carl B
Enthusiast
Ok guys now I have the Roe S/C roller rockers headers, and a NX nitrous kit etc what fuel upgrade should I do
All your help would be appreciated
Carl
All your help would be appreciated
Carl
Fuel system upgrade?
- Thread starter carl B
- Start date
MadMaxx
Enthusiast
The roe setup came with rails and injectors right? What size injectors are they?
Are you doing a DP nitrous setup? What are you goals for the fuel system? Are there any non-stock fuel pumps (inline or other) already on the car?
Are you doing a DP nitrous setup? What are you goals for the fuel system? Are there any non-stock fuel pumps (inline or other) already on the car?
carl B
Enthusiast
the fuel system is stock
the injector size I can clarify next week
Carl
the injector size I can clarify next week
Carl
99 R/T 10
Enthusiast
what lbs. pulley are you going to run? Green top injectors are 50lbs, blue are the 42lbs'ers(5 lbs pulley).
MadMaxx
Enthusiast
Roe ships with 56lb/hr per website. I'm guessing thats rated at 100% dc. Those are 550cc injectors. You may want to step up to 720cc injectors (74lbs/hr roughly) if you decide to up the boost. 900hp V10 should require about 62lbs/hr@ 80% duty cycle. Nice flowing 720cc injectors can do this @ 80%.
As for fuel, you can use a single or duel inline pump setup. Duel pumps reduce the chance of fuel starve in the event of a failure, but means more plumbing. -10 lines should be plenty big to flow the fuel needed. Since you're working with the top feeds and custom rails, you have a lot more options for power growth than the stock (internal) rails.
As for fuel, you can use a single or duel inline pump setup. Duel pumps reduce the chance of fuel starve in the event of a failure, but means more plumbing. -10 lines should be plenty big to flow the fuel needed. Since you're working with the top feeds and custom rails, you have a lot more options for power growth than the stock (internal) rails.
carl B
Enthusiast
could have screwed up here!
When I ordered the kit from Sean and the 5lb pulley he didn't mention the injectors were different when you go up to the bigger pulleys
Perhaps I should talk to him and see if I should do the larger pulley and injectors now?
Since thats the way I will be going later anyways
Carl
When I ordered the kit from Sean and the 5lb pulley he didn't mention the injectors were different when you go up to the bigger pulleys
Perhaps I should talk to him and see if I should do the larger pulley and injectors now?
Since thats the way I will be going later anyways
Carl
MadMaxx
Enthusiast
I don't know if he offers an injector upgrade, his injectors should support ~700hp crank safely. I know that you can run larger pullies, but w/o intercooling you will get detonation. Some have rigged up alky/h20 injection to compensate for lack of IC, and are able to run ~2lbs higher boost threshold. You can dump a full tank of C16 in there and have a field day 
PS. My math is off slightly due to the fact I never trust injector ratings to flow what they say they will w/o a flow test. You can go larger and make it flow less fuel if needed, but not the other way around
PS. My math is off slightly due to the fact I never trust injector ratings to flow what they say they will w/o a flow test. You can go larger and make it flow less fuel if needed, but not the other way around
Simms
Enthusiast
I beleive no matter if its 5lb or 8lb Sean gives you the option of injector size. As 99 RT/10 said, the 42lb/hr are standard with the 5lb pulley, but you can upgrade to the 50lb/hr injectors and still run the 5lb pulley. The 50lb/hr injectors are required for the 8lb setup as well as an MSD voltage booster. 1TONY1 uses a Kenne Bell boost-a-pump instead.
I have also seen 10lb setups still using just a voltage booster. Other combo's using water/**** or similar injections take advantage of the addition fuel to keep the air fuel safe. Some are also runing a 10lb pulley with better flowing heads (with less compression) to keep detonation down. A good tuner can work with you for different combinations.
I have also seen 10lb setups still using just a voltage booster. Other combo's using water/**** or similar injections take advantage of the addition fuel to keep the air fuel safe. Some are also runing a 10lb pulley with better flowing heads (with less compression) to keep detonation down. A good tuner can work with you for different combinations.
carl B
Enthusiast
well I hope the 50lb/hr are what is included in my kit.
It was never mentioned when I ordered it though?
It should arrive Tuesday!
I am looking for green top injectors........right?
Thanks again!
Carl
It was never mentioned when I ordered it though?
It should arrive Tuesday!
I am looking for green top injectors........right?
Thanks again!
Carl
If you do an external fuel pump...I recommend not sticking it in the drive shaft tunnel due to it being a bit noisey in there. Macedos sells I think..some rubber mounts for the external pumps. The Viper is noisy as is so I am going to relocate my pump soon somewhere else to keep things quiet.
I don't know if Roe uses a return line or not, but you may want to put a fuel cooler on it also to keep the heat down on it. Cost is minimal to do.
I don't know if Roe uses a return line or not, but you may want to put a fuel cooler on it also to keep the heat down on it. Cost is minimal to do.
Simms
Enthusiast
If you get the 42lb/hr injectors, I am sure you can exchange them with Sean and just pay the upgrade cost. It used to be $100 more for the 50lb.
carl B
Enthusiast
The news is good!!
The kit arrived yesterday and I see there are the 53/lbs injectors in there so we should be good for now!!
Am going to go with a different fuel pump setup later
Carl
The kit arrived yesterday and I see there are the 53/lbs injectors in there so we should be good for now!!
Am going to go with a different fuel pump setup later
Carl
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