Go back to home



We have detected that you are using ad blocking software.
The MR2 Australia forum is made possible by ad revenue.
Please disable your ad blocker to ensure that this site lives on.

Hot!Top feed fuel rail options

Author
DamMR2T
MR2 Aficionado
  • Total Posts : 132
  • Scores: 10
  • Reward points: 3429
  • Joined: 2011/04/07 19:51:15
  • Status: offline
2018/06/21 14:22:25 (permalink)
0

Top feed fuel rail options

Hi guys

I'm after a fuel rail for my 5SGTE (gen3 head, st215 manifold). I have Bosch 2200 injectors and had a couple of questions:
1. What top feed fuel rail does everyone use RacerX, OBX, st215?
2. Will 2200cc injectors fit using st215 rail? Does this rail have enough flow?
3. What size injector hats are required for 2200cc?
4. Where in Sydney can injectors be flow tested and matched?
#1


3 Replies Related Threads

    TonyMR2
    MR2 Deity
    • Total Posts : 476
    • Scores: 46
    • Reward points: 1639
    • Joined: 2014/08/06 20:15:11
    • Status: offline
    Re: Top feed fuel rail options 2018/06/21 16:00:07 (permalink)
    0
    1. Racer X is cheap. ATS Racing, Hux Racing is said to be supreme cnc part of bracket / not leak / flex as per the difference in the brackets and more expensive. Lots of people use both, lots of opinions. Fuel buy the best.
    2. Aftermarket Rail will flow fuel (enough). Fuel supply to the line from a single walbro 460 (largest) will run out of fuel supply at about a 1500cc injector. Rail is not an issue it’s the fuel supply as in lines, filters, pressures and pumps needed - and other fuel flow issues.
    3. The rails dictate the hats - 14mm from memory.
    4. Put your injectors into a postage bag and Zane at Injectors Online in Melbourne is where I have used and recommend (even been based on Brisbane). They can flow test. Injectors can’t be flow matched as in adjust what you have to match, your injectors will be dynamically different. Few people use the 2200cc injectors and for a fine tune use fuel trims, open loop idle and other tricks to make them closer to matching and working.
    #2
    DamMR2T
    MR2 Aficionado
    • Total Posts : 132
    • Scores: 10
    • Reward points: 3429
    • Joined: 2011/04/07 19:51:15
    • Status: offline
    Re: Top feed fuel rail options 2018/07/02 19:16:12 (permalink)
    0
    Thanks Tony.
    Yes RacerX is cheaper and newer. I was leaning towards this but already have an ST215 rail so that is cheapest. But the last thing I want to do is run lean.
    I will have a fuel pressure sensor, but was considering running bigger lines all the way from tank. Based on your figures its a must.
    I wanted to know what size hats for all the different rails, but mainly RacerX and ST215. I been meaning to check the ST215 rail myself, but if someone already knows great.
    My bad, when I said matched, I have more than 4 injectors so wanted to match the best 4 in terms of flow being the same.
    #3

    Mrskylighter
    MR2 Deity
    • Total Posts : 2138
    • Scores: 169
    • Reward points: 3924
    • Joined: 2011/04/07 19:51:15
    • Location: NSW Australia, Hills District
    • Status: offline
    Re: Top feed fuel rail options 2018/07/02 22:23:52 (permalink)
    0
    Does the st215 rail even attach to the gen3 head? Racerx seems to sell gen3 and 4 specific aftermarket rails so maybe the mounting is different or something?

    1989 AW11 Gen3 3sgte
    #4
    Jump to:

    © 2018 APG vNext Commercial Version 5.5