I did think about nitrous for my use case. I want some extra power on demand to pass on our 2-lane highways from time to time. Much of the rest of the time the 4.0L is sufficient.
Power hungry 4.0: how to give it what it wants?
- Thread starter Cumsterdump
- Start date
When I used to live my life a quarter mile at a time
Nitrous would be a very fun use case for that. Talk about a highway sleeper!
Went from 4.0 on 31s to 4.6 on 31s with 3.73 gears behind the AX15. Noticeable difference in power with the larger motor. Then went from 31s to 33s. Thing was an absolute dog. Felt worse than even the tired 4.0 on 31s with 3.73 gears. A week ago I had 4.88 gears installed. This is the peppiest, most enjoyable combination that I have experienced thus far. One caveat, if you don't like the sound of your motor in the 2,500-4,000 rpm range, lower gears, and all the benefits that come with them, are probably not for you.
I will concur. 4.88 and the 5 speed pushing 33s was the best tire/gear/trans combination mine has ever had for drivability.
Thanks a lot mrblaine I think I just spit coffee on my keyboard while catching up on the forums.
The Banks turbo totally transformed my Rubicon. I only have 32s and I stayed with the stock 4.10 axles. It is a great combination. I have often wondered if I were to move up to 33s without changing the gears if it would ruin that ideal combination. At any rate, the Banks is no longer available but what about Jezza’s setup? That is probably even better. Not cheap I am sure but much less than an LS.
This thread is the equivalent of someone buying a Prius and saying I want to improve my quarter mile times. You want a peppy Jeep....buy a TrackHawk.
32 to 33 is probably not noticeable/significant. Having said that, I have a stock 4.0/5-speed on 33s with 4.10s. I live in a generally flat area around 500ft above sea level. My Jeep drives around fine, but I would not want a higher ratio with 33s. I expect to drop down to 4.88 in the future. You're turbo should help move things along compared to my stock engine.
I guess to put it another way, I would not recommend someone install 4.10 with 33s, obviously I just mentioned I expect to go lower, but my Jeep came with the current setup and it's good enough that I'm not in a hurry to regear.
Way back when I regeared the first time, the prevailing wisdom was that I should have gone 4.56 with my tire/trans combo. I knew I would likely go to 35s eventually, which is why I went with 4.88 to plan for the future. It became quickly clear that the prevailing wisdom was wrong and was undergearing everyone who followed it. That was when I began running the calculations and learned how very wrong the prevailing wisdom was.
With my bad habits is that I'd want my Lj to do this but also still be a rock crawler/daily
Hi there,Troll here ! I'm very much so fed
speeding_infraction
TJ Enthusiast
With my bad habits is that I'd want my Lj to do this but also still be a rock crawler/daily
Perfectly reasonable request. Just need a huge hemi
Similar threads
