boot so no fuel cell unfortunately

The e34 rear axle comes 5-7 cm cm further than the e30 rear axle so there is no room for stock tank.

e30:


e34:

[pazi88]

It's almost winter in Finland so I took my e30 for last drive before putting it to garage. Here's video about that so you could get an idea how it sounds and feels:

[econti]

The e34 rear axle comes 5-7 cm cm further than the e30 rear axle so there is no room for stock tank.

e30:


e34:

Ah right, thanks big time.
Perhaps twin under floor fuel cells with a crossover pipe? Perhaps E30 tank with modifications?

I really just need to have a look at mine once it's time to rebuild.

[pazi88]

Ah right, thanks big time.
Perhaps twin under floor fuel cells with a crossover pipe? Perhaps E30 tank with modifications?

I really just need to have a look at mine once it's time to rebuild.

Or just sink the fuel cell in the space where spare wheel should be?

[econti]

Or just sink the fuel cell in the space where spare wheel should be?

I need a spare wheel and a useable boot, because street car. Had 2 flats recently and a spare was 100% necessary

[pazi88]

I need a spare wheel and a useable boot, because street car. Had 2 flats recently and a spare was 100% necessary

Ok. I just have tyre repair spray in my trunk for flats. It has worked for me.

[Skarpa]

Ah right, thanks big time.
Perhaps twin under floor fuel cells with a crossover pipe? Perhaps E30 tank with modifications?

I really just need to have a look at mine once it's time to rebuild.

I think you wouldn't actually lose a lot of volume from stock E30 tank if you slice 5 centimeters off from the rear and replace it with straight plate. It would have to be the newer, (60 l?) tank without the joining tube, though. Also, have a good welder do it and preferably use a new, unused tank.

Also: Sounds good on the video!

[econti]

Ok. I just have tyre repair spray in my trunk for flats. It has worked for me.

I wish that was an option, but it's not worth the risk.

The good part is that I may be able to fit surge tank and external pump in under the spare wheel :)

I think you wouldn't actually lose a lot of volume from stock E30 tank if you slice 5 centimeters off from the rear and replace it with straight plate. It would have to be the newer, (60 l?) tank without the joining tube, though. Also, have a good welder do it and preferably use a new, unused tank.

Also: Sounds good on the video!

The volume of the tank doesn't bother me hugely if it's a few litres off original capacity, so yes modifying a stock tank has occurred to me.

I really just have to get mine in the air, hold a 34 rear end under it and see what'll fit

[pazi88]

Got the pistons:




Those are 8.8:1 compression ratio pistons meant for m50b25tu engine with 140mm connecting rods. But should give around 9.5:1 compression ratio with b28 crank and 135 connecting rods. Now we have almost all the parts that are needed to build the new engine.

And here is the new episode in youtube:


Also the car looks like this now if you didn't watch the video:

[pazi88]

And then the painting. To cover up all the horrors of the misaligned rust repairs we glued some m-tech II parts to the body using 2-component body panel adhesive. And then sprayed some sanding primer:













Of course after laying the sanding primer comes the sanding:


And after that I sprayed on the Alpinweiss III color:










looks quite good to be done in normal garage by amateurs instead of professionals in real paint booth.

And the video of the paint job:

[econti]

Nice as job for a garage one. Very keen to see it once it's done

[pazi88]

Nice as job for a garage one. Very keen to see it once it's done

Thanks!

After paint we took the old engine out and disassembled it:

https://www.youtube.com/watch?v=gqi_LRRmwmM

And soon after that started assembling the new engine:


Assembled:




And as usual, video about that:

https://www.youtube.com/watch?v=a16PJ03K3zQ

We also got some other goodies for the engine as RHD flywheel:


AEM coils (these are same as ign-a1 coils):


I sent the cams to be regrind and they already got back:

[pazi88]

Oh I forgot to update here.

Here is the next episode in YouTube:

https://www.youtube.com/watch?v=Zp4tybmWco4

In that we assemble the rest of the bottom and bolt the gearbox to the engine.
Doing that i noticed some differences in m50/m50tu and m52 oil pumps:


The two left ones are from non-vanos m50 and the right one is from m52. The m52/m50tu oil pump has thicker gear so it will produce more oil flow.

The housings are pretty much the same:


But one bolt is slightly offset in m52 pump compared to non-vanos m50 pump. So I needed to grind that to fit the m52 pump to non-vanos m50 block:


And I also needed to make room for ARP main studs with the girdle.


Then new timing chains and stuff:


And the bottom end is assembled. We didn't have m50 spider hose in our garage so we needed to make the metal tube system from m52 to fit m50 block:


Then goes in the RHD engineering heavy duty flywheel:


And that seemed to be too low so we modified the clutch lever to compensate that:


And after gearbox, the engine went in:


Before bolting the head I checked the valves. And two of those seemed to leak so I fixed those.


Here is the video of the head installation:

https://youtu.be/uapRQ-tAw48

I painted the exhaust manifold with Martelius Black satin because the VHT paint did burn away:


And here is all in:


From that I haven't yet made any videos but here's what happened next: