Jasper Engines - 2011 JKU
#11
#12
JK Newbie
Join Date: Jun 2009
Location: Chesterfield, MO
Posts: 14
Likes: 0
Received 0 Likes
on
0 Posts
OP is correct, the older JK engines are flawed in many ways besides just the oil consumption. my 2007 JKU engine was replaced at 35xxx - just outside of warranty. Jeep dealer replaced with Jasper engine, the Jasper rep was on hand during install with me to be sure done right. 75K later, I think they are a good alternative to a remanufactured 3.8. But, the timing cover just went out which was a known TSB problem in the early JKs, and so again, I have an expensive repair and well outside Jasper's 3 year/100K warranty. But, I don't fault Jasper, the timing covers Mopar engineered early on were porous and terrible parts.
#13
JK Super Freak
Join Date: Apr 2008
Location: Thunder Bay, Ontario
Posts: 1,267
Likes: 0
Received 2 Likes
on
2 Posts
OP is correct, the older JK engines are flawed in many ways besides just the oil consumption. my 2007 JKU engine was replaced at 35xxx - just outside of warranty. Jeep dealer replaced with Jasper engine, the Jasper rep was on hand during install with me to be sure done right. 75K later, I think they are a good alternative to a remanufactured 3.8. But, the timing cover just went out which was a known TSB problem in the early JKs, and so again, I have an expensive repair and well outside Jasper's 3 year/100K warranty. But, I don't fault Jasper, the timing covers Mopar engineered early on were porous and terrible parts.
As I said, we have an 07, 08, and 09 allhave well over 100,000klm and the 08 has 270,000klm with no issues.
Last edited by jtphoto JK; 04-15-2017 at 02:27 PM.
#18
JK Super Freak
Join Date: Apr 2008
Location: Thunder Bay, Ontario
Posts: 1,267
Likes: 0
Received 2 Likes
on
2 Posts
Lol Then you evidently haven't spent any time with a regeared 3.8. The 3.6 will not do anything the 3.8 can't. Most seat of the pants Performance issues are transmission related and not motor related.
#19
JK Enthusiast
I will not claim the 3.8 to be better than the 3.6, but I personally do like the 3.8. It's easy to work on, has a good amount of low end torque, and has been rather dependable for me. I have 157,000 miles on mine with no major issues. I have just been trying to think of options ahead of time for when I need to replace it. As I said before, I'll probably just replace with another reman 3.8.
#20
JK Enthusiast
Join Date: Sep 2016
Location: Michigan
Posts: 182
Likes: 0
Received 0 Likes
on
0 Posts
owned a 2009 rubicon before this 3.6 willy. Have you owned both? Also owned 2 4.0 jeeps which I also feel was a better motor. Like I said the 3.6 is better in every catagory. Had a 2.5 tj too. Its still sitting in the garage. My granddaughter will get it this fall when she turns 16. It too would go any place the new one will. Doesnt make it as good of a day to day motor. Sure you can change gearing but that's about allways a compromise between power, gas milage and longevity. lets see. More hp more torque, better fuel economy, lighter and has a much better rep when it comes to using oil. Now tell me in which category the 3.8 is superior to the 3.6!