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

[pazi88]

Once the wiring covers are all on that will look fantastic

I hope so :D

never fail to impress. This thread has so much good stuff in it

Thanks a lot!

Sounds like you got a new microphone, new vids are good quality :)

I like that catch can. Did you just fill it with stainless chips or did you weld in some baffles?

Same old. Just found new video editing tricks to make sound lot better :D

There are few baffles. That engine has so little oil coming out of breather that it doesn't require special trickery in catch can. There is just quite much e85 vapors coming out and condensing there, so that's why we needed bigger one.

BTW new video about my car: https://www.youtube.com/watch?v=zONO1cf-GxE

[pandaboo911]

Sounds like you got a new microphone, new vids are good quality :)

I like that catch can. Did you just fill it with stainless chips or did you weld in some baffles?

[wworm]

never fail to impress. This thread has so much good stuff in it

[econti]

Once the wiring covers are all on that will look fantastic

[pazi88]

Finished the ms3x megasquirt. For looks I 3D printed logo and painted the box black.


The back has CAN-interface port, extra map for exhaust pressure and the wire bundle has the stuff that wasn't on the stock ecu connector, like boost solenoid output, VSS input, flex fuel input etc.


The cherry hall sensors are now wired to stock sensor connectors so that those will fit directly to stock wiring harness.


With first try I hand no signal from the sensors at all. WTF. Well for the crank sensor I forgot to fully plug in the connector :D But for cam sensor, we had forgot to install the trigger plate to the end of the cam. After I installed that, I got the wanted signals from the sensors:


Full RPM sync:


Unfortunately I had missed the part in megasquirt documentation that the coil and injector outputs need to be wired according to the firing order. So we couldn't yet start the engine before I change the wiring. But here is how the engine looks now:


Here is the newest video: https://www.youtube.com/watch?v=w15RmezlVvE

[pazi88]

Love the build, keep the updates coming please!

Thanks! I will.

Just got the flexfuel sensor for my car:


This one is cheapo one from eBay. About third of the price of genuine one. But comparing to the genuine one I got these are 1:1 same part. Maybe even from same production line. Interesting to see if there is differences how this cheapo one works compared to genuine one.

Also got the fuel pump bracket for in-tank fuel pump. So I should now get the engine running again during the Easter. I got one already. But it was so rusted that rather than spending lot of time refurbishing it, I just bought the cheapest replacement pump kit I did find, to get the bracket. The fuel pump is probably garbage but That will be replaced with the 450lph walbro. (I got the e85 one which is bit more expensive than the regular one)

I also got the ms3 for the ONE electrically finished, so we can test that also:


The extra rs232 port is in reality CAN connector. It will be used to connect extra gauges and maybe even EGT sensor unit. I got 3D printer and to test that I printed mount for the connector.

[Julien]

Love the build, keep the updates coming please!

[Javier h]

Nice

So an M52 with S52 cams has better overall "initial" performance than

and stock M52 with M50 intake

in the sense that the power comes quicker.

Most go M52 with M50 intake and S52 cams... are they just not getting a better bang for the buck especially if they want to feel power initially?

Like most, as daily drivers, I am not necessarily redlining the car on every shift. Sounds like the S52 cams is a mild improvement from stock but worth it if you get the cams at a reasonable price and are in the engine already for lets say a headgasket.

For those that race, and keep their engines at 3500 rpms....the balance of the modifications suits them.

Great insights!

Javier

[pazi88]

New video of my e30 finally out: https://www.youtube.com/watch?v=y5jyKYTsZFY

[pazi88]

Makes a whole lot of sense to me. Are you running different cams in this engine too? If I recall, I remember you talking about running an m54b30 intake cam (with modified vanos gear) in one of your vids but I dont know if you said you'd be running it on this engine.

Yeah I have m54b30 intake cam and m50 non-vanos intake cam as exhaust cam (both are 240 degrees and 9.7mm lift).

