danbyrambler Posted July 4, 2015 Posted July 4, 2015 "Project 242: AMC Jeep Six" Rebuilding and hopping up a 4.0L Jeep Their words - - Don't know a thing about it. Sunday 7/5/15 8:30 AM - Central - - - DirecTv Chan 241 SPIKE Don't know Dish or Cable numbers
johnj92131 Posted July 4, 2015 Posted July 4, 2015 Dan, Thanks for the heads up on this program. Spike TV 6:30 a.m EST Sunday 7/5/2015 PowerNation: Engine Power Project 242: AMC Jeep Six TV-PG 30 minPat and Mike rebuild and hop up a 4.0L Jeep straight six with trick cam, modified intake and aluminum head. Wonder if it is a HESCO or Edelbrock head? Likely Edelbrock because it is new and because Edelbrock is a better known name. I should record it.
Megadan Posted July 4, 2015 Posted July 4, 2015 Dan, Thanks for the heads up on this program. Spike TV 6:30 a.m EST Sunday 7/5/2015 PowerNation: Engine Power Project 242: AMC Jeep Six TV-PG 30 minPat and Mike rebuild and hop up a 4.0L Jeep straight six with trick cam, modified intake and aluminum head. Wonder if it is a HESCO or Edelbrock head? Likely Edelbrock because it is new and because Edelbrock is a better known name. I should record it. Given as Edelbrock is usually a big sponsor of shows like this and they just recently came out with their new aluminum head, I will give you a good solid guess.
johnj92131 Posted July 4, 2015 Posted July 4, 2015 Edelbrock Head. Here is a parts list from the show web site: http://www.powernationtv.com/episode/EP2015-14/project-242-amc-jeep-six
Megadan Posted July 4, 2015 Posted July 4, 2015 Looks like they are going to use a 4.2L 4bbl carb intake and run a FAST EFI setup on it. I Definitely want to see what results they get with the parts they are using.
Blue XJ Posted July 7, 2015 Posted July 7, 2015 It was a late model XJ manifold modified to have a carb base welded to it. The power was pretty low, considerably lower than stock, so they put a carburetor on it. Not as cool of a build as it could have been.
HOrnbrod Posted July 7, 2015 Posted July 7, 2015 Interesting build. HP/Torque numbers peaked out at 33* BTDC with a 66 unit increase on both, with 243HP for the 242. Not too bad. Those HS roller rockers are sweet too.
johnj92131 Posted July 8, 2015 Posted July 8, 2015 Did I miss the rpm at peak horsepower and torque? Also, the cam spec seemed rather wild to me. Lift .512? Picked for peak power over low end torque? Any mention of the compression? How are they going to get that engine in an emission legal Jeep? Answer - they are not. Best thing I got out of the show was the ignition advance for peak power. Wonder how close that is to stock timing?
fiatslug87 Posted July 8, 2015 Posted July 8, 2015 I just watched it, loved the initial 133 hp and subsequent dump of their fuel injection for the 750 carb. Their response to the 133 hp was classic.
Blue XJ Posted July 8, 2015 Posted July 8, 2015 They said it was a Crane cam, but that was it. I wanna say the Crane I am running has similar lift, but this sounds like the one they were talking about. It's the only one that has .512 of lift, but its on the exhaust http://www.summitracing.com/parts/crn-753941/overview/ It seems most people that have ran the Crane cams on their strokers are getting 35-40k out of them before they fail, including myself, I have a new cam to put in whenever I get some time.
neohic Posted July 12, 2015 Posted July 12, 2015 Just watched this online. Interesting build but I've been disappointed with the crappy job these guys do with their welding just about everytime I see them do any. Granted welding on anything cast can be a hit or miss, but more pre-cleaning the material can go such a long way. :ack:
Rockfrog Posted July 12, 2015 Posted July 12, 2015 I was surprised they didn't even try tuning it, just jumped to the carb. Not even a change in injector size was attempted. Not to mention the EZ-efi still has to tune itself on top of it all. Meh!
