engine swap Question

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Feb 23, 2010 | 10:08 AM

tannerp89

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CF Veteran

Joined: Jan 2010

Posts: 1,316

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From: Coeur d' Alene, Idaho

Year: 1998

Model: Cherokee

Engine: 4.0 rebuilt w/ bored TB, banks header, upgraded ignition, 3 row rad, high flow h2o pump, 180* t-stat

engine swap Question

so i found a 4.0 out of a 99' cherokee that was rolled and i want to rebuild it/ stroke it and put it in my 1998 Cherokee sport. i was looking at the engine and noticed that the fuel injectors and wiring harness are different then what i have. is this gonna cause an issue with the ECU and will the harnesses still match up? or am i gonna have to rewire my harness for the newer injectors? and what fuel injectors would i put in a 99'?.....i know there are several posts on here about it but im a lame newbie and got confused...

Feb 23, 2010 | 10:09 AM

Hommersimpson

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Joined: Jan 2010

Posts: 1,087

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From: St Augustine Florida

Year: 1992

Model: Cherokee

Engine: 4.0

99-01 i think the heads are prone to cracking.. might wana get diferant head...should be able to use your old injecters and fuel rail...

Feb 23, 2010 | 10:15 AM

tannerp89

Thread Starter

CF Veteran

Joined: Jan 2010

Posts: 1,316

Likes: 1

From: Coeur d' Alene, Idaho

Year: 1998

Model: Cherokee

Engine: 4.0 rebuilt w/ bored TB, banks header, upgraded ignition, 3 row rad, high flow h2o pump, 180* t-stat

well i have the head from my 1998 still...and yeah but i read somewhere that the flow rates changed from 1998 to 1999 on the injectors, will that make a difference?