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porting and polishing

Discussion in 'Engine Building' started by Ignorant import guy, Mar 17, 2006.

  1. Ignorant import guy

    Ignorant import guy Senior Member

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    can somebody explain to me how much a port and polish job typically costs and what new parts are needed after the machine work is done...i think i was told new valves were needed...if that's so where can i get a good set of valves and what size will they need to be?
     
  2. VTECin5th

    VTECin5th Administrator

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    $billion.5
    Valves/seals/toothbrush
    39.4inches.


    WTF?
    You didn't tell us what car, what head,what motor... are you just porting the head, or are you also match-porting the manis?
    New valves are usually suggested but not always needed?
     
  3. Ignorant import guy

    Ignorant import guy Senior Member

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  4. MikeBergy

    MikeBergy Blah blah blah....

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    do it yourself!!! it's not that hard. seriously, and on a head that cheap, if you mess up, you can spend like $50 and get a new one. Regardless of who does the porting, new valves aren't needed unless you have messed up ones, or are getting larger valves, obviously. You just need to get a good multiangle valvejob done by a reputable shop, as a good valvejob is where you are going to gain most of your flow anyway. New valveseals, and cleaning job on the head, and you should be set. I recommend upgrading the valvesprings if you are going for performance, in order to rev a little higher, but it's not necessary.
     
  5. 97CTR

    97CTR Senior Member

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    Ok hold on, were talking about porting a d16y7 head. Thats like putting 20's on a geo metro. Save your money for something else, maybe a turbo, engine swap, head swap etc.
     
  6. Ignorant import guy

    Ignorant import guy Senior Member

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    hey thanks for the info on the porting.....and well i originally wanted to swap the engine to a b16a2, well i'm 16 which means limited funding, so that and like one other thing would be all i could do so i was told it would smarter to port and polish the head to get the maximum result out of a used turbo kit i plan on buying.
     
  7. 97CTR

    97CTR Senior Member

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    save your money on the port and polish and use it for something else
     
  8. Ignorant import guy

    Ignorant import guy Senior Member

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    ok, do you think i should listen to the guy about valve springs though because i do want a turbo on my car eventually
     
  9. Ignorant import guy

    Ignorant import guy Senior Member

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    well i'm buying a stage 2 cam
     
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