E34?
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Vin Sanity
Mad Mechanic


Joined: 09 Jan 2004
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PostPosted: Thu May 30, 2013 3:47 pm    Post subject: E34? Reply with quote

So as the facts come in, I will add to the post, leading up to potential purchase, and then teardown/build, if we get that far.

So far:
E34 525i automatic (Now I can't remember if it's a 1990 or 91)
If it is a 90 it has a M20B25, if it's a 91 it will most likely be a M50B25 non vanos
Head gasket is blown. Head condition unknown. Engine was driven til the failure point then parked
Price is $400
Black on black leather and looks to be in nice shape other than paint oxidation a la Brody's e30.

First and foremost if/when I start the build I'll need to figure out the drive train plan. I will need a manual transmission and a pedal box with all 3 pedals first off, but might need to make decisions regarding the engine first.

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PostPosted: Thu May 30, 2013 8:19 pm    Post subject: Reply with quote

I'm not sure the E34 ever had the non-vanos m50. Hopefully I'm correct.
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Vin Sanity
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PostPosted: Thu May 30, 2013 8:24 pm    Post subject: Reply with quote

M50B25TU was introduced in 93 in the US E34. Unfortunately for all of us, you are wrong...
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Marcus Brody
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PostPosted: Fri May 31, 2013 1:05 am    Post subject: Reply with quote

Meh, do an engine swap anyway.
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PostPosted: Fri May 31, 2013 10:55 am    Post subject: Reply with quote

For some reason I thought the E34 had it earlier. Not that it's a big deal, as Mark says. A m50+zf would only be ~$500 if you look.
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Vin Sanity
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PostPosted: Tue Jun 04, 2013 9:35 pm    Post subject: Reply with quote

OK... why... WHY is e-thirty-four auto-substituted for F150 Rollin coal son? Jesus...
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PostPosted: Tue Jun 04, 2013 9:42 pm    Post subject: Reply with quote

For the lulz, man.


For the lulz.
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Dr. SexBot
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PostPosted: Tue Jun 04, 2013 9:51 pm    Post subject: Reply with quote

We had some lulz. #I'm a choad.
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Vin Sanity
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PostPosted: Tue Jun 04, 2013 9:52 pm    Post subject: Reply with quote

Rrrrr... anyhow.. just for the sake of argument, what would need to happen to get an S52 into an E34?...
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PostPosted: Tue Jun 04, 2013 11:56 pm    Post subject: Reply with quote

OBD1 conversion for one, which I'm pretty well convinced isn't worth the time or money.
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Vin Sanity
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PostPosted: Wed Jun 05, 2013 1:29 am    Post subject: Reply with quote

Applying my logic, and by no means does that mean it is good logic nor that I want to do this, just to keep the idea and thinking machine alive, wouldn't one be able to transplant the engine, harness, and DME to the OBD1 vehicle, and just convert the vehicle itself to OBDII? This was a general brainstorm I had before this project even came around. Just because it would make data logging/tuning/etc a little more easy, if only due to more available tech...
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PostPosted: Wed Jun 05, 2013 12:53 pm    Post subject: Reply with quote

I'm under the impression that that would be even harder. I'm sure John will have some more technical light to shine on this, though.
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PostPosted: Wed Jun 05, 2013 2:37 pm    Post subject: Reply with quote

Some of the obdII emissions equipment is part of the body, so you would make those systems operate, or appear to operate. All of this is doable, but it's costly and time consuming.

Also, the s52 is more expensive, and without being converted to obdI makes the same power as the s50. The conversion is probably 1k and isn't a great return on your dollar unless you want to stay na.

Things are different now, but for a time tuning options were limited for the obdII dmes. I think you're still better off with me3.3.1, but you will find people that can work with ms41.1 too.

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Vin Sanity
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PostPosted: Wed Jun 05, 2013 10:29 pm    Post subject: Reply with quote

So turbo S50 then?
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PostPosted: Wed Jun 05, 2013 11:33 pm    Post subject: Reply with quote

If you want more power, get an S62 for it and be the pope of Bimmertown.
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