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  1. Jo3_Blo

    Jo3_Blo HZ Holden Fanatic

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    Gees, there's still a fair bit of money involved. $2500 upwards.

    And another thing I have to factor in is that I will be governed by the new P plate laws. But then again the cops won't really be able to tell that my motor is that modified will they? Are the YT heads look exactly the same as the stock ones?

    And another thing, if I get my motor rebuilt I would probs build it so that it can run on GAS or Unleaded or probably both.

    If the time comes, I'll probs just rebuild it to fairly stock specs, maybe a cam or something, I dunno, we'll see when the times comes.

    Thanks for the info Pub!!
     
  2. Pub247

    Pub247 Well-Known Member

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    yella terra look stock beside mainly yellow paint doesnt mean they got to be yellow though you wouldnt be able to tell with out removing manifolds though double valve springs might indicate performance.
    If your going gas or unleaded a dissy regraph will be in order. My last 202 in the vh had that much compression and the original dissy that it was utter rubbish unless i put 98 in it and itd still ping even then.

    Buy an exchange head is the easiest and cheapest way to run gas hardened seats and valves in it so recssion doesnt become an issue
     
  3. leigh 7005

    leigh 7005 New Member

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    starfire rods $500 balanced and all the rest all ready
     
  4. leigh 7005

    leigh 7005 New Member

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    pub247 whats the diffrence between blue heads and black efi heads?
     
  5. Pub247

    Pub247 Well-Known Member

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    blue black and efi ones have minor differences depending on which model it came from some say efi flow a little better but i doubt they do only main difference is they dont have the air injection ports on exhaust which could improve flow slightly. Hence why i said get an efi one.
    Blue you have two main types with the 173 aka 2.85lt head and the larger 202 aka 3.3lt head. I put a blue 173 head on my VH and rebuilt the yella terra one on it the compression was crazy with flat tops so i suggest not doing that
     
  6. Jo3_Blo

    Jo3_Blo HZ Holden Fanatic

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    Nah, I'm intending to stay carby. Don't want the expense/hassle of converting to EFI.
     
  7. Pub247

    Pub247 Well-Known Member

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    thats cool you can still run carby with a 12 bolt head efi or otherwise you just need manifold to suit which can either be an aftermarket one or a stock blue black carby manifold. efi jead is the way to go i reckon they cost the same as a carby head so its no big deal
     
  8. Jo3_Blo

    Jo3_Blo HZ Holden Fanatic

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    Yet they give better performance? And fuel economy perhaps? And they recquire no other modifications to fit onto the motor?
     
  9. Pub247

    Pub247 Well-Known Member

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    umm depends which block your starting with efi head might gain alittle especially if rebuilt with good carb and manifold
    i dont think theyre a direct boltonto a red motor some new water jacket holes have to be drillied into block not reallly an issue blue blue is fine
     
  10. Jo3_Blo

    Jo3_Blo HZ Holden Fanatic

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    Yeah, mines a Bluey.

    So what exactly is the aim of putting an efi head on there? Longer lasting? Better economy?
     
  11. Pub247

    Pub247 Well-Known Member

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    if yours is a blue motor i wouldnt bother awapping heads unless your rebuilsing it
     
  12. Jo3_Blo

    Jo3_Blo HZ Holden Fanatic

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    Yeah, i won't bother doing anything to it unless I have to rebuild it.

    But so to speak, what is the benefit of using the EFI head over the original one if I'm not converting to EFI anyway?
     
  13. Pub247

    Pub247 Well-Known Member

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    maybe a slight improvement to flow and you dont have the air injection bosses on the exhaust ports. INote that some blue mtor dont have air injection either but they got the lump in the ports in think been a couple of years since i mucked around with a 202 and really take much notice of them at work anymore
     
  14. Jo3_Blo

    Jo3_Blo HZ Holden Fanatic

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    Oh ok, thanks for that.
     
  15. vh2env

    vh2env jesse

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    heyy guys i got a vh202 blue block im on ma ps in nsw wat kinda mods can i do to make it run that extra bit better? thanks
     
  16. Jo3_Blo

    Jo3_Blo HZ Holden Fanatic

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    All the things pub and leigh 7005 said are relevant to that question.............

    So you know, the 202 in my WB is a blue motor as well, so it makes no difference to you to do the same mods as they suggested for me.
     
  17. JoshSvc

    JoshSvc New Member

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    I'm abit biased i love my straight 6's.. if you really want a 6 then build it but if deep down you want a v8.. starting building one now for when your off your P's
     

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