Hotrodtractor
Moderator
I'll put in another vote for making a new banjo bolt fitting for the back of the heads. I have done a few trucks that way now. It is tight, but I'm not a fan of NPT fittings at all... so I try to eliminate them when possible.
Fuel distribution to back of the heads
- Thread starter V-Ref
- Start date
smokinstroker92
Member
What is the size of the current fitting in the head at the fuel rail plug?
Sent from my EVO using Tapatalk
Sent from my EVO using Tapatalk
m j
Active member
Freightshaker
New member
Little confused here but it doesn't take much lol. The fuel fittings on the head are 1/8"npt right, are you guys talking about converting those to a different fitting?
Hotrodtractor
Moderator
I take these fittings in this picture I just borrowed from the post above you:
Then I weld an AN fitting to them and drill out the center for flow - then just plug the 1/8NPT fitting holes that are normally used with a pipe plug. Diesel Innovations also sold new custom fittings at one time to replace these and do the same thing that I describe. I'm not sure if David Lott still has them or not.
Freightshaker
New member
I take these fittings in this picture I just borrowed from the post above you:
Then I weld an AN fitting to them and drill out the center for flow - then just plug the 1/8NPT fitting holes that are normally used with a pipe plug. Diesel Innovations also sold new custom fittings at one time to replace these and do the same thing that I describe. I'm not sure if David Lott still has them or not.
Ok thanks! I wasn't aware there were other fittings to use on the back of the head. I assume that isn't necessary if you are not looking to go high hp and the 1/8npt will suffice.(correct) The parts are stacking higher and higher for my first 7.3 project. So being I have not got into it yet I enjoy all these different ideas. Sorry op for the semi hijack.
Hotrodtractor
Moderator
Yeah - you'll be fine using the 1/8NPT fittings - 99.9% of people will be fine using them. If you ever did want to change it, you can do that at a later date.
Strictly Diesel
Active member
Using the rear ports isn't even "necessary" for BIG power. I'm feeding 400/400s through the 1/8" ports with no pressure drop, as were the WOP Lightning and Rail when those had 7.3L engines in them.
m j
Active member
DI still sells the fitting. I bought them a little while ago. not on his site though you have to call.
I just cannot see using an a1000 size pump with a 5/8 outlet necked down to two 1/8 npt inlets. it has to be hard on the pump longevity.
it isnt like it is a difficult thing to feed through the back of the head with a -06 (I havent looked at returning through the front yet)
you are already changing the entire fuel supply system to -06, so two more -06 fittings seems to me a no brainer.
DI had them on the shelf. they are a very nicely done stainless item and inexpensive.
I just cannot see using an a1000 size pump with a 5/8 outlet necked down to two 1/8 npt inlets. it has to be hard on the pump longevity.
it isnt like it is a difficult thing to feed through the back of the head with a -06 (I havent looked at returning through the front yet)
you are already changing the entire fuel supply system to -06, so two more -06 fittings seems to me a no brainer.
DI had them on the shelf. they are a very nicely done stainless item and inexpensive.
FrankTheTank
Active member
The thing I like the most about feeding the rear of the heads is it cleans up the valley even more.
97f350stroker
New member
I used 1/8 npt to -6an adapter and a -6 45° swivel on the heads with a y in the valley. So I have 1/2 pushlock from my filters up to the y in the valley, then 3/8 braided out of the y to back of heads, and 3/8 braided from front of heads to regulator.
97f350stroker
New member
Chvyrkr
Active member
- Joined
- May 18, 2011
- Messages
- 2,204
- Reaction score
- 0
I think bottom line is like Dennis said...
If you're using xxx/xxx injector at x.x PW and not gettin a pressure drop, you don't need to mess with your fuel system.
But, there's nothing wrong with a little overkill
If you're using xxx/xxx injector at x.x PW and not gettin a pressure drop, you don't need to mess with your fuel system.
But, there's nothing wrong with a little overkill
earlybroncoboy
Member
97f350stroker
New member
No the lifting eye had to come off that was just before I mocked up the down pipe.
Thanks bronco boy.
97f350stroker
New member
Are you using a turbo kit from a vendor or fabbing your own? I used irates kit and the down pipe that came with it was perfect after massaging the firewall some.
