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XJ Ask the Question Thread
CF Veteran
Join Date: Jan 2013
Location: west chester, pa
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Year: 1999
Engine: 4.0
For a '99 4.0 with the AC... Which hose is high pressure? Coming from the top of AC.
Most info I see on Google pertain to the older AC that have connections on the rear of compressor. Not really helpful lol
Most info I see on Google pertain to the older AC that have connections on the rear of compressor. Not really helpful lol
Camshafts
Im looking for a new camshaft. I want something that improves power and gas mileage. I would also like something with a lope when it's idling and an aggressive sound when I step on it. Does anyone know of any cams that would offer this? I've been looking at Comp Cams High Energy 252H and their High Energy 260H. Do either of these provide that pope and aggressive sound?
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Im looking for a new camshaft. I want something that improves power and gas mileage. I would also like something with a lope when it's idling and an aggressive sound when I step on it. Does anyone know of any cams that would offer this? I've been looking at Comp Cams High Energy 252H and their High Energy 260H. Do either of these provide that pope and aggressive sound?
Choose a couple of those things only, cause you're not getting them all.
Last edited by cruiser54; 02-19-2015 at 04:42 PM.
Senior Member
Join Date: Jan 2015
Location: Anderson, SC
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Year: 1999
Model: Cherokee
Engine: 4.0
Im looking for a new camshaft. I want something that improves power and gas mileage. I would also like something with a lope when it's idling and an aggressive sound when I step on it. Does anyone know of any cams that would offer this? I've been looking at Comp Cams High Energy 252H and their High Energy 260H. Do either of these provide that pope and aggressive sound?
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Moderator of Jeeps
Join Date: Jul 2011
Location: Frederick, MD from Cleveland, OH
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
I stopped reading at "I want power and fuel economy," but I don't know anything about cams anyway
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Seasoned Member
Join Date: Dec 2013
Location: SATX
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Year: 1999
Model: Cherokee
Engine: 4.0 I6
Herp Derp Jerp
Join Date: Nov 2011
Location: Parham, ON
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Assign fuel economy, power, and reliability appropriately:
Yeah... it's a 4.0L lol
...do you just get gasoline for free or did someone abuse you as a child? Fuel economy has been a concern since the 1920s.
Yeah... it's a 4.0L lol
...do you just get gasoline for free or did someone abuse you as a child? Fuel economy has been a concern since the 1920s.
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
In all seriousness, the Comp cam for the carbureted 4.2 (258) works well in an otherwise stock 4.0. Not lumpy though.
Senior Member
Join Date: Jan 2015
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Year: 1999
Model: Cherokee
Engine: 4.0