Section : Carburettors

K&Ns

Posted By : David Freeman, 21-Jun-2006, 10:10pm

• K&Ns

  Posted By : Philip Charlton, 21-Jun-2006, 11:59pm

  keep that standard box. saves faffing around and runs better in hot weather/traffic.

• K&Ns

  Posted By : Wayne Farnworth, 22-Jun-2006, 07:20am

  David
  
  Try this for eBay:
  
  http://www.bidslayer.com/
  
  You can set the bid on their server, so if your computer is off the bid still goes through anyway.
  
  Wayne

  • K&Ns

    Posted By : Andy Cook, 22-Jun-2006, 02:06pm

    or try this one:-
    
    http://hammersnipe.auctionstealer.com/home.cfm
    
    bidslayer is only free for it's trial 7 days whereas hammersnipe lets you bid on up to 3 auctions per week free of charge as part of their standard service.

    • K&Ns

      Posted By : Keith Dandridge, 22-Jun-2006, 02:46pm

      I would have thought there would be a steady stream of these coming onto the
      second hand market as users realise they are actually of little use.
      They do promote rough running in warm conditions,weather or traffic, but they
      are popular bling.
      

      • K&Ns

        Posted By : David Freeman, 22-Jun-2006, 09:04pm

        Keith:
        ooooooh. That hurt..
        So, what does the team think? The engine I have is new to me, as are the carbs.
        I have some 1" long trumpets and some posh ITC foam rubber over-filters which Tony at Redline told me to throw in the bin
        as they were costing me an average of 22 BHP across the range. 'Get some decent K&Ns' he said.
        Tony Lindsay-Dean, engine builder, told me to use the naked trumpets until I could afford some decent K&Ns.
        Keith tells me to use an original filter and box...which I never had in the first place, so, what the **** is the best advice?
        And another thing, Bling isn't really my scene, a healthy, safe and quick, fun reliable car is what I dream of...er, which doesn't gulp in the grit.
        DF
        
        

        • K&Ns

          Posted By : Philip Charlton, 22-Jun-2006, 11:12pm

          get some best advice? get some K&Ns in a box with a cold air feed.
          
          naked trumpets = dirt in the engine.
          what bhp did it give at the rolling road?

        • K&Ns

          Posted By : George Ralph, 23-Jun-2006, 09:49am

          David,
          
          Your post is really indicative of the problem with Triumph "professionals" where you get as many opinions as people you ask. Often they can be very uncomplimentary of each other aswell, which I see as very unprofessional. That notwithstanding, the main constraint with our cars is that there is not much room to get a suitably deep filter in and clear the wing. About 2 inches deep is about the maximum. If you want to fit trumpets of a reasonably effective length (good on SU, mandatory on Weber) then fitting filters which comprise a paper element sandwiched between two metal plates (ie K&N) only serves to interrupt the working of the trumpets which really need about 2" clearance in front of them.
          
          I don't see how anyone can state, off the top of his head without a dyno test, that you would lose 22bhp by using ITC filters. In motorsport ITC filters are widely used from F1 down (check in the paddock of any race series and see if you spot anyone using pancake filters, K&N or otherwise.
          
          I did a lot of experimentation on my triple weber setup starting with the ideal which is a cold air box of suitable dimensions fed by ducting from a large K&N style cone filter behind the front grille. I cut away the inner wing to get it in. The result was the last carb in line was being starved of air. So I abandoned that idea (this might not be an issue on a twin carb setup). In the end I have gone for 2" trumpets behind ITC foam dome filters which seem to make little difference to the running of the car ( I have cold air ducting too). The other advantage is that they are easily removed (one clip each) so that I can run the trumpets open when using the car in anger.
          
          In short, you need filtration for road use. The constraint is there is little space for filters and the carbs are above the exhaust. Ideally an airbox with internal trumpets ducted to a remote cone filter would be optimum for a twin carb setup. If this is not possible then whatever filter you fit should be of the open face dome type.
          
          There yer go - yet another bloody opinion!
          
          You pays yer money etc.