1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

.48 vs. .60 a/r

Discussion in 'Forced Induction' started by Red Civic LS-T, Nov 13, 2006.

  1. Red Civic LS-T

    Red Civic LS-T New Member

    Messages:
    19
    Likes Received:
    0
    Joined:
    Sep 11, 2006
    .48 vs. .63 a/r

    I have a 92 Civic CX hatch with a bone stock JDM B18B and a JDM B16 LSD transmission. Currently, I am running a T3/T04B turbo with a 50-trim compressor wheel and .48 exhaust. I will be upgrading soon to a T3/T04E turbo with a 57-trim compressor. When I buy the new turbo, should I stick with a .48 exhaust or move up to a .63? This car is mostly street-driven, with some occasional trips to the drag strip and autocross track.

    After installing the new turbo, I will go back to the dyno and get re-tuned. Will I notice a significant power gain with the .63? How much longer will it take to spool this turbo? I have a 2.5" downpipe (no cat) and a 3" catback.

    Thanks in advance for your input.
     
    Last edited: Nov 13, 2006
  2. pissedoffsol

    pissedoffsol RETIRED

    Messages:
    49,693
    Likes Received:
    53
    Joined:
    Sep 28, 2002
    Location:
    Retirement Home
    i'd go with the 63 regardless. the spool time is maybe 2-300 rpms difference. and with your b16 tranny, you won't fall out of boost range on shifts.
     
  3. turb2o_vtec

    turb2o_vtec New Member

    Messages:
    50
    Likes Received:
    0
    Joined:
    Dec 11, 2006
    Definially get the .63 a/r. You'll thanks us later.
     
  4. spoolin@idle

    spoolin@idle D Series FTL

    Messages:
    93
    Likes Received:
    1
    Joined:
    Nov 13, 2006
    Location:
    Kansas City
    I do agree with the .63 a/r

    Your spool times will probably be about the same with a 3" turbo back as the .48 a/r on a 2.5" exhaust honestly. It's all about flowing the CFM's.
     
Verification:
Draft saved Draft deleted

Share This Page