North American Turbocoupe Organization



30lb of boost
bckslyr2003 Offline
Junior Member
#1
i have an stock 83 thunderbird turbo coupe i have up'ed the boost to 20-30psi what harmful effects can this have on my motor i would apriciate any information ne1 has thankyou

deadbird Offline
Posting Freak
#2
i would say the head gaskets for one. The head. alot. you might want to get a fuel pump to keep up with that too.
1987 5 sp.
- 4.6 2v swap.

Pete D Offline
Administrator
#3
Which is it, 20? or 30?. How's it run?
Pete Dunham



Jeff K Offline
Administrator
#4
There is a HUGE difference between 20 and 30 psi. 20 is within the turbos higher efficiency range, but 30 is WAY outside the efficiency range.

Are you running an intercooler? Anything above the low -mid teens you should run one.

I can almost guarantee that the stock fuel pump will not be able to keep up at 30 psi, and mayne not even at 20.

------------------
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 21 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 02 Taurus Vulcan(wifes car)
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized

bckslyr2003 Offline
Junior Member
#5
Quote:Originally posted by bckslyr2003:
i have an stock 83 thunderbird turbo coupe i have up'ed the boost to 20-30psi what harmful effects can this have on my motor i would apriciate any information ne1 has thankyou
I HAVE BLOCKED OFF MY BOV WITH A PLAT WHEN MY CAR IS AT IDLE IT RUNS 20LB OF BOOST WHEN I REVIT IT UP THE GAUGE GOES TO 30LB OF BOOST MT TURBO IS ALWAS SPOOLING SINCE I PUT THT BLOCK OFF PLATE ON TY

natmac3 Offline
Administrator
#6
Do you mean that you blocked off your Wastegate? Plugging a BOV will not change anything until you shift under boost.

20psi at idle is some Extreme cylinder pressure!!!

May your engine rest in peace...

--n8
1987tc

bckslyr2003 Offline
Junior Member
#7
and is there any way to figure ou how many horsepower will be gained with tht much boost ?

bckslyr2003 Offline
Junior Member
#8
natmac3 i blocked off my wastegate so what your sayin is my engine is going to go boom lol i was reading sometin about cr it said somtin if i have to high of boost my motor will get rally hot and detonate

Nsw Offline
Senior Member
#9
my question is what couldent go wrong making that much boost? your gonna run that thing soooo lean, blow your head gasket, detonate like crazy and probbaly burn that turbo out pritty fast.
1988 5speed black every option. 3inch single turbo to tail(stinger), manual boost control. k&n cone walbro fuel pump

1986 xr4ti project car..... way to many mods to list.

bckslyr2003 Offline
Junior Member
#10
ok how would i make it run richer i know i need to get more fuel pressure but what else could i do to slow its destruction ?





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