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Valve Clearence Issue?

Discussion in 'Engine Building' started by noobvang, Jun 9, 2003.

  1. noobvang

    noobvang Senior Member

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    Ok, heres the set up. Your typical mild ls/vtec build:

    B18a w/

    ls crank
    ls rods
    pr3 pistons
    redecked block to .010
    b16 head milled/ resurface .15
    CTR intake cam
    ITR exhauste cam
    OEM 3 layer head gasket

    The question is:

    Is there going to be any valve to piston clearence problems?

    And am I safe running 93 octane pump gas w/ this set up? My CR should be 11.6 or 11.9

    Any info would be great.
     
  2. pills_PMD

    pills_PMD Super Moderator

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    i have 81.25mm pr3 pistons on LS rods with the head milled .020" , ctr intake cam, itr exhaust cam, ls crank....

    i have no valve clearance issues at all and use an OEM headgasket and run 93 octane fuel , tuned with hondata.

    i used the c-speed CR calculator and came up with 12.3:1 or so on that setup
     
  3. noobvang

    noobvang Senior Member

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    12.3:1!!!! Damn that high (for me). So will I be safe running w/ 93 octane with out any tunning on the ecu. It's gonna be kinda hard for me cause i'm running OBDII. Will I be OK to use a ITR or CTR ecu?
     
  4. Tre

    Tre Member

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    pills: did u shotpeen your rods?
     
  5. pills_PMD

    pills_PMD Super Moderator

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    you'll need some form of tuning... at least a vafc.. you're about to be running like 10%-15% to lean.. my car was nearly 20% too lean using a stock GSR map.

    my rods were not shotpeened either
     
  6. noobvang

    noobvang Senior Member

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    Well, this sucks then. I am still gonna put the head and block together, any timing setting that you would recomend? How much did your hondata cost you pills? I have a OBDII to OBDI conversion harness already.

    Any one want to trade a OBDI p72 for a OBDII p72?
     
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