XJwheelman
NAXJA Forum User
- Location
- New York
I'm having trouble deciding which way I should go with upgrading my engine.
For starters my engine runs fine but it's tired and has a lot of carbon build up. So it could use some attention.
The original plan was to get a new cylinder head (which I did) and my brother (outlander560) was going to do a valve job with a port and polish. Santa brought me a new Camshaft, valve springs, seats, lifters and I also got a new intake manifold out of a 97 and up XJ. So the head was going to be cleaned up and swapped in along with the cam and also new 4 port injectors. With what we were going to do I was getting half a brand new engine. We were not going to touch the crank.
As we started to discuss everything it seemed like the best option was to pick up a 4.0L and build it up then swap that in, instead of just swapping the head. Mostly the reason is cause this needs to be done over the weekend, plus we wanted to change out the cam bearings so I could not only get some HP and torque but longevity as well.
Since the option of picking up a 4.0 from someone who is selling one for $300 with 15,000 miles on it seemed reasonable. We started discussing doing a Stroker. My brother currently goes to school for auto and has access to machines that could do a huge amount of work for us, like boring the block. My current engine does run well so I'm not exactly in a hurry to get this installed. I just don't know if its worth it to do the Stroker or if I should just rebuild the stock 4.0 with the head and cam upgrades.
I'm still currently reading whatever I can get my hands on for this since my auto knowledge doesn't cover this yet. So any opinions and help would be appreciated. So far I have read a lot of Pro's and Con's for the Stroker. It seems like the numbers for the 4.7l are 250/270. Is this worth the money and work?
For starters my engine runs fine but it's tired and has a lot of carbon build up. So it could use some attention.
The original plan was to get a new cylinder head (which I did) and my brother (outlander560) was going to do a valve job with a port and polish. Santa brought me a new Camshaft, valve springs, seats, lifters and I also got a new intake manifold out of a 97 and up XJ. So the head was going to be cleaned up and swapped in along with the cam and also new 4 port injectors. With what we were going to do I was getting half a brand new engine. We were not going to touch the crank.
As we started to discuss everything it seemed like the best option was to pick up a 4.0L and build it up then swap that in, instead of just swapping the head. Mostly the reason is cause this needs to be done over the weekend, plus we wanted to change out the cam bearings so I could not only get some HP and torque but longevity as well.
Since the option of picking up a 4.0 from someone who is selling one for $300 with 15,000 miles on it seemed reasonable. We started discussing doing a Stroker. My brother currently goes to school for auto and has access to machines that could do a huge amount of work for us, like boring the block. My current engine does run well so I'm not exactly in a hurry to get this installed. I just don't know if its worth it to do the Stroker or if I should just rebuild the stock 4.0 with the head and cam upgrades.
I'm still currently reading whatever I can get my hands on for this since my auto knowledge doesn't cover this yet. So any opinions and help would be appreciated. So far I have read a lot of Pro's and Con's for the Stroker. It seems like the numbers for the 4.7l are 250/270. Is this worth the money and work?