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Old 11-07-2007, 07:05 PM   #1 (permalink)
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Stroker Kit for AMC Inline 6 4.0?

Does any one know how much a stroker kit or where i can get one or who makes it. for an inline 6 4.0?????
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Old 11-07-2007, 07:06 PM   #2 (permalink)
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Old 11-07-2007, 07:10 PM   #3 (permalink)
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you wouldnt by any chance know how much they are????
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Old 11-07-2007, 07:15 PM   #4 (permalink)
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Sweet jesus. Go to www.google.com and type in jeep 4.0 stroker. There will be more information that you can handle with prices and even pictures.
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Old 11-07-2007, 09:09 PM   #5 (permalink)
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And it isn't a AMC inline 6 4.0 it is made by Jeep. And what is hardcore about a stroker kit?
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Old 11-07-2007, 11:55 PM   #6 (permalink)
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And it isn't an AMC inline 6 4.0 it is made by Jeep.
Oh really? Who designed the 4.0L?

Fucking geniuses.
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Old 11-08-2007, 04:50 AM   #7 (permalink)
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Old 11-08-2007, 06:33 AM   #8 (permalink)
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Whatever you do, do not buy a single product from Golen Engine Service. A complete waste of human life for those working up at his shop trying to build a motor. Keyword "trying." For what I now have into my stroker, I could of had a built 383.
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Old 11-08-2007, 09:18 AM   #9 (permalink)
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Oh really? Who designed the 4.0L?

Fucking geniuses.
Look DUMASS the 4.2 was an AMC engine not the 4.0. It was not even introduced until AFTER Chrysler bought up Jeep.
Yes AMC designed the 4.0 but Jeep/Chrysler produced it. So I wouldn't call it a AMC engine.
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Old 11-08-2007, 09:28 AM   #10 (permalink)
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Yeah

Build your own. Plenty of write ups on the net that tell what parts work. Google or Yahoo.

Basically you're putting a 4.2 crank into a 4.0 block. You can do it using pretty much all factory parts. I'd aim more for torque than horsepower. Mild Crower cam.
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Old 11-08-2007, 10:53 AM   #11 (permalink)
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Make sure you buy a kit so that leaves me a chance to get a 258 at low cost from a junkyard to build my stroker.

And there is not much of a difference between the 4.2 and 4.0. Basically same engine
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Old 11-08-2007, 11:29 AM   #12 (permalink)
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Just a note:

The 4.0L inline 6 (I6) engine was introduced in the Cherokee in the late 80s and in the YJ in 1991. The cylinder design is based on the changes made to the fuel injected 2.5L I4 engine. The block and cylinder head are cast iron. It uses 7 main bearings and hydraulic lifters. The HP and torque gains are substantial over the older carbureted 258, but the peaks come at higher RPM. The fuel injected engine performs much better in off-camber, bouncy, and steep situations. It also calibrates better for changes in altitude. Fuel economy is also improved.



The 4.0L engine used in the Wrangler from '91 until the present.

4.0L I6
Bore x Stroke 3.88" x 3.41"
Displacement 242 (4.0L)
Compression Ratio 8.8:1
Horsepower (net) 180@4750
Torque (net) 220@4000
Main Bearings 7
Valve Configuration OHV
Fuel MPI


The 4.0L I6 that is used in the XJ and ZJ is rated slightly higher than the YJ and TJ 4.0L engine probably due to a different exhaust system.

4.0L I6
Bore x Stroke 3.88" x 3.41"
Displacement 242 (4.0L)
Compression Ratio 8.8:1
Horsepower (net) 185@4750
Torque (net) 220@4000
Main Bearings 7
Valve Configuration OHV
Fuel MPI

NOT sure what you are looking for... HP or torque???

There are a ton of options to increase HP
STROKE for torque!!!
and if you plan on doing all the work yourself... go to your local dismantler first.
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Old 11-08-2007, 12:19 PM   #13 (permalink)
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Quote:
Originally Posted by wildman4x4nut View Post
Look DUMASS the 4.2 was an AMC engine not the 4.0. It was not even introduced until AFTER Chrysler bought up Jeep.
Yes AMC designed the 4.0 but Jeep/Chrysler produced it. So I wouldn't call it a AMC engine.
Ummmm so yeah, it's an AMC motor, they designed it. Thanks for playing.

