Forum Discussion
26 Replies
- kohldadExplorer III
Setting the caster is easy. Just get a digital level; something like below for $40. Set the axle up up on jack stands level. You can check the caster off the top the top ball joint. You can easily get within .1 to .2 degrees and that is good enough for a jeep. There is no camber adjustment and you can measure and set toe-in with a tape measure.
My advice too. Don't think it applies to your axle, but if you have a nut on top, just set a socket on it to provide a flat surface for the level. Have guys locally that do axle resizing all the time.
Regarding the PCM issue, suggest you join CJ-8.com and pose the question over there. Bunch of friendly guys which can at least point you in the right direction.
Other option, but be prepared for rougher language is pirate4x4.com. Larger crowd though. Just make sure you have the engine size/source along with PCM number.
Now, if you want to leave the jeep someplace safe while awaiting parts, my daughter is just east of Knoxville and may be willing to let you park it over there. Her father-in-law may also be able to help you out with contact for someone on the PCM issue. All I would need to know is where the engine and PCM number (located on the PCM).
However, it sounds more like a grounding issue with the PCM. Like maybe a wire getting pinched or coming into contact with the manifold when the body is getting twisted. - btggraphixExplorerPs I think the hard is getting the tube rotated the exact right amount before welding, isn't it? That may not be "castor" but I think was part of the concern...
- btggraphixExplorerJeep is a 2000. The thing is, home is now our Lance 1191 and where we park it, so not really wanting to go back to CO to work on it anyway....we have renters (though space to park). We were planning on returning to CO in about 3.5 weeks but now thinking of saving the fuel money and time by flying home for the necessary appointments and such and saving all that fuel money and using it for food money (and Jeep money now too.). Frankly other than not having space and location to work this myself as much as is feasible, here is probably as good as anywhere to try to solve things. U-joint said they could likely get it close but didn't think a good long term solution. However, they aren't Jeep guys so maybe they don't realize "perfect" is not as necessary with a Jeep as maybe it is with 1ton van axles. This is good information and might provide more options.
Thanks! - BradWExplorer IIMy D30 is the original axle that came under our 1998 TJ, so it is a low pinion, not a high pinion. You would not want to go back to a low pinion D30.
I looked at 3 options for changing out my front axle:
1) HP 30 out of an XJ w/added axle tube liners (stronger R&P, but limited to 4.88 gears) also direct bolt-in and least expensive and probably easiest and quickest.
2) HP 44 out of an old Scout (lots of axle mods required including all the TJ bracketry)
3) Dynatrac HP 44 w/RCV axles(strongest, should have been quick, can get 5.13 gears) most expensive
I went with the Dynatrac 44, but I probably should have just done the XJ HP30 swap.
When I looked for XJ D30’s at semi-local pick and pull salvage yards, the axles went not expensive. They were in the $150 to $225 range. But, as you said, lots of labor swaping all your stuff over.
Setting the caster is easy. Just get a digital level; something like below for $40. Set the axle up up on jack stands level. You can check the caster off the top the top ball joint. You can easily get within .1 to .2 degrees and that is good enough for a jeep. There is no camber adjustment and you can measure and set toe-in with a tape measure.
With that 5x5.5 conversion, couldn’t you just get the tube close to right, weld it in, pull the drive shaft, both axle shafts (or just unlock the hubs) and just run around in 2wd until you get back home?
What year is your jeep?
Brad - btggraphixExplorerWow! Amazing sort of coincidence..... I knew there was a reason why I had committed so much time over the years to this forum. The knowledge and helpfulness around here is amazing. I should be careful not to steal the thread or I might get the moderators and OP upset. Wait a minute... ;)
I'm glad to hear the good comments about Clemson4x4. They were recommended to me by the local company that is helping us determine a fix as a potential place to get the expertise for the....let's say "root" of the problem. The fix to the "break" is our first focus.
Ummm, do you still have the assembly or did you already use it to fund your project? Knowing your thoroughness I expect it is signed sealed delivered to some other enthusiast...
OK, here's the story:
As some of you know, