1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

A buddy of mine just picked one up as a beater for 1000 bucks...Mint condition, needs a clutch, but other than that its clean. IHI-RHB5 turbo, intercooled...Factory set to 7 psi...What would it take to take up the boost to 12 psi?

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

I've heard of people upgrading and running close to 20 psi on the stock internals.

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

Just get a zombie chip and walbro, then boost away.
Also might wanna get a bigger turbo cus the stock one
is way too small.

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

Hybrid your turbo with the larger ihi rhb5. Get abit of power from that without having to bust out the JB weld.

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

I just so happen to have the hybrid parts laying around from the t-bird ihi ;)

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

Literally all it would take is a boost controller, but you'll bang off the fuel cut when the ECU reads too much air flow. A chip will take care of that, but it's a rough solution.

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

i hear they can do a lot stock, something like double the torque? but don't quote me on that.

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

I don't know all too much about first gen performance but here is a link you could show your friend: http://forums.probetalk.com/showthread.php?t=1701070069

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

That guide was written for the non-turbo 2.2 liter Probes by someone who has never owned a turbocharged Probe.

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

And how much would you want for those parts shipped to Canada?

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

My friend had a '90 Probe GT turbo, same thing basically, he had a 2.5" turboback no cat, zombie ecu, a cone filter, a Spec stage 3 clutch and a boost controller and he was running 16 psi running consistent low 14's (14.3@100 best) on street tires. He was running toluene in it and was ------- around with the timing like a dumbass and pretty much cracked a piston in half..but those motors are torque monsters..with that tiny ass turbo you could roll into second gear and smoke the tires.

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

there's really only one way to find out >:D

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

Stock fuel cut is either 12 or 15 psi, I forget. There are a couple rednecks locally who put RFLs on stock ones, crank the boost, and drive around every day like real asshats.

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

It cuts out at roughly 12 psi, depending on actual airflow. Blow-off valves on Probes are a bad idea due to unmetered air ------- up the air/fuel mixture. :8

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

porkchop, whos car?

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

Cam (Red Crustang, GF haf some Tig-Ol Bitties.(o)(o) :y

Re: 1989 Mazda MX-6 GT Turbo - Can it handle 12psi on stock internals?
 

yup some big tittys