safe psi level?

[makulit054]

Is it safe to run an sr20det redtop stock internals w/Garrett GT28R dual ball bearing turbo to 17psi? If not what is the max boost a stock redtop can handle?

[Future240]

You could run 17 psi but not on a daily type of thing. I've read and heard stories running psi higher than that on a stock bottom end. I wouldnt advise it though. The max boost depends alot on the tune you have on your sr. I think its somewhere around 13-14 psi as far as safe boosts goes. Someone correct me if I am wrong

[clark]

Is it safe to run an sr20det redtop stock internals w/Garrett GT28R dual ball bearing turbo to 17psi? If not what is the max boost a stock redtop can handle?

the internals isnt' the qeustion in your case. and there is no predefined boost level where your engine will blow up, many different variable.

your headgasket is going to blow before anything, and with higher boost, it's likely that you could lift your head.

get yourself a metal headgasket (apexi, greddy, i would say cometic but a few others have bad expriences on here, i personally have apexi) and arp head studs. it will be a cheaper investment, beacuse if you do blow your gasket or lift your head, you could possibly damage other things.

the metal HG and head studs will give you peace of mind :)

[makulit054]

The vehicle in question has been tuned at 17psi with greddy emanage. I want to make sure before I commit to purchasing the vehicle.

[jspaeth]

17 psi on a GT28 with stock internals and proper supporting mods puts you in the 300-320 hp range........you should be FINE like this

Especially if the car has already been properly tuned.......but before you go upping the boost, you should have the car retuned by someone that knows what they are doing.

Most people on here with experience say stock headgasket is fine for awhile (up to 350+ (?)), but to replace it when you can if you have the head off.

[shmiddy]

dude thats not gonna last to long? does it have head gasket work atleast???

[jspaeth]

dude thats not gonna last to long? does it have head gasket work atleast???


Where do people get these ideas from?

There are plenty of people running GT28 turbos at that boost level/power level with stock motors.....

Assuming you have supporting mods (injectors, good FMIC, etc) and a good tune, I really don't see where the problem is

[driftSTL]

yea man i have an *almost* stock internals s13 black top and a gt2871r (plus a bunch of other stuff blah blah blah) and i run 15 for the daily and 20 when i need to.

car is tuned for that many lbs of boost and i havent had ANY problems with it *knocks on wood*

[jspaeth]

I was tuned by Jeff Evans in PA, who is one of the most well known tuners in the country, and am getting ready to add a Greddy IM, which should bump me up into the 350-360 whp territory or so.

I asked him about the HG, and he said he's "tuned plenty of SRs with stock HG and that much power that are just fine"


Granted, if you constantly run the car hard and beat on it, it probably won't hold forever......

[shmiddy]

^^^ maybe im just a parinoid bastard then

better safe than sorry i always say

[jspaeth]

No you are ABSOLUTELY correct, if I was buying a car like that, I would be worried too.

I guess I feel safer with my own car, since I know exactly how it's been treated the whole time......

[SidewayZ-s14]

I'm running 17psi on my stock s14 sr with out any problems. I mean, i don't run it hard unless i see some guys in their hondas acting cool! :P

[GabeS14]

17 psi on a GT28 with stock internals and proper supporting mods puts you in the 300-320 hp range........you should be FINE like this

Especially if the car has already been properly tuned.......but before you go upping the boost, you should have the car retuned by someone that knows what they are doing.

Most people on here with experience say stock headgasket is fine for awhile (up to 350+ (?)), but to replace it when you can if you have the head off.

this right here, answers your question!
no need to continue the thread..!

close it, before some idiot posts another crazy remark like.. does your headgasket work!!???

[makulit054]

good point gabe14. lol. yeah, this vehicle is tuned with the right mods and vital monitoring system. it has a wide band that is intergrated with the greddy e-01 boost controller. just doing my research. thanks for all the input.