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1041975 get a 4.0 head that will give you 40 to 60 hp alone! how much do you want to spend? find a used 4.0 EFI motor and put it in.[addsig]

1041994 there"s a restrictor in the air intake nozzle. pull that pice out, it looks like an hour glass. i heard they put it in cause the engine had too much power. [addsig]

1042153 auto parts store like auto zone does have a primer spray paint for rubber, use that. read the instructions and get a good quality paint for the final coat. [addsig]

1042261 tow the dam thing to a jeep dealer before you kill someone! [addsig]

1042431 you could put a kill switch on the pos wire of the coil. untill you find the real problem.[addsig]

1042948 sounds like your belt is not tight enough. also after your engine gets really hot turn it off and see if the fan blade moves if it does you have a bad fan clutch. [addsig]

1042949 sounds like your starter or solenoid is going bad. you can pull it and have an auto shop check it on the bench. the older a car gets the more and more other items start to wear out. battery connections, cables, relays and switches. check and make sure everything is tight and clean.[addsig]

1043387 their"s special paint for that. i got a can of it from auto zone. check them or an auto supply store in your area. [addsig]

1043704 that sensor measures and tells the computer how lean or rich to make the fuel mixture. you need to find a spot in the exhause to put it. some place close to where it was. [addsig]

90000 I just came across a pretty good deal. Atleast I thought it was. I traded a chevy 400 small block for two CJ7's. One is road worthy and the other is for parts. My questions are: (1)the parts jeep has a 4 cyl and a 4-speed trans, while the good one has a 6 cyl and a 3-speed trans...

125000 I am not sure if I heard this right but the other day on TRUCKS they put a 4.0 head on 4.2. Did I hear the guy right or did I miss something? If thats the case I have a 4.0 motor from a 93 cherokee. Is there anything that has to be done to the head first.

1040085 i have a 90 4.2 motor, and i'm thinking of overhauling it. has anyone overhaul the motor while it was still in the jeep? any problems in doing it this way? bob [addsig]

1040355 can anyone help me. i hear a rattle when i start up , for few seconds when it's cold. also when i'm at very low speed 5mph light load, thier's this rattle comming from the engine. i have 145,000 miles on it, could it be my bearings? the jeep had been in storage for 3 years with the same...

1041262 I have a chance to get a 4.0 cylinder head. does anybody know of the alternations needed in order to put it on a 91 4.2 motor?[addsig]

1042193 i have a 258 cubic engine 90 yj with 145,000 miles on it . Is their an easy way to bost the oil pressure? reads about 25 psi 30 weight motor oil when hot.[addsig]