How many PSI do you run on your stock motor???

How many PSI do you run on your stock motor???

  • Stock Boost

    Votes: 2 14.3%

  • 9-10 psi

    Votes: 0 0.0%

  • 11-12 psi

    Votes: 3 21.4%

  • 13-14 psi

    Votes: 4 28.6%

  • 15-16 psi

    Votes: 1 7.1%

  • 17-18 psi

    Votes: 3 21.4%

  • 18+ psi

    Votes: 1 7.1%
  • Total voters
    14
T

T-Trac

New member
I'd like to see what pressures people have been running on their stock motors.

Please respond as follows

Year, Model, miles on motor
PSI
How many miles at this psi
mods
failures
comments

You can consider changed headgeasket as stock motor, just dont forget to list it as a mod. For all of you who have modified bottom/top ends, this poll is not for you.
Lets see what we got!!!

mine:

88, 165, 100,000
stock(6-8psi)
Its been at this pressure for the whole 200 miles that I have owned it.
intake exhaust upgraded turbo
none yet
sweet car, want to make it faster, want to know whos running what without a rebuild and what problems they have had
 
C

cardude

New member
165
205000 miles :doh:
running 11-12 psi for 100 miles now maybe
everything is stock except boost guage and mbc
i love it and will go for more after rebuild and fuel.
 
R

reaper0995

New member
been running 14psi from 120k miles to 145k miles. was going strong until i blew HG at fuel cut in 5th gear... (cold day= fast boost, oops). has hit 16-17psi but fuel cuts. will remove fuel cut next time (92k miles motor swap soon)
 
D

db

Active member
Year, Model, miles on motor 1990 Alltrac, 40,000+ on rebuilt engine
PSI 15-16 psi
How many miles at this psi 40,000+
mods Twos R Us MBC, Blitz DD BOV, Fidanza lw flywheel, CM stage 3 clutch
failures prior to this rebuild, rear main seal, and other oil seals
comments zoooooom!
 
T

toayoztan

Moderator
T-Trac":1r9jj9xq said:
Year, Model, miles on motor
PSI
How many miles at this psi
mods
failures
comments
Click to expand...

1993, Alltrac, 205k
11-12ish (depends on temperature)
Since i've owned the car (around 25k miles ago)
SSQV BOV, XS Power DP, Motoria 3" exhaust, ACT Street Disc clutch and ACT Heavy Duty pressure plate
I've overhauled motor basically with rod bearings, all seals/gaskets, hg, hoses, vac lines, timing belt, with usual tune ups
This PSI run is without a boost controller.

Bryan
 
alltracshoak

alltracshoak

Active member
T-Trac":1w1k6wny said:
Year, Model, miles on motor
PSI
How many miles at this psi
mods
failures
comments
Click to expand...
90,st185,170k
8-10 psi(stock)
mods for now are hks 3'' catback
failures,none so far
comments: still waiting to smog and after that, fmic and 14+ psi.
 
D

donteatbugs

New member
Year, Model, miles on motor - 1990 st185 150000
PSI- 13-15
How many miles at this psi- 6000
mods- 3 in exhasut, fmic
failures- none so for
comments- still slow
 
G

grip addict

New member
90, 134000 on old build, 50 on new stock longblock
15/17
3 months/ 5 days
intake, exhaust/ fuel, td06, intake, exhaust, mhg & studs, ecu flash
yes/nevarrr
comments :
ran 11 psi very reliably for 9 months, then decided to up it to 15, and it died.
suggestion: don't run more than 12 on a stock motor.
 
S

ST185pinjo

New member
Year, Model, miles on motor
PSI
How many miles at this psi
mods
failures
comments
Click to expand...

1992, ST185CS, 186.000[KM]
15 psi
50.000[KM]
Started with MBC, replacement filter, 3"aussie, FCD.
Now: EMS, fuelrail, EVOIII and some more.
never had failures.
 
T

theUNYTEDone

Moderator
ive been at 10.5-12psi for almost a year now.

