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Unread 08-29-2008, 08:40 PM   #1
93_zj
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5.2 supercharger kit?

ok,i'm probably going to get flamed for posting this,i did try the search function first it kept coming up with things that had absolutely nothing to do with what i'm looking for,anyways, i just bought a 95 grand cherokee v8 laredo,obviously it has the 5.2 or 318.my question is do any companies still offer a supercharger kit for my grand cherokee?

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Unread 08-29-2008, 08:47 PM   #2
Dillonzj
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why would you get flamed for this? it has nothing to do with 22" rims

but yeah I am pretty sure there is a company out there that still make them.. not sure what the web sites called.. I know there really expensive. nasmd454 knows a lot about the performance mods for the 5.2s he has an amazing ZJ.. maybe try sending him a PM or maybe he well post here..

Good luck
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Unread 08-29-2008, 09:18 PM   #3
Shelbyzz
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I don't know - for the $6,000(parts)+$2500(install) to put a supercharger in, then all the other engine upgrades you would need, you could almost get a whole new better engine - I just googled a 454 turnkey crate is going for $10,700?, then after you get the super charger in and running you are going to break some other engine parts, just a stock 5.2L would probably not hold up a supercharger without a ton of engine upgrades, and what do you think about tuning an aftermarket supercharger - no thanks!
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Unread 08-30-2008, 07:06 AM   #4
rm2001wj
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I think KRC is about the only place you can get an SC kit for a ZJ. This link will help.

http://www.krcperformance.com/krc/in...mart&Itemid=26
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Unread 08-30-2008, 07:37 AM   #5
HighLonesome
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Adding the supercharger to a well-built 408 stroker will you into the 500+ hp range with Cummins-like torque. There is a writeup on one of the Dakota forums. The guy dynoed around 550hp/550lbs on pump gas. I think he carbed it, can't remember for sure. You'd need at least OBD2 to even consider. Wonder how long the 44RE would last?
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Unread 08-30-2008, 08:15 AM   #6
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A couple of years back, okay greater than 10, Don-a-Vee and Overlander sold an Interstate version of the ZJ which was a superchargered 5.2.


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Unread 08-30-2008, 11:02 AM   #7
Aceladriver
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for my 2 cents - it doesn't really need to be OBDII but a lot of that really depends on your state emissions.

Assuming you don't have to worry about inspections you can run it through a piggyback or standalone system. You could even go with a carb but they have to be specially built to work with SCs and are expensive.

Here in MA OBDI emissions is supposed to be going away in October. That pretty much means no holds barred although I have heard differing opinions as to whether that means no visual inspection and no emissions inspection at all, or if it just means not having to pass the sniffer test.

For a simpler performance enhancment you could throw in a 5.9 motor. Of course you could still throw an SC on that too.
Believe me, blown 5.9s are way fun, even moreso with a 5spd.

Makes for an extremely fun driver but I don't think it will beat an auto trans in the 1/4 mile (if you even care about that stuff)
Available trans/axle gearing means you don't spend long enough in 1st and 2nd gear to get anywhere near the power band and the time spent shifting takes the edge away. Once it's moving it's pretty beastly :-)
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Unread 08-30-2008, 10:27 PM   #8
JCZJ
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What would become vulnerable to failure after you put on the supercharger kit that rm2001wj posted? In my mind, if youre not tracking the vehicle, and you keep the boost on the low side, it would be fine..wouldn't it? I'd imagine that it would put more stress on the engine, but it's not going to make something explode the first time you decide to accelerate a little harder than normal would it?
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Unread 08-30-2008, 10:58 PM   #9
nashmd454
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Quote:
Originally Posted by rm2001wj View Post
I think KRC is about the only place you can get an SC kit for a ZJ. This link will help.

http://www.krcperformance.com/krc/in...mart&Itemid=26
thanks....I was going to post this same link for him. Th eonly reason I haven't done it is that I think 4k is a bit mych for 89 ponies. Would rather just stroke or get a bigger motor for that price.
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Unread 08-31-2008, 08:40 AM   #10
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Quote:
Originally Posted by JCZJ View Post
What would become vulnerable to failure after you put on the supercharger kit that rm2001wj posted? In my mind, if youre not tracking the vehicle, and you keep the boost on the low side, it would be fine..wouldn't it? I'd imagine that it would put more stress on the engine, but it's not going to make something explode the first time you decide to accelerate a little harder than normal would it?
Actually, as long as detonation in the cylinders can be prevented, supercharging puts a surprisingly small amount of extra stress on the engine or the drive train. The main reason for this is that the extra power comes on gradually and not all at once. That means engine parts and drivetrain parts are moving as increasing power is being produced. If maximum power could be applied all at once to a non-moving vehicle, any number of things could break.

If detonation occurs, typically it's a piston, and/or a rod, and/or possibly a head gasket that goes. More strongly built engines can survive brief periods of detonation but not long periods.
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Unread 08-31-2008, 09:12 AM   #11
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Found the writeup. Check this bad boy out. Great read
http://www.truckinweb.com/brandpages...ker/index.html
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