M30 turbo rebuild thread

[WatchMyDrift]

Where did you get that intercooler!! I need one!

[PROLAZCO]

Wow you have no idea how happy I am to see you started a new m30 thread haha I just read your entire college build thread and it was amazing. My neighbor just crashed her e34 with a b35 so I going to see if she'll sell me the engine (complete rebuilt m30 b35 with only 20,000 on the rebuild) 120,000 on the engine total. And it has the 5 speed trans. (Rare) I hope everything works put for you because I'm tired of everybody switching to an M5x/S5x. It just has no comparison to an m30

[JoeMadoo]

Where did you get that intercooler!! I need one!

I got it on eBay. It was $100. I might be getting rid of it.

Wow you have no idea how happy I am to see you started a new m30 thread haha I just read your entire college build thread and it was amazing. My neighbor just crashed her e34 with a b35 so I going to see if she'll sell me the engine (complete rebuilt m30 b35 with only 20,000 on the rebuild) 120,000 on the engine total. And it has the 5 speed trans. (Rare) I hope everything works put for you because I'm tired of everybody switching to an M5x/S5x. It just has no comparison to an m30

That's great (well not for your neighbor). Yeah I'm also more fond of the M30s, and they are so cheap and available. There's 2 different junkyards here in victorville and each one has at least 5 M30's. I'm glad you enjoyed the build thread, I think I asked a lot of stupid questions that others didn't want to ask, haha.

[PROLAZCO]

Wow that's awesome haha I've never really payed attention to any e34s here in Chicago because I've always gone for the e30s at the junk yards. I really hope I get this engine and trans. Do you happen to know which DS I have to use for the e30 if I have an e34 b35 with stock 5speed? I have access to her drive shaft too and I really don't want to pay for DS modification

[LowR3V'in]

exhaust 4 u maybe.

http://www.e30tech.com/forum/showthread.php?t=116729

[JoeMadoo]

exhaust 4 u maybe.

Ahh yes. I would like a nice stock exhaust. I dont know about $300 for that though.

I have the m30 downpipes all the way to the stock x-pipe (where the o2 is) installed. From there I was going to buy a 325i CA cat and do a single 2.5 magnaflow resonator+muffler after that. But that will also be pricier.

[JoeMadoo]

Here's the first start. Ran surprisingly smooth. I'm using the 19" Mustang Injectors and stockish plugs (my turbo plugs were colder).

Now that I know it works in stock form it's time to clean everything up. This includes:

• Re-wrap the harness and add a few wires and connectors for my VDO senders.
• Fit the stock M30 air box and move my coil somewhere.
• Going to get a stock cluster or M3 cluster (I have an A/F gauge in-place of the water temp gauge, might look suspicious)
• Need to get the rest of the exhaust system (Might get the one in San Diego)
• Need a stock o2 sensor
• E-fan install with some type of thermostat
• Fix broken shifter
• Headlight re-wire with relays.
• Want to get a white e30 trunk with no holes

[1987E30project]

Ahh yes. I would like a nice stock exhaust. I dont know about $300 for that though.

I have the m30 downpipes all the way to the stock x-pipe (where the o2 is) installed. From there I was going to buy a 325i CA cat and do a single 2.5 magnaflow resonator+muffler after that. But that will also be pricier.

I don't know if the 325i cat is going to work. I had to buy a CA 535i cat and the BAR referee actually checked the number of the cat so it matched the engine. I'm just saying.

[JoeMadoo]

Ok, thanks for the info. I looked on magnaflow's website, and it had the same size cat for both motors. The only difference seemed to be the configuration (2-in, 2-out instead of 2-in, 1 out).

[JoeMadoo]

Do you guys think a Magnaflow California cat will be acceptable? Having to find or buy the OEM e34 cat seems a little ridiculous. I know you can scrap them for $300 I can't image how much a nice used one or a new one would cost :/

[CorvallisBMW]

I'm not sure just how much engine size a standard CA cat is designed to handle, but worst case scenario you weld 2 in series then take one off after inspection :)

[JoeMadoo]

Yeah, that would be one of the worse cases. Well these cats are designed for these motors. I will probably just get the Magnaflow 535i cat since it's CARB approved for that motor, just to be safe. It will be a little harder to route that the one from the 325i.

I made a thread in the exhaust section.

[Danny]

I'm not sure just how much engine size a standard CA cat is designed to handle, but worst case scenario you weld 2 in series then take one off after inspection :)

That won't work. It wouldn't pas the visual portion.

Joe, you're best off buying Walker or Magnaflow cats and doing it your way.

[1987E30project]

Do you guys think a Magnaflow California cat will be acceptable? Having to find or buy the OEM e34 cat seems a little ridiculous. I know you can scrap them for $300 I can't image how much a nice used one or a new one would cost :/

Just get a 535i California cat. I got a Catco and I passed with no issues. Visual and the sniffer. I guess I will find out about the longevity of the cat next smog test.

[JoeMadoo]

Nice, glad to hear it. I got my magnaflow in the mail yesterday. Once I find a muffler I will get the exhaust made