Max Safe PSI On Stock Internals

jjpluml · March 21st, 2011, 02:01 PM

anyone know what the max boost you can run on stock internals with a fmu, cold air, 3" exhaust? thanks for the help guys. BTW its an 84 model if that makes a difference

HMUSN · March 21st, 2011, 09:20 PM

17/18 psi.

03 R Code · March 22nd, 2011, 12:10 AM

If the stock internals are your limit, then much more than that. The factory SVO engines are forged, and have seen 500+ on many cars. If you have a factory fuel system then HMUSN hit the nail on the head. If you have an adjustable FPR and better than factory fuel pump you can up the fuel pressure and push the factory injectors to handle more boost but the factory turbo on your car will get in it's own way above 23-24 psi.

With fmu, did you mean a front mount intercooler? FMIC?

HMUSN · March 22nd, 2011, 07:53 AM

Pretty sure he meant a fuel management unit, but even being able to crank up the fuel pressure isn't going to do any good if the pump and injectors can't flow to compete.

jjpluml · March 22nd, 2011, 10:09 AM

yes i meant fuel managment, and i do have an upgraded fuel pump. im using this car as a dd and just dont want to push it past its limits

03 R Code · March 22nd, 2011, 07:59 PM

If you don't want to risk it keep it below 18psi.

jjpluml · March 23rd, 2011, 05:29 PM

thanks. Thats what i needed to know

king_Ahmet · July 7th, 2011, 08:29 AM

so, with fuel upgrades, you can run 23+psi on the SVO?

03 R Code · July 8th, 2011, 12:50 AM

There are some that have run higher than that with factory internal parts, but they never last long as in less than a dozen trips to the drag strip. But yes if you have enough fuel pump and injectors and a way to tune for them to keep the car from going lean you can run a lot of boost.

03 R Code · July 8th, 2011, 12:54 AM

Originally Posted by jjpluml

anyone know what the max boost you can run on stock internals with a fmu, cold air, 3" exhaust? thanks for the help guys. BTW its an 84 model if that makes a difference

I'd like to point out that with any original 2.3T computer it already has programming to increase fuel flow with boost. If you add a fuel management unit it will just be in the way of the factory computer settings. All you really need is a bigger than factory pump, like a Walbro 255lph in tank and AFPR. The factory injectors should flow enough to support around 300whp.

Also, with a really good FMIC you can get away with a littl more boost on factory fuel equipment because of the cooler air charge.

Dbo1220 · October 10th, 2011, 03:01 AM

Hey guys, I got a 84 Gt Turbo, and was wondering whats the stock PSI of the turbo and how much PSI can my engine handle (its all stock at this point, internals and all).

March 21st, 2011, 02:01 PM	#1
jjpluml Regular 1987 5.0 HO, 1984 SVO Join Date: Feb 2011 Location: arkansas Posts: 87 iTrader: 0 reviews	Max Safe PSI On Stock Internals anyone know what the max boost you can run on stock internals with a fmu, cold air, 3" exhaust? thanks for the help guys. BTW its an 84 model if that makes a difference

March 21st, 2011, 09:20 PM	#2
HMUSN Doc 1986 SVO 48.47@ 12.58 Join Date: Nov 2006 Posts: 37,050 iTrader: 11 reviews	17/18 psi. __________________

March 22nd, 2011, 12:10 AM	#3
03 R Code MM Fanatic unstoppable @ speed of light Join Date: Jul 2006 Location: Knees deep in dat ass Posts: 3,104 iTrader: 0 reviews	If the stock internals are your limit, then much more than that. The factory SVO engines are forged, and have seen 500+ on many cars. If you have a factory fuel system then HMUSN hit the nail on the head. If you have an adjustable FPR and better than factory fuel pump you can up the fuel pressure and push the factory injectors to handle more boost but the factory turbo on your car will get in it's own way above 23-24 psi. With fmu, did you mean a front mount intercooler? FMIC? __________________ Political correctness is a doctrine fostered by a delusional, illogical, liberal minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.

March 22nd, 2011, 07:53 AM	#4
HMUSN Doc 1986 SVO 48.47@ 12.58 Join Date: Nov 2006 Posts: 37,050 iTrader: 11 reviews	Pretty sure he meant a fuel management unit, but even being able to crank up the fuel pressure isn't going to do any good if the pump and injectors can't flow to compete. __________________

March 22nd, 2011, 07:59 PM	#6
03 R Code MM Fanatic unstoppable @ speed of light Join Date: Jul 2006 Location: Knees deep in dat ass Posts: 3,104 iTrader: 0 reviews	If you don't want to risk it keep it below 18psi. __________________ Political correctness is a doctrine fostered by a delusional, illogical, liberal minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.

March 22nd, 2011, 10:09 AM	#5
jjpluml Regular 1987 5.0 HO, 1984 SVO Join Date: Feb 2011 Location: arkansas Posts: 87 iTrader: 0 reviews	yes i meant fuel managment, and i do have an upgraded fuel pump. im using this car as a dd and just dont want to push it past its limits

March 23rd, 2011, 05:29 PM	#7
jjpluml Regular 1987 5.0 HO, 1984 SVO Join Date: Feb 2011 Location: arkansas Posts: 87 iTrader: 0 reviews	thanks. Thats what i needed to know

July 8th, 2011, 12:50 AM	#9
03 R Code MM Fanatic unstoppable @ speed of light Join Date: Jul 2006 Location: Knees deep in dat ass Posts: 3,104 iTrader: 0 reviews	There are some that have run higher than that with factory internal parts, but they never last long as in less than a dozen trips to the drag strip. But yes if you have enough fuel pump and injectors and a way to tune for them to keep the car from going lean you can run a lot of boost. __________________ Political correctness is a doctrine fostered by a delusional, illogical, liberal minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.

October 10th, 2011, 03:01 AM	#11
Dbo1220 Newbie Join Date: Oct 2011 Posts: 12 iTrader: 0 reviews	Hey guys, I got a 84 Gt Turbo, and was wondering whats the stock PSI of the turbo and how much PSI can my engine handle (its all stock at this point, internals and all).

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

Threads Similar to: Max Safe PSI On Stock Internals
Thread	Thread Starter	Forum	Replies	Last Post
Stock Internals??	05GTXR	2005 - 2010	20	November 23rd, 2009 01:45 AM
How much can stock internals take?	sharkbait	96-98	16	October 19th, 2009 06:53 PM
how much can stock internals take?	EscortSportage	5.0 Mustangs	86	June 11th, 2009 04:06 PM
need help on stock internals?	kotten148	2005 - 2010	10	October 6th, 2008 07:22 PM
Stock 3V 4.6l internals	manOwar	2005 - 2010	0	February 6th, 2007 01:49 PM

All times are GMT -4. The time now is 12:51 AM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.