2.9=>4.0 swap

truckguy · Apr 19, 2009

the 2.9 in my bronco II is trashed and i'm very interested in doing the 4.0 swap. i found a parts car that has around 120,00 miles on the engine. Is that too many miles?
thanks for the help

okietheranger · Apr 19, 2009

what! That thing is still brand new

Ozwynn · Apr 19, 2009

yeah ....... they don't typically start having problems till over 200K, is it in the car? do a compression check. if its out of the car atleast change the head gaskets and get the heads fluxed.

truckguy · Apr 19, 2009

the engine is still in the explorer, after i pull it out should i still change the head gaskets and get the heads fluxed?

smokey · Apr 19, 2009

I'd leave the heads be. I'd put on new valve cover and intake gaskets and new plugs while it is out. way easier with the engine out.

Ozwynn · Apr 19, 2009

truckguy said:
the engine is still in the explorer, after i pull it out should i still change the head gaskets and get the heads fluxed?

atleast check the compression before you pull it

koolmilds · Apr 20, 2009

at the minimum, id change rod bearings and the front and rear main seal. my 140+k engine shows nominal wear on the mains, and just starting to show copper on the rods. cheap insurance, rods are $20 for a set, oil pan gasket is $20, rear main is $14, front main is $8.

2.9=>4.0 swap

truckguy

15+ Year Member

okietheranger

15+ Year Member

Ozwynn

If you didn’t bleed for it you don’t deserve it

truckguy

15+ Year Member

smokey

15+ Year Member

Ozwynn

If you didn’t bleed for it you don’t deserve it

koolmilds

15+ Year Member

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