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Old 07-23-2007, 12:17 PM   #1
SamE30e
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Turbo E30 M20?

Now i've been contemplating the idea of eventually going turbo on the 325e.

Questions

Without touching the internals, what PSI can you safely run on 91 octane with a garrett t3 .48ar, front mount IC, 666 fabrications turbo adaptor?

What is the weakpoint in the e30 drivetrain?

Is a fuel controller necessary for low boost applications or can you use a aftermarket chip?

Will the m20 injectors fuel enough for low boost or will a upgrade to m50 (if possible) necessary.

Google apparently isn't my friend.

Thanks
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Old 07-23-2007, 06:52 PM   #2
BmW1819
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one thing not 100% sure but is there a huge point to turbo a E?? i would super charge a E and turbo a I or IS high revs your boost is gonna be kickin in a 1000-2000 rpm it's up to you gonna have quick gear changes
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Old 07-23-2007, 06:53 PM   #3
FuryriderX
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injectors and some type of engine management (standalone, chip) are almost a must. i would guess around 8-10psi on stock internals would be safe. some have run 15+, but i dont think reliability was a goal.

i really dont know what the weakpoint is. halfshafts, maybe? haha

edit: turboing an e is not necessarily a bad idea, you start with a lower compression to begin with, so you can run more boost without detonation.
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Old 07-23-2007, 06:55 PM   #4
SamE30e
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Well I was looking to get the best bang for buck, I have basically everything buy a manifold and misc IC tubing.
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85 - 325
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Old 07-24-2007, 10:33 AM   #5
everlast
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turbo e's are pretty popular; their low compression fits well with a turbo. Plus, you can swap an 'i' head onto it later for better flow and even lower compression.

markD makes a chip for an 'i' for turbo, maybe he has one for an 'e' too. Otherwise, you could use a RRFPR for added fuel. Some people tap into the cold start injector for extra fuel on demand, but that's pretty ghetto.

I would also include a wideband O2 sensor. Innovate make one for about $200CND that you can hook to a gauge or a laptop to see your air fuel mixture. If you can get the mixture right, your engine will be safe. If its wrong, the engine will not last long.

I would aim for 5psi a first as a test, then work on a better fuel solution (standalone, or chip) and go to 8psi.
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Old 07-24-2007, 10:56 AM   #6
SamE30e
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Quote:
Originally Posted by everlast
turbo e's are pretty popular; their low compression fits well with a turbo. Plus, you can swap an 'i' head onto it later for better flow and even lower compression.

markD makes a chip for an 'i' for turbo, maybe he has one for an 'e' too. Otherwise, you could use a RRFPR for added fuel. Some people tap into the cold start injector for extra fuel on demand, but that's pretty ghetto.

I would also include a wideband O2 sensor. Innovate make one for about $200CND that you can hook to a gauge or a laptop to see your air fuel mixture. If you can get the mixture right, your engine will be safe. If its wrong, the engine will not last long.

I would aim for 5psi a first as a test, then work on a better fuel solution (standalone, or chip) and go to 8psi.
My brother has a Zenitronix wideband setup in the garage. Seems pretty simple, nothing out of the ordinary for turboing a car lol.
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85 - 325
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