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Old 07-30-2013, 12:32 AM   #46
BigD
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You're missing the point some of us are trying to make. It's not about preferences but trying to figure out what you want. If all you want is some more go with 200-250whp, there is a simple, nearly plug and play solution which fits your budget. You talk about familiarity, but you need to trust us when we say that knowing how to maintain an M42 does not translate to knowing how to tune and maintain a turbocharged one. While an S52 is just a factory motor with all procedures online.

Trouble starts if you want 300whp or more, then options become complicated enough that turbocharging an existing 200-250whp motor becomes a reasonable option.

So again, if you want to turbo your engine for fun, go for it - just don't say you're doing it for practical reasons because you'll just get "tarred and feathered". If all you want is a reliable 200-250whp, S52 is the only sane choice.
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Old 07-30-2013, 12:18 PM   #47
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OP have you ever owned or built a turbo car?
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Old 07-30-2013, 12:26 PM   #48
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afaik you can keep your getrag with a 24v swap, and i'm sure you can get a s54 done for less than 10k.

i'm done telling you what to do
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Old 07-30-2013, 09:18 PM   #49
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Quote:
Originally Posted by ///tyron View Post
OP have you ever owned or built a turbo car?
Yes if twin turbo transport trucks count?
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The major difference between my 318is and an e30 M3 is that the noises come from the engine and not the passengers
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Old 07-30-2013, 09:24 PM   #50
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Ok, here is the deal. I need a few sponsors to make up the $7000 difference and I will gladly drop in the S54. Otherwise let me bolt on a stupid turbo to my powerless stock iron block. Ok?
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Old 07-30-2013, 10:12 PM   #51
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Yes if twin turbo transport trucks count?
No, not by a long shot.

I see your point, as well as everyone elses. Theyre just trying to save you the time, effort and money.

Just be prepared to spend at least 4-5 grand if you decide to go the turbo route. Not far off from s54 territory.
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Old 07-30-2013, 10:32 PM   #52
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Damn... 1,500 ft/lb of torque is pretty fun though, enough to twist 10 inch u-beams.

Seems like many others have opted for a turbo over the swap. A few setups are dirt cheap using Saab parts. Maybe I'll call it the slaab build.
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Old 07-31-2013, 08:50 AM   #53
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One of the things the M42 guys have been doing to make a cheap turbo manifold is buying one of the ebay M50 ones, then chopping it and capping it off...



Then fab an adapter to set the turbo at the angle you want...




Here's the build thread...
http://www.m42club.com/forum/index.php?topic=8207.15
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Old 07-31-2013, 09:31 AM   #54
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Pretty good for a budget build.

I think I might have the manifold built from scratch though. I'd like to have the turbo sit a little lower and forward to give some space between the hood. Should be room to run the outlet pipe over and down the fender along with a heat shield or air box for the cone filter.
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Old 07-31-2013, 10:01 AM   #55
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I really want to see what happens with this looks like a wicked project
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Old 07-31-2013, 10:31 AM   #56
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Go for it, turbo your M42. There's a guy on bimmerforums (username: Jakeb) that has been swapping turbo/non turbo M42's into 2002's and e21's. He builds his own manifolds from scratch. Search in the e21 section of bimmerforums and you should find pic's of his work.

Make sure you get a quality turbo...I'm slowly starting to build a turbo M42 in an e21...still doing my research but I'm likely going to go with a borg warner 6258 EFR turbo...can be found in the Solstice 2.0 turbo's.

Planning on going with a 6 speed as well...gotta be unique.
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Old 07-31-2013, 10:41 AM   #57
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Wanna know how I know that is a horrible idea and that that manifold will crack?

Cheaping out like that on turbo builds is what gets people into trouble in the first place.

If you're being serious about the turbo situation, at least get a proper manifold like this from Otis:

http://www.r3vlimited.com/board/showthread.php?t=224115
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Old 07-31-2013, 10:42 AM   #58
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Quote:
Originally Posted by Eau_Rouge View Post
I'm slowly starting to build a turbo M42 in an e21...
Any pics? M42 already installed?
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Old 07-31-2013, 11:42 AM   #59
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Quote:
Originally Posted by NOTORIOUS VR View Post
Wanna know how I know that is a horrible idea and that that manifold will crack?

Cheaping out like that on turbo builds is what gets people into trouble in the first place.

If you're being serious about the turbo situation, at least get a proper manifold like this from Otis:

http://www.r3vlimited.com/board/showthread.php?t=224115
It's true that the longevity of the ebay manifolds is very inconsistent. Some people have issues with them cracking, while some people use them without any issues.

After having worked with ebay junk, I'm definitely for starting with a good quality manifold and turbo, which is why that link was the first thing I posted in this thread.

I was just throwing some other ideas out there to give the OP a taste of what some other guys have done on their M42s.
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Old 07-31-2013, 11:50 AM   #60
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if you want a custom manifold built, check this guy out in kingston... does really good work!

https://www.facebook.com/HellaFab
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