what makes the 4.0 to be considered "high output"?
06-22-2012, 01:59 PM
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Year: 96
Model: Cherokee
Engine: 4.0
Wikipedia is wrong.
Having had both, driven both, had 13 Comanches with 4.0s, and worked as a Service Manager and Shop Forum at a Jeep dealer from 1980 to 1992, I can tell ya there's a max of 8 horsepower difference between the
Renix and HO.
The HO gained it's 8 horsepower by a combination of 3 things: improved intake ports, a 58mm throttle body versus a 52mm throttle body and a redesigned and improved header.
Take a Renix and add a true 60mm throttle body which bolts right on, an APN header or the like, and it will run as good or better than an HO.
Having had both, driven both, had 13 Comanches with 4.0s, and worked as a Service Manager and Shop Forum at a Jeep dealer from 1980 to 1992, I can tell ya there's a max of 8 horsepower difference between the
Renix and HO.
The HO gained it's 8 horsepower by a combination of 3 things: improved intake ports, a 58mm throttle body versus a 52mm throttle body and a redesigned and improved header.
Take a Renix and add a true 60mm throttle body which bolts right on, an APN header or the like, and it will run as good or better than an HO.
You seemed to have missed the point I made that a (Stock) HO over a Renix. Even if the numver was as low as 1 its still better than 0. Also Im sure a couple dyno runs can prove out points even better.
P.S. if you think wiki is wrong you should write who ever wrote it, Im sure if you can prove they will ammend it for you
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