Finnish guy made comparisons with m54b30 intake cam and m50/m52 intake in NA engine. I didn't find the graphs anymore, but with m54b30 intake cam there is only about 5hp difference between m52 and m50 intake. (not the 20-25 difference as there is with stock intake cam). And with m52 intake + m54b30 cam, you get +10hp and +20 Nm at 4000 RPM compared to m50 intake. Also the torque peak start 1000 RPM lower with m52 intake.

So conclusion: With 100% stock m52b28 engine, you get 20-25 hp more with m50 intake at top end (you lose same amount of low end torque). So if you keep your engine revs high, that is good mod. But if you have better cams in your m52b28, it's better to have stock m52 intake.

[wworm]

I don't see reason why not to. With m52 intake I get much better low end and off boost drive-ability and it's not that big restriction as people think. I may loose few hp (probably not) at top end with that but I can get as many HP I wan't just raising the boost. It's all about the area under the curve. Not how high your peak hp is.

Makes a whole lot of sense to me. Are you running different cams in this engine too? If I recall, I remember you talking about running an m54b30 intake cam (with modified vanos gear) in one of your vids but I dont know if you said you'd be running it on this engine.

[pazi88]

Sorry if this has already been addressed but, any specific reason you're still running the m52 intake manifold rather than the more open m50 one?

I don't see reason why not to. With m52 intake I get much better low end and off boost drive-ability and it's not that big restriction as people think. I may loose few hp (probably not) at top end with that but I can get as many HP I wan't just raising the boost. It's all about the area under the curve. Not how high your peak hp is.

[wworm]

Sorry if this has already been addressed but, any specific reason you're still running the m52 intake manifold rather than the more open m50 one?

[pazi88]

Here's new video of the ONE: https://www.youtube.com/watch?v=yc3rFHl-PWc

And things have continued after that video was made. With the throttle body, we did end up with this solution:


There was also lot of other little things to get all fit together with that intake, but here it's painted, installed and charge pipe mocked up:




Very few pics, but upcoming video shows everything in more detail..

We also installed PLX wideband lambda:


Then back to my e30. Took the intake off to change the starter and fit the oil and fuel pressure sensors:


The broken starter. Works otherwise well, but I think that the solenoid is busted. The starter just rotates but the wheel doesn't move by it's own.


I added oil pressure and temp sensor to the filter housing, but forgot to take a pic. But here is the fuel pressure sensor mounted to fuel rail:


Fits well:


The pressure sensors will be wired to the new ms3x megasquirt. Related to that I took apart the front of the car. I had to replace the broken washer fluid hose and the weak spal fan will be replaced by much more powerful e39 fan that will be PWM controlled my ms3x:


The e39 fan assembly is not direct bolt on, but should fit with some massaging. This fan is wrong one because I accidentally bought relay controlled one instead of the PWM controlled:


The fan will be controlled by the ms3x based on coolant temp at the radiator. For that I modded second m52 coolant temp with helicoil to fit the radiator end and I will run wires from that to extra 5v analog input on megasquirt:


And here is the correct e39 with the PWM control unit:


Unfortunately I had lot of problems fitting that because of my measuring error. With the thick intercooler I have very little room between the cooler and rad. And I did destroy that new fan in the process. But eventually I did manage to fit the "wrong" e39 fan to the rad and installed the PWM unit to that.


The radiator sits now 5mm closer to engine than normally, but you hardly even notice that:


And all fits behind the IC now:


I also changed my mind fitting the ms3x to the ms41 case, so it's now inside e30 m10 carb control box, which is huge:


That is now almost ready and I could test how it works. And everything it tested worked as should. Here is me testing the PWM control to the fan:

[pazi88]

I went to this website and it doesn't show the intake manifold out of stock, it doesn't show it at all. They must have stopped making them all together.

Yeah that's why I said that maybe you should ask them I they will have it available in future.