5sfte? Options

[mycelicagt]

at a local junk yard i found a late 80s gt4 and the guy said for $250 i can take the manifold, ct-26 turbo, downpipe, and oil pan i already have the 2 bar map sensor off that car........i have a boost controller and a stock GST BOV, im gettin the oil feed and drain lines as well as the coolant, bending my own intermediate pipe (turbo to intake manifold) and actual intake, do i need to do injectors, intercooler, timing setting, all that for 5 psi?

[NuclearHappineS]

There's a good chance that turbo needs a rebuild.
You need some 360 cc injectors
It would be good to get an intercooler, even if a small one either that or get a water injection kit

If you don't have an intercooler the car will heat soak really bad. So it'd be kind of like a nitrous car... (like don't use it for more than 15 secodns type of thing, and let it cool down for 15-30 minutes between runs)... However if you ahd an intercooler you could really drive the pants off of it.

I know you want to do this cheap, but you wil not stop at 5psi, especially since you're a DIY kind of guy and will keep throwing parts at it. The other thing is, it may not boost lower than 7-8psi because of the spring rate in the CT26 wastegate actuator. So in building it, build it for that much psi, because without any intercooler pressure drop you may not see as low a psi as you think

(My setup was identical to yours Gen1 3sgte manfiold/ct26/dp, vortech 8:1 FMU, 1 bar map + check valves, 2.25" pipe straight to the TB, custom 2.25" exhaust and cold air intake)

The car was boosting 6.5psi with no controller. so thinking you will get 5psi out of it will not happen unless you have an exhaust that is choking you 1.5psi worth of air...