Just had the old girl on the dyno an after opinions on weather it's a good result or bad one
M52 running an m50 manifold with a danthe map, k&n filter
I got 207.8bhp and 204.7ft-lbs
M52 dyno
Moderator: martauto
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jimbom30cab
- Tech 1 freak
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- Joined: Mon Oct 12, 2009 11:00 pm
- Location: in the garage
Very close to mine
Henry had a few more if I remember was about 225bhp
Henry had a few more if I remember was about 225bhp
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HairyScreech
- Engaged to the E30 Zone

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My totally standard B28 ran 180hp and 200lbft with a tank full of asda finest on a known low dyno so I would say if its know to be a conservative dyno then your pretty much spot on.
Dyno variation can easily be 10% given you are measuring at the wheel contact patch and back calculating it at the flywheel.
Dyno variation can easily be 10% given you are measuring at the wheel contact patch and back calculating it at the flywheel.
2.8 development thread http://www.e30zone.net/modules.php?name ... c&t=170822
m3.3.1 m20 thread - now running, chip needed - any volunteers?
http://www.e30zone.net/modules.php?name ... =viewtopic&
m3.3.1 m20 thread - now running, chip needed - any volunteers?
http://www.e30zone.net/modules.php?name ... =viewtopic&
People can say that pretty close to normal but it’s impossible to say without seeing the full curves and AFR’S as to whether it’s a good result. I guess what im saying is of all the information you can get from a simple power run the peak torque and peak hp is a mere fraction of the story”¦.
E30 325is with M20B31
- Carl911rugby
- E30 Zone Newbie

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Mine was 212 bhp and 202lbs/ft with a bad air leak!! I need to get it checked again now the air leaks have been fixed, as it drives a lot better!!
- 318isturbo
- E30 Zone Regular

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hi guys how much does it cost to do the m52 engine swap
- Brianmoooore
- E30 Zone Team Member

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That depends entirely on who is supplying the parts, whether you are doing the work yourself or paying to have it done, and the quality of the work to be done.
Anything from making a small profit on the whole thing, to paying out thousands for a quality turn key job.
Anything from making a small profit on the whole thing, to paying out thousands for a quality turn key job.
- Carl911rugby
- E30 Zone Newbie

- Posts: 16
- Joined: Sun Jul 13, 2014 11:00 pm
2k to 4K dependant on quality of fit!
Hope that helps! Well worth it!!
Hope that helps! Well worth it!!

