DIY: In depth M52/S52 OBD2 swap

[Curt Hayes]

I have done the eta swap in my e30, and it took me about 20 hours, I am curious about how much this would be? I have a e36 m3 I am going to be swapping whatever I need off of. Any idea or am I asking too much here... Anything helps.
Thanks,
Jimmy

I've seen people say they can do this over a weekend, but it took me several months of evenings and the occasional weekend day to get it done. Seemed like every time I turned around I was missing some part.

[Braziliangabriel]

You live in California, so I'm assuming you took it through a BAR inspection. What's needed to pass?

[Sirjustinderek]

are these pictures working for anyone else? just shows a little box with a ? in it. Kinda need this as a reference haha

[Rdannyr]

Most don't work for me either. Hopefully the go back up. I will need these soon to lol.

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[craiggroves91]

Hey everyone, I realize that the pictures are down. It looks like the image hosting site I used back in the day is no longer around. I might have some of the pictures on my computer or an old phone, but I fear that some of them were directly uploaded to the hosting site and I might not have them. So I'll either have to hunt or try to take some new pictures of what I can.

I am super busy with school, so idk when this will happen. I have made some edits to the OP already in regards to links and stuff and will fix the pictures slowly but surely.

I'm sorry gang

[boywonder]

Hey everyone, I realize that the pictures are down. It looks like the image hosting site I used back in the day is no longer around. I might have some of the pictures on my computer or an old phone, but I fear that some of them were directly uploaded to the hosting site and I might not have them. So I'll either have to hunt or try to take some new pictures of what I can.

I am super busy with school, so idk when this will happen. I have made some edits to the OP already in regards to links and stuff and will fix the pictures slowly but surely.

I'm sorry gang

ASAP would be great. I am just starting the process.

[Ali//325i]

For those running the m50 manifold on the m/s52... What throttle body are you running? My motor didn't come with a throttle body and there's a local guy selling an m50 intake manifold and throttle body. Curious as to which throttle body I should run. I would prefer to keep obd2 if I can.

[BlackSpeed66]

If you're staying OBDII you want the S52 throttle body.

[Northern]

use whatever throttle body you want, but the gasket setup switches between OBD1/2 manifolds, so I ran the OBD1 TB with the M50 manifold instead of making some sort of sealing plate.

Unless you're retaining ASC-T or whatever and need the extra throttle body.

[Leroyjenkins]

I have a 1997 bmw m3 with s52 in it that I plan to swap into my 89 e30
What else would I need ?

Not sure on what tranny is in it I know it has the orange sticker on the tranny and it's a 5 speed

[Curt Hayes]

I have a 1997 bmw m3 with s52 in it that I plan to swap into my 89 e30
What else would I need ?

Not sure on what tranny is in it I know it has the orange sticker on the tranny and it's a 5 speed

Go back to page one of this thread and start taking notes.

[craiggroves91]

You guys are in luck! I am finding some pictures from old phones on my laptop and I am uploading them to photobucket and getting on the thread. We will be back to being the most popular unstickied S52 swap tutorial!

[968Reckless]

You guys are in luck! I am finding some pictures from old phones on my laptop and I am uploading them to photobucket and getting on the thread. We will be back to being the most popular unstickied S52 swap tutorial!

Hahah wonderful maybe they will sticky it now!


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[AllydNYC]

You guys are in luck! I am finding some pictures from old phones on my laptop and I am uploading them to photobucket and getting on the thread. We will be back to being the most popular unstickied S52 swap tutorial!

Yes!!! I'm at the point in my swap with coolant lines and such that made those pictures you found extremely helpful. I owe you a beer once my car gets on the road.

For the metal hose to overflow tank is this the hose you used and cut? And if I'm understanding correctly I can use what's left of that hose for one of the heater core hoses as well.

https://www.ecstuning.com/b-genuine-bmw-parts/overflow-bottle-hose-bottom/11531740649/

And since my car is a 318is as yours is, what temp sensor/switch did you use for the radiator to get the SPAL fan to turn on? M20 one?

[craiggroves91]

Yes!!! I'm at the point in my swap with coolant lines and such that made those pictures you found extremely helpful. I owe you a beer once my car gets on the road.

For the metal hose to overflow tank is this the hose you used and cut? And if I'm understanding correctly I can use what's left of that hose for one of the heater core hoses as well.

https://www.ecstuning.com/b-genuine-bmw-parts/overflow-bottle-hose-bottom/11531740649/

And since my car is a 318is as yours is, what temp sensor/switch did you use for the radiator to get the SPAL fan to turn on? M20 one?

I'll be expecting a beer :)

For the hose I can't tell you for sure as it was a while ago that I hacked it up, but that seems to be it. I remember using the leftovers in several places.

I use the 82 degree switch by FAE #36050


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