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General Forums => The Mess Hall => Topic started by: djknight89 on October 23, 2006, 03:34:53 PM

Title: Engine Swap what will fit and be easy?
Post by: djknight89 on October 23, 2006, 03:34:53 PM
I'm going to swap out my 4cyl. I dont know why anyone would want to do that but I am. :) I need to know engines that are good fits. Im looking at the 4.3L Vortec out of a S-10. Let me know of all the good fits you can think of.
Title: Engine Swap what will fit and be easy?
Post by: Jeffy on October 23, 2006, 03:38:43 PM
Easy and swap are mutually exclusive, I'm afraid.  Just about anything will 'fit' into tha Jeeps engine bay.

Keep in mind that just about every swap will many a new transmission also.  THen you've got to wire the thing up and depending on if it's Carb, TBI or MPFI, it will have varing challenges.
Title: Engine Swap what will fit and be easy?
Post by: chardrc on October 23, 2006, 04:38:16 PM
the vortec 4.3l will fit with plenty of room.. i keep on thinking abotu puting one in my jeep but nothin is happening.... i have a s10 with the 4.3l and it has plenty of power and decent fuel milage.... bigest thing about the sawp is that you need a beter trany..
as far as room goes.. remmeber they are long enough for a 6 cylender so you could put a v12 in if your heart so desiered.
Title: Engine Swap what will fit and be easy?
Post by: djknight89 on October 23, 2006, 05:27:05 PM
my heart desires but my pocket definately doesnt
Title: Engine Swap what will fit and be easy?
Post by: Jesse-James on October 24, 2006, 12:04:26 AM
Only EASY swap for a 2.5L is another 2.5L
Title: Engine Swap what will fit and be easy?
Post by: rwing1 on October 24, 2006, 08:47:36 AM
Having Done engine swaps on other vehicles, the first step is deciding which tranny and adapters you want.  I am contemplating swapping out my 2.5 as well.  I am leaning towards a Chrysler drivetrain/engine out of a Dakota or Durango or even a fullsize truck.  With a little work you can adapt the jeeps transfer without buying adapters.  Biggest hurdle is the input shaft matching splines on the tranny output and clocking the transfer if it's a dakota trans.   Considering alot of JPers are using the AX-15 with the Dakota 2.5 Bellhousing.....  And adapters are available for just about every manufacturers engines in front of an AX15,   and I have heard the wiring is easier with a Dodge engine V6/V8.  If there is such a thing as easy....  this would be closest I think.  Even the 3.9L Magnum would really wake up a 4bangerJP!  But that's just me,  other guys will have other opinions.  I kinda figure....it's a Chrysler built Jeep......  Go with it.  If you haven't yet , read the FAQ on tranny swaps.  Great info.
Title: Engine Swap what will fit and be easy?
Post by: Jeffy on October 24, 2006, 11:44:07 AM
Quote from: "Jesse-James"
Only EASY swap for a 2.5L is another 2.5L


Even that's not 'easy' depending on the year.  (ie 91+ engine in a '87-90)
Title: Engine Swap what will fit and be easy?
Post by: superman1456 on October 24, 2006, 08:57:20 PM
go to advanced adaptors and get a kit for a chevy 350 swop. you will need the engin and the trans everything else is in the kit. good luck
Title: Engine Swap what will fit and be easy?
Post by: djknight89 on October 25, 2006, 02:17:53 PM
my TJ is a 99 though and to pass emissions I think I have to have a motor that is my year or newer.
Title: Engine Swap what will fit and be easy?
Post by: Jeffy on October 25, 2006, 02:51:36 PM
Quote from: "djknight89"
my TJ is a 99 though and to pass emissions I think I have to have a motor that is my year or newer.


Ah, yeah to be legal in many states you would, which makes things more difficult.
Title: Engine Swap what will fit and be easy?
Post by: superman1456 on October 25, 2006, 10:03:30 PM
then use an LS7 newer then the jeep and makes about 500hp AND is pretty dam good on gas too. what more could you ask for?
Title: Engine Swap what will fit and be easy?
Post by: chardrc on October 26, 2006, 06:16:13 AM
a super charger :twisted:
Title: Engine Swap what will fit and be easy?
Post by: rwing1 on October 26, 2006, 09:40:20 AM
Nice little write-up on a swap simliar to what we're talking about here.  Hope the link works right:)

http://www.jpmagazine.com/techarticles/154_0305_jeep_tj_v8_engine_swap/
Title: !!!!
Post by: zeitlerusmc on October 26, 2006, 10:02:47 AM
teraflex hemi conversion!