1990st185

-3"turbo back exhaust, no cats
-N1 muffler
-2.5" FMIC, 24x12x2.5 ish?
-straight intake


125K as of now, annnd yeah.

built motor should be pushing 22 for race tune and 15-7 on daily tune.
 
G

gt4tified

New member
Year, Model, miles on motor: 1992, ST185, 97,xxx

PSI: 7 - 11

How many miles at this psi: 2,000+

mods: Apexi Intake filter, 3" exhaust, SSAC d/p, turboxs rfl bov, walbro in-tank fuel pump, st205 rear (lsd) diff, NGK iridium plugs, ACT clutch & PP, racing hart lightweight 15" alloys, msd blaster ss coil, AVC-R boost controller.

failures: knock sensor

comments: hoping to tune the shit out of the ct26 soon!
 
G

gearhead313

New member
T-Trac":1d2lcnr4 said:
Year, Model, miles on motor
PSI
How many miles at this psi
mods
failures
comments
Click to expand...


1988 ST165, miles on motor unknown (JDM rev2 motor)

18psi (20psi peak) for 1500-2000miles about.

swap, tubular mani, borg/IHI GM-3 turbo, tial gate, 2.5" down and back, straight intake, 2.5" piped FMIC.

Knock sensor problem for the last 500miles, have yet to fix it.
 
8

88st165

New member
1988, st165, 46,xxx mi.

on average around 12-14psi... no boost controller just open midpipe

prob about 2k mi on this psi

twin entry swap, straight intake, 3" d/p and m/p, upgraded h/e, constant pump mod....

i am planning on getting an exhaust in hopes to lower it to 10-12psi
 
S

Simba

New member
'91 ST185, 2nd gen JDM engine with ~50k on it.

15 psi street (93 octane), 22 psi race/rally (100 octane).

~10,000 @ 15 pounds, probably ~750-1000 at 22.

Mods: JDM computer, tweaked base fuel pressure, Denso Supra TT pump, RC cleaned/flowed 440's (~452cc), CT27 w/ Forge actuator, BayArea 3" TMIC, SSQV, AVC-R, JUN cam gears (-4 ex. +1 in.), K&N FPIK, KO 2.5" DP, 3" Motoria, Innovative wideband. Various other crap.

Failures: Nothing so far, at least related to the engine. I did have a CT27 toss an oil seal, but ATS replaced it, because ATS rocks.

Comments: My goal with the car is to squeeze as much as possible out of a stock engine, CT26 housing and (mostly) stock fuel system, with sacrificing reliability.

So far, it's been very fun, pretty quick and given me no trouble.
 
Q

Qlynxer

New member
88 165 with about 70K on JDM 2nd Gen motor.
15 psi daily driven, for over 15K now.
Mods include Garett Gt28rs turbo, 205 intercooler, Full 3inch exhaust, and just recently I installed a water injection kit. I may bump it up to 17psi for track use.
No failures, but i've had to do a lot of maintanece like radiator, axles, alternator etc.
Quick and relatively reliable, I freaking love it.

Quan L
 
B

built2run

New member
88, st165, 1st gen. jdm w/ +-50k
aprx.16, 1.1 bar
about 10k @ 1.1
k&n oem replacement, MBC, intercooler pump constant run, bigger heat exchanger for ATW-stock core, primary cat is gutted.
no boost related failures yet, was missing because of old plugs but thats it.
this car is smooth and fast, i use Redline 20w50 synthetic oil i recommend this for all turbo cars, its designed for them.
 
A

at3619

New member
94' 205 motor w/ almost 100,000 miles
8psi on winter ethanol pump gas("91 octane" :x) :cry:
18psi on 91 octane(best we get at the pump)
22psi on 100 octane
 
P

Phil-GT4RC

New member
1991 RC 86,000
15psi
20,000 and nearly 2 years at this boost
No boost related problems, general wear and tear parts only
Blitz Nur Spec, Aussie dp, Blitz DSBC, Cone filter.
 
C

CodingParadox

New member
18-19psi on a stock unopened JDM motor, with a street brawler. Mods are on the page in my sig. Prolly 4k so far on this setup, no hint of problems.
 
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