I REALLY NEED SOME HELP

[RubberFrog]

Yep but if he shifts at 3500 RPM and sticks to the first four gears, he should be fine until he can save up for a regear. As I've mentioned, his 1st gear is still lower than a JK's even with 35s.

I agree, I think that is the solution. I also think the early shifting could be fouling his plugs and causing the surging at idle.

Sponsored

 

[gato]

Jumping in here late. A few people gave you good advice. Many, though, are focusing on nonsense.

Lift: A Mopar "2 inch" lift, yields approximately 4" lift on a JL (non-Rubicon). So don't waste time arguing with people spewing nonsense. It is a decent lift for you.

Clutch Operation: Seems normal, but by all means do the slip test (3rd or 4th gear, in gear, floor it, if RPMs climb not proportionally to vehicle acceleration, clutch is bad). It is something that all manual car drivers should do periodically to check clutch life remaining. It is a like looking at your brake pads to see if you need new brakes. Clutches are wear items, just like brake pads.

Clutch Recall: Get on a dealer's list for the recall, ASAP.

Regearing: In your situation do not bother for now. If 1st gear feels OK to you, just adjust your driving. As some said, drive it as a 4 speed transmission, with a hugely tall 5th overdrive. The vehicle/engine can not tell the difference between 4th gear on 3.45 gears and 5th gear with 4.10s or 6th gear with 4.88s. What matters is the RPM required to give you the torque you need at the wheels for the specific driving situation. In the future, when you have funds and AFTER you do the recall, you can regear.

**** Do not attempt regearing yourself, if you haven't done it before or have someone who have to help. It is a specialized skill with many gotcha's ***

Tires: You invested in great new 35" tires. Don't listen to non sense about returning to stock tires. Just drive at higher RPMs.

Selling Jeep: Very weird non-sensical advice. Adjust your driving. Enjoy the Jeep. Pay it off. Build your credit score and savings.

Good luck and welcome to the forum. Don't listen to people saying you HAVE to do XYZ, when XYZ costs money. Many here just repeat costly old-wives tales.

 

[Bptchris01]

Jumping in here late. A few people gave you good advice. Many, though, are focusing on nonsense.

Lift: A Mopar "2 inch" lift, yields approximately 4" lift on a JL (non-Rubicon). So don't waste time arguing with people spewing nonsense. It is a decent lift for you.

Clutch Operation: Seems normal, but by all means do the slip test (3rd or 4th gear, in gear, floor it, if RPMs climb not proportionally to vehicle acceleration, clutch is bad). It is something that all manual car drivers should do periodically to check clutch life remaining. It is a like looking at your brake pads to see if you need new brakes. Clutches are wear items, just like brake pads.

Clutch Recall: Get on a dealer's list for the recall, ASAP.

Regearing: In your situation do not bother for now. If 1st gear feels OK to you, just adjust your driving. As some said, drive it as a 4 speed transmission, with a hugely tall 5th overdrive. The vehicle/engine can not tell the difference between 4th gear on 3.45 gears and 5th gear with 4.10s or 6th gear with 4.88s. What matters is the RPM required to give you the torque you need at the wheels for the specific driving situation. In the future, when you have funds and AFTER you do the recall, you can regear.

**** Do not attempt regearing yourself, if you haven't done it before or have someone who have to help. It is a specialized skill with many gotcha's ***

Tires: You invested in great new 35" tires. Don't listen to non sense about returning to stock tires. Just drive at higher RPMs.

Selling Jeep: Very weird non-sensical advice. Adjust your driving. Enjoy the Jeep. Pay it off. Build your credit score and savings.

Good luck and welcome to the forum. Don't listen to people saying you HAVE to do XYZ, when XYZ costs money. Many here just repeat costly old-wives tales.

Thank you very much. I changed brakes and rotors about 3 weeks ago. I got the powerstop z36 from extreme terrain

 

[gato]

Thank you very much. I changed brakes and rotors about 3 weeks ago. I got the powerstop z36 from extreme terrain

Excellent choice. I have a set in the garage just waiting for a bit more wear to put them on.

 

[Spartan99]

It’s often the case when you buy a used vehicle you’re gonna have to dump some money in it to get it to where you expected it to be or you have to fix this or that, and once you’re past that it’s smooth sailing. No biggie at all the Jeep will be great.

