Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: Bishops Finger on February 13, 2011, 12:03:12 AM

Title: Throttle body spacers
Post by: Bishops Finger on February 13, 2011, 12:03:12 AM: Neither Hesco or Poweraid specifically mention GCs ....Yet do state I6 engines and they do work coz Ive got one on me TJ...

Is it cos the GCs are configured for more power?
Title: Re: Throttle body spacers
Post by: greggmo on February 13, 2011, 10:18:29 AM: tastes like chicken from what ive heard. :jump_125:
Title: Re: Throttle body spacers
Post by: Bubba on February 13, 2011, 08:53:08 PM: the vortex twists the wrong way on a gc so you would have to get the correct vortex spacer from the states
Title: Re: Throttle body spacers
Post by: Bishops Finger on February 13, 2011, 10:21:33 PM: Twisted vortex eh????...sounds chicanery to
me...
Title: Re: Throttle body spacers
Post by: greggmo on February 13, 2011, 10:44:04 PM: bubba is right. the helix inside the ones for the tj's n stuff have a clockwise rotation. no good for grands
Title: Re: Throttle body spacers
Post by: Bubba on February 13, 2011, 10:48:18 PM: yup right hand vortex
Title: Re: Throttle body spacers
Post by: Bishops Finger on February 14, 2011, 01:16:44 AM: Ya cant fool a buffoon you know...if you stick it on upside down it will work then.... :hysterical:
Title: Re: Throttle body spacers
Post by: Bulldog67 on February 14, 2011, 08:44:01 AM: JP mag say waste of money, falsehoods abound
Title: Re: Throttle body spacers
Post by: scrw on February 14, 2011, 09:54:58 AM: they are alcahol free hobgoblin, fookin useless
Title: Re: Throttle body spacers
Post by: Bishops Finger on February 14, 2011, 02:00:16 PM: Hmmm....so why does the one on the TJ work..
Title: Re: Throttle body spacers
Post by: Panic mechanic! on February 14, 2011, 02:43:59 PM: I may be wrong here but my understanding of them is that they reduce what is called as fuel stand off, the theory being that when an engine is running there is a point at which the fuel air mixture has no where to go as all the inlet valves are closed but there is still some residual mixture in the manifold ,so when the next firing sequence begins the fresh fuel squirted in to manifold and forces this back past the throttle body . By steping the throttle body away from the manifold it reduces the amount of fuel that does this and hence inproves throttle response and smoother tickover,well thats the theory anyway. I have seen a carbed engine where you could place your hand above the mouth of the carb and get petrol vapour settle on the palm, so that does happen.
Title: Re: Throttle body spacers
Post by: Dave69 on February 14, 2011, 08:27:47 PM: just like the 12 volt turbo fans for the intake
Title: Re: Throttle body spacers
Post by: scrw on February 14, 2011, 09:37:09 PM: longer intakes generally move power & torque up the rev range, not something you want offroad, and pulse tuning of an intake is an exact science, not just a case of sticking a lump of ally in as a spacer.
Title: Re: Throttle body spacers
Post by: Bishops Finger on February 15, 2011, 12:11:09 AM: Methinks them that dont have them are offering opinions...try then decide...
Title: Re: Throttle body spacers
Post by: scrw on February 15, 2011, 08:32:25 AM: I have had one, took it off, it moved the shift point on my 4l auto xj, went from going into top at 40 to 50mph, bloody irratating. Anyone got a link to a before & after dyno run?
Title: Re: Throttle body spacers
Post by: JamesH on February 15, 2011, 01:37:09 PM: Any 4.0 engine from the same year will use the same TB spacer TJ/XJ/ZJ (at least the years in question, late 90s).

I have one on mine, it changes the throttle response a bit but if I'd be annoyed if it had cost me a lot - I think it worked out to be about £26 when I added it onto a big Quadratec order and the exchange rate was ~2 to 1 (those were the days :icon_sad:)