BPB
NAXJA Forum User
- Location
- Battle Ground, Washington
How hard would it be to put a 4.0 ho in the place of my stock 4.0 in a 1990 cherokee, what mods need to be made?
Last edited:
4.0 ho swap
- Thread starter BPB
- Start date
Joe R.
NAXJA Forum User
- Location
- Surprise AZ
im doing the exact same swap!! I am building the engine in school now. I am putting a 93 ho into my 90... Any answers??? I would also like to know what electrical needs to be changed... thanks guys.
~Joe~
~Joe~
Gil BullyKatz
NAXJA Forum User
- Location
- 2003UB313 Planet ERIS
Planning on keeping the Renix ECU? It adapts to mods a little better....If you wanna keep it, you're gonna want to hook up the knock sensor and if you plan on using the HO throttlebody you have to modify the TPS sensor...Not sure about the power steering bracketry if using the HO head...
There's a whole slew of tech on here...try a few searches
There's a whole slew of tech on here...try a few searches
Joe R.
NAXJA Forum User
- Location
- Surprise AZ
the knock sensor.... i never looked, is there a hole for that in the HO head? god i hope so....
- Location
- Colorado Springs, CO
The knock sensor mounts in the block. The newer blocks do not have a hole for the knock sensor.
I think Cherokee America has an old article about doing the swap.
Fred
I think Cherokee America has an old article about doing the swap.
Fred
BPB
NAXJA Forum User
- Location
- Battle Ground, Washington
I have never done an engine swap, I have the jeep shop manual that my neighbor payed like $80 for, but I don't know if that is enough, how difficult will this be???
