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Custom fuel rail and some feedback please

I have a few questions and would appreciate any feeback.

I have the OEM fuel rail ok.

I have a -8 feed and -6 return


I want to put the return in the cold start injector hole and put another feed to the rail where the odl return was. I was wondering if I did that would it work that way? reason being is that since the feed from the back flows fuel, would it go straight out? The cold start (now going to be the return is about 2" 's away from the feed.

Ok now the other feed (old return) will feed 4 injectors and the flow would follow to the return from another angle.


Do you know what I am trying to do?

I will basically have 2 -6's from the rail from each side going to a Y fitting which then goes to my -8 feed line.
I am trying to have so the fuel is going from both side of the fuel rail. I know if I tapped another hole in the middle it would be better but the cold start is no longer used anyway.

and as I said a -6 return.

I have a Aeromotive A1000 pump with a sump in the tank as well as an Aeromotive regulator.

Can anyone help me out here? Thanks


PS; Would a -6 return be to much? I know a few people that have that and bigger.

Duane

 

Here is a pic. This pic you can see the 3 holes on top of fuel rail.

The feed line from one side that is OEM is there and next ito it about 2"'s is the OLD cold start (not being used) and then the new feed line from the other side (old return line)

I am or hoping to if it works or should work have the -8 from the tank to a Y then they will have to -6's to the rail then a -6 out. I hope I am not making this confusing.

thanks

here is a link to the pic as I can't upload it??


http://www.supraforums.com/forum/sho...60#post1313560

 

hey man thats for droping buy and showing me everything got a crazy setup that turbo looks like a hairdyer its so huge haha

 

Hey its you. LOL A GT name with a trans am.

Duane

Thanks

What feedback you got?

 

why does everyone knock the gt??? jeez........

 

I am going to have Hogans make my new ones(Hogans intake). no feed back yet.

I will be running a -6 feed and a -8 return. this keeps the FPR doing its job with out restrictions. Other then that your idea should work fine. I am going to feed mine at the front and return at the rear on both rails. I alos pln on feeding the N2O system off the back of the rails.

the big reason for larger return then feed is some pumps will just flat "Out volume" your return and drive pressure up throwing your tune all to heck.

Good luck man!

 

Just so I got this straight:

You have one -8 coming fromt he fuel pump, into a Y fitting splitting it into two -6 lines to feed the rail, then one -8 fitting coming out of the rail to the AFPR? Correct?

As Ellis stated, I'd run one size larger from the rail to the regulator so there won't be any overrun problems. I think the Aeromotive regulator you are talking about has a -10 inlet anyway so I'd just run a -10 from the rail to the AFPR. Then you can have whatever size your return line is, coming out of the AFPR to the return line back to the tank.

Mike

 

I agree its important having a large enough return to not create a restriction, but some of the sizes being used around here have me wondering.

Ellis, I just wanna check and make sure I understand correctly, you're planning using a -6 Feed line from the pump, to the rails, to support the motor, and then will also be tapping between the rail and regulator to feed the Nitrous system also. I just don't think thats a large enough feed line.

I'm using a -12 Sump, -10 Line from the tank, Y'd into dual 8s into the rails. I'm hoping my #8 return is enough for this pump I got..... -10 Line and fittings are expensive (Let alone -12!)

 

hehehe. I know how spendy that big stuff is. My last system was #10 splitting into #8.

Yes I Will be running #6 or #8 for the feed. I have been researching and with the higher pressure the need for huge line is not as needed as with low pressure systems. a #6-#8 line should flow enough at 50PSI to do what I need.

BTW what do you think of those new Edelbrock High fuel pressure split nossles? http://www.edelbrock.com/automotive/...rous/72550.gif
If I run them I can use the Feed off the rails for the Juice. In which case I will definately go with a #8 feed and #10 return.

I will obviuosly be using an after market fuel tank
http://www.ls1speed.com/catagory.cfm?catagory=fuel
Half way down.

Right now I am just working on getting the motor together. I have decided to up the CR so I need new pistons also. Looking like they will have to be custom pistons

any thoghts?

 

Ok guys thanks for the input.

I have been doing alot of research and I have also spoken to Aeromotive.

I have an A1000 pump with a -10 from the sump with a -8 to the fron as required by Aeromotive then a -6 return. I decide now to go with a -8 feed on on eside of the rail by simply tapping the rail froma -6 to a -8. (which I thought couldn't be done because wall thickness. I also thought the 720 injectors would need more flow. I have spoken to a few people and with everyones input I have everything I need!

Thanks alot guys!

Aeromotive is pretty helpful to

Tell them what you are doing and they help you out. (if you have there products.

Duane