rail fittings on lb7?

[DIESELMAFIAPER.LB7]

Has anyone drilled these out or put ppes fitting in or is this a waste of time to try? Just curious I've seen some stuff but no definite answers or is it better to try shimming the fprv? An what you guys shimming them with same shims as used for the fprv on lly-lbz trucks?

 

[JMK777]

I pluged the fprv, scerw shimming it.

 

[DIESELMAFIAPER.LB7]

I was just going to shim mine try that it's not hard to get to just curious if the rail fittings were a issue or not have an extra ppe fitting laying around to try maybe but

 

[ZeroGravity58]

i took my FPRV off and welded the hole shut. I then cut the line out where the banjo bolt when into the FPRV and put a tee in. Works great so far.

 

[sparepartsracing]

i took my FPRV off and welded the hole shut. I then cut the line out where the banjo bolt when into the FPRV and put a tee in. Works great so far.

ur truck surge at idle?:spit:

 

[JMK777]

The ported fitting is hit or miss I think .I drilled mine out and don't see any difference in it. But I'm on stock injectors and pump.

 

[sweetdiesel]

Porting the rail fittings does nothing . There is a orifice on lb7s behind the fitting that needs to be drilled NOT the fitting.

Do a search there is lots of threads on this

 

[sweetdiesel]

ur truck surge at idle?:spit:

Why would it? The relief valve doesn't have anything to do with idle.

 

[JMK777]

ur truck surge at idle?:spit:

Your thinking regulator?
Fpr

 

[DIESELMAFIAPER.LB7]

Hmm I did search maybe I searched it wrong .... anyone got a link

 

[sweetdiesel]

I found a whole page

Hear is a old one
http://www.duramaxdiesels.com/forum/showthread.php?t=2944&highlight=Fuel+rail+fittings

 

[DIESELMAFIAPER.LB7]

Thanks Simon

 

[Mike_S]

Porting the rail fittings does nothing . There is a orifice on lb7s behind the fitting that needs to be drilled NOT the fitting.

Do a search there is lots of threads on this

Not on all of them. The orifice was "built in" to mine. I drilled them just for the simple fact that I have larger injectors and didn't want to chance having a bottleneck ahead of the injectors.

 

[Dan@PPE]

Porting the LB7rail fittings does nothing . There is a orifice on lb7s behind the fitting that needs to be drilled NOT the fitting.

Do a search there is lots of threads on this

fixed it for ya...

He is correct about the plug behind the raill fitting, you will need a magnet to get it out...

 

[Mike_S]

fixed it for ya...

He is correct about the plug behind the raill fitting, you will need a magnet to get it out...

Interesting, mine had nothing behind the rail fitting, you could see through the thing clear as day. It did, however, have a small orifice inside the fitting, as part of the fitting itself. Perhaps I have an oddball engine...

 

[DIESELMAFIAPER.LB7]

I have some extra rails I'm going to pull apart an clean an drill out maybe even port them throw them on see what happens might just space the fitting out did anyone try that I seen in that thread Simon posted the link for they tried running the fitting in (without the orfice) but it went in to far so why not put a washer to keep it out enough? Shouldn't cause any sealing issues should it?

 

[DIESELMAFIAPER.LB7]

Interesting, mine had nothing behind the rail fitting, you could see through the thing clear as day. It did, however, have a small orifice inside the fitting, as part of the fitting itself. Perhaps I have an oddball engine...

Ill check both of mine see how mine look

 

[Dan@PPE]

Interesting, mine had nothing behind the rail fitting, you could see through the thing clear as day. It did, however, have a small orifice inside the fitting, as part of the fitting itself. Perhaps I have an oddball engine...

04?

 

[DIESELMAFIAPER.LB7]

I have an 03 that also has nothing just tore the rail down got crappy phone pics there's just a pin hole in the fitting nothing else

 

[DIESELMAFIAPER.LB7]

Can't seem to load them off my phone try getting a camera think the ppe fitting is way to big might try using a 1/32 or smaller bit to try drilling these fittings out