Stock 6.9 IDI acceleration.

franklin2

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I think it was 87 that the zf-5 started. Maybe 88. I know my 88 had one.

I haven't heard of this reverse popping out issue.

Two of them I have driven do it, and some people on here have had the same problem. If you are careful when you put it in reverse, it usually can be lived with.
 

thx997303

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Looked at two more (been busy today). One 91 4x4 4 door f350 with an ATS turbo. Noticed the 7.3 had a remanufactured tag on the front. 68k on the Speedo, he says it's 168k. Was cold and started well. E40d trans, shifted well.

Issues were, its ugly, some rust on the rear doors, one of the door handles won't open the door from the inside, passenger window doesn't roll up or down, and the ac pump doesn't engage. It had pressure, but the clutch doesn't engage.

The positives obviously being the turbo, egt gauge works, when I asked about the coolant additives he confirmed be added them recently and knew what they were, unlike all the others the oil was in the safe zone on the dipstick. Says he has owned the truck for 10 plus years. Batteries were two years old. Trailer brake controller seemed to work. Stopped well. Tracked straight and didn't wander. Steering felt tight.

The second was a 92 4x4 extended cab f250. Looked nice, minor fender and cab corner rust. 5 speed transmission. 219k miles. Also a remanned engine.

It looked food, it shifted right, didn't pop out of reverse, decent power(no turbo).

But, his front and rear tires were different sizes, no oil on the dipstick, "what are coolant additives?", no coolant in the sludgy reservoir, just get a bad feeling about it. Doesn't seem he has maintained anything but the look well.

The guy with the ugly 91 wanted $3500, but I said I would only go to $2700 and he said that would be acceptable. What do you guys think?
 

79jasper

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The 91 sounds like a fair deal.
If you have/will have kids/backseat passengers, you will appreciate getting a crew cab over the extended cab.

In the future, if you want to swap in a 5 speed, it's not that hard.
Also the 91 has the better front axle.
 

franklin2

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Don't worry about the door handle and the other small stuff, that can easily be fixed one way or another, usually caused by one of Ford's better ideas using plastic retainers and clips to hold something together. The turbo truck should have a lot more get up and go than the others.

I can't figure people out sometimes. If you were trying to sell a truck, wouldn't you at least put some oil in it and clean it up a little bit to make it look presentable?
 

chris142

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during my search I passed up a years worth of trucks because there was no oil on the stick and mud for coolant. One guy proceded to pour 4 qts of non detergent oil into a 5 qt 460 when I pointed out that the stick was dry
 

thx997303

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Thanks for the replies guys. I'm working on a deal for the 91' four door. We'll see what happens.
 

KyleQ

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My truck feels somewhat fast empty with an all original motor, T-19, 3.55 gears and 265/75/16's. In reality its slow, WOT I can get to 55 in a decent amount of time, but with weight its a pig. I hauled scrap and scaled in around 18K and although it would do 70mph like that just fine, it didn't like getting there... lol

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It only smokes on startup and will make a slight haze that only people behind me can see... I've got a new IP, injectors and a 5 speed waiting to go in it with a mostly complete turbo kit. Its going to be fast when I'm done - keeping the 3.55's as I can get 18+ mpg empty with the current setup....
 

Agnem

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How did you time your new pump? Getting the correct timing is HUGE on these engines.
 

Greg5OH

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my 6400# cc on 31s, 3.55 N/A 7.3 runs alright. I can merge at about 80 kph. All i know is when im in 3rd in town doing about 50-60 kph (around 1800 rpm) when you mash it it starts going decently and will hit 90 quite quick.
However, "quite quick" means something different to everyone. I think its not bad for an N/A diesel.

id jump on that 4x4 crewcab! jeeez 2700 is an amazing price if you ask me. I paid 2k for my 2wd open rear end rus tbucket! (lesson learnd..)
 

thx997303

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I did actually. It's sitting in my driveway waiting for rear brakes. Picture and what I'm doing are in the thread titled "New to me truck."

I noticed the Axle has 4.10s and is limited slip today too. I have been enjoying it.
 

MIDNIGHT RIDER

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We always load and haul HEAVY, and usually over long distances.

Our experiences with the ZF transmission (way back when these trucks were nearly brand-new) have been less than stellar, having a few catastrophic failures.

The old 4-speeds will last forever.
 

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