Joby Johnson
NAXJA Forum User
- Location
- Washington State
I just finished my beautiful 1990 Cherokee Sport 2door with 4.5 Rubicon lift and now the engine is knocking. How hard is it to swap a later motor into it. Thanks Joby.
Knocking 4.0
- Thread starter Joby Johnson
- Start date
If you have the right tools, not hard at all. I just did the same thing about a month ago. Everything is pretty simple and basic.
You are going to need pretty much everything. Depending on what year engine you get for a donor, you might be going from obd1 to obd2, so all the electronics will need to be transfered.
GrimmJeeper
NAXJA Forum User
- Location
- Gardena, CA
did it just start knocking out of the blue? if it just happened for no reason and it still runs great i'll bet the flexplate is cracked. they like to crack around the bolt holes and then knock against the torque converter and engine block. sounds exactly like a rod knocking.
that is if it's an auto of course. rod knocks tend to creep up and get worse over time as the wrist pins in the pistons wear out, or come on all at once when a rod gets bent usualy from hyrdo-locking the engine.
that is if it's an auto of course. rod knocks tend to creep up and get worse over time as the wrist pins in the pistons wear out, or come on all at once when a rod gets bent usualy from hyrdo-locking the engine.
maybe2fast
NAXJA Forum User
- Location
- COMMERCE, MI
^beat me too it
mine were loose last winter, was pretty bummed about a rod knock
mine were loose last winter, was pretty bummed about a rod knock
KRAKER
NAXJA Forum User
- Location
- where blank stares are normal
If you know what you're doing it shouldnt take more than 1 full work day.
cruiser54
NAXJA Forum User
- Location
- Prescott, Az
Don't need all the electronics. Just swap sensors and manifolds, distributor to the new block. I'm in the process of doing the swap right now. Only a big deal to those who haven't done it...............
Dr. Dyno
NAXJA Forum User
- Location
- Al Ain, UAE
Joby's Jeep has the Renix electronics and manifolds and these don't simply bolt onto the HO head. The simplest solution would be to buy a remanufactured short block engine and transfer the Renix head with manifolds, distributor, and electronics onto it.
