Return Caps Rev. 1.0
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Cargo Master
Joined: Oct 2008
Posts: 3,330
Likes: 13
From: Eaton, CO
Your injector was not cut at all. I replaced the o-rings, lubed them with oil and snapped the proto on. It fit perfectly and the holes aligned on the same elevation. Thanks for the injector!
Posting Guru
Joined: Feb 2015
Posts: 1,147
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From: NW WA
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Freshman User
Joined: May 2013
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That design is what I envisioned to solve the issues with the plastic caps. If you could bolt it to the valve cover with bolts that have threads on top of the bolt cap, you could use rubber grommets to stabilize it and prevent vibrations travelling through it. Sorry if I'm stealing your thunder!
Postmaster
Joined: Dec 2004
Posts: 2,941
Likes: 30
From: Maple Valley, WA
There is .030" of squish on each O-ring, so I dont think vibrations are going to be a big issue, and thats more than enough to pick up any variance between injectors... We just have to see. If they dont like vibration and want to move around, thats a good idea.
Cargo Master
Joined: Oct 2005
Posts: 2,298
Likes: 26
From: NJ
I was tempted to order these when I ordered a cam the other day, but held off as I've been told you cannot remove the valve covers without removing these rails. I'm not sure if the design has been revised to clear the valve covers though, I did not ask. I'm not looking forward to messing with caps and return lines again though, it took a few tries to get my 6.9 sealed up tight last time I touched the fuel system.
Lead Driver
Joined: Dec 2006
Posts: 6,496
Likes: 94
From: So. Jersey
I was tempted to order these when I ordered a cam the other day, but held off as I've been told you cannot remove the valve covers without removing these rails. I'm not sure if the design has been revised to clear the valve covers though, I did not ask. I'm not looking forward to messing with caps and return lines again though, it took a few tries to get my 6.9 sealed up tight last time I touched the fuel system.