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E34 (1989 - 1995)

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  #1  
Old 06-19-2016, 07:06 PM
94530iMD 94530iMD is offline
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Mein Auto: 94 E34 530I Manual
540 parts to 530?

What parts are swapable from a 540 to 530 beside The obvious. Motor is what I'm thinking. I have swapped intake manifold and throttle body but I was wondering on cams and heads. Will they bolt up ? Or where can I find a aggressive cam?
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  #2  
Old 06-19-2016, 09:53 PM
Hippy Hippy is offline
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Mein Auto: 525i
not 100% sure if this will help but,

http://www.bimmerforums.com/forum/sh...ne-swap-thread
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  #3  
Old 06-20-2016, 10:53 AM
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Essentially they are much the same with only chamber diameter differences. They use the same casting for the block even. Roughly 89mm bore diameter for 540 vs. 84mm for the 530. That's why intake is slightly smaller as well from my understanding. Heads are different, and I'd expect that to be due to compression chamber sizing, but cams are the same. Also, valves are about 2-3mm smaller in diameter for the 530. I won't pretend to know, but it may be feasible that you could increase flow by using the B40 heads on your B30. Again, it would decrease compression if the chamber in the heads is bigger though, and that could net a loss far greater than anything gained in flow. Maybe someone around here has a better clue on this, but I can definitely say, that engine isn't worth the expense of trying to put in hotter cams. No flipping way.
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1995 E34 540ia
160,000 Miles
VIN# ...GF32404
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Old 06-20-2016, 11:05 AM
94530iMD 94530iMD is offline
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Ok so either drop the whole motor in there or just let alone with what I have already.
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  #5  
Old 06-20-2016, 11:10 AM
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That's how I'd see it. If you want a bit more, get an entire long block.
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1995 E34 540ia
160,000 Miles
VIN# ...GF32404
Hellrot Red

Fuelly

My Basic Repair History (Edited 1/27/2015)

Ongoing comparison between two E34 540ia's

OBC4 Hidden Functions : Link
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  #6  
Old 06-20-2016, 11:12 AM
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TheEinstein TheEinstein is online now
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I've got a couple spare B40 heads, but you could nearly get an entire engine for the minimum couple hundred I'd want for them now that they're 100% cleaned and checked.
__________________
1995 E34 540ia
160,000 Miles
VIN# ...GF32404
Hellrot Red

Fuelly

My Basic Repair History (Edited 1/27/2015)

Ongoing comparison between two E34 540ia's

OBC4 Hidden Functions : Link
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