Amount of Boost With a Stock Head Gasket?

[turbowop]

And yes I know what the B&M does

Then why the hell did you get it? With a 255 you're going to need to *lower* the fuel pressure at idle. Get rid of that POS and get a nice 1:1 rising rate AFPR like an Aeromotive.

 

[1fast97gsx]

Then why the hell did you get it? With a 255 you're going to need to *lower* the fuel pressure at idle. Get rid of that POS and get a nice 1:1 rising rate AFPR like an Aeromotive.

Maybe he didn't always have a 255? Maybe he got the afpr before the pump? There's no need to lower pressure at idle unless the 255 is rewired.

 

[TSIfreek]

I agree with turbowop with this thread. How can someone that has spent over 4k on mods and engine work not no about the head gaskets capability?? For how much I know I should have a 10 second car but I dont WHF?? Money cant buy brains I guess

 

[turbowop]

There's no need to lower pressure at idle unless the 255 is rewired.

That's sounds funny coming from a guy who doesn't know how much boost he can run on his own car's setup.

How's those fourth gear pulls coming? :laugh:

 

[psychlow]

That's sounds funny coming from a guy who doesn't know how much boost he can run on his own car's setup.

You can use a CommandFlo to control overrun by raising your base FP and tuning it out with a SAFC.

Once you surpass the overrun pressure while at full vacuum, you'll get a 1:1 linear curve which you can tune with.

Nice car, btw.

 

[1fast97gsx]

That's sounds funny coming from a guy who doesn't know how much boost he can run on his own car's setup.

How's those fourth gear pulls coming? :laugh:

You're an idiot and explain to me what was false about my statement? Exactly, nothing.

The only reason I ask how much boost I can run is because I don't want to be out running around on back roads all day adjusting shit again and again until I have it right. I'd rather have an idea .. set the controller at that number and then tune from there. No point in setting boost .. tuning ... raising boost ... tuning ... raising boost ... tuning .. lowering boost .. final tuning. Why not just enter the boost ... tune .. do a pass .. final tune and thats it? Seems far less dangerous to others on the road, less stress on the car, and less time and gas money wasted. But thanks for all your helpfulness in this post .. from all the things you have typed so far I don't think you have helped anyone out one bit, so why even post? Getting a balpark boost number other people have succesfully ran on pump gas with a similar setup is really not a bad idea.... I remember seeing a sticky on these boards with peoples safc settings for a given turbo, injectors, and boost level. Why is there a STICKY for that if it's totally pointless?

 

[1fast97gsx]

That's sounds funny coming from a guy who doesn't know how much boost he can run on his own car's setup.

How's those fourth gear pulls coming? :laugh:

And how do you only run a 12.2 on RACE gas on an FP green!?!?!? People have ran those times with a 16g . :laugh:

 

[turbowop]

And how do you only run a 12.2 on RACE gas on an FP green!?!?!? People have ran those times with a 16g . :laugh:

This is true, but galants with similar mods as DSM's usually run a little slower. Fastest green to date that I know of in a galant has been an 11.6 and that's with cams, intake, etc. My car is full weight minus only the 4WS. Regardless, there's no reason I should have to justify my times to a guy who has *no* f*cking times posted. Is that because you don't know how much boost to run? When you go to the track do you have to ask others how to launch your car also?

As far as turning up the pressure and then tuning it out with an AFC goes, I wouldn't go about it that way. All you're doing is lying to the ecu more which causes more tuning problems in the long run. Why do you think the keydiver chips came out? So that we could get closer to having our settings on the AFC closer to zero which keeps you in the correct timing maps. AFPR's aren't even that expensive when you consider that huge list of mods. Do it once and do it right.

 

[1fast97gsx]

Regardless, there's no reason I should have to justify my times to a guy who has *no* f*cking times posted. Is that because you don't know how much boost to run? When you go to the track do you have to ask others how to launch your car also?

I can scan a 12.8 @ 103.5 slip on a small 16g with 450s and a sidemount for ya. Or a ton of 13.0s... full weight as well.

