6.9 injectors in 7.3 diesel

[Abrooks]

Do the injectors froma 6.9 IDI work well in a 7.3 IDI? We have one injector on the 7.3 that has damaged threads; we have a spare 6.9 motor with good injectors.

[mobilemech]

6.9 or 7.3 injectors are the same, they are all mechanical.

[arthurgoboom]

I recommend that you have the pop-off pressures set all the same when you are mixing injectors from different enginesor mixing new and used ones. If you know someone with a pop-off tester this is an easy job, otherwise you might find a diesel shop that will check the injectors and set the 6.9 injector to match your existing 7.3 injectors. I have a pop-off tester, I'm in northwest Indiana and I'll do it for you if you're local.

[cdnsarguy]

What year is the engine and what code is the injector......check the injector nut flats.

[Mr_Roboto]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: mobilemech</div><div class="ubbcode-body">6.9 or 7.3 injectors are the same, they are all mechanical. </div></div>

Technically they are not exactly "the same". The 7.3 injectors have the pintle retracted .060" (I think that's the number) for reduced emissions. This likely changes timing a little, but in a pinch I wouldn't hesitate to do it.

Personally I'd have someone send me a good used 7.3 injector before pulling one out of a donor engine. Not because it's a 6.9 injector but because IMO it's better to keep your "spare" engines as complete as possible.

[Bill1013]

Put your location in your sig. , maybe you can get some local help then.

I've got 8 spare stanadyne 7.3 injectors all good, you can have one for the postage. How's that? PM me with addy if you want it.