flow results abf head

Discussion in '16-valve' started by smarte00, Jan 14, 2009.

  1. mr hillclimber Club GTI Supporter and Sponsor

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    Thanks.:)
     
  2. mr hillclimber Club GTI Supporter and Sponsor

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    No offence taken at all... it's a bit like me saying "yeah just grind area abc and you'll get results of xyz".

    You can see a bit of it in the pic above, it still has the outer clading to go on and a stainless top... we want it to look as pro as possible for our own desires and for our (flowbench) project to be taken seriously.
     
  3. Ben S

    Ben S Forum Junkie

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    G60 can't be THAT clever if he bought a MK3!

    :-P
     
  4. Matt82

    Matt82 Forum Addict

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    mk3 buying involves a higher level of inteligence that you noooobs just dont understand either

    HTHTHTHTHTHTHTHTH
     
  5. Mike_H Forum Addict

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    He's just looking for a good Mk1 or Mk2 shell to transfer it all into ;)
     
  6. Mike_H Forum Addict

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    What make is that manifold - Supersprint? Looks a tidy bit of work.
     
  7. G60Dub

    G60Dub Forum Member

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    Were going a bit off topic here?

    I'll start a new thread in general chat entitled 'Rip G60Dub' if you guys like? :lol:

    ^^ Funny you say that Mike. I was actually looking for a MK2 to stick my written off MK3 16v into but all the MK2 owers must have been smokin crack at the time; MK2s were just too expensive so I got another MK3. MK2s are rattly old tinboxes anyway :lol: ;)
     
  8. Neal H Forum Member

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    Obviously not seen my mk3 then. Re-defines snotter!! :lol:
     
  9. Mike_H Forum Addict

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    Well, at the risk of dragging an old joke too far, if you're still trying to see sense, my mate in Perth has a Mk1 rolling shell he's thinking of selling - he's done most of the welding it needed (wasn't bad for a Mk1, and just needs back arches I think). He's trying to reduce the number of projects he's got on the go [:D]
     
  10. mr hillclimber Club GTI Supporter and Sponsor

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    It is indeed, I believe it's their conversion manifold for a MK1, thats what it's going in.
     
  11. Mike_H Forum Addict

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    Yeah, I was looking at their site this morning. Looks a nice bit of kit - not cheap, but definitely better designed and made than the Ashley tat.
     
  12. Neal H Forum Member

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    Nothing wrong with Supersprint. I have had a sytem of theirs for eight years now.
     
  13. G60Dub

    G60Dub Forum Member

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    That is an endeavour I would jump at if it wasn't for the fact I have nowhere to store or work on said shell! Bane of my life to date. [:x] [:^(]
     
  14. mr hillclimber Club GTI Supporter and Sponsor

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    At last... exhaust flow results for the ABF.

    I'll do a chart soon with the full lift comparison between std and modified, but flow is up at all points like the inlet, with a peak of 92.5cfm, up from the standard port of 78.3

    There are many opinions as to the ratio between inlet and exhaust, but the "general" ratio required is for the exhaust to flow around 70% of the inlet (some say more, handy for full on engines, some say less, enough for road engine). With our 136cfm inlet we have 68% exhaust flow with the 92.5 cfm... pretty much on the money I think.

    More flow could be found with a decent shape valve as the standard (new genuine VW) valves being used are quite thick at the stem to vave head join... I think the flow would be messed up a bit if a valve head dropped off if I thinned down/weakened that area so it's staying as is.
     
  15. Neal H Forum Member

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    BPF, inlet please ;)
     
  16. s1m0n Forum Member

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    Tulip style valves... Time for some new exhaust valves you think? Perhaps run a flow test with a pair of "penny on a stick" like the inlets to see if the expense of 8 new valves is worth it?

    Great results though

    Cheers

    Simon
     
  17. mr hillclimber Club GTI Supporter and Sponsor

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    Forgot about that... will do it prob when I flow test it next when I start sorting the inlet manifold.
     
  18. mr hillclimber Club GTI Supporter and Sponsor

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    Cheers...

    I plan on doing another project head later in the year, so will turn down the stems on some dummy valve and see what that does for the flow.
     
  19. s1m0n Forum Member

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    Soooo..... Having done all this what's the next step's re the rest of us, will you be releasing pricing or publishing a "how to" or what?

    Cheers

    Simon
     
  20. tshirt2k

    tshirt2k Forum Junkie

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    seconded[:D]
     

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