A local e30 guy has an s50b30 putting out dnyo verified 250whp. It does have a VAC stage 2 head on it though. The motors are easily capable of making large gains in power. It just depends on your wallet.
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Trying to decide between S52 or Turb0
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Originally posted by Nesset View PostHow is it underrated when everybody wants and or has them?
If theres any underrated swap that would be the M30 in my opinion.2014 Alpine White 335i MSport
(Daily Driver)
Full Mperformance Aero
2007 Black Sapphire Metallic E92 335i (6MT)
KW V2 Coilovers
VRSF Catless Downpipes
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The dyno reports I have seen are from Z3M's, so there must be more driveline loss for e30's. Either way, the S52 is relatively cheap and plug and play for the e30 chassis. M30's while cool and period correct, are dogs.2014 Alpine White 335i MSport
(Daily Driver)
Full Mperformance Aero
2007 Black Sapphire Metallic E92 335i (6MT)
KW V2 Coilovers
VRSF Catless Downpipes
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Turbo it. If you blow it up, most people basically give their M20's away so you could always find one. I've had mine turbo'd for over a year and a half now and it has yet to let me down. I ran against a SC'd S52 E36 M3 and took him down with no issues. Butt dyno is probably 330whp or so, nothing crazy but fun with a 2700 lb car. You would be surprised how reliable the M20's are when it comes to boosting them.1989 325i - 2.7i, Holset H1C, 60lb injectors, whodwho MS-PNP.
2012 Passat TDI - DD Duty
2008 GMC Yukon XL Denali - Kiddie hauler/grocery getter
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Originally posted by codyep3 View PostThe dyno reports I have seen are from Z3M's, so there must be more driveline loss for e30's. Either way, the S52 is relatively cheap and plug and play for the e30 chassis. M30's while cool and period correct, are dogs.
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M30 swap and call it a day.My Garage
2001 Z3 2.5i Steel Gray/Black (Lexi)
1988 325ix Diamond Schwartz/Black (Izzy)
1989 325i Cirrus Blue/Houndstooth (Stitch)
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Instagram: Stone.Hopkins
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What's your goal with the car?
An S52 will feel more like an evolution of the stock setup. I picked an S52 because I just wanted a cruiser but the M20 is just to slow for what I wanted. A turbo will be more work but will make more power.
Turbos are also objectively cool. Say "yeah I've got an S52" and then say "yeah I've got a turbo". How much cooler do you feel? Way. That's how much.
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4btSi vis pacem, para bellum.
New Hawtness: 1995 540i/6 Claptrap
Defunct too: Cirrusblau m30 Project
Defunct (sold): Alta Vista
79 Bronco SHTF Build
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Originally posted by exhaust View PostWhat's your goal with the car?
An S52 will feel more like an evolution of the stock setup. I picked an S52 because I just wanted a cruiser but the M20 is just to slow for what I wanted. A turbo will be more work but will make more power.
Turbos are also objectively cool. Say "yeah I've got an S52" and then say "yeah I've got a turbo". How much cooler do you feel? Way. That's how much.
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Originally posted by ak- View PostTurbo if you like tinkering around.
S52 if you just an upgrade.
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S38?
I have a built S50 currently but always wanted S38... big 6 FTWCENTERBAR MOTORSPORT - Check out my small Bimmer/Beamer parts and custom projects business!
Instagram: @centerbarmotorsport
Facebook: https://www.facebook.com/centerbarmo...?ref=bookmarks
The Fleet:
-1984 325ei Lapis
-1991 325ix Diamond
- 2005 X5 4.4i Black Sapphire
-1972 2002tii Fjord - SOLD 7/8/17
-1991 325i S50 ///Sterling Silver/// - SOLD 9/15/17
The Bike:
-1980 R100RS Inca
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Originally posted by Danny Pallister View PostI dont mind tinkering, one of the reasons im interested in building a turbo car is because id like to gain some more knowledge about it. Ive been searching for a well documented, done right, low boost M20 build thread but havent been able to find one
Once you have a pretty good idea of that knowledge, any minor, half-assed, or even well-done M20t build you find online will paint more avenues in your head to follow in terms of what direction you think you want to go instead, whether it be better/more efficient/easier/cooler than what you read. Builds spark ideas!
The great thing is that when it's time for engine management and to tune the car(what some people dread), you have great options whether you go M20t or m/s5x turbo.
I learned a lot during my build and I'm still tinkering with it today. Hasn't left me stranded once considering the foundation is pretty solid and I have an idiot-proof restriction so I don't blow it up being negligent.
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