M52 dyno

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heathy325
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Sun Mar 13, 2016 10:03 pm

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
jimbom30cab
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Mon Mar 14, 2016 9:42 pm

Very close to mine

Henry had a few more if I remember was about 225bhp
HairyScreech
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Mon Mar 14, 2016 10:53 pm

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.
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&
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reggid
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Tue Mar 15, 2016 2:26 am

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
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Carl911rugby
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Tue Mar 15, 2016 11:31 am

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!!
heathy325
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Tue Mar 15, 2016 7:29 pm

Thanks everyone I was told the afr was bang on though
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318isturbo
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Sat Apr 23, 2016 11:19 am

hi guys how much does it cost to do the m52 engine swap
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Brianmoooore
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Sat Apr 23, 2016 2:03 pm

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.
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Carl911rugby
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Sun Apr 24, 2016 12:14 pm

2k to 4K dependant on quality of fit!
Hope that helps! Well worth it!!
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