Back to original brake booster

anthony · Post by **anthony** » Mon Feb 06, 2012 11:24 am

For my original engine swap to a m30b34, I also swapped out the E12 brake vacuum booster for the smaller e30. I got the idea from reading posts. After swapping again, to the m30b35, I desired to go back to the original, seemingly plushy, e12 brakes. I booster was available at the pnp and I have my plushy brakes back again.

The fit is fine and there is definitely room. I put the e12 booster in after the engine swap and looking at it now, to put an engine in, with the b34 or 35 manifold and the big booster already in place, does not leave much working room.

labimmer · Post by **labimmer** » Mon Feb 06, 2012 12:21 pm

Your booster neck is shorter than the one I have in my 1975 530i. When I did the swap to M30B32 I had to keep the original manifolds.
I am very happy with B32 and 5 speed 265 getrag.

On 02/06/12, anthony <ketcham99@comcast.net> wrote:

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For my original engine swap to a m30b34, I also swapped out the E12 brake vacuum booster for the smaller e30. I got the idea from reading posts. After swapping again, to the m30b35, I desired to go back to the original, seemingly plushy, e12 brakes. I booster was available at the pnp and I have my plushy brakes back again.The fit is fine and there is definitely room. I put the e12 booster in after the engine swap and looking at it now, to put an engine in, with the b34 or 35 manifold and the big booster already in place, does not leave much working room.
Anthony1980 528i 3.5 M30B35 motronic 1.3
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