4.6 I-6 stroker motor

MrShoeBoy · 09-30-2008, 12:24 AM

I currently have a factory 4.2L crank and rods with Sealed Power H802 pistons. A cam, lifters, oil pump, double roller timing chain from Hesco. I have yella terra roller rockers. I did the head porting and polishing, a custom S&B reusable cone filter, Banks header and custom exhaust through a Spintech muffler. It sounds BAD, and people will often ask what motor is in it and dont believe its an inline 6. Also they wont step out in front of me when I am driving along, and even hesatate when they have the walk sign in the crosswalk

I have built 3 motors for my truck, first motor blowing up to parts failing from Crane Cams. Second motor same thing, distributer gear in the cam went soft and shavings ruined all the bearings. I am still on my 3rd motor built from Hesco parts. I would not built a Jeep motor with out the cam, lifters, valve springs, oil pump, and timing chain from them. Oil these days is not as it was a few years ago and the lack of additives makes inferior parts fail super fast.

So my advice for building your motor is to:
*balance the rotating assembly including flywheel/flexplate
*buy all valvetrain components and oil pump from Hesco
*injectors from FMS and adj MAP sensor

That will get you a very good motor for not that much money. If I had to do it over again I would get custom pistons and use 4.0L rods for a better rod angle and a stand along ECU like Accel DFI or Megasquirt.

Good luck, cause any combo of above parts will blow up axle parts, ask me how I know

09-30-2008, 12:24 AM	#9
MrShoeBoy Join Date: Dec 2007 Location: Cincinnati Posts: 120	I currently have a factory 4.2L crank and rods with Sealed Power H802 pistons. A cam, lifters, oil pump, double roller timing chain from Hesco. I have yella terra roller rockers. I did the head porting and polishing, a custom S&B reusable cone filter, Banks header and custom exhaust through a Spintech muffler. It sounds BAD, and people will often ask what motor is in it and dont believe its an inline 6. Also they wont step out in front of me when I am driving along, and even hesatate when they have the walk sign in the crosswalk I have built 3 motors for my truck, first motor blowing up to parts failing from Crane Cams. Second motor same thing, distributer gear in the cam went soft and shavings ruined all the bearings. I am still on my 3rd motor built from Hesco parts. I would not built a Jeep motor with out the cam, lifters, valve springs, oil pump, and timing chain from them. Oil these days is not as it was a few years ago and the lack of additives makes inferior parts fail super fast. So my advice for building your motor is to: balance the rotating assembly including flywheel/flexplate buy all valvetrain components and oil pump from Hesco *injectors from FMS and adj MAP sensor That will get you a very good motor for not that much money. If I had to do it over again I would get custom pistons and use 4.0L rods for a better rod angle and a stand along ECU like Accel DFI or Megasquirt. Good luck, cause any combo of above parts will blow up axle parts, ask me how I know __________________ 91 MJ Under construction