So I am on a 100% stock long block. I am running e85 and I am currently at 28psi. I want to get into the 120+ trap speeds on the stock 9 turbo, currently 12.03@117.33. I am at about 380hp/380tq, Virtual Dyno on Mustang Dyno Setting.

So I would like to know if people are pushing the boost that far on stock head studs. I am really looking for input from people that are doing it.

I am going to turn the boost up to 30psi this weekend, and try to get to 32psi next weekend, but I just wanted to get some feedback from people doing it.

Mods:
Evo RS
AEM EMS
AEM 5bar Map
GM AIT
FIC 1100cc
Walbro 255 HP(moded)
Evo9 Turbo
AEM WRX Intake -- Jerry Rigged but looks good(no maf because SD)
Nesei LICP/UICP
Titek O2
3" TBE w/Test pipe
Triggerdisc
Halman MBC
QuarterMaster Twin
Solid Engine Mounts
Gates Timing Belt

Stock Fuel Lines
Stock Fuel Rail
Stock Fuel Regulator
Stock Cams
Stock Headstuds
Stock Bottom End
Stock Crank Pully

 

I spike to 31, falling to about 27-28, stock head, headgasket, headbolts.

 

In this part of the world, it takes about 320whp on a Mustang Dyno to trap 117ish just to give you a reference for your virtual dyno numbers vs reality. How many pounds of boost you run has no direct correlation to what the stock motor can handle. Different turbos flow vary in lb/mn of airflow. A given turbo at X amount of boost flows X lbs/mn. I would throw some ARPs in the head before you go any higher though. 28psi is pushing it for stock headstuds and you may make it to your 32psi goal but your head gasket might not.

 

32-33 psi with meth, headstuds are waiting to go in with S2 cams. Been running meth since 2008 on stock turbo and BBK Full.

 

Change the cams and don't boost as high and you will get your goal.

 

I am not super worried about blowing the motor up. Pistons and rods already on order. I just need to source the rest of the parts for a full motor build. I am doing a standard rod 10:1 motor. I would like to pull the motor over xmas, just because I have the free time to work on the car. The car currently has 120k.

Also I do realize that your tune is what breaks stuff. So in my case, the car is making about as much power as it is going to make at 28psi. I am going to turn it up to 30 this weekend, and keep an eye on things, and next weekend make the jump to 32psi.

On this forum, most people say to only run 28psi, because of head studs. So that is why I wanted to see how many people are running more boost on stock studs.

 

Kinda off topic, but OP, when you convert your AEM logs to text, what sample rate are you using? U should be using 20hz.

Next, I know you guys like Mustangs dynos, but when it comes to VD, the "mustang" setting isnt as good as the "dynojet" setting and Ill explain why.

When testing, building VD, Brad set a goal to make the program duplicate a dynojet dyno. Also, when Brad and I were setting up the "mustang" setting, we noticed that all the Mustang dynos we tested were all over the place.

So basically VD is made and tested to duplicate a Dynojet and it does a great job of that (all testing has showed it reads within 1-3% of an actual dynojet.)

Basically what Im saying is that the "dynojet" setting is tested and verified. The "mustang" setting on the other hand, is not as tested and verified.

Also, everyone that uses VD, uses the "dynojet" setting, so you may want to too, so it easier to compare your numbers to everyone else.

A piece of information, I ran 116-117 traps with approx 390hp, "dynojet' setting.

**BTW, I work very closely with brad in the development, design and testing of VD.

 

i ran 32psi on stock turbo on 93 and meth for a while.
stock head, headbolts and block

 

Stock head studs I'm sure will hold up for a certain length of time, but they're stock so you should expect stock results. On my 2G with a 3076R@25psi lifted the head and toasted the gasket. It also had 115+k miles. I'm sure lower mileage or "less beat on" Evos will take to higher boost better, but scientifically the material is inferior to ARP's.

They're also only $100, no one wants to deal with coolant everywhere and in their oil. So for the little time and money it takes, they're a worthy investment IMO. Unless ballen is your hobby then I guess you can just get a Buschur LR2.0 when the stocker goes kaboom.


Also, on STM's Mustang Dyno, Cammed/E85'd Evos typically make around 380ish give or take and trap over 120+. So, the MD setting is definitely off haha. Who cares though, the dyno graph and numbers mean nothing if you can't make a nice number light up at the end of the track

 

just curious what was your 60 foot with the 12.0 time

 

Im also running 30psi, holding 29, and 27 up top, on the stock motor/etc. I wouldnt push it anymore than 30psi, tho...

just my .02

 

PM awddyno. He has done some amazing things with the factory long block.

https://www.evolutionm.net/forums/ev...ock-turbo.html

 

i ran between 30-34lbs for over a year on e85. stock motor aside from cams. just now am i finally building the motor and not because it blew...because i want to run 40

 

at least a couple hundred WOT 3rd and 4th gear pulls and at least another 100 1-4 gear pulls

 

1.8 or 1.9 I dont remember 100%, I will try to track down the timeslip.