Turbo or 3.0 Stroker?

[chameleonleather]

fast but not turbo fast.

[Moto-Mucci]

holy shit. what's that like 150?
What do mildly modded m20b25's usually top at?

[rcfanatic]

Anybody seen this video?

http://www.youtube.com/watch?v=xJO3C0j8F3U&feature=channel_page

He lists some of the mods..

Short list of engine mods:
2826cc, cr: 10.8:1
Crank: 84mm (M52B28), piston: 84,5mm orig. last oversize
216hp and 280 nm @ wheels
Tatech EMS (no AFM, coilback ignition, WB lambda control, etc)
305cc injectors
535i throttle body
Camshaft: dbilas-dynamic 312° lift 12,5mm + dbilas valve spring kit
PPF rocker arms (good up to 9000rpm)
Adjustable cam gear
Exhaust: free flow 2,5 inch (one tube)
Modified intake manifold and throttle body
Lightened flywheel
Sachs Racing clutch

It's "only" 216 whp, but he goes 0-60 in 5 seconds. Isn't that quick enough for most people? Wish he listed how heavy the car is

[Danny]

Hmm thats interesting.

I'll have to talk to you more in depth about it the next time I see you.

[Pinepig]

It's just a solenoid that pulses to set the boost at the wastegate. MS has a flaw in the programming and you can't set it as PSI but as a percentage of open/close time. It works fantastic.

[Danny]

Shit. Misread the quote.

Turbo that bitch.

Also Charlie, details on the N75 please?

[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.

[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

[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.

[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.

[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.

[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. :)

[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?

[yberther]

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

you'll want a turbo real quick :)

[ILoveMPower]

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