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Differences between heads

Discussion in 'HYBRID -> ED-EF / DA' started by duckett, Jul 8, 2007.

  1. duckett

    duckett New Member

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    Hello,
    Newbie here, I did search :)
    Just a silly question, are there any differences between a B16a and a B18C head?
    I've a B16A1 engine and there's a B18 head going cheap, I'm eventually going forged internals and turbo, but plan to collect an engine [1.6] and build it up whilst running around stock. The head doesn't come with cams but does include retainers and valves, it has also been skimmed to .004thou

    Thanks alot.
     
  2. civicious

    civicious FüK-VTEC VIP

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    Assuming you're referring to a B18C SiR-G (JDM) or B18C1 GSR (USDM) head, the stock B18C head will yield a slightly higher compression (around 2 tenths, I believe) than the B16 head, and a bit more if it's been milled; however, with a GSR/SiR-G head you have limited choices as to what intake manifold you can use (because they used a different bolt pattern for the intake manifold).

    Me, personally, I'm pro-GSR, simply because you get the additional compression for free.
     
  3. duckett

    duckett New Member

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    As far as I know it's a B18C4, from an ITR [I'm in the UK]
    If it has a different intake then it's probably not worth the buy huh, better off getting a stock B16, port/polish and cams.

    Cheers
     
  4. duckett

    duckett New Member

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    It's a B18C from a UK ITR as far as I know.
    Probably not worth taking on then, better off with a B16 and work off that.

    Cheers
     
  5. duckett

    duckett New Member

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    Is it worth it?
    I think just because it doesn't offer any big advantage [larger valves etc] and I'd have to get either an OEM or aftermarket mani as well
     
  6. civicious

    civicious FüK-VTEC VIP

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    If it's from an ITR, it's the equivalent of a USDM B18C5, and has the B16-style intake manifold. It's pretty much a B16 head with a slightly upgraded valvetrain, and supposedly flows a bit better than a regular B16 head.

    If it is in fact an ITR head, and you can get it for a good deal, I'd get it if I were you.
     
  7. duckett

    duckett New Member

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    Thanks for your replies.
    I'm not too hot on Hondas, or modifying for that matter, just getting into the swing of things.

    I'll find out exactly what head this is, and will let you know.
    Also chopping and changing from belt charger and turbo.. :)
     
  8. eg6sir

    eg6sir Supa Mod Moderator VIP

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    if its the ITR b18c, definitely get that over a b16 or GSR if you get a good deal
     
  9. duckett

    duckett New Member

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    bah, turns out it's a B18C4 head, advert stated

    "it would be ideal for a port/polish replacement for your ITR instead of sending your current head off"

    Back to the drawing board.
    tata
     
  10. duckett

    duckett New Member

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    It's more of a notepad.exe with a parts list, changes daily from what I can find, it's turning into some sort of DIY supercharge plan.

    Firstly I planned to find a B16a1 engine and build it up [pistons/rods/rings...springs/cams] and topping it with a supercharger or turbo. Just by chance I'm offered all sorts of Honda parts, most of which turn out to be useless to me. If I had found a cheap ITR head then it would be used with a B16 block.

    This way I don't have to drop the lump out of my car, I have access to a garage [with ramp] but only really over a weekend, so this is the best way to go, build a lump then drop it in over a weekend...in the future.
     
  11. eg6sir

    eg6sir Supa Mod Moderator VIP

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    b16 block is pointless to use.. if you plan on getting an ITR head.. at least mount it to a GSR block
     
  12. duckett

    duckett New Member

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    GSR's what...B18 in the UK? The liners are thinner, ASAIK the B16A block can take alot of power with stock liners, and I've heard of people sleeving them and having overheating issues, but running fine without. I'd rather run that, but what are your expeiences? Just going by what people here in the UK have found.

    As for the head Blanco, I was going for skunk2 or B16B cams, adjustable gears, port/polish, nothing overzealous.
     
  13. duckett

    duckett New Member

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    I see I was under the impression that they were alot thinner than the B16 blocks.
    Anyhow, B18C4's go for around $1000 over here [block/head/ancillaries] Not much more than a B16A...hm.

    Then comes more questions, B18C4 is OBD1?
    Thanks for all the help seems my ideas are way off :)
     
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