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Thread: Quick update..... cylinder head work

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    Quick update..... cylinder head work

    Managed to swap the old carb (Methanol.... well duh !! and an inlet manifold) for a set of heads (in need of work) and a Turbo 400 box.....
    Heads are Oval port, hence the sale of the manifold (which was rectangle port - and wouldnt have started to work until 6500), in a very sorry state, rusty, bare and need welding and machining due to a dropped valve - BUT - they are one of the best casting numbers for a BBC and flow VERY well....
    Couple of pics - highly exciting !

    Nothing really exciting here.....


    Err HELLO..... how big are these
    Inlet on left, Exhaust on right, undercut for greater flow as well, not cheap at £15 a pop though, and im only using these as dummies due to the work I need to do in the ports and chambers


    And just to give you an idea of scale, this is a 50p sitting on the inlet valve


    There not the smallest things in the world - and these are 'tame' by racing stds!!!

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    Administrator Moby-Dick's Avatar
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    did you go to T&L ?
    my Virtualisation Blog http://jfvi.co.uk Virtualisation Podcast http://vsoup.net

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    Va Va Voom Lowe's Avatar
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    Jesus H... those valves are huge man!

    Great pics mate, keep us informed

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    Missing in Action CocoPops's Avatar
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    It's like an engineering school watching your updates.

    Keep em coming.

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    Quote Originally Posted by Moby-Dick
    did you go to T&L ?
    Not yet, havent had a chance (have been on a Team Leader course ) hope to get something sorted over this weekend.

    Next episode - polishing and porting the heads - im guessing 30 hours work at least

    (edited for poor grammar )
    Last edited by IainB; 15-04-2004 at 10:41 PM.

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    Quote Originally Posted by Moby-Dick
    did you go to T&L ?
    Just gave them a call - not something they would want to take on..... bottoms, awaiting a call back from my normal engine parts supplier, though they WONT be cheap to fix something like this

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    Oh bottoms,
    Just got back from Real Steel (my parts suppliers) apart from the damage I knew about in one chamber, there is also damage on the next chamber down, I also noticed that a guide had fractured - so they measure all the other guides...... which are all out of tolerance
    Total estimated bill just for machining = £450
    Total cost of valves = £250
    + cost of springs, caps and retainers works out at BIG £££££
    Looks like it will be cheaper to import a built set of alloy heads in from the US......
    Big Fat Bottoms

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    Missing in Action CocoPops's Avatar
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    doh!

    Nothing seems to be going smoothly for you at the mo Hope things improve.

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    HEXUS.timelord. Zak33's Avatar
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    that is NOT a valve....

    it is a Dustbin lid on a Scafolding pole
    .
    Quote Originally Posted by Advice Trinity by Knoxville
    "The second you aren't paying attention to the tool you're using, it will take your fingers from you. It does not know sympathy." |
    "If you don't gaffer it, it will gaffer you" | "Belt and braces"

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    Quote Originally Posted by CocoPops
    doh!

    Nothing seems to be going smoothly for you at the mo Hope things improve.
    This car has nearly bankrupted me, practically had me in tears, and make my wonder WTF am I doing ..... but it makes me WANT to run bloody fast, if I cant get this thing to lift its front wheels.... im not trying hard enough


    Quote Originally Posted by Zak33
    that is NOT a valve....

    it is a Dustbin lid on a Scafolding pole
    The question is - do I go for bigger valves if I get alloy heads, which are MUCH lighter than than these cast iron ones, less weight = I go quicker

  11. #11
    'ave it. Skii's Avatar
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    And it'll STILL cost less to run than a mini-metro

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    Go for the inported alloy heads, at least they will be stress free, easy to work on and above all a known quantity.

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    Small update, not much has moved on this - mainly been sorting out the garage.... which has resulted in money my way due to E-Bay auctions (never knew original Mexico badges were worth so much - glad I didnt bin them now!!)
    Anyway, one of the places I originally asked, mailed me back with a solution to the damage following the dropped valve, I had been thinking about getting them welded, they have suggested just machining out the old seats and putting new ones in.... which is what im going to do.
    This way I learn how to prep heads from scratch, along with a bit of gas flowing - have also bought a set of roller rockers (S/H mind) so the top end is ever so slowly coming back together.....

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