Recent content by davidlepsch

im got a 98 xj and just bought a 99 4.0 motor and was wondeirng what type of gains i would see from putting the the 99 intake on my 98 xj. I do have a 62.5 t.b., firepower igintion kit, intake, exhast, edge trail jammer module too. any thoughts would be helpfull. and i plan on making the 99...

not to be too off topic but i ended up getting a edge products module from the trail jammer kit for a 62mm t.b., have a custom intake, and a 62.5mm t.b. I havent taken my spark plugs out yet to see waht color they are but what does the programmer exactly do besides just lie to the computer? and...

ok so i think im going to use 87-90 crankshaft, the 4.2 rods, 4.0 bearings, .020 pistons, new rings and all arp bolts. What kind of power numbers would i be looking at and what about motor longevity and mopar h.d. oil pumps or hi vol. pumps?

what year 4.2 crank, 4.2 connecting rods, bearings, .020 pistons, head gasket, new bolts? should i use? and is there any other modifications needed to put this all together or is it just direct bolt in/ons ? Should I do anything to the head thats cheap enough while its off too, besides clean it...

Ok then the motor has 164k on it and i could bore it out .030" im looking to run probably some 91 octane pump gas. I'm going to go with the 4.2 rods. I'm trying to make it a daily driver if at all possilble and it will be going in a 98 xj with mods listed above, so its going to be in obd2 w/ the...

Ok then the motor has 164k on it and i could bore it out .030" im looking to run probably some 91 octane pump gas. I'm going to go with the 4.2 rods. I'm trying to make it a daily driver if at all possilble and it will be going in a 98 xj with mods listed above, so its going to be in obd2 w/ the...

i just bought a 99 4.0 motor that i plan on putting a 258 crank and rods into. I already have a full ignition kit, 62.5mm t.b., cat back exhaust, intake. I want to run pump gas and make this motor with as little money as possible. Is it possible to get a good crank out of a 258 with...