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General Forums => The Mess Hall => Topic started by: cab on August 27, 2009, 09:30:39 AM

Title: ok im gonna do it
Post by: cab on August 27, 2009, 09:30:39 AM

 i am going to put a 4.0 throttle body on the 2.5.  what all do i need, ex. spacers etc.  and where is the best place to get one?  this is on a 89 yj. thanks.

Title: Re: ok im gonna do it
Post by: FourbangerYJ on August 27, 2009, 09:47:37 AM

I thought that the TB upgrade was for the 91-02 croud. Check the bolt pattern to the TB it should have 4 bolt holes not 3.

Title: Re: ok im gonna do it
Post by: TrailsLessTaken on August 27, 2009, 10:03:45 AM

Yeah i dont think this will work on the throttle body injection either

Title: Re: ok im gonna do it
Post by: cab on August 27, 2009, 10:05:18 AM

  ok will check, just my luck.  so is there anything else i can do?

Title: Re: ok im gonna do it
Post by: sharpxmen on August 27, 2009, 10:32:49 AM

don't have experience with this but if there is a similar 4.0 tbi you will need all the parts on your t/b to go on the 4.0 one and if that is possible you might be able to do it - but again, have no idea if that would work in the end, might be more than just to swap the injector if it will fit.

Title: Re: ok im gonna do it
Post by: TrailsLessTaken on August 28, 2009, 08:06:06 PM

I havent seen one of the throttle bodys from a TBI one but could you bore that one out maybe to do the same thing :confused:

Title: Re: ok im gonna do it
Post by: sharpxmen on August 28, 2009, 09:17:05 PM

Quote from: TrailsLessTaken on August 28, 2009, 08:06:06 PM

I havent seen one of the throttle bodys from a TBI one but could you bore that one out maybe to do the same thing :confused:

and use the butterfly from the 4.0?

Title: Re: ok im gonna do it
Post by: Jeffy on August 28, 2009, 09:49:30 PM

You would be better off taking the gasket of your TBI and try to cross referencing it with other TBI's.  This is how the whole 4.0L TBS and 4.0L TB got started.