Unnecessary Boost needed (Turbo or Supercharge)

[Nickse30]

what do you guys think Turbo or Supercharger?

I love that you dont need to change stock internals, ppl are running 20psi on stock internals!! so turbo would be easy as supercharger. I have a new rotrex SC sitting at home wanted to put it on my e30 m3 s50b32 but she already has over 350hp and the GT86 Aero is lacking power. It would be the cheap solution for me but im contemplating to just save up for a turbo kit, ill get more power and that sick subaru sti sound. But SC will give a better power range as there is no lag and all the car really needs is 100 more ponies.

What do u guys think what do you knw what have you done fill us in

[Wo6M]

20psi on 12:5 compression with stock internal?
Seems like a recipe for disaster.

[Nickse30]

Originally Posted by Wo6M

20psi on 12:5 compression with stock internal?
Seems like a recipe for disaster.

Thats what I thought but check this out, its on this forum too.
If it was my car I wouldnt go past 10-15psi deff would not boost 20psi of the bat but its been done and holding well with 521hp. all u really need is 300whp in this car and you'll b golden

http://www.ft86club.com/forums/showthread.php?t=19206

[FRiSson]

The car lacks low-end torque. For that reason, a supercharger is your best option.

[Opposed]

Originally Posted by FRiSson

The car lacks low-end torque. For that reason, a supercharger is your best option.

You mean "roots" or "twin screw" supercharger. A centrifigul type supercharger will not give you the type of torque you are looking for.

[Opposed]

Originally Posted by Nickse30

Thats what I thought but check this out, its on this forum too.
If it was my car I wouldnt go past 10-15psi deff would not boost 20psi of the bat but its been done and holding well with 521hp. all u really need is 300whp in this car and you'll b golden

http://www.ft86club.com/forums/showthread.php?t=19206

Their car is over 600whp now

[chutrain]

Nice to see another E30 M3 owner on here.

I would say go with a twinscroll turbo setup for pretty much the best of both worlds. JDL has one that they are selling. Do your homework on the different setups and see what your goals are.

[Nickse30]

Originally Posted by chutrain

Nice to see another E30 M3 owner on here.

I would say go with a twinscroll turbo setup for pretty much the best of both worlds. JDL has one that they are selling. Do your homework on the different setups and see what your goals are.

I completely agree a twin scroll set up would give you the best all around power and with a proper tune I think the GT86T could b an epic drift car

Yup I got the GT86 cause it remindes me of my e30 m3 when it was stock. There both abt the same weight, both 4cyl with abt the same power, both rwd with LSD and both legendary cars
Now iv done an almost complet restoration and put the 99 e36 m3 Euro motor s50b32 Dual Vanos 321hp with the 6 speed. She is very very very fast!!! and I have that Rotrex C38 i mentioned earlier but just waiting for the right time to set her up. I knw this is a 86/FRS/BRZ pace but gota show off the hard work i been doin and im sure u can appreciate it.

[Whitigir]

This is on e85. E85 allows you to run approximately 7-10 psi more over 93. But very impressive though. 600 hp with e85 or race gas. This should be around 400-450 on 93.

I like upercharger more, for it simplicity of no manifold needed, no exhaust routing, and lowend torque. But we sacrifice 15-30% of it capability for that instant torque.

Turbo = lag, but can get full potential of the car
SC = no lag, but up to 30% power cut. Because it runs directly off ur engine

[Turbowned]

F**k it, throw the Rotrex on there! I was gonna go S/C myself but I have a brand new Garrett GTX2863R sitting around, so I figure why not save the thousand bucks and go with the turbo?

[Nickse30]

Originally Posted by Turbowned

F**k it, throw the Rotrex on there! I was gonna go S/C myself but I have a brand new Garrett GTX2863R sitting around, so I figure why not save the thousand bucks and go with the turbo?

Thats was my first thought but then looking at the motor and researching the SC kits iv come to the conclusion that because in both cases u dont have to build the motor up to withstand the boost a turbo kit would be the easier way to go. Main reason that thers no space to put this rotex SC of mine. I would have to move the alternator and a bunch of other things to get the rotrex in. Reason being because the Rotrex spins clockwise when u face it. so it would have to be on the same side of the belt as all the other equipment. If you notice in the ready kits they use a vortech counterclockwise SC. this allows easy install and the casing is on the opposite side of the belt between the motor and radiator where there is plenty of space. Usually a SC install would be easy like for my M3 I could have a very simple set up. but as there is very limited space on the belt drive of the boxer motor its a headache. (but it is possible)
Im thinkin keep the rotrex for the M3 and twinscrew turbo the GT86 just have to be patiently collecting my paychecks

heres sum pics of my GT86 Aero

[Sonolin]

Beautiful m3 man!

I'm currently not sure what I'm going to do with my car. Considering just about every F/I choice, LOL. Currently leaning a little more towards either AVO turbo, or Innovate twin screw (@robispec just posted some videos in the forced induction section, check it out!). One of the requirements I have is to retain the driving dynamics of this car, and I feel that the sudden torque surge of a turbo/twin screw might upset that - but I haven't driven either so I'm not sure.

I've heard Jackson racing is also developing a Rotrex supercharger for this car. The after market for this car is just booming

[Pete]

That M3 looks great, you should be proud. :happy0180:

[WolfpackS2k]

I'm leaning towards supercharger (not centrifugal) for that low end torque boost. Superchargers don't make as much power but all I really want is around 300-330hp total. I want the BRZ faster, but not too fast than a lot of modification to the rest of the car is needed for participating reliably in weekend track events.