Your argument makes no sense, if you go by your definition any 360, 258, etc after 1987 is a Jeep motor and not AMC. Man, all these years I have been thinking the motors after '87 were AMC's, crazy...

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Old 11-08-2007, 02:34 PM   #14 (permalink)
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Yeah

I believe the 4.0 actually came out before Chrysler bought AMC. Sometimes you'll here it referred to as a Renix motor. As far as I can tell, Renix is actually the computer control system, but there's the possibility that Renault had a hand in revamping the 4.2 litre into the 4.0 litre Renix is a contraction of Renault and Bendix.

So basically, the 4.0 is a joint venture between AMC, Renault, and Bendix. Chrysler later bought AMC, though curiously AMC wasn't really floundering that bad. They actually turned a profit the year before Chrysler bought them. The 4.0 HO stuff was done under Chrysler.
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Old 11-08-2007, 02:55 PM   #15 (permalink)
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Summary:
Kaiser bought Willys in 1953, AMC bought Kaiser in 1970, and Chrysler bought AMC in 1987. Then Chrysler merged with Daimler in 1998. The Germans who lost the war to the Jeep now own it!

LONG VERSION:
4.0

The 4.0 L (242 cu in; 3956 cc) straight-6 was an evolution of the 258 and 2.5 and appeared in 1987. It had the same 3.88 in (98.4 mm) bore as the 2.5 with a longer 3.41 in (86.7 mm) stroke. The 4.0 was discontinued at the end of the 2006 model year as the redesigned Jeep Wrangler uses Chrysler's 3.8 L OHV V6.

The first 4.0 engines in 1987 had RENIX (Renault/Bendix) engine control systems, which were quite advanced for their time, but are now handicapped because there are very few scan tools which can be "plugged in" to a RENIX system for diagnosis. The Renix also used a very advanced engine knocking sensor, which allowed the computer to know if detonation was occurring, thus allowing the computer to make the appropriate changes to prevent this.

The 1987 RENIX 4.0 made 173 hp (129 kW) and 220 ftlbf (298 Nm) of torque. In 1988 the 4.0 received higher flowing fuel injectors, upping output to 177 hp (132 kW) and 224 ftlbf (304 Nm).

In 1991 Chrysler Corporation, having bought AMC, were the new owners of the Jeep brand. Chrysler redesigned the RENIX engine control computer and raised the intake ports approximately 1/8-inch (3.175 mm) for a better entry radius. Chrysler also enlarged the throttle body and redesigned the intake and exhaust manifolds for more efficiency, and the fuel injectors were once again replaced with higher flowing units. The camshaft profile was also changed. The net result of all these changes was an engine that made 190 hp (142 kW) and 225 ftlbf (305 Nm) of torque. Badging on most Jeeps equipped with this engine read "4.0 Litre HIGH OUTPUT". The new cam profile combined with altered computer programming eliminated the need for an EGR valve and knock sensor, but made the engine more sensitive to alterations, especially where emissions is concerned.

Small changes were made to the cylinder head for the 1995 model year. In 1996, the engine block was redesigned, and a new strengthened unit was then used. The new block made use of more webbing cast into the block, and a stud girdle for added rigidity of the crankshaft main bearings. The cylinder head was also again changed around 1998 to a lower flowing, but more emissions friendly, design. Engines installed in 1999 Grand Cherokees carried the Power Tech name, which was subsequently passed on to 4.0s in all Jeep models.

The 4.0 engine was in production in North America until 2006, when the Jeep Wrangler TJ was replaced by the new JK design that uses Chrysler's OHV 3.8 L V6. It is foreseeable that this engine may be made for many more years in the People's Republic of China, where a slightly modified version of the XJ Jeep Cherokee with 2.5 and 4.0 engines are still being produced.


This engine was used in the following vehicles:

19872001 Jeep Cherokee
19932004 Jeep Grand Cherokee
19871990 Jeep Wagoneer
19871992 Jeep Comanche
19912006 Jeep Wrangler
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Old 11-08-2007, 05:40 PM   #16 (permalink)
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Ummmm so yeah, it's an AMC motor, they designed it. Thanks for playing.

