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| 6.9L IDI Diesels Technical discussion of topics related to vehicles powered by the 6.9 Liter In-Direct Injection Navistar engines. |
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1984 6.9
About to pick up a 1984 F250 4x4 4 speed 6.9 diesel. Just wondering what I can do as far as mods go. I know I can do a turbo but thats a little expensive right now.
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For cheap mods....hypermax exhaust + a little fab to get it to work (3.5" exhaust). Open up the intake somehow. Instal a pyro, and turn the pump up a little bit. Should be roughly $500-600 for everything mentioned above. You should be making a good 190 hp at the crank. You can find used turbo's. It seems like recently a lot of people are selling them as they need the money, so they can be had failry cheap. Heck I saw somebody on another site post a craigslist add with a 7.3IDI engine with the turbo on it, for $450. Just gotta look. |
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im just taggin along with your post. i just bought an 84 6.9idi 2wd dually 2 days ago. As soon as i got it home I straight piped it with a 3in exiting before the rear wheels. Sounds good. Financially, i dont think i will be installing a turbo anytime soon. I plan on puttin a k&n in and runnin a tube off the air box out to the grille. Of course turn up the fuel and get some coal burnin but I am looking for some advice as to how i can make some good power and keep it reliable. This is an AT so i am wondering if i should consider a tranny flush.
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Nitrous....kinda iffy.
I've only ever heard of one guy using it. He said if he engaged it at to low of an RPM the motor would actually cut out. I wouldnt try it. Propane is probably the most I would go. |
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