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Old 12-11-2003, 10:44 PM   #1
Zim Zimma
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1993 325is s/c or turbo

I have just recently purchased a 325is as a father son project car, and my father and I were lookin at s/c or t/c. Which do you guys recommend. Also which manufacturers, so far i have looked at AA Ess and dinan superchargers, but i havent really been able to find an respectable turbo manufacturer. Anyone know of any reliable bmw turbo manufacturers. Price is a big factor so nothing too expensive...

Any suggestions would be GREATLY appreaciated!!!
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Old 12-11-2003, 11:03 PM   #2
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I would say S/C for sure I had one on my S10 SS, loved it. Power on tap. no lag. Vortech is a good manufacturer. I would say ask Djcontra if you go this route. His ride is hooked up.
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Old 12-11-2003, 11:22 PM   #3
thinair
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You haven't found a reputable tubro company? You mentioned AA, they're the most reputable BMW turbo company out there.

As for a supercharger, the new Stimpee twin screw positive displacement superchargers are looking very promising.
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Old 12-16-2003, 02:56 AM   #4
Zim Zimma
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Your right AA does make turbos aswell my bad.. the only problem with this is that these s/c and turbos are well into about 7-g to up to 15g for stage 2 turbos..

There must be someone or some way to get a turbo or s/c for alot cheaper..

Any ideas n e one?

Thanx
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Old 12-16-2003, 03:06 AM   #5
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Quote:
Originally posted by Zim Zimma
There must be someone or some way to get a turbo or s/c for alot cheaper..
Here are your criteria:

- Forced induction
- Reliable
- BMW
- Cheap

Pick 3 of the 4 options
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Last edited by thinair; 12-16-2003 at 03:08 AM.
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Old 12-16-2003, 05:32 AM   #6
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Incredibly simple, yet incredibly true.
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Old 12-16-2003, 09:01 PM   #7
paul
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go turbo turbo turbo and build it yourself and install as much as you can and it will be cheaper. when i'm finshed i'll post the cost with taxes and all and pics will be up. i'm just waitting for my manifold thet sent me one with out exturnal wastegate port. hope that gives you a better idea
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Old 12-16-2003, 10:49 PM   #8
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Quote:
Originally posted by paul
go turbo turbo turbo and build it yourself and install as much as you can and it will be cheaper. when i'm finshed i'll post the cost with taxes and all and pics will be up. i'm just waitting for my manifold thet sent me one with out exturnal wastegate port. hope that gives you a better idea
Don't forget tuning costs, dyno time is very pricey.
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Old 12-20-2003, 02:53 AM   #9
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Wouldn't FI produce more heat under the billet? Also, I'm under the impression that Turbos are better for long distance driving and come with a few hidden cost, is this false?
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Old 12-22-2003, 07:05 PM   #10
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You can supercharge your car easy for about $5000 CDN, and aside from having somebody manufacture you a bracket to hold the supercharger in place, it's a fairly easy install.
Turbos will give your car much more potential, but will require a lot more work to be done on the engine to make it worth while.
(what good is running the turbo at 4 or 6psi to be safe when it only kicks in at 3500 ~ 4000rpm?) With a supercharger though, you can safely run at 4 to 6 psi without any major internal work, and the power will be there right from the get go.
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Old 12-22-2003, 09:12 PM   #11
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well im sure its much different on BMWs but for my Civic i can custom make a turbo kit for around 1000$US... that includes the turbo, fuel, and all the lil things like a BOV, wastegate, etc...
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Old 12-22-2003, 10:29 PM   #12
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Quote:
Originally posted by AkiraEJ8
well im sure its much different on BMWs but for my Civic i can custom make a turbo kit for around 1000$US... that includes the turbo, fuel, and all the lil things like a BOV, wastegate, etc...
somehow I have to doubt that figure. I'm sure it can be done, but it wouldn't be a very reliable and worthwhile setup. My intercooler and piping alone is over the $1000 mark, and that's a universal kit too. I would expect a proper civic turbo kit to cost in the $4000 CDN range.
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'94 Supercharged E36 325is (150,000 original km's)
Mods
-Vortech V9 G-Trim @ ~10psi w/ BOV
-Shortstack headers
-Vortech RRFPR
-255LPH Walbro fuel pump
-TEIN SS Coilovers w/ Pillowball mounts
-Keskin KT1 17x8.5 & 17x10
-Remus full catback
-Authentic Rieger Infinity I body kit
-SMT6 EMS (Untuned)

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Old 12-23-2003, 12:45 AM   #13
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Quote:
Originally posted by djcontra
somehow I have to doubt that figure. I'm sure it can be done, but it wouldn't be a very reliable and worthwhile setup. My intercooler and piping alone is over the $1000 mark, and that's a universal kit too. I would expect a proper civic turbo kit to cost in the $4000 CDN range.
yup, installed is 3g CDN from ultimate racing in markham, i think even for S2K too.

anyways, akira is right too...you can custom make a turbo kit VERY VERY cheap depending on what you get, and who know know, and who does what.

It all comes down to what Thinair said.

BladeRunner...turbos are better both ways, for power potential and long distance since it isnt always running at very high RPM because when u drive on the hwy cruisin..ur out of boost and in low RPM..where as the supercharger runs off the crankshaft so it is spinning as fast as the crankshaft...but it may depend on different supercharger types..i dont know much about them so i cant say. A turbo system would be my choice, install isnt something you cant do in your own home given the right tools and equipment AND knowledge, but both ways...supercharger or turbo TUNING is the key to reliability. A good tuner, means a good running car...but also, the install DOES matter..make sure all piping is properly fitted and seated tight, because a lot of pressure goes through there...and it isnt fun fixing a vacuum leak in the FI system..beleive me, Me, Randy, James and Eric spend a good 30min in not so warm weather trying to fit his piping back after it came off because of the colder temp compared to DC at high boost..anyways thats off topic.

Like i said, it depends on your choices (thinair listed them)...either way, find a GOOD TUNER because that is mainly what will determine whether u run into little, or a lot of problems.
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