when you push 30 psi thru it post the youtube video of the head gasket blowing/head blowing up/piston through the oil pan, i wanna see destruction!!! honestly tho, even a supra twin turbo w/ thicker cylinder sleeves and forged internals cannot go above 22 psi w/o rebuilding it every 5 wide open throttle runs, i doubt seriously that a stock ford block could take that much psi. after completely rebuilding the internals and have everything setup for large boost i wouldnt go above 20 psi. stock internals i wouldnt go above 8 for durability, the 10-12 psi guys will be rebuilding real soon i can almost promise you that.
lol, a supra twin turbo could go above 22, it would just blow hot and wouldnt be efficent and would probbly knock... hell mitsubishi's 2.0 turbo charged 4g63t engine stock is like 15 psi, i have friends that bought them cars stock on side mount innercoolers running 20 pounds not doing a thing to it besides poking a hole in the wastegate line because they were to poor to buy a 7 dollar boost controler, hell i got a video ill upload of me and my friend boosing one of those motors to 30 pounds before fuel cut lol.
when we had that motor a 2.0 it ran 30 psi lol
had the following mod list
aem fuel rail
1000cc injectors
aem tuned of course
t/3 t/4 70 trim
kaisenspeed exhaust manifold
cometic headgasket with studs
stock bore
3 inch exhaust
areomotive afpr
and brian crower 272 272 cams
new setup is a 2.3 stroker 288 288 cams gt40r magnus intake manifold and a few other toys, ill snap some pics next time i go up there.
for now this is about 4 months ago after the 2.3 stroker kit was put in and we were messing with the 5500 2 step launch shooting fireballs out
got some videos of us racing streetbikes also, gotta dig em up...
i gotta say the mitsubishi 4 cyl turbo motor and fords 2.3 turbo motor are possibly the best imo.
e85 is better. If you want to make big power on a pump available gas. I know of people putting down over 500hp running e85. And i seen a few volvo 5cyl over 1000hp on e85. Ive got 1000cc injectors in my car and ive got a ecm that i can map for e85.
Op. stock high cr motor i wouldn't go over 5psi. If its a svo engine you can run more. We are running 19psi in our bronco II but its got supporting mods
If you plan on gettin con rods then id suggest at least getting bigger exhaust valves and a cam too if you want to go for 20+ psi. you wont get to 30 psi till alot more things are upgraded cause you will break things
you need to get a video of your volvo running man i wanna hear that beast!!