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Discussion Starter · #1 ·
Anybody have a supercharger on the 3.8L with over a 100k on the clock? Trying to determine if a Hemi swap would be better for the Jeep as mine just rolled 101,000.

I really like the way the new Magnusen supercharger kit looks and performs though.
 

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I would definitely do it. I hear these motors aren't that great at lasting. If you are like me you have a wife trying to reign in the modification costs. S if I were you and you have to share money so to speak, I would go ahead with the supercharger. Because if the engine blows up you will have to get another one regardless. If the engine shits the bed before a mod, having to purchase a new engine may prevent you from getting a supercharger. I like the Magnuson as well. Go for it.
 

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Discussion Starter · #3 ·
I would definitely do it. I hear these motors aren't that great at lasting. If you are like me you have a wife trying to reign in the modification costs. S if I were you and you have to share money so to speak, I would go ahead with the supercharger. Because if the engine blows up you will have to get another one regardless. If the engine shits the bed before a mod, having to purchase a new engine may prevent you from getting a supercharger. I like the Magnuson as well. Go for it.
That seem counter intuitive... :cwm13: If the engine isn't going to last long, adding forced induction and increasing stress on the motor will only accelerate its untimely demise. This makes me lean towards getting a new motor, might as well just make it a Hemi then.
 

· The Wheelin Man's Friend
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I just recently replaced the motor in a 104K mile JK that had a bad knock. (See thread Ole Tink Tink here)

Looking at my options, with pretty good connections and friends in the business, I still put another 3.8 in the Jeep. If you're going to put a $5000 super charger in it, I'd spend the extra money and put a $10-$12K HEMI conversion in it. :)

I spent $600 on a motor without the intention of doing any power adders to it, so I'm not a good comparison. What I'm getting at is, you're going to spend $5000 on a super charger with the chance of having to spend another $1000 on the motor if it gives out. Just spend the money right and buy a V8.

Marcus
 

· A JKO DICK
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I just recently replaced the motor in a 104K mile JK that had a bad knock. (See thread Ole Tink Tink here)

Looking at my options, with pretty good connections and friends in the business, I still put another 3.8 in the Jeep. If you're going to put a $5000 super charger in it, I'd spend the extra money and put a $10-$12K HEMI conversion in it. :)

I spent $600 on a motor without the intention of doing any power adders to it, so I'm not a good comparison. What I'm getting at is, you're going to spend $5000 on a super charger with the chance of having to spend another $1000 on the motor if it gives out. Just spend the money right and buy a V8.

Marcus
Isn't an LS really doing it right?
 

· The Wheelin Man's Friend
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Please elaborate on the cleaner part. Also what about actual performance. Which ones did you drive?
Just more plug and play, finished. HEMI was an AEV kit 5.7 Commander motor. The LS is a 5.3 from a late model Tahoe/Silverado with the 6 speed. Both aree JKUs on 37s.

I think I am not an LS fan because of my experience with my 11 Sierra. I hated the motor and transmission in that truck from the day I bought it. I also had the 5.7 in a WK and it just felt more spirited to me vs the very linear power delivery 5.3 GM motors. Even with the TM (torque management) removed it just didn't blow my skirt up.

That being said, I've always been a GM truck guy. I just don't get along with the new technology. :)

Marcus
 

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You can probably swap a 5.3 for cheaper than a hemi...especially if Motech releases the bare bones kit he mentioned a while ago.


Are you planning on doing the swap yourself? If you are doing all the labor, then a swap can be done around 10K but if you are going to pay someone then the difference in cost between swapping and supercharging are ALOT bigger...
 

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Discussion Starter · #14 ·
You can probably swap a 5.3 for cheaper than a hemi...especially if Motech releases the bare bones kit he mentioned a while ago.


Are you planning on doing the swap yourself? If you are doing all the labor, then a swap can be done around 10K but if you are going to pay someone then the difference in cost between swapping and supercharging are ALOT bigger...
I have done enough engine swaps and tranny rebuilds to be undaunted by this. The wrench twister in me hopes I can convince the misses to go the Hemi route... Although more money into the Hemi swap means less for other goodies...
 

· A JKO DICK
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You can probably swap a 5.3 for cheaper than a hemi...especially if Motech releases the bare bones kit he mentioned a while ago.


Are you planning on doing the swap yourself? If you are doing all the labor, then a swap can be done around 10K but if you are going to pay someone then the difference in cost between swapping and supercharging are ALOT bigger...
You can buy a HEMI, Trans, and kit for $7,000. Pay another $3500 and have it done. Can you do an LS that cheap? (not being a dick, I really don't know) It seems like the LS motor and trans cost more that that.
 

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You can probably swap a 5.3 for cheaper than a hemi...especially if Motech releases the bare bones kit he mentioned a while ago.


Are you planning on doing the swap yourself? If you are doing all the labor, then a swap can be done around 10K but if you are going to pay someone then the difference in cost between swapping and supercharging are ALOT bigger...
This is the part that many people fail to add into the "cost" of a motor swap. If you aren't doing the work it turns into a $20k project real fast.
 

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You can buy a HEMI, Trans, and kit for $7,000. Pay another $3500 and have it done. Can you do an LS that cheap? (not being a dick, I really don't know) It seems like the LS motor and trans cost more that that.
I havent looked in a while but I think you will be hard pressed to find a hemi engine and trans for 1500 (AEV conversion kit is 5549 as example). Who is doing 3500 in labor for the swap?

Motech kit starts at 5200 and you can def find a 5.3 for less than the cost of a hemi. The 6.2 is a totally different animal though...
 

· A JKO DICK
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I havent looked in a while but I think you will be hard pressed to find a hemi engine and trans for 1500 (AEV conversion kit is 5549 as example). Who is doing 3500 in labor for the swap?

Motech kit starts at 5200 and you can def find a 5.3 for less than the cost of a hemi. The 6.2 is a totally different animal though...
Last time I looked Jeep Speep Shop was doing them for $3500 kit, $3500 motor and trans(5.7 truck motor), $3500 labor. Street legal turn key if I remember right.
 

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Discussion Starter · #20 ·
Installed my Sprintex at 104k. 114k on it now and still running great.
Here's a link to check out:
http://www.jkowners.com/forum/showthread.php?t=88265
Thats what I needed to see! Thanks!

Last time I looked Jeep Speep Shop was doing them for $3500 kit, $3500 motor and trans(5.7 truck motor), $3500 labor. Street legal turn key if I remember right.
The JSS kit for $3500 does not include the radiator or exhaust components. Add those 2 in plus a computer core charge and you are over $5k. The AEV kit seems much more complete.
 
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