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  #1  
Old 03-15-2009, 10:05 PM
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Injector Cup replacement?

Is this something that i could do my self?

I Found a set of 7.3 heads that "could use injector cup replacment" I figure it would be a worth while investment to have a set of 7.3 Heads to port, Valve grind, out and put upgraded valve springs to save future down time.
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  #2  
Old 03-15-2009, 10:20 PM
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Re: Injector Cup replacement?

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Originally Posted by CNDiesel View Post
Is this something that i could do my self?

I Found a set of 7.3 heads that "could use injector cup replacment" I figure it would be a worth while investment to have a set of 7.3 Heads to port, Valve grind, out and put upgraded valve springs to save future down time.
it's an easy enough job with the right tools.
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Old 03-24-2009, 01:48 PM
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Re: Injector Cup replacement?

Racer, what tools are needed? Anything special? Also,any hints would be GREAT! I got a friend in need, his truck is down. We're thinking about doing all 8 cups at this point.
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Old 03-24-2009, 01:53 PM
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Re: Injector Cup replacement?

If you buy the parts from Swamp's they'll lown the tools. Will be a breeze with the heads off. You'll need some green Loctite.
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Old 03-24-2009, 02:09 PM
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Re: Injector Cup replacement?

to awnser your original qusetion it would be a piece of cake to change out all the cups when the heads are out off the vehichle. if you buy the cups from swamps they will loan you the proper remooval and install tools required to do the job right.

i'm not trying to highjack your thread but have a question about injector cups on my early 99. i'm doing all 8 on mine today. I got it apart and pulled all 8 injectors yesterday and pressureized the coolant system. that is when I found 4 cracked cups. I was able to borrow the proper puller and installer tools.
so here is the question.
with the engine still in the truck how do you get to the back couple cups? cylinder # 3-5-7 on the passenger side and the #8 on the drivers side? are there any tricks to the removal process???? there is no way to get the slide hammer in there. if I can get them out I should be able to install the new cups easy enough.
also how much locktite and where on the cups do I put it?
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Old 03-24-2009, 03:40 PM
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Re: Injector Cup replacement?

Only one I had a tough time on was #5 due to the heater box. I put a socket over the tap and ran a bolt through it into the tap to get the cup out. Put the locktite on the surfaces that make contact with the head. At the bottom and around the top I think. After it sits for a while look into the cup and dry the cups of any excess loctite. If it dries in the bottom its a bitch to get out. From experience.
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Old 03-24-2009, 04:04 PM
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Re: Injector Cup replacement?

I was hoping not to need to take the heads off. I'm sure that it's much easier with the heads off. I've never taken the heads off, so I don't know what's involved, the only reason for hesitation. Thanks for the nod to Swamps. I'll check him out.
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Old 03-24-2009, 04:08 PM
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Re: Injector Cup replacement?

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Originally Posted by NastyCracker View Post
Racer, what tools are needed? Anything special? Also,any hints would be GREAT! I got a friend in need, his truck is down. We're thinking about doing all 8 cups at this point.
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Originally Posted by Barnbuilder View Post
Only one I had a tough time on was #5 due to the heater box. I put a socket over the tap and ran a bolt through it into the tap to get the cup out. Put the locktite on the surfaces that make contact with the head. At the bottom and around the top I think. After it sits for a while look into the cup and dry the cups of any excess loctite. If it dries in the bottom its a bitch to get out. From experience.
I have the slide hammer setup, they make a kit that is similar to what Barnbuilder is describing above.
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Old 03-24-2009, 04:15 PM
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Re: Injector Cup replacement?

Swamps had cups for about 15 a pop. Resonable I think. I'll call him later. Thanks again guys.
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Old 03-24-2009, 07:20 PM
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Re: Injector Cup replacement?

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Originally Posted by Barnbuilder View Post
Only one I had a tough time on was #5 due to the heater box. I put a socket over the tap and ran a bolt through it into the tap to get the cup out. Put the locktite on the surfaces that make contact with the head. At the bottom and around the top I think. After it sits for a while look into the cup and dry the cups of any excess loctite. If it dries in the bottom its a bitch to get out. From experience.
thank you you're a life saver.
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