JOMJ87 Posted August 19, 2007 Posted August 19, 2007 OK i have a few more questions for you guys about my inprogress motor swap. I am looking for a clutch kit on the cheap if anyone knows a good place to find one. I have seen them for 130 or so but thats the cheapest. BUT here is my question::: I have heard you can't turn the flywheel on a Jeep because it is concave or something like that? Is this true cause i will need it to be turned when i replace the clutch? Its a 2.5 out of a 91 YJ. Also My other unanswered questions is will a 4.0 fuel pump (just the pump) bolt on to my assembly in my 2.5 TBI MJ. They are the same part numbers and the 4.0 pump is the same as the 2.5 MPI so i was going to swap it in to my tank. Last one is Does anyone have a easy and simple to read wiring diagram of the 1987 2.5 TBI MJ from under the hood and dash for the engine controls and all. If you have one that shows location of the wires on the firewall junction block and where they are located and what they run on that block that would be AWESOME since that is my main point of where most changes need to be made. I am having to join the 2.5 MPI one in to my existing system and want to be able to cut and splice what needs to be or even move there location on the junction block. Thanks guys Cole
jeepthing07 Posted August 19, 2007 Posted August 19, 2007 It says right in my FSM for 1994 XJ/YJ's "Flywheel machining is NOT recomended. The Flywheel surface is manufactured with a unique conture that would be negated by machining" I now have problems with my clutch not releasing fully after having it machined. I had it ballanced to so thats not the problem.
JOMJ87 Posted August 19, 2007 Author Posted August 19, 2007 I thought i had seen it metioned but i couldnt find the post. But i will admit i dint search long. So do i replace it or call it good and see how it does? Well thats one question down now the other 3.... Cole
jeepthing07 Posted August 19, 2007 Posted August 19, 2007 I also have a Centerforce stage 1 clutch to so that might be part of the problem with mine. Some people have had them machined and never had a problem but they were probably running cheap after market replacments that don't grip as well as CF hell i don't know its a jeep thing no one knows.
JOMJ87 Posted August 19, 2007 Author Posted August 19, 2007 Yeah i have heard both but i have heard of a few that had issues and i don't want issues cause as you can see i am already going over my head in wiring and stuff plus the engine is on the floor of my carport covered up so i want to put a clutch in it before it goes in. Another question: Now don't forget about the original ?s but I am also wanting to do some sort of power steering upgrade so that my 35s and steering are happier on and off road. Does anyone have any info on this for a MJ??? Again please don't forget about the original ?s I really need them answered first. Cole
rockhardzj Posted August 19, 2007 Posted August 19, 2007 The YJ had an nv4500 swap a few years ago by the PO. I know all the details, and he had the flywheel machined, has no problems. clutch fully disengages, and engages fully as well, no problems.
rockhardzj Posted August 19, 2007 Posted August 19, 2007 I am also wanting to do some sort of power steering upgrade so that my 35s and steering are happier on and off road. Does anyone have any info on this for a MJ??? Cole I'll know more on steering stuff in a little bit. I'm thinking about what to do about steering linkage as the 2wd stuff is just weak looking, and the ends need replacement anyways. I've been discussing it with my buddy who runs a offroad shop, he's given me some ideas so far, but we're going to try to narrow it down tho what will be the most beneficial, and strongest for offroad and on road use. It will probably end up being mostly custom built stuff though.
JOMJ87 Posted August 19, 2007 Author Posted August 19, 2007 MY main need is going to be a pump upgrade or a lower ratio gear box so it is easier to turn and is a little more powerful. I have seen alot of aftermarket pumps that are like this but i wanted to see if there is any experiance with any particlar setup. I have an idea as far as linkage which i think i am doing the flip trick to put it on top so it lines up better with the trackbar i have. Thanks for the answers so far I guess its a toss up on the flywheel so far. Cole
Pete M Posted August 19, 2007 Posted August 19, 2007 Someday I'll be swapping in a Dodge Durango steering box. The piston is said to be larger than our stock one.
JOMJ87 Posted August 19, 2007 Author Posted August 19, 2007 Someday I'll be swapping in a Dodge Durango steering box. The piston is said to be larger than our stock one. And its a direct bolt in?? I think i know of 3 in the JY so i might consider that. Cole
Pete M Posted August 19, 2007 Posted August 19, 2007 If I remember right, you need the box from a 4wd 98-99 Durango. http://www.naxja.org/forum/showthread.php?t=71626
JOMJ87 Posted August 20, 2007 Author Posted August 20, 2007 Thanks Pete. Cm'on guys i know someone can help me with my other questions.... Cole
FxRacing282 Posted August 20, 2007 Posted August 20, 2007 well the fuel pumps may have different output PSI so id double check maybe check a few different years for the 4.0 pump. could just check the part no. on the website.
JOMJ87 Posted August 20, 2007 Author Posted August 20, 2007 Well the 4.0 one ahs the PSI output i need i just was wondering if it would bolt to my assembly in my MJ without much issue. Cole
FxRacing282 Posted August 20, 2007 Posted August 20, 2007 http://www2.partstrain.com/products/Eng ... D-002.html well just cause i don't want to do laundry i checked out fuel pumps on partstrain.com and found out that the pump for an 87 2.5l is the same pump for an 87 4.0 so here's the pump that you need. http://www2.partstrain.com/products/Eng ... ml?index=4
FxRacing282 Posted August 20, 2007 Posted August 20, 2007 and for your diagram try the new napa? catalog online it should be halfway decent. maybe go to the store and see if they will print you a diagram...
JOMJ87 Posted August 20, 2007 Author Posted August 20, 2007 Thanks I had found the pumps on Advance auto online bvut the issue is my truck is a 2.5L MPI which has a lower fuel pressure. The listed the same pump for all the way up to 94 on the YJ as they did for a 85-91 MJ but that can't be right. Its confusing but i think i will just pull them both and check them out after that. I will check Napa and see. I have access on to Mitchell on demand but the diagrams arent to good. I would like to have one from a 91 YJ to. The main spot i need is that junction block and what each wire is on it. so i know what needs to be moved and where to if anything. I am hoping the cluster will still work but i need the diagram to see and plus i got to seperate the headlight wiring from the main harness. Hopefully someone will have something to help me out cause i hate going in blind and its worse being wire harness junk. Cole
FxRacing282 Posted August 20, 2007 Posted August 20, 2007 weird well check the junkyard and find a pump off of a 4.0 and see if its the same as the one you got. (assuming you have 2 or more vehickles) well time for bed, deer season is coming up and i gots to find em early
JOMJ87 Posted August 21, 2007 Author Posted August 21, 2007 Anyone able to help with the original questions. Still looking for answers. Thanks guys Cole
JOMJ87 Posted August 28, 2007 Author Posted August 28, 2007 Anyone with a FSM can you see if there is a diagram of the junction block on the drivers side of the fire wall. Is the junction for the harness to run to the fuse block. Thanks Cole
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