As far as turning up the pressure and then tuning it out with an AFC goes, I wouldn't go about it that way. All you're doing is lying to the ecu more which causes more tuning problems in the long run. Why do you think the keydiver chips came out? So that we could get closer to having our settings on the AFC closer to zero which keeps you in the correct timing maps. AFPR's aren't even that expensive when you consider that huge list of mods. Do it once and do it right.

Ageed there.

turbowop - nice car btw.

 

[FASTSPOOLINGST]

I know this thread is 4 months old. After reading it, I just have to say, it was very entertaining.

BTW: Currently I am running 24psi on pump 93 with a 50 trim on stock internals, stock HG, and stock head bolts. I am getting 0 knock in 3rd adn 4th gear pulls. This is my daily driven car too. I have ARP studs and a Mitsu MLHG on standby for when it does blow, but so far it's been holding well.

My answer to your original question is....who knows? nobody, like the one dude said up above, there is no answer. There isn't a group of scientists that did studies at mitsubishi with different turbos and stock components to see when they would blow out. It's a hit and miss game...luck you could say. If your tuning skills are good and you are keeping combustion temps down and getting 0 knock. You chances are a lot better.

I also agree with the one dude. Why put all that money in a motor and worry about the head gasket.

And....ever heard of this...nothing ventured nothing gained. Do you think John Sheppard was scared of blowing his engine up, or never blew a HG while going for the record books. Not only him, but the other top dogs on the 1/4mile times listing too. You have to take a risk sometimes if you want the best results. Go for you goal man, not what some book or some one tells you to do. You only live once, so go for it! Once again sorry for reviving the thread on all of you.

 

[Larry L]

I can scan a 12.8 @ 103.5 slip on a small 16g with 450s and a sidemount for ya. Or a ton of 13.0s... full weight as well.



Ageed there.

turbowop - nice car btw.

I call bull shit on that one...The fasted I've seen small 16G on 450's run is mid 13's . You must have an exceptionally fast car or on the button.

I have several friends with Evo B16G's and 660's on DSMChip that run 20 psi and crack 12.9's

 

[Lee'sGSX]

I call bull shit on that one...The fasted I've seen small 16G on 450's run is mid 13's . You must have an exceptionally fast car or on the button.

I have several friends with Evo B16G's and 660's on DSMChip that run 20 psi and crack 12.9's

Man are you kidding me!!!!! mid13s........12.9s... My wifes full weight talon ran a 12.9 on 19psi 14b! Buddy of mine ran 12.3 with his evo 16g, other buddy ran 12 flat with big 16g! Hmm dunno

 

[CanadianTSi]

I call bull shit on that one...The fasted I've seen small 16G on 450's run is mid 13's . You must have an exceptionally fast car or on the button.

I have several friends with Evo B16G's and 660's on DSMChip that run 20 psi and crack 12.9's

he was only trapping 103 which tells us he wasn't really making that much power...It was good driving that got him into the 12's...

 

[TalonJohn94]

How are people looking at Chrono's mods?
There must be something wrong with my viewer.

 

[bastarddsm]

Eat a dick man .. I had a 16g last year with all supporting mods for that. I rebuilt the motor with forged internals, swapped on a 1g head....why mess with a little 16g then? Oh and I did EVERYTHING myself. Not many people on here have this setup and post the boost they run, and I don't want to keep going higher and higher without having an idea where the max boost is.

Besides ... who on here as my EXACT setup and has posted their boost numbers? Ok so how am I supposed to know? Ignorant people like yourself should not post useless information like this.

ya, and how long did it last? exactly! haha

 

[GPTourer]

BTW: Currently I am running 24psi on pump 93 with a 50 trim on stock internals, stock HG, and stock head bolts. I am getting 0 knock in 3rd adn 4th gear pulls. This is my daily driven car too. I have ARP studs and a Mitsu MLHG on standby for when it does blow, but so far it's been holding well.

Is that the original gasket, or does that matter? My stock gasket let go from 18psi on an EvoIII. I have since replaced it with another stock HG but with ARP studs. Maybe its my tuning, I don't know - but the next step for me is to get an AFPR, tune for better timing and go from there. YMMV.

 

[LandoAWD]

The next person that responds to the flaimbait posts from June will be banned.

 

[L2RTSiAWD]

I'm locking this anyway.

If you have a question you can start your own thread this one has too much crap to be of any use anymore.