im not planning to tune it with 3psi as it will only be temporary. Im building a quality bottom end to put 8psi or more on
do you know what tunning devices I should buy? would a wideband power commander work? thanks
If it is temporary, I would not drive WOT on street like that. All it would take is a small amount of boost creep and you can kiss your head gaskets (or possibly more) goodbye.
As far as tuning goes, your going to either have to get a custom dyno tune done or pick up a piggy back (tweecer, pms etc. ) or a standalone (Megasquirt, Fast etc.) as well as a wideband 02 sensor. In the short run the custom dyno tune is going to probably be cheaperâ€¦.but if you want to learn how to tune yourself, or tweak your tune for bigger changes down the road then you may want to look into the latter option. Simply buying a wideband will do nothing except tell you what your AFR's are.
On to the bottom end. I would strongly recommend against putting a quality bottom end into a stock 5.0l block while running forced induction unless absolutely necessary. If at all possible, stick with the stock rotating assembly and do a rebuild with what you have. If you haven't already heard it before, the stock block itself is the weak pointâ€¦.and they tend to split from the mains up to the lifter valley when pushed beyond their limit. When this happens, its quite possible it will take the rotating assembly out with itâ€¦.so you can kiss that goodbye too.
I forgot to mention that the car made 208rwhp by 4500rpm and 282rwtq by 3200rpm and it has a 1985 four banger T5 which makes it feel like it has a gear
With a turbo setup you want less gear, not more. A typical good starting gear is 3.27's out back when combined with a 26" tire. It helps load the turbo's quicker (even more crucial if you have oversized turbo's) and will allow you to stay in your powerband a bit longer. That 4 banger tranny is going to need to get a serious upgrade. Even the stock 5.0 tranny's are not up to the task of the amount of horsepower and torque a turbo setup puts outâ€¦.and it will fail on you at some point in time.
I also have a edelbrock performer upper/lower attached to bbk 70mm throttle body lying around, ready to drop in, is it worth bolting onto the stock motor? I bolted it up to my last stock moto without turbos, it made no difference
Absolutely put them on. While the stock throttle body is likely to not be a restriction with your setup, I'd put it on regardless. The upper/lower will allow you to produce more power with lower boost levelsâ€¦.and the stock lower is a big ole butt plug in the airflow between the turbo's and the engine.
What sized turbo's are you putting on?