There are a few guys running about 20 psi with head studs but it is commonly accepted that 15 psi is safe. After I get head studs, I will have no problem at all running 20 psi on my setup. And as for a 6.9 over a 7.3 there are pros and cons. The 6.9 does have thicker walls but 20 psi wouldn't affect the block anyway if you ask me. The only issue with the cylinder walls in a 7.3 is cavitation. But if you build a 7.3 you can have the turbo rods and pistons which are stronger that their 6,9 counter parts.

And as far a your ATS airbox, you could just replace it with a cone filter setup and you would be good to go.

 

I was Considering head studs but with a intercooled setup, who needs over 15 psi anyways? I am getting 7-8 psi empty now, i will post results after i turn the fuel up. I have the gate at 13-14 psi so when it gets a load, it wont overboost. I dont see why I shouldnt get 230hp? Syco got 205 without a ic.

 

ok i have been out of the loop when did sysco break 200 rwhp

 

Read his sig, I thought he got 205??

Edit: my bad, my bad, he got 186, maybe I might break 200 hp then.

 

1993 F-250 SC 4X4 7.3/5spd/4:10 ATS WG turbo @ 12psi, 3" DP 4" straight exhaust, 5" stacks, Hypermax cowl induction, IP up 3 flats, typ4 BB injectors, GPR LED mod, Pyro/Boost guages-186whp 363wtq @ 10psi
1986 F-250 4X4 6.9/T19/3:55 Soup bowl mod, straight pipe
1967 Mustang 351/4spd
2006 Jeep Liberty 3.7/AT (Wifes ride)

hers his sig off obn

 

heres his vid
1993 turbo IDI on the dyno - YouTube

 

Yep another nice looking Idaho truck.

 

15 psi should make decent power but I guess I'm the type that knows if there is more power to be had that I will go after it. But I think you will be well over 200 hp anyway IMO.

 

if you do,there will be a new found respect for just an N/A IP.
it took Heath a set a Moose Injectors + the hot Moose Turbo IP to find these numbers remember;


https://www.ford-trucks.com/forums/9...torque-rw.html

if you get the same with a banks + intercooler + stock BB codes + stock DB2831-5013/5028 N/A ip,that's rated to deliver up to 185hp,then you'll prove one thing;
efficiency trumps rolling coal. good luck!

 

Oh ok. I know my IP isn't as good but did heath have a intercooler? Not trying to be smart, honestly wondering.

 

no i don't think so.it's the the sticky thread on oil burners that's listed as "dyno with moose " etc. if ya want to ask him any questions.
this is why i say if you come close with your lower fuel setting ip,it will really look great for the efficiency of an intercooler,cus it took him large amounts of fuel to hit it.which is of course is not an issue on a play truck,or occasional driver even.but lets say i wanted to pick a truck that got 200hp at the wheels,driving a truck to make $ with.i wouldn't be picking the one "done via fuel" for 20k miles per year @ $4 per gallon.

 

I think Heath is making more power than he is reading. I have found some dynos where some mostly stock trucks have hit over 200 hp and a little over 400 lb-ft. The torque isn't quite as hi but the power is there. And as for the intercooler iirc he doesn't have an intercooler. IMO an intercooler would make a lot of difference on his truck. I think the turbo at 15+ psi was superheating the air. But I do think the power is there to be had.

 

I plan on taking my truck to a mustang dyno, I read that the power reads higher.

 

To me nos is better it makes sense I think heres my theroy.... on a gas you can control the point of ignition cause the spark sets it off at the same point each time. On a diesel though you cant with power adders altering the explosion and fuel makeup and propane and methanol are more volitile than diesel fuel so they can go off at any point of the compression stroke they are very moody and make big problems possibly. I am not saying my theory is right and i know lots of guys use propane and methanol but you see way more spraying nos and in way larger shots to the reason is it is more user and point of ignition friendly. Also lets look at this factor to what does propane do with your egt's they go up more methanol helps but only if you do water with it. Nos will net you more power while stopping that pyro when you induce it into the mix. I personally saw a 7.3 powerstroke with stage one injectors a garret 38r turbo and valvesprings got iirc 240thousand plus miles and its running powder metal connecting rods which the cardinal rule says dont exceed 400hp at max with i think he made like 350-420hp with that. Well a guy who was spraying on his truck took the hose stuck it up the intake right infront of the turbo ran the hose into the cab had bottle in passenger side of the truck mentioned. The truck on his last pull the guy turned on the bottle the numbers were 566hp 1006tq and that was with that crude setup he did in 5min im sold on nos. Just my theroy and 2 cents not poking anybodys buttons i hope

 

My take on a Mustang dyno is that they sometimes do read lower on gas engines but read a bit higher in our diesels cus they properly load our engines as opposed to inertial dynos which have a set load. That is why I would think they read higher on our trucks. But ya go for it. I really wanna see what your truck does with the intercooler. It will show how much these engines really need them. When do you plan on dynoing it?