Jeep Strokers

Currently I am at a 14.5:1 CR, so i will have to drop it down, i was thinking something in the 9.5 to 10:1 range. I will be using 118 octane racing fuel. The Rods are custom H beam, the pistons are diamond forged pistons, but I have to replace them to go with the lower CR. I will probably stick with Diamonds. The Crank is a stock 12cw, and i could swap it out for a 505 unit, however i have never heard of anyone breaking a crank on a Jeep. I do have a line on a 3" stroke billet crank that was used in the stadium trucks back in the day. This crank is not as prone to harmonics as the standard crank. That would change my total displacement to 3.71 L and would probably let me rev to 8,000 rpm. without a problem.

N2OFFROAD wrote:

SilverXJ wrote:FWIW RIck Rimmer is working on another super sharger for the 4.0L. He had made a few in the past, one of which was in JP magazine . A friend of mine picked up a used unit on ebay for a low price. He has been trying to work with Rick for the past 2 years to get some missing parts for the install. Progress has been slow.

http://www.jpmagazine.com/howto/5472/index.html

Thanks for the article. If you went with a Eaton supercharger what model or size would be best to go with for the 4.0? The article didn't give any info on the Eaton supercharger. And also I was wondering on how much horsepower can a stock fuel line handle before going to a bigger fuel line? I do understand going with forced induction you have to go with bigger injectors, but just wonder about the fuel line limit.

To answer your other question about the Eaton superchargers, the unit used was an M90. The cases are very different, but the internals are the same as the blowers in GM cars with the 3800 series engine. Another design was also used on the Ford super coupes from the early 90's (3.8 liter engines; this is the model I used.) They will definitely work well on a 4.0, but max horsepower will be limited by the amount of air the blower can push before it loses efficiency. I picked one for my Jeep because of the immediate boost and torque provided. It was also far cheaper than any kit I could find. Being a TJ, I had a lot of room to play with under the hood, so i chose to keep my ac compressor. I don't know what your under hood layout looks like, but with a little cutting and welding you might be able to pull off something like this...

Thanks for your input and to some usefull info and to the others that have responded as well. After studying which would give me more power turbo vs supercharger, I am considering very heavly going with turbo for couple of reasons. Installing a turbo with a intercooler seems more simpler, being it can be mounted anywhere on vehicle plus your not limit to building more hp than with supercharger. I not sure about what turbo size to go with and what stroker to build to get my 500 hp plus, anybody have some suggestions?

The blow off valve also protect

s the butterfly from the boost pressure . It is typically mounted after the intercooler . At the moment the throttle is closed the turbo is still at full boost . For a moment there is a load on the butterfly . Being close to the throttle body it is more responsive.

Accurate Power

This is my Stroker XJ, MP90 Supercharger. I have installed the engine with custom Bulltear pistons and Supercharger, a few days ago, for second time.

This is Rimmers New Colaboration...

http://boostecus.com/index.php?option=c ... &Itemid=26

Here it is:

Its not Rimmer's. Its made by an Australian company. Given Rick Rimmer's customer service (or lack of) and numerous previous failures I won't touch any current offering with his name attached to it with a 10 foot stick.

montelibre, That doesn't clear the hood, does it? If it doesn't what are you planning for it?

I at one point was also extremely interested in supercharging my jeep with a M90 or similar..but because of lack of info, and limited placement I woahed of..It would be awsome because of the instant power, and such, but wheres there threads, so something at least? Build threads, discussion threads with good tech in them? I haven't found much at all, besides "kits"!

I've seen very few videos, and 0 build threads.
This is my all time favorite video, looks very complete very well thought out, and it doesn't have a supercharger whine at idle..
http://www.youtube.com/watch?v=M4tMozlNS1E

Honestly I think the narrator sounds kind of funny..how he speaks, or sounds I guess.

Heres another M90 video on a wrangler..you can here the supercharger whining at idle! That annoying hum at idle, would get old very fast lol..I like the first & third video because theres no hum or whine at idle.
http://www.youtube.com/watch?v=dhGD1-Iz ... re=related

Another wrangler, sounded like he needed to tighten his belt..squeal upon revving.
http://www.youtube.com/watch?v=35ADXeIC ... re=related

And another
http://www.youtube.com/watch?v=CefIFpMI7ag


I still to date have no found a good build thread with pictures or explanations on how to do it ect ect..just those videos. I'm hoping the Red one, the first video posted comes through with updates, as it was pretty dang recent!

This Vortech S/C is nice but you loose the A/C

Here is a Powerdyne S/C and it keeps the A/C

Say all you want about Rimmer but I think that this is the best one out there to date.

this is mine (AC,compressor,SUPERCHARGER)

this one i did for a friend last weak,still not ready!!