 

[J.Ferreira]

What engine, 3.6L? What gearing? Did this just start, or immediately after the lift and tires. I can't imagine driving a Sport, with 3.45 gearing (or whatever they have) with a 4" lift and 35" tires. That sounds like the worst combination you can have, so I'm hoping, sort of, that you've regeared to 4.56 or something already. If not, you f*cked up putting those tires and lift on without addressing the related drivetrain components.

Disregard if you've regeared. The tires are a large gear, at the end of the drivetrain. So, you have your engine torque, the transmission multiplying it, the t-case multiplying it when in 4-low, then the differentials with gears in there. The tire is a HUGE gear at the end of the axle. If you change tire size (the largest gear) without addressing the rest of the drivetrain to turn that HUGE gear, well, you're just doing something dumb, and it'll cause additional wear on your clutch and other drivetrain components. If you've already regeared, none of what I said applies. If you haven't, you need to address it. The lift just makes it worse.

The manuals only come with the 3.6, just fyi.

 

[Erievon]

If you really really want to prove to yourself that you just need to re-gear...do you know anyone with stock rims and tires you can borrow (Not from a rubicon, but from a sport or sahara)? If you do, beg them to let you borrow them for a few hours. Drive around and see how that feels. That'll end all doubt right there....

 

[Maverick909]

35’s and 3.45 gears are going to bog the crap out of the 3.6l engine. You should
Look into A) re gearing your sport axles to 4.56 or 4.88
B) get a set of rubicon take of axles with lockers and 4.10 gears.
C) get rubicon axles and regear them to 4.56 if you plan to keep the 35’s if you plan to get bigger tires then move to 4.88 gears

 

[Allis48]

Not sure if you have seen the past two times it has been mentioned here but from that video it sounds like you are shifting too early, the jeep has basically no torque below 2,000rpm try shifting later for each gear. I usually try to shift anywhere between 3k -4k rpm, it tends to shift a lot better and smoother at a higher rpm, plus with the larger tires it will help. Worth a shot since changing your driving style is free lol.

 

[colinb113]

35’s and 3.45 gears are going to bog the crap out of the 3.6l engine. You should
Look into A) re gearing your sport axles to 4.56 or 4.88
B) get a set of rubicon take of axles with lockers and 4.10 gears.
C) get rubicon axles and regear them to 4.56 if you plan to keep the 35’s if you plan to get bigger tires then move to 4.88 gears

I am waiting on a '24 3.6MT Sport S currently and want to install lift/35s pretty much right off the bat. I DO intend to regear to 4.88, but is it something I should be rushing? I likely will need a few months to save up for a regear after dropping all that money on a lift, wheels, and tires. Considering I work from home and it won't be driven other than a few miles around town, is a 6-month wait really a big deal?

 

[Maverick909]

I am waiting on a '24 3.6MT Sport S currently and want to install lift/35s pretty much right off the bat. I DO intend to regear to 4.88, but is it something I should be rushing? I likely will need a few months to save up for a regear after dropping all that money on a lift, wheels, and tires. Considering I work from home and it won't be driven other than a few miles around town, is a 6-month wait really a big deal?

Its going to be tough on the drive train for sure but I’m sure you’ll be okay. I remember going from sport s stock tires to rubicon take offs and it felt terrible. That just only bumped to 33’s I personally wouldn’t recommend it. I’d rather have the lift and run sport wheels until I could regear and then put tires on.

 

[colinb113]

Its going to be tough on the drive train for sure but I’m sure you’ll be okay. I remember going from sport s stock tires to rubicon take offs and it felt terrible. That just only bumped to 33’s I personally wouldn’t recommend it. I’d rather have the lift and run sport wheels until I could regear and then put tires on.

I've considered that as well. Seems to me it'll be a while before I can even expect my order to be built so I've got some time to figure it out. Thanks for the input!

 

[Maverick909]

I've considered that as well. Seems to me it'll be a while before I can even expect my order to be built so I've got some time to figure it out. Thanks for the input!

No problem. Just enjoy the journey getting it where you want it. I love how far my Jeeps come.

Sponsored