Your argument makes no sense, if you go by your definition any 360, 258, etc after 1987 is a Jeep motor and not AMC. Man, all these years I have been thinking the motors after '87 were AMC's, crazy...

-Dave
Hey Dave,
I guess cause you think it then it must be true???

In all these years I have never thought of the 4.0 as a AMC engine. Guess it just all is what WE think. I do stand corrected as I thought AMC had nothing to do with the 4.0 but I still don't consider it a AMC engine. Now the 4.2(258) yep it is, and the 304/360/401 are AMC engines, but hold it there is a Dodge 360 too!!! Not the same engine are they??

Guess we all can learn something now and then, now go play with yourself.
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Old 11-08-2007, 08:55 PM   #17 (permalink)
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Badging on most Jeeps equipped with this engine read "4.0 Litre HIGH OUTPUT". The new cam profile combined with altered computer programming eliminated the need for an EGR valve and knock sensor, but made the engine more sensitive to alterations, especially where emissions is concerned.
This is hogwash, sorry. The ODB1 4.0L HO computer is by far the best unit for heavy power mods. Far outstrips the Renix with it's problematic knock sensor and the evil ODB2 4.0L ecu.

And IMHO "altered" computer programming is being way to nice to the Renix POS system. I used to own a Renix XJ that had a non-failsafe ABS system that was designed by Peugot - as was the Renix EFI. If that doesn't sum it up right there....
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Old 11-09-2007, 11:11 AM   #18 (permalink)
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This is hogwash, sorry. The ODB1 4.0L HO computer is by far the best unit for heavy power mods. Far outstrips the Renix with it's problematic knock sensor and the evil ODB2 4.0L ecu.
Maybe I'm missing something??? "hogwash???" "best," well that could be debated all day long... I agree that the ODB1 is a good Comp. for the correct application, but emmission control plays a HUGE part in its performance and reliability.

Anyway, I think we JACKED this thread enough.

$1000-$1700 for a "NEW" stroker kit!

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Old 11-09-2007, 03:39 PM   #19 (permalink)
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Hey Dave,
I guess cause you think it then it must be true???

In all these years I have never thought of the 4.0 as a AMC engine. Guess it just all is what WE think. I do stand corrected as I thought AMC had nothing to do with the 4.0 but I still don't consider it a AMC engine. Now the 4.2(258) yep it is, and the 304/360/401 are AMC engines, but hold it there is a Dodge 360 too!!! Not the same engine are they??

Guess we all can learn something now and then, now go play with yourself.
You still don't make any sense
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Old 11-10-2007, 07:33 PM   #20 (permalink)
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You still don't make any sense
Never mind if I have to explain you won't ever get it
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Old 11-10-2007, 10:02 PM   #21 (permalink)
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Maybe I'm missing something??? "hogwash???" "best," well that could be debated all day long... I agree that the ODB1 is a good Comp. for the correct application, but emmission control plays a HUGE part in its performance and reliability.
Really.

I am still having trouble with your information here.

4.0L HO ODB1 is dumb, really dumb. Which comes in handy for what me and some of my buddies are doing - squeezing lots of power out of these old farm implement engines.

Have you ever ripped the wires off your 4.0L ODB1 oxygen sensor while wheeling? Strange - but it actually runs better that way. 'Limp mode" opens the injector bandwidth way up. More fuel = more better for stock 4.0L HO engines.
4.0L ODB1 doesn't even set an engine code worthy of the check engine light when the oxygen sensor is rendered inoperative. Does that sound like a computer that is sensitive to emission control?

I think you may be confused with evil satanic devil spawn ODB2.
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Old 11-11-2007, 10:39 AM   #22 (permalink)
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Never mind if I have to explain you won't ever get it
So do you concider the AMC 2.5 a Chrysler motor also?
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Old 11-11-2007, 06:29 PM   #23 (permalink)
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So do you concider the AMC 2.5 a Chrysler motor also?
To be honest I consider all of them to be a Jeep engine!!

Look dude just drop it. You think what you think and I'll think what I think.

And just on a side note, did you know that Dodge used the 2.5 in the Dakota? So now what do you call it?
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