Noisy engine and teddies all over the garage

Discussion in 'Mech Tech' started by sANDYbAY, Oct 26, 2013.

  1. that seems close but think it was more midlands
     
  2. is that reverse psychology?
     
    Paul Weeding likes this.
  3. Potentially :lol:

    @sANDYbAY what code is your 1800? I'm just trying to work out torque and BHP changes :thumbsup:
     
  4. sANDYbAY

    sANDYbAY On benefits-won't sponsor!

    @Dicky I was only joking about the bidding war, you Definately get first refusal.
     
  5. I'm not clever enough to do that............or am I. ;)
     
    Pony and paradox like this.
  6. :thinking: I personally think you should give it to me... solving all this running/not running/potentially lumpy running issues ;)
     
  7. davidoft

    davidoft Sponsor

    I spotted it then :D

    The new heads (AMC) all have the same valve sizes regardless of cc, in fairness to your builder if he ordered what is advertised as an 1800 head why would he expect it to be different, also he may have built up the engine to short block with one head and fitted the second ( new) head without comparing them, it's an easy fix though :)
     
  8. sANDYbAY

    sANDYbAY On benefits-won't sponsor!

    Hang on I'll get me torch....






    I should be in bed you know, it's well past my bedtime and I've got a phone call to make in the morning
     
  9. sANDYbAY

    sANDYbAY On benefits-won't sponsor!

    I said a few post back, I'm coming to Scotland to give you one.






    X
    That's just to be going on with 'cos my vans not working at the moment. :)
     

  10. Yeah lets not take over bobs thread with the science of bhp and torque at different rpms
    After all stump puller engines aint popular in the uk
     
    Paul Weeding likes this.
  11. :lol:

    I'm due to go to bed too... got a day of sanding para's van tomorrow!! :)
     
    Barneyrubble and paradox like this.
  12. sANDYbAY

    sANDYbAY On benefits-won't sponsor!

    Don't worry about @paradox 's van, he's not in a hurry to get it back

    AP049439
     
    paradox and Paul Weeding like this.
  13. Going on the chart values, you're looking at 5BHP less, and 10ft/lbs of torque less...

    But that is book values, which as we all know, are never right :lol:
     
  14. Seriously?:thinking:

    Not questioning you're integrity, but I'd be extremely surprised if a nailed on 15BHP increase was down to the valve size alone...
     
  15. sANDYbAY

    sANDYbAY On benefits-won't sponsor!

    5 bhp :eek::eek:

    Oh the shame of my slow underpowered van.
     
  16. You should've just sent it to me in the first place ;) :lol:
     
    paradox likes this.
  17. im getting the X factor tactic may win mr cowel i mean weeding over here bob ;)
     
  18. Isnt the issue that if you have a significant power imbalance between one side and the other it will trash the bottom end a lot quicker!
     
    holmsen, Paul Weeding and paradox like this.
  19. Given that you've had new Bs & Ps etc....i think you'll be more than happy with the engine, compared to the previous output once the head issue has been sorted, and everything's run in
     
    sANDYbAY and Paul Weeding like this.

  20. Its not just the valve size but the ports aswell

    I have ported heads that have given 10 to 15 bhp extra with no other mods at all
    The first stage of tuning is to increase flow and if you do this by doing what isnt economicaly viable in mass production then apart from the effort and time involved its a free power gain

    Just matching the inlet and the port to the size of the gasket makes a massive difference
     

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