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  #11  
Old 12-07-2012, 09:51 AM
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HemiLonestar HemiLonestar is offline
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Quote:
Originally Posted by NWRQC View Post
This is what I would do!

Talk to your friends a little more, they should know that there is a lot more to stroking a motor than adding longer rods.
You are pushing the piston further up into the quench area and you will need pistons that have valve reliefs so you don't have piston/valve contact. There are a lot of measurments to be taken before throwing in longer rods.
Longer rods won't change the stroke, it will just change the location of the piston within the bore.
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Last edited by HemiLonestar; 12-07-2012 at 10:09 PM.
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  #12  
Old 12-07-2012, 08:01 PM
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Quote:
Originally Posted by HemiLonestar View Post
Longer rods won't change the stroke, it will just change the location of the piston within the bore.
You are absolutely correct!
Thank you for pointing that out.
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  #13  
Old 12-09-2012, 06:03 AM
S.C. Express S.C. Express is offline
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I have the Liberty with the 3.7 and it has been a rock solid engine. Lots of torque for what it is. This engine responds very well to intake and exhaust mods. a decent CAI and better flowing exhaust give it another 30 ponies or so. It's very noticeable. Rebuild it stout and boost it, or find you a low mileage v-8 from a salvage yard to throw in it, Get creative.If you have engine guru's to help you, bump up the compression and go with some larger valves and stiffer valve springs for some more fun factor. I also had a 98 model Ram 1500 with what I believe was the 3,7... It was no speed demon, but like the Liberty it had bookoo torq. They like 5w-30 full syn. oil too. I picked up a few more mpg's running Mobil one syn in her at 5k intervals. The Liberty has 95K on the O.D. and still does not use a drop of oil. Wifey drives it, except for now she has fell in love with my Express and steals it quite often. Not cool, might have to kick her to the curb! Anyways good luck with whatever you decide. Just throwing some ideas at ya'.
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  #14  
Old 12-09-2012, 12:52 PM
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Originally Posted by S.C. Express View Post
I have the Liberty with the 3.7 and it has been a rock solid engine. Lots of torque for what it is. This engine responds very well to intake and exhaust mods. a decent CAI and better flowing exhaust give it another 30 ponies or so. It's very noticeable. Rebuild it stout and boost it, or find you a low mileage v-8 from a salvage yard to throw in it, Get creative.If you have engine guru's to help you, bump up the compression and go with some larger valves and stiffer valve springs for some more fun factor. I also had a 98 model Ram 1500 with what I believe was the 3,7... It was no speed demon, but like the Liberty it had bookoo torq. They like 5w-30 full syn. oil too. I picked up a few more mpg's running Mobil one syn in her at 5k intervals. The Liberty has 95K on the O.D. and still does not use a drop of oil. Wifey drives it, except for now she has fell in love with my Express and steals it quite often. Not cool, might have to kick her to the curb! Anyways good luck with whatever you decide. Just throwing some ideas at ya'.
Your 98 had a 3.9, different animal altogether (although it was derived the same way, they took 2 cylinders out of a 318).
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  #15  
Old 12-09-2012, 01:13 PM
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Swapping in a 4BT Cummins would be interesting. But possibly the Jeep guys might have some goodies for the 3.7. Probably planing the heads and a mild cam regrind. Try to figure what happened to caused it to fail, don't want a repeat.
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  #16  
Old 12-09-2012, 10:10 PM
S.C. Express S.C. Express is offline
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The Jeep guys swear by the Magnaflow cat back system. I have listened to a lot of sounds clips and it actually sounds darn good for a V-6!! I would love to put one on my jeep but its pricey.. Adding a CAI makes for nice gains. I did an EBay cheap CAI on mine and noticed an easy 10h.p. on the butt dyno
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  #17  
Old 12-09-2012, 10:16 PM
S.C. Express S.C. Express is offline
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Quote:
Originally Posted by HemiLonestar View Post
Your 98 had a 3.9, different animal altogether (although it was derived the same way, they took 2 cylinders out of a 318).
That explains why it was such a good engine. I pulled a car that was buried to the frame in sand out easily with no throttle..Just eased the clutch out in 1st and out she went. I miss that truck but it was embarassing having to wave off people wanting to race me. It was a red 2wd & had the chrome wheels and trim plus a mopar sport fiberglass hood. Looked mean anyways. Cops watched it like buzzards on road kill.
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