Decided to supercharge over a swappina to a Hemi

[ShadowsPapa]

You bring up a valid point, but there’s a very easy, factory designed an engineered work around that works fine for me in my stock Gladiator. That’s to use the manual side of the shift, that will prevent constant downshifting. I can only imagine how that would work with a supercharger adding power at lower rpm’s. Not to the point of lugging at deep throttle positions no, because any more than 2/3rds to 3/4 throttle the computer will downshift as many gears as it’s told. That when stock really brings up the rpm’s! Can’t imagine what that would do with a supercharger adding pressure. But adding an extra 100 rwhp at half throttle would be a game changer. While not demanding too much.

Nd force it into high valve lift and generate more heat? No thanks, let it rev like it's engineered to do!
I don't get this desire to force higher loads and lower rpm
Let er rip.

Sponsored

 

[MaximusTX]

I, personally, just don't want to put premium in anything.

Not only is it expensive AF, it limits where I can go around the UP when there's only 1 station in a 40 mile radius and it only sells rec fuel and 87.

On this topic I am curious if the AMW swaps require Premium Fuel. I know on my wifes Wrangler 392 it required Premium fuel. On that one it did suck. It cost around $70 to fill and we could only go maybe 200 miles on it. We ended up trading it in as we had too many issues with it and now she has a Mini Cooper JCW that still takes premium but it costs $30 to fill and can go almost 400 miles on a single tank.

 

[Jrgunn5150]

On this topic I am curious if the AMW swaps require Premium Fuel. I know on my wifes Wrangler 392 it required Premium fuel. On that one it did suck. It cost around $70 to fill and we could only go maybe 200 miles on it. We ended up trading it in as we had too many issues with it and now she has a Mini Cooper JCW that still takes premium but it costs $30 to fill and can go almost 400 miles on a single tank.

The AMW 425 does not require premium.

 

[ShadowsPapa]

On this topic I am curious if the AMW swaps require Premium Fuel. I know on my wifes Wrangler 392 it required Premium fuel. On that one it did suck. It cost around $70 to fill and we could only go maybe 200 miles on it. We ended up trading it in as we had too many issues with it and now she has a Mini Cooper JCW that still takes premium but it costs $30 to fill and can go almost 400 miles on a single tank.

Another negative - the limited range of gas Jeeps.
It would have to be de-tuned to run 87 or less, or just not placed under heavy loads. They are high performance engines - what would one expect?

 

[ShadowsPapa]

The AMW 425 does not require premium.

Then they have detuned it, or are otherwise dealing with detonation. Sure, you can "run 87" but it's going to kick timing back and so on. Can't have it both ways.

 

[Jrgunn5150]

Then they have detuned it, or are otherwise dealing with detonation. Sure, you can "run 87" but it's going to kick timing back and so on. Can't have it both ways.

I don't care.

I can run 87.

That's the goal.

They can keep the 16 horsepower.

 

[MaximusTX]

I experimented with the manual shift on my last trip and it worked well but at what rpm are you downshifting? And what happens when you forget to downshift at a stop? Does it take over and downshift for you? When I had a true manual it was easier to gauge when to downshift.

I had to use the manual shift on a trip to force a regen and it will auto downshift for you when you slow down to a stop. You just have to manual shift up.

 

[JTdiRtyD]

Then they have detuned it, or are otherwise dealing with detonation. Sure, you can "run 87" but it's going to kick timing back and so on. Can't have it both ways.

With todays distributer-less timing most modern N/A tuning has enough self correction to adjust for all fuel grades. You'll lose performance, but they'll run fine.

 

[NC_Overland]

The actual difference in the cost of running premium gas vs regular is a lot less than most people realize when you figure out the cost difference per tank, month, etc. I just did the math on the girlfriend’s turbo Mazda. It’s only like $30/mo difference and she commutes 60 mi/day and it also gets a few mpg better a gets the full 320 ft lbs of torque. It’s actually less than $30/mo if you figure in the mpg difference. If you’re worried about that small amount of money, but willing to spent ten of thousands on a drivetrain swap, then I’m not sure what to tell you.

 

[AmosMoses]

Interesting how a "I am doing this" thread turns into a pick it apart thing.

It is a discussion forum. I didnt see a disclaimer saying "if you dont like my idea, don't reply".

 

[Jrgunn5150]

If you’re worried about that small amount of money, but willing to spent ten of thousands on a drivetrain swap, then I’m not sure what to tell you.

I am.

And I still am, even if your super sweet Mazda only costs 30 bucks a month for all the extra whooshes.

Not only is it a 1700 a year difference for me. It's flatly not available many places I go.

 

[NC_Overland]

I am.

And I still am, even if your super sweet Mazda only costs 30 bucks a month for all the extra whooshes.

Not only is it a 1700 a year difference for me. It's flatly not available many places I go.

First of all, no need for the sarcasm. It is actually a pretty damn nice vehicle. Secondly,
$1700/yr? How? That’s based on 15k miles/yr at 25 mpg. I have no idea who you could jump like 5x higher.

 

[Jrgunn5150]

First of all, no need for the sarcasm. It is actually a pretty damn nice vehicle. Secondly,
$1700/yr? How? That’s based on 15k miles/yr at 25 mpg. I have no idea who you could jump like 5x higher.

I don't have a zoom zoom Mazda, I have a Gladiator.

 

[Flyin6]

Just my 2 cents, but I think the AMW option is the more mature of the two. While not scientific or data reproduceable by any means, just appears in my perception that AMW conversion owners are more satisfied than I have seen of those that went to some forced induction option with the current 3.6L Pentastar. Latter just seems like a more fiddly setup with a few just giving up, removing and selling off the parts.

Depends on your point of reference, I suppose...
When I was digging into this, I talked to the lead mechanic of a shop that had done over 60 AMW swaps. I mentioned the increase in mileage...He laughed. He said they were seeing 10 mpg on most 6.4s, and they did not like doing 5.7 swaps. He thought the process was a PITA with parts trickling in over months and the high cost, $30K over the price of a supercharger!
That alone makes the SC option a slam dunk.
Seriously, all we need is a bit more torque to drive the JT like a real truck. So why spend the cost of a new Gladiator to improve the performance? For the guys going to 700-800-1000HP, that is a different thing, and for what, the price of a small house?

 

[ShadowsPapa]

The actual difference in the cost of running premium gas vs regular is a lot less than most people realize when you figure out the cost difference per tank, month, etc. I just did the math on the girlfriend’s turbo Mazda. It’s only like $30/mo difference and she commutes 60 mi/day and it also gets a few mpg better a gets the full 320 ft lbs of torque. It’s actually less than $30/mo if you figure in the mpg difference. If you’re worried about that small amount of money, but willing to spent ten of thousands on a drivetrain swap, then I’m not sure what to tell you.

Yeah, concerned about spreading a little extra cost over a whole year vs spending many thousands all at once.
I wonder- could you get by with 88 or similar with what he's planning? If so, it would be just fine here.
Sure, the book says to run 91 in the JLU V8 - but many don't, and just don't push it.
How about supercharging? Is it necessary, or just "you are better off" sort of thing.
if I was really concerned about 30 bucks a month, I'd sure not own a modern Jeep - the license fees, up front cost - seems to me, that should even be a consideration when talking Jeeps..
Cost to fill a tank in a Jeep forum?
That's like talking performance - 0-60 times in a Jeep place.
If that's the concern, you are in the wrong vehicle.

Sponsored