Engine/Transmission (1994 - 1998) Plumbing my fuel pressure guage?

[CCiatteo]

I got the gauge (Autometer Z-series full sweep electric) installed, but not sure which plumbing route I should take.



a) Drilll and tap the banjo bolt on the side of the injection pump (coming from the filter head), install pressure snubber immediately and then run ready-made S/S braided line to the fender and install sending unit, then wires into the cabin and guage.



b) Use the banjo bolt from Geno's in place of the one on top of the filter head (output side leading to the injection pump). This means I would lose my bleeder so I thought about putting a 1/8NPT x -3AN x -3AN Tee. First screw the snubber into the Geno Banjo Bolt, then Tee into that. One of the -3AN branches would be connected to a S/S line similar to above and the other branch would get capped with a -3AN Cap and be used as my bleeder.



The Geno bolt will not fit at the side of the injection pump. That was my original plan, but the thread size is wrong.



Is one way better than the other?



Thanks

 

[hsmith]

Don't know which is better, but I tapped my banjo at the pump and installed the snubber there. Works fine.

 

[SRath]

Uh oh! You have a '97 and the Genos banjo bolt will not fit the pump threads? Dang! I was going to install mine today on my '96...

 

[The patriot]

If you can find my album pics, I think I have some of mine in there... I did mine on top of the filter housing. I have a pre and post filter setup so I can see how "clogged" my filter is.

HTH

 

[Shadrach]

Both the 12mm and 14mm bolts with the 1/8NPT hole in them are available form Cummins. Shadrach

 

[SRath]

There's some real conflicting info here on TDR

Here is the fairly recent thread where PToombs assured me the Geno's bolt fit his '97 and would fit my '96:



https://www.turbodieselregister.com...ere-put-needle-valve-fuel-pressure-gauge.html



I ordered that bolt. Now I'm being told the thread is wrong.



Who is right?

 

[CCiatteo]

I'll take a picture of the banjo bolt that came out of the side of the pump on my 97 with the Geno bolt next to it..... check back later tonight.

Definitive answers.....

The Geno bolt has a thread size of M12x1. 5 (on right)

The banjo bolt that feeds the side of the Bosch pump on my 97 has a thread size of M14x1. 5 (on left, with snubber attached)

Pic is below.

The Geno bolt will work fine on the filter head, but not at the inlet on the side of the Bosch Pump.

Hope this clears up any confusion.

 

[hsmith]

That's what I was thinking too. Thanks for the info.

 

[SRath]

That sure does answer it, Chris. Thanks!



Now: Who needs a never-used Geno's bolt for their 24v?

 

[CCiatteo]

That sure does answer it, Chris. Thanks!



Now: Who needs a never-used Geno's bolt for their 24v?

Don't feel bad. I saw the same thread you linked to above and that's why I bolt the Geno Bolt also.