How much psi

old skoo · 08-09-2009, 02:54 PM

whats up guys. i was planning on throwing a blower on my stock s52 and i was wondering how much psi can i run stock without blowing it ?

jjm_240sx · 08-09-2009, 05:20 PM

I am going to guess 7psi with the right fuel tuning. (its all in the tuning)

spoony_prelude · 08-09-2009, 07:59 PM

ive heard anything over 6psi, and your asking for trouble. yes tuning makes a huge difference but even then your reducing te engines reliability by quite a bit.

And before some guys on here with charged s52's come blasting about how theyve had their blown for years. Yes it also depends on how you drive it, if your a conservative driver that likes to play around once in a while, your ok. But if you are constantly beating on it, youll do some damage. Id recommend at least getting a commetic head gasket and arp head studs!

just my 2cents

Jay

black bnr32 · 08-12-2009, 09:16 AM

I'm running 11.5 psi.

old skoo · 08-16-2009, 09:38 PM

hey thanks for the info

Quote:

Originally Posted by spoony_prelude

ive heard anything over 6psi, and your asking for trouble. yes tuning makes a huge difference but even then your reducing te engines reliability by quite a bit.

And before some guys on here with charged s52's come blasting about how theyve had their blown for years. Yes it also depends on how you drive it, if your a conservative driver that likes to play around once in a while, your ok. But if you are constantly beating on it, youll do some damage. Id recommend at least getting a commetic head gasket and arp head studs!

just my 2cents

Jay

old skoo · 08-16-2009, 09:40 PM

what's done to your motor

Quote:

Originally Posted by black bnr32

I'm running 11.5 psi.

black bnr32 · 08-16-2009, 11:55 PM

nothing...hasn't been opened at all

doogee · 08-17-2009, 01:10 AM

How about M52?

old skoo · 08-18-2009, 08:22 AM

Wow ! Lol what are you running to the wheels and what kinda blower you running ? If you don't mind me asking

Quote:

Originally Posted by black bnr32

nothing...hasn't been opened at all

black bnr32 · 08-18-2009, 09:20 AM

~375whp on a vortech V1. Lots of guys do it btw...see bimmerforums! Obviously good tuning and aftercooling is key.

everlast · 08-18-2009, 10:48 AM

BlownM3 on here has been blown for a while, runs higher PSI than the setup was designed, has it tuned for each change he makes and drives the living piss out of it. In fact, he twisted a driveshaft last weekend..

Quote:

Originally Posted by Blown M3

This is what happens when your car hooks up at the drag strip

///tyron · 08-18-2009, 10:41 PM

Im running 18psi with a Gt35r apr headstuds and an mls .140

e30_kid89 · 08-18-2009, 11:36 PM

Quote:

Originally Posted by ///tyron

Im running 18psi with a Gt35r apr headstuds and an mls .140

Wtf? Out of nowhere? Sweet! You gotta be @ 450+ RWHP. Pics? Stock tune?

///tyron · 08-18-2009, 11:46 PM

Quote:

Originally Posted by e30_kid89

Wtf? Out of nowhere? Sweet! You gotta be @ 450+ RWHP. Pics? Stock tune?

I only ran it for a few days, its way too much for the streets. I turned it back down to 12psi for daily. I mean wheel spin in 3rd ftw!

At 18psi i would say i was very close to 500rwhp.

Im on a custom tune, no pics of yet.

Its an
m52
apr2000
head studs
mls head gasket
spa manifold
gt35r
550cc injectors
custom charge piping/downpipe exhaust

i did all the work my self.

black bnr32 · 08-19-2009, 12:20 PM

And I thought our FI scene in Canada was pretty terrible...