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N/A performance mods?

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Old Mar 23, 2009 | 03:17 AM
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serottak
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N/A performance mods?

I'm new to the diesel world. I just picked up an 87 f-250 with the 6.9 that is completely stock. My question is in regards to performance mods. everything that I have read on here is either about bringing a truck back from the dead or turbo this turbo that. what are the mods that can be done for a N/A diesel.
 
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Old Mar 23, 2009 | 04:31 AM
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turbo turbo turbo


or better exhaust


or ram air


or turn up the injector pump


or synthetic oil


there is not much of a after market for performance parts for these engines
 
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Old Mar 23, 2009 | 05:56 AM
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fonefiddy
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From: Duluth, Mn.
The best mod for a NA is not really a mod at all. It's Maintainance.

Make sure Your Fuel System is up to snuff, and the timing is set PROPERLY.
 
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Old Mar 23, 2009 | 07:37 AM
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Originally Posted by serottak
I'm new to the diesel world. I just picked up an 87 f-250 with the 6.9 that is completely stock. My question is in regards to performance mods. everything that I have read on here is either about bringing a truck back from the dead or turbo this turbo that. what are the mods that can be done for a N/A diesel.
welcome to fte,

what kinda milage is on the injection pump and injectors? you can make a ram-air intake, better flowing exaust, buy a pyrometer, and maybe turn the fuel up a hair
 
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Old Mar 23, 2009 | 08:56 PM
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Dave Sponaugle
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serottak,
Welcome to FTE and the IDI diesel forum.

The reason you see turbo this and turbo that is because it is the only power mod that really makes a lot of difference.

Exhaust, intake, timing and fuel settings may get you 10 or 15 HP more.

Those mods with a turbo will give you 70 or 80 HP.

Diesels need air.
 
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Old Mar 23, 2009 | 09:52 PM
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From: Bath, Michigan
Talking

Originally Posted by serottak
I'm new to the diesel world. I just picked up an 87 f-250 with the 6.9 that is completely stock. My question is in regards to performance mods. everything that I have read on here is either about bringing a truck back from the dead or turbo this turbo that. what are the mods that can be done for a N/A diesel.
I too was new to owning a diesel truck, and wanted to get what I could out of my truck without going the turbo route. You can see in my signature (below) what I have done and plan to do to get better mileage and reliability out of this beast of mine.

The Banks "Stinger" set-up (no longer made) seemed to be the best one could do for these naturally-aspirated IDI engines. It's a combination of a better intake and less restrictive exhaust that was engineered and marketed by Banks to get the most out of a non-turbo IDI equipped Ford.

Scrounge around and you can most probably find one.

Good luck!
 
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Old Mar 23, 2009 | 10:34 PM
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Originally Posted by dyoung14
welcome to fte,

what kinda milage is on the injection pump and injectors? you can make a ram-air intake, better flowing exaust, buy a pyrometer, and maybe turn the fuel up a hair
For all I know the injection pump and injectors might be stock too. So that means 370000 miles. I got the truck for the cost of one tire and a couple of hours on a battery charger. then I fired it up and drove away.


I did an oil change, oil filter, air filter, and fuel filter today and it made a huge difference in the power.Next I need to do the coolant, tranny fluid and tranny filter.

what kind of additive do I need to add to the coolant to prevent the cavitation?

As for exhaust what is the best method: large duals, small duals, large y-pipe, or an H-pipe?
 
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Old Mar 23, 2009 | 11:10 PM
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From: Kent WA
Free flowing intake - ram air if possible
3" or 3.5" free flowing exhaust with a real y-pipe and a straight-through muffler - mandrel bent downpipes from the manifolds too if possible
Add a pyrometer & turn up the fuel a flat or so

I did all of the above to my first IDI (second truck in my signature) and it made a very noticeable difference.
My "butt-dyno" says those mods are good for at least 10+ additional HP and a corresponding increase in torque - which from what I've read puts you about even with the first generation turboed IDIs

You can always go with a $500 set of headers and that'll get you even a few more poinies...

But if you really want the most improvement you can get, a turbo is the anwer. Spendier, but worth it - especially if you do any towing in the mountains.
 
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