Turbo or 3.0 Stroker?

[e28forlife]

Also note that with the TCD kit, you don't need to run MS. They tune the current control unit, saving some headaches.

I also reckon you could build your own turbo kit, with a flashy top-mount turbo and front mounted intercooler. This could be done on the cheap as well.

And if you are building a 3 liter stroker, I would suggest staying near stock compression ratio, unless you are sure you will be going FI soon. It would be rather disappointing to put all that effort into the m20, then leave some power on the table while counting on turboing it down the road.

[BoostMW]

turbo that jernt, I think alot of people (average car owners)are intimidated buy turboing and don't know how simple it is to do under 12psi and would rather just stroke an engine and spend a fortune on making a 200hp car. I don't see spending 3k -5k for .5 displacement and 40-50hp. But it is just bragging rights in the end.

This cost me 1200 do it my self,including studs,injectors rrfpr,manifold,etc>289whp at 8psi wastgate. Stroking cost way to much for final outcome ,but i really want to buy a car that someone else has stroked and took the loss on,lol

[JMil86]

I would say for a daily driver go for N/A for sure.

[asubimmer]

I would say for a daily driver go for N/A for sure.

meh I wouldn't agree w/ you there. A turbo isn't gonna eat as much gas as a stroker. That is if you stay out of boost, ie DD :)

[diegom6]

Make it interesting. Im always for N/A. Takes more skill to make power without forced induction. Thats my opinion so dont get upset if you have FI.



Mariano

And deeper wallet ;)

[Moto-Mucci]

then when the time comes, supercharge it instead. you can still use your existing exhaust and headers, you just need to sort out the mounting of the charger and inter cooler piping. the power delivery is more like an N/A motor too

I agree with der affe. If the issue is not being able to choose between the eventual power of a turbo or the instantaneous power of an NA motor - then why not supercharge?

You can get all the power of a snail instantaneously like an NA motor. You also don't have to buy and install a new manifold, downpipe, wastegate, oil pan, oil lines, or intercooler (you could intercool - but a SCer wont make as much heat as a turbo since it's not exhaust driven.) On top of all that - less piping.

Grab a Benz Kompressor and make friends with a fabricator to make you some brackets. Maybe there's even a dece kit out there already. I'm new to the bmw scene so I don't know yet. Maybe someone can chime in about this.

If you're completely against supercharging, then I'd recommend piecing together your own custom turbo kit. I'm against handing my car off to anyone unless I absolutely cant do the work myself or cant teach myself how to do it in a moderate amount of time. You'll gain WAY more knowledge about your set up by piecing and putting together your own kit. If anything ever breaks you're also much more likely to know how to diagnose and fix it yourself. Ontop of that, you can do it for 1/2 the price - or less even. Both my VW's had custom turbo kits that I pieced together for under $1k, and after a couple times, I could tear everything down in about 45min myself. Like someone said previously, it's a lot simpler the most people first think.

...just my long winded

[ILoveMPower]

Stroker fo sho, you just can't compete with the feel or the sound of a built BMW inline six

[yberther]

go read through the e30tech.com forced induction threads for a bit...

you'll want a turbo real quick :)

[LowR3V'in]

Hello.
I'm sure everything has
been covered by previous posts, but
my opinion is you should turbo charge if looking
for a relatively fast e30, compared to a sllooow N/A 3L stroker.

What is a realistic power output for the stroker? Honestly.
160hp? Maybe 180 with all the bolt ons?

Again, from personal experience turbocharging will put you
at least as fast as the S50 swapped guys.

For example: 7psi walks a s50 e30 all day.
Or you could be as fast as a high end sports car
with acouple clicks on the boost controller.

and FYI 7psi is NOTHING for the m20. I experience
20psi on the street. Take it as far as 25psi.

Something to think about.
Perhaps get a ride in some locals turbo m20.

Anyone from san diego?

[LowR3V'in]

If the issue is not being able to choose between the eventual power of a turbo or the instantaneous power of an NA motor

Perhaps i'm not understanding what you wrote, but
it's extremely misleading.

The motor will make more power EVERYWHERE
with a turbo, regardless if it's under psi. Please, correct me
if I'm wrong.

Perhaps you are thinking of lag?
Then I'm sure that's it since it might fee slow off
boost by compression when it goes from 150hp to 450hp. :)

[Moto-Mucci]

Perhaps i'm not understanding what you wrote, but
it's extremely misleading.

The motor will make more power EVERYWHERE
with a turbo, regardless if it's under psi. Please, correct me
if I'm wrong.

Perhaps you are thinking of lag?
Then I'm sure that's it since it might fee slow off
boost by compression when it goes from 150hp to 450hp. :)

Yes, that's what I was referring to - waiting for the turbo to spool vs. the instant throttle response of the stroker.

[808BMW]

You'd rather go from 150hp to 160hp vs. 150hp to 300hp?
A turbo doesn't make you lose power down low, if anything you make more torque due to having a pinwheel blocking your exhaust.
I'd rather wait for something than wait for nothing.

[chameleonleather]

Turbo wins! After a lot of thinking and crunching #'s boost is the way to go. The build will start tomorrow. Thank you for everybody's input.

[AL GReeNeRy]

I am a huge fan of NA motors, so my vote went for the stroker. I like the power delivery, and I am an autocross guy. Either way, though, it would he hella fun.

yo indiana, you from cali?






i still vote for stroker first

[Pinepig]

I would say for a daily driver go for N/A for sure.

I daily a turbo deuce at a bar and a half ( 23psi ). It's going on two years now on a stock m10 ( who knows how many miles are on the motor ) with a cometic head gasket. There is nothing wrong with running a turbo on a daily, if you use MS, do the mod to the board so you can run an the electronic boost controller right in the MS interface, I used the N75 out of a VW 1.8t motor and it works fine. The beauty of this setup is that you can ramp the boost slowly so it doesn't come on like a freight train killing axels, trannys and rear ends and is also easily usable in the twisties. Gas milage does not suck unless you are on it all the time, I got 25 in town on my last tank and I raped the shit out of the car on more than one ocasion during that tank.

Spending big money on an NA setup has always been a looser in bang for the buck, you're talking about 6k, I know danm well I could get 400 reliable hp out of an m20 with 6k.