Hey all I have been kicking this around but I'm going to go ahead and purchase an m30 variant. I am also going to pick up the manual that is sold here that will help dissect what is needed for the swap. I am curious in which car should I get the engine from? And which is the easiest to swap (if there are any differences). I have an 87 535 car local that I can get everything out of that was rolled. Looking forward to your suggestions and knowledge.
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B35's are easier just because there harness is the same as a late model e30 and you don't need to swap oil pans. However you can simply 1.3 motronic swap the b34 which is in that e28 and it will be plug and play it's what I did. Also the b34 is a way better motor for boost.
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Originally posted by ThatOneEuroE30 View PostB35's are easier just because there harness is the same as a late model e30 and you don't need to swap oil pans. However you can simply 1.3 motronic swap the b34 which is in that e28 and it will be plug and play it's what I did. Also the b34 is a way better motor for boost.sigpic87 325E The Honey Badger
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If that's your goal, then the M30B35 is a good choice. Bigger ports, bigger valves, higher stock compression and it bolts in - Garagistic mounts would allow you to use cheap e34 headers.
A decent set of headers & a chip would see you in the range you want - add some headwork and a hotter cam and you'll be up around the 260 mark (that's what Alpina got from their version of the M30B35).
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A b34 (8:1 c.r.) has 182 hp, b35 (9:1 c.r.) has 208 hp, euro m30 (10:1 c.r.) has 218 hp, Alpina, Hartge, and Schnitzer got 250-260 out of these with high compression and a bunch of other changes. I would guess that with the best engine management these days you could add maybe 10 hp to these numbers.
You might even want to consider a low boost turbo motor because you can get good power pretty cheaply with a factory manifold which not many people want these days.
The m30 sure gives a lot of options:)Last edited by Bearmw; 12-26-2014, 07:53 PM.Never argue with stupid people, they will drag you down to their level and beat you with experience. -Mark Twain
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