a lot of extra power from a 258CI inline six CJ7

The cover is starting to wear around the cap, I figure that's where the sh$t is hitting the fan

I have gone through a couple caps since I have owned mine. They are available under the 'Help' brand as a generic oil filler cap for less than five bucks. These are identical to the OEM ones like the tail lights are identical to generic trailer tail light boxes. AMC wasn't called 'All Makes Covered' for nothing.....

Mike

Pi-eyed Piper wrote:

L.W. ("ßill") Hughes III did pass the time by typing:

Not to mention what happens when you stuff more air in. :)

But who needs smog legal in Oklahoma. :) Actually it is smog legal but not CARB legal. But who needs CARB legal in Oklahoma. :)

cap seems ok, it's the cover thats cracking a little bit

Mike, how would you kill the computer with MPFI and the jeep still runs and was this in your mind when you wrote that below?

bill

Mike,

What's your gear ratio with those 33s? I know I can't bark my tires with MPFI, 258 with 4.0 head but I'm running stock gears.

Bill

The 82 to 86 258 and the YJ's with the 258 all have a poor Ford attempt at an emissions computer in them running the carb and the spark timing.

This computer acts like an old fashioned governor and limits the rpm to slightly over 3000 before it clamps down and the engine won't rev higher.

By modifying any part of the ignition or carb, this emissions computer either gets removed or put to sleep or you get really s***ty performance because it goes into 'limp home' mode.

Adding FI kills the sucker and you get a FI computer with it's inherent poor(er) gas mileage. The carb well tuned gets about 5 mpg better mileage than the FI systems from what I have observed.

Mike

William Oliveri wrote:

I have 3.31's and she will just howl if I am too heavy on the pedal.

Mike

William Oliveri wrote:

Really? That's pretty close to stock isn't it?

improvements

Sounds like I should trash my MPFI for a carb :-)

improvements

Exactly stock for my CJ7's D44. A lot of them came with 3.31's.

Mike

William Oliveri wrote:

The only good thing about the FI is you can ignore tune ups longer. The carb isn't quite so forgiving... ;-)

Mike

William Oliveri wrote: