South Florida Dysfunctional 4x4's
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Join Date: Sep 2010
Location: Lantana, Fl
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Year: 1996
Model: Cherokee (XJ)
Engine: 4.Slow
Started playing around with my engine design programs. Going to have another camshaft made for my stroker. The cam in it works good now, I just have to rev it up. I came up with a better design to shift it's powerband down lower instead. I never rev past 5K anyways so the new designs powerband will be down at 1500-6K instead of it's current 2500-8K one. Increasing my centerline by a few degrees while dropping some lift and duration by approx 10-12° and dropping the lift by approx .010".
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Year: 1998
Model: Cherokee
Engine: 4.0
Started playing around with my engine design programs. Going to have another camshaft made for my stroker. The cam in it works good now, I just have to rev it up. I came up with a better design to shift it's powerband down lower instead. I never rev past 5K anyways so the new designs powerband will be down at 1500-6K instead of it's current 2500-8K one. Increasing my centerline by a few degrees while dropping some lift and duration by approx 10-12° and dropping the lift by approx .010".
You think the current one would work with stock internals?
How much do they charge to churn up a new one?
::CF Administrator::
Join Date: Sep 2010
Location: Lantana, Fl
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188 Posts
Year: 1996
Model: Cherokee (XJ)
Engine: 4.Slow
::CF Administrator::
Join Date: Sep 2010
Location: Lantana, Fl
Posts: 34,053
Received 236 Likes
on
188 Posts
Year: 1996
Model: Cherokee (XJ)
Engine: 4.Slow
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Join Date: Oct 2013
Location: Miami, fl
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Year: 1998
Model: Cherokee
Engine: 4.0
::CF Administrator::
Join Date: Sep 2010
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Year: 1996
Model: Cherokee (XJ)
Engine: 4.Slow
Now, when you have computer controlled ignitions like our Jeeps (both 4.0L and 2.5L), you're kinda limited on your cam size when using a stock ECU. But you can kinda get around this by playing with your centerline and duration settings (when selecting or designing).
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Join Date: Jun 2017
Location: Georgia
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Year: 1992
Model: Cherokee
Engine: 4.0L V6
Another day, another crazy noise
God I love my jeep but it's been something else that needs worked on every week. It's 25 years old and hasn't been driven much in the past 10 years until now. So I'm having to work out a few problems to turn it into my DD
OUTLAW thanks again for helping me out the other day, but now whenever I turn left something pops in the front driver side. Sounds like my jeep is popping its knuckle. Just one pop every time I turn left. Let me know if y'all have any ideas.
Thanks!
OUTLAW thanks again for helping me out the other day, but now whenever I turn left something pops in the front driver side. Sounds like my jeep is popping its knuckle. Just one pop every time I turn left. Let me know if y'all have any ideas.
Thanks!
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Join Date: Oct 2013
Location: Miami, fl
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Year: 1998
Model: Cherokee
Engine: 4.0
God I love my jeep but it's been something else that needs worked on every week. It's 25 years old and hasn't been driven much in the past 10 years until now. So I'm having to work out a few problems to turn it into my DD
OUTLAW thanks again for helping me out the other day, but now whenever I turn left something pops in the front driver side. Sounds like my jeep is popping its knuckle. Just one pop every time I turn left. Let me know if y'all have any ideas.
Thanks!
OUTLAW thanks again for helping me out the other day, but now whenever I turn left something pops in the front driver side. Sounds like my jeep is popping its knuckle. Just one pop every time I turn left. Let me know if y'all have any ideas.
Thanks!
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Year: 1998
Model: Cherokee
Engine: 4.0
Only way a camshaft can't be used with stock pistons is if the lift it too great, the valves would hot the pistons. Also, higher pressure valve springs are required whenever you go over a certain size lift to prevent valve float. My springs now will support up to a .500 lift camshaft and I'm currently at .480
Now, when you have computer controlled ignitions like our Jeeps (both 4.0L and 2.5L), you're kinda limited on your cam size when using a stock ECU. But you can kinda get around this by playing with your centerline and duration settings (when selecting or designing).
Now, when you have computer controlled ignitions like our Jeeps (both 4.0L and 2.5L), you're kinda limited on your cam size when using a stock ECU. But you can kinda get around this by playing with your centerline and duration settings (when selecting or designing).
New camshaft, new higher rate valve springs, and what else?
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Year: 1998
Model: Cherokee
Engine: 4.0
As you mentioned the xj hasn't been Used in aWhile, it could be that old bushings are showing their age and may need replacing...
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Year: 1996
Model: Cherokee (XJ)
Engine: 4.Slow
Now for a bone stock engine like yours. 505 Performance has a Stage 1 camshaft that will give you a little extra pep (be realistic and don't expect 50 or so hp from just a camshaft without other work) and will work with stock valve train and sensors. Remember, I don't have a 2.5L anymore or stock sensors, the whole engine is modified.
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Year: 1998
Model: Cherokee
Engine: 4.0
My cyl head is already modified but generally, the head has to be machined at the valve spring seats to achieve a certain installed valve spring height. I would recommend new valves over the old ones & New valve springs and retainers. Basically, a whole new cyl head.
Now for a bone stock engine like yours. 505 Performance has a Stage 1 camshaft that will give you a little extra pep (be realistic and don't expect 50 or so hp from just a camshaft without other work) and will work with stock valve train and sensors. Remember, I don't have a 2.5L anymore or stock sensors, the whole engine is modified.
Now for a bone stock engine like yours. 505 Performance has a Stage 1 camshaft that will give you a little extra pep (be realistic and don't expect 50 or so hp from just a camshaft without other work) and will work with stock valve train and sensors. Remember, I don't have a 2.5L anymore or stock sensors, the whole engine is modified.
The gears had made a difference but still missing that ooomph feeling...
Maybe because I'm spoiled by the 4.0 and 4.10 gears