Injection hard lines

LordTachunki · May 25, 2023

Are the 6.9 and 7.3 IDI hard lines the same or are they different lengths? I’ve read that they have something to do with timing and the set I got which was for the truck version of the 6.9, some of them were the wrong length and barely fit to the point I can’t get the anti vibration clamps back on the passenger side lines. Cylinder one is misfiring because of it.

Nero · May 25, 2023

As far as I know both the 6.9 and 7.3 shared the same lines. They are different between the truck and van variants, but past that, the same.

Brian VT · May 25, 2023

I got a set not long ago (for my 6.9) and they don't fit very well. I had to do a lot of tweaking and was never able to get one of the clamps on. I carry my old ones in the truck in case one of these new ones fails. I should have just put the old ones back on.

hacked89 · May 25, 2023

They are the same and bending is required and modification no matter what. It’s not just a bolt on thing. You want to buy the lines with the vibration clamps already installed unless you like pain. I get the cheapest ones off eBay that don’t have the sleeve showing.

gnathv · May 25, 2023

Did you remove the timing adapter on number one when you put the 6.9 line on. I believe the 6.9 line is longer for this reason.

Old Goat · May 25, 2023

gnathv said:
Did you remove the timing adapter on number one when you put the 6.9 line on. I believe the 6.9 line is longer for this reason.

Correct.
screwhead was looking for one of the timing adapters in this thread and a picture of the thing in post#1 for his 7.3

Extender for Injector #1

I know this has been discussed before but at least from the posts I saw the only options were finding one of the lines off a van or classic diesel designs used to sell them but does not anymore. Got a baby moose fuel injection pump, installed, runs great but was leaking out of/around injector...

www.oilburners.net

All the hard fuel lines are the same exact length except for the one on the 7.3 with the timing adapter.
I don`t know anything about the van`s.

Goat

Rdnck84_03 · May 25, 2023

Old Goat said:
All the hard fuel lines are the same exact length except for the one on the 7.3 with the timing adapter.
I don`t know anything about the van`s.

I may be totally wrong about this but, my understanding is that the van's are the same also except for the short one with the adapter is on #4 instead of #1.

James

FrozenMerc · May 25, 2023

There is a difference between the turbo motors and NA motors injection lines. The lines for cylinders 2 and 4 are bent differently to pass under the turbo air box. However, that configuration can be run on any of the older NA engines as well. You can see the difference in #2 in the images below.

When I first installed the turbo air box on my 6.9, I had to space it up about an inch to clear the stock 6.9 lines. I ordered 7.3 turbo lines when I rebuilt the motor at a later date and was able to remove the spacers.

You must be registered for see images attach

You must be registered for see images

hacked89 · May 25, 2023

I just bend the NA lines as needed. Maybe 5 minutes. I haven’t ran a factory air box, if all the lines would need to be bent I could definitely understand why you would want specific. On my ATS093 I just had to bend the lines around the turbo area.

hacked89 · May 25, 2023

gnathv said:
Did you remove the timing adapter on number one when you put the 6.9 line on. I believe the 6.9 line is longer for this reason.

If that was to me, I bend the first line up or down to fit. I’m ordering Chinese repos (really most everything is from China now). My next unbent set will be here next week and I’ll measure the length of the first line.

gnathv · May 25, 2023

No, that was for LordTachunki. He said after putting on 6.9 lines he has a miss on #1 cylinder.

LordTachunki · May 25, 2023

gnathv said:
Did you remove the timing adapter on number one when you put the 6.9 line on. I believe the 6.9 line is longer for this reason.

I’m the third owner of this truck and it never had one when I bought it

Injection hard lines

LordTachunki

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Nero

HD Diesel nut

Brian VT

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hacked89

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gnathv

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Old Goat

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Extender for Injector #1

Rdnck84_03

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FrozenMerc

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hacked89

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gnathv

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LordTachunki

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