johnj92131 Posted July 13, 2015 Posted July 13, 2015 That picture, I think, was just a tack it in place weld. They showed some additional welding to "finish the adapter. Frankly, the program struck me as just a glorified product pitch. Better than the Home Shopping Network, but not any real educational value in the program. Just watched this online. Interesting build but I've been disappointed with the crappy job these guys do with their welding just about everytime I see them do any. Granted welding on anything cast can be a hit or miss, but more pre-cleaning the material can go such a long way. :ack:
neohic Posted July 13, 2015 Posted July 13, 2015 That picture, I think, was just a tack it in place weld. They showed some additional welding to "finish the adapter... That picture was of oversized tacks, yes. However, the finished product was also... uh... :ack: All that goldish color is all contaminants burning on the surface. The clouding along the edges of the welds are also a sign of terrible cleaning or they need to play with their AC balance on the machine. That black spot way to the right? Somebody needs to keep their tungsten out of the puddle. "Professionals". :shake: Still a neat project but it's always the welds that kill a project for me.
Strokermjcomanche Posted July 13, 2015 Posted July 13, 2015 I wonder how much hood clearance (if any) there is with that carburetor , and don't forget about the air filter ..
outlaw star Posted July 15, 2015 Posted July 15, 2015 Just watched this online. Interesting build but I've been disappointed with the crappy job these guys do with their welding just about everytime I see them do any. Granted welding on anything cast can be a hit or miss, but more pre-cleaning the material can go such a long way. :ack: I believe that's the downside of why that EFI unit failed miserably. They tried messing too much with the flow characteristics of that manifold instead of buying the 4.0L carb manifold designed for it. (Clifford's) That "neck" of the adapter sat too far into the intake, so I believe that created a restriction along with adding too much volume for the intake runners to handle. Proper intake design is crucial to how and where you make your engines power. Generally you use longer, smaller runners (the "tubes" of the intake) for low end power. And you use shorter, larger runners for higher RPM power (look at a NHRA or NASCAR intake). These guys were trying to go for High RPM power with a large air/fuel source and skinny runners. Granted, the EZ-EFI was capable of fine tuning but they got impatient instead of thinking things through IMO. That head is a 1k head but for that price, you can stroke the 4.0L or a 258 and get more power. I mean if they spent that on the head, the right manifold is only 390 bucks so just get one cause obviously money was not an issue.
johnj92131 Posted July 16, 2015 Posted July 16, 2015 Talking about the power from the Edelbrock head - the one fellow who jumped early for the Edelbrock head is a bit disappointed in his results. Says if he were to do it over, it would be without the Edelbrock head. My issue with shows like this: They are just a variation on the ink for stuff deals in the magazines. The vendor gives writer/publishers the stuff, writers write glowing stories, publisher sells magazines with paid advertising. No real critical thinking goes into the show or the magazines.
Minuit Posted July 16, 2015 Posted July 16, 2015 I wonder how much hood clearance (if any) there is with that carburetor , and don't forget about the air filter .. 5 bucks says they didn't even consider that. The purpose of this build is no doubt just for show (and of course, advertising kickbacks from the companies they used parts from)
boman40 Posted July 18, 2015 Posted July 18, 2015 They should have up sized the injectors and would have got the horse power that they wanted! I wonder if they would give me the parts, I could do wonders with them. Stroke it, would have been better. Bigger valves, and a roller cam.
Megadan Posted July 18, 2015 Posted July 18, 2015 Talking about the power from the Edelbrock head - the one fellow who jumped early for the Edelbrock head is a bit disappointed in his results. Says if he were to do it over, it would be without the Edelbrock head. You would have to build around taking advantage of the aluminum heads cooling capability. This includes the ability to bump the compression up a bit, and/or run lower octane fuel types with the same compression. If I were going to build a 4.0 I would consider the Edelbrock head.
CobraMarty Posted July 19, 2015 Posted July 19, 2015 Dyno queen. Maybe in a mud bog buggy. Disappointed. Stock pistons with huge quench, Needed to port the intake runners and cut shorter the carb adapter insert portion. Surprised with that big cam and better flowing head and 4 barrel carb it only reved to 5000. Now do a real world build with factory EFI and ignition control.
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