0
Go with a Weber or EMPI. I went with a EMPI($100 cheaper) and it made all the difference in the world. If you want to spend even more go with a TBI(throttle body injection) kit.
I recommend a Ford Motorcraft 2100 carb wit adapter plate. There are a number of responses to internet searches for "258 MC2100" that will guide you along, as well as a eBay vendor who sells an entire kit that is well recommended. It is comparable in the power upgrade you see in a Weber, but requires much less adjustment and less mechanic-rade knowledge to get tuned. The original carb is notorious for being problematic, especially this many years later, even when rebuilt.
NOTE: check local laws for modifying original equipment. Even upgrades that are better for the environment may not pass inspection if not stock OEM parts.
What else can I help you with?
Is a 1986 jeep 258 engine compatible with a 1987 jeep 258?
SHOULD BE, BUT YOU CAN CHECK YOUR LOCAL JUNK YARD FOR VEHICLES TO ASK THEM IF THEY INTERCHANGE, I AM SURE THEY WILL.
Can you swap a 4liter engine into a jeep cj with a 258?
Both the 258 and the 4.0 are the same size externally.
What vehicles come with 258 engine?
I remember the mid 70's Jeep had a 6 cylinder 258
What is the stock engine in a 1978 Jeep CJ7?
Should be the 258 cid I6
What is the spark firing order for a Jeep YJ 4.2L 258 replacement engine?
1-5-3-6-2-4 rotor turns clockwise.
What does the block casting number 3218618 mean?
Jeep 258 engine block casting number.
How can you tell if an older jeep six is a 258 or a 232?
To determine if an older Jeep six-cylinder engine is a 258 or a 232, check the engine's displacement. The 258 has a bore of 3.75 inches and a stroke of 3.88 inches, while the 232 has a bore of 3.63 inches and a stroke of 3.88 inches. You can also look for the engine identification number, typically located on the block, which will provide specific details about the engine type. Additionally, the 258 engine is generally found in later models, so the vehicle's year can also be a helpful clue.
What is 87 jeep wrangler 4.2l 258 ci?
4.2 + engine size in liters and ci = it in cubic inches. Craig
What is the spark firing order for a Jeep YJ 4.2L - 258 replacement engine?
for all 258 CID engines the firing order is 1-5-3-6-2-4. Cylinder one is the front by the radiator and on the distibutor cap, plug one wire should go to the socket closest to the passenger fender, then the rotation is clockwise as viewed from the top.
Location of 1984 Jeep CJ7 fuel pump?
if it is a 258 six cylinder go to passenger side of motor and it should be bolted to the side of the engine block just below the distributor follow the fuel line to the carburetor to make sure [Actually, I have an 84 with a 258 and mine is located to the right of my distributor... my oil filter is below my distributor; but, as was said above, go to your carb. and follow the fuel line when in doubt.]
What are the torque specs on the rocker arm bolts on a jeep 1984 cj7 with a 258 8 cylinder engine?
The 1984 258 cubic inch engine rocker arm bolt torque specification is 30 pounds. You should torque the rocker arm bolts in 15 pound intervals.
What causes a 1983 jeep cj5 258 engine with carter bbd carb to start and then quit?
the carter carb, they suck. get a weber. you'll thank me later.
