P2R fuel rail
12-14-2009, 08:46 AM
#3
i dunno what the point is, it's underneath the manifold so u will no see any of the rails practically.
and then u'd need a FPR to regulate it since the flow is increased since pressure is decreased.. I could only see it causing problems VS solving problems.
and then u'd need a FPR to regulate it since the flow is increased since pressure is decreased.. I could only see it causing problems VS solving problems.
12-14-2009, 10:03 AM
#6
for the price... it damn well better add to the appearance of the motor.
but either way it is pointless unless u are boosted heavily.
even w/o upgrading the pump u would be DUMPING fuel in, in comparison due to LESS pressure.
less pressure = more flow and viceversa.
but either way it is pointless unless u are boosted heavily.
even w/o upgrading the pump u would be DUMPING fuel in, in comparison due to LESS pressure.
less pressure = more flow and viceversa.
12-14-2009, 10:15 AM
#7
Even with them being 169 they would cost you $1000 + to get the most out of them.
rails,ecu,harness,fpr,injectors,pump.maybe even bigger lines if your trying to build rediculas HP
Those rails are just one piece to the puzzle.
I'm glad to see more and more being available for our engines
rails,ecu,harness,fpr,injectors,pump.maybe even bigger lines if your trying to build rediculas HP
Those rails are just one piece to the puzzle.
I'm glad to see more and more being available for our engines
Last edited by richardparker; 12-14-2009 at 10:17 AM.
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12-27-2009, 07:05 PM
#13
Instructor
These fuel rails flow a lot better than the stock fuel rails. We are running these fuel rails on our All Motor race car with great success. we have more steady fuel pressures, as the fuel rails flow a lot smoother than oem rail.
The price on the fuel rails are pretty good. A average fuel rail for a 4 cylinder engine sells for $119-$149, and that's only for 1 fuel rail, as these are 2 fuel rails.
This mod does require custom fuel lines, etc
After we put the engine back into the accord, I will take some pictures of our setup.
12-27-2009, 07:34 PM
#14
not many people will have taken off their fuel rails and let alone looked inside
but as said before most people will only actually do bolt ons, so most people will not need them, but THANK YOU for making them for us more serious modders
also can you maybe go for adjustable cam gears next
but as said before most people will only actually do bolt ons, so most people will not need them, but THANK YOU for making them for us more serious modders
also can you maybe go for adjustable cam gears next
12-27-2009, 11:06 PM
#17
would be kinda hard with not knowing what type of fuel pressure regulater and such people would be running, and were it would be mounted
, so too many variables
i guessing that they proably would have screw in pipe thread fittings, which you can easily get AN adapters for, or a barb fitting if you must
, so too many variablesi guessing that they proably would have screw in pipe thread fittings, which you can easily get AN adapters for, or a barb fitting if you must
12-29-2009, 11:41 AM
#18
Whats up with RDX owners?
iTrader: (9)
Sean, Ill be contacting you in the a few weeks for these.
12-29-2009, 12:29 PM
#19
Bleed Honda Blue
Here is my old post. Ran larger injector with 100 psi fuel pressure on stock rails (had to modify rails a little). I Had 3.5L, intercooler and 12 psi of boost. Eventually I had to stop adding HP as my transmission was breaking every few thousands miles. 
https://acurazine.com/forums/2g-cl-2001-2003-50/my-newest-mod-458395/
https://acurazine.com/forums/2g-cl-2001-2003-50/my-newest-mod-458395/
01-30-2010, 08:21 PM
#25
9th Gear
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02-25-2016, 02:54 PM
#26
This threads pretty old but didn't want to start a new one and have been researching the p2r fuel rails. I've read some posts stating these are for boosted cars and improve the gas flow quite a bit! Currently I'm working on exhaust for my TL then going to do the j37 IM swap with TB and larger cai. Eventually I'll do the j37 forged crank, J37 forged rods and 05 RL forged pistons and rings. Are the fuel rails something at that point after those mods that would improve anything? Or for the price and since I'm not boosted are they a waste of money? Seems like a lot have these installed but have seen mixed reviews. Was hopping after 5-6 yrs more info would be available as more are doing j-swaps or since the j35's and j37's are out of there's a cheaper more beneficial fuel rail like an oem one.
02-25-2016, 03:37 PM
#27
3.5 psi
iTrader: (1)
not many have these installed. At least who post here.
My guess would be that if you're going to have an n/a 3.6 stroker down the road your stock setup would be fine. Are you planning on tuning? You would maybe benefit from bigger injectors (RDX) at that point but you wouldn't be needing the additional flow the boosted guys need for their setups.
My guess would be that if you're going to have an n/a 3.6 stroker down the road your stock setup would be fine. Are you planning on tuning? You would maybe benefit from bigger injectors (RDX) at that point but you wouldn't be needing the additional flow the boosted guys need for their setups.
02-25-2016, 03:47 PM
#28
The build thread on NSX Prime with the guy installing a J35 into an NSX mentions these. His experience was fairly negative as he had issues with the upper portion of the injector seating into the CNC-cut holes in the rails. He was using an OEM-style injector and his consensus was they were not really what the rails were designed for, but it didn't seem obvious that there would be a problem.
That said, I don't see a reason that you should have much of a need for something like that with your currect power goals for any reason other than a bling factor. Any fuel upgrades would need to be accounted for with a tuning solution, anyway. My recommendation would be to get a set of J30A4/5 or J32A3 (same part number as many early second-generation J-series engines) lower runners and fuel rails, six RDX injectors with pigtails and run those. As long as you're not going for a power levels over 400hp, that setup should suffice.
That said, I don't see a reason that you should have much of a need for something like that with your currect power goals for any reason other than a bling factor. Any fuel upgrades would need to be accounted for with a tuning solution, anyway. My recommendation would be to get a set of J30A4/5 or J32A3 (same part number as many early second-generation J-series engines) lower runners and fuel rails, six RDX injectors with pigtails and run those. As long as you're not going for a power levels over 400hp, that setup should suffice.
02-29-2016, 08:48 AM
#29
Instructor
Hi
Its been quite some time since we last posted on here.
We have been selling a lot of these fuel rails to the swap car market. Guys with Civics and J Swaps. We sell at least 2 sets of rails per week.
So they have been working out good for most people.
We have designed the rails to work with a factory style injector only. So if going with aftermarket injectors, you need to buy a injector that's the same dimensions as the stock injector.
Its been quite some time since we last posted on here.
We have been selling a lot of these fuel rails to the swap car market. Guys with Civics and J Swaps. We sell at least 2 sets of rails per week.
So they have been working out good for most people.
We have designed the rails to work with a factory style injector only. So if going with aftermarket injectors, you need to buy a injector that's the same dimensions as the stock injector.
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