3.5" Exhaust, Will It Work - Ford Powerstroke Diesel Forum

 
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post #1 of 5 Old 01-05-2013, 06:30 PM Thread Starter
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3.5" Exhaust, Will It Work

Will be pulling the trigger this coming week on a set of stage 1 injectors and a chip for them. Already have on order a G2 w. wheel, turbo rebuild kit (don't believe I need it but getting it in just in case), up pipe gaskets, exhaust manifold gaskets, glows, uvch's, gauges.

The after turbo exhaust is factory 3.5" no muffler but it ends just behind the passenger door out the side.

My question for the exhaust gurus is, Do I need to size it up for the larger injectors, even when it is so short a distance from the turbo?

I understand the basics of fluid dynamics (yes air is considered a fluid) and that bigger is better for after a turbo. I just wonder if it is necessary for a larger pipe in my application. I guess the temps will tell too. I don't want to blow the $$$ on something that isn't absolutely necessary.

Early 99 F550 4x4, 6 Shift, 11 Foot Flat Bed Dump, 11000# Empty, Always Loaded or Pulling Something up to 26000# GCW

G2 Wicked Wheel - 34psi Boost On A Factory Turbo, TS 6 Chip, 4 in Turbo Aft, Terminator Pump, Diesel Innovations 99+ SS Up Pipes - Cut / Rewelded To Fit My Early 99, Donaldson Air Filter Setup, 75# Fuel Pressure Regulator Spring, Homemade Hutch Mod, Gauges, Newer Clear Headlights and Markers w/ Hella Bulbs, New Mirrors
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post #2 of 5 Old 01-06-2013, 09:27 AM
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I would just leave it for now and keep an eye on EGT's

On the other hand, I would absolutely get bellowed up-pipes instead of new gaskets.
Well worth the investment.

PIS 175/80's, Van Turbo with EBPV, BD Billet Wheel
Lots of money spent at RiffRaff
Holley fuel pump, in tank mods, crappy riding leveling kit, DP-F6, 5 Gauges+Edge CS in dash, CB radio in Dash, over 100 goofy little mods
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I love finally having my truck back... that 7.3 dog that I was driving was just not cutting it.
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post #3 of 5 Old 01-06-2013, 09:35 AM
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I would save the $$$ and use it for the new set of tires you are going to need after the sticks and chip go in. Watch the EGT's, but I don't think that you will need 4" or 5" exhaust for the 400 HP (give or take) you will get out of the stage 1's.

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post #4 of 5 Old 01-08-2013, 07:48 PM Thread Starter
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Quote:
Originally Posted by Joel View Post
On the other hand, I would absolutely get bellowed up-pipes instead of new gaskets.
An early 99 cant fit bellowed up pipes if I read correctly on the other threads about them. They only fit 99.5 - 03 models

Early 99 F550 4x4, 6 Shift, 11 Foot Flat Bed Dump, 11000# Empty, Always Loaded or Pulling Something up to 26000# GCW

G2 Wicked Wheel - 34psi Boost On A Factory Turbo, TS 6 Chip, 4 in Turbo Aft, Terminator Pump, Diesel Innovations 99+ SS Up Pipes - Cut / Rewelded To Fit My Early 99, Donaldson Air Filter Setup, 75# Fuel Pressure Regulator Spring, Homemade Hutch Mod, Gauges, Newer Clear Headlights and Markers w/ Hella Bulbs, New Mirrors
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post #5 of 5 Old 01-09-2013, 03:23 PM
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Oh right

Im sure the gaskets will be fine then

PIS 175/80's, Van Turbo with EBPV, BD Billet Wheel
Lots of money spent at RiffRaff
Holley fuel pump, in tank mods, crappy riding leveling kit, DP-F6, 5 Gauges+Edge CS in dash, CB radio in Dash, over 100 goofy little mods
Still pretty slow, just less slow now.
Quote:
Originally Posted by peixinho View Post
I love finally having my truck back... that 7.3 dog that I was driving was just not cutting it.
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