power upgrades
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Elder User
Joined: Dec 2011
Posts: 533
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power upgrades
looking for some simple mods/upgrades for my 93 F250 7.3 IDI. mostly for power and tourqe but also exhuast sound. I have a 3 inch banks exhuast and k&n Filter. Everyone says a six inch exhaust is the way to go with diesel but it seems a bit overkill. Cold Air intake? turning the pump up a bit? Headers?(if possible on diesel)
Also, Im running what I believe to be a four inch lift. (add a leafs, no blocks) 35s. I dont beleive the PO did any gear changes, wondering if its worth it.
Im here to learn so everythings welcome, thanks
Also, Im running what I believe to be a four inch lift. (add a leafs, no blocks) 35s. I dont beleive the PO did any gear changes, wondering if its worth it.
Im here to learn so everythings welcome, thanks
New User
Joined: Sep 2013
Posts: 9
Likes: 0
From: Anchorage, AK
I'm new to this but I'm pretty sure a 4 inch exhaust will be plenty of flow. 6 inches sounds like a little overkill. When it comes to a re-gearing, what set of gears do you recommend and how difficult is it to find said set?
i ain't rite
Joined: Mar 2005
Posts: 65,616
Likes: 5,632
From: Marlboro Mental Hospital.
and get rid of that k&n piece of crap filter.
they let dust particles through, and dust is a diesels worst enemy.
running a k&n filter is about the same as running no filter at all.
they let dust particles through, and dust is a diesels worst enemy.
running a k&n filter is about the same as running no filter at all.
New User
Joined: Sep 2013
Posts: 9
Likes: 0
From: Anchorage, AK
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Fleet Owner
Joined: Jul 2006
Posts: 20,402
Likes: 872
From: Mi'kma'ki
if your turbocharged with one of the big 3,then 3" is pretty much all ya need.back in the day,banks did some dyno runs and claimed their 3.5" "monster" exhaust was good for a little bit over their 3" standard.so it's likely 3.5" is all the idi engines will benefit from.
"The standard Banks pipes and mufflers, as tested, have a 3-inch diameter, which has the ability to flow a lot more gases than the stock 2 1/2-inch system. An optional "monster" exhaust with 3 1/2-inch diameter tubing is also available. Banks told us that the larger-diameter system, which we did not test, is good for about 4 or 5 extra horsepower at peak rpm."
from 8th paragraph.
http://www.bankspower.com/magazines/...dewinder-turbo
"The standard Banks pipes and mufflers, as tested, have a 3-inch diameter, which has the ability to flow a lot more gases than the stock 2 1/2-inch system. An optional "monster" exhaust with 3 1/2-inch diameter tubing is also available. Banks told us that the larger-diameter system, which we did not test, is good for about 4 or 5 extra horsepower at peak rpm."
from 8th paragraph.
http://www.bankspower.com/magazines/...dewinder-turbo
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Senior User
Joined: Jan 2013
Posts: 327
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From: West Aus
this is not too bad for tyre, diff calculations.
Speed Potential Calculator For Ring Gear And Pinion Changes
Speed Potential Calculator For Ring Gear And Pinion Changes
Lead Driver
Joined: Apr 2008
Posts: 6,945
Likes: 13
There are plenty of options out there for more power. Having a turbo would have been one of the things you could have told us as far as things already done. Search button works wonders. There are currently multiple build threads going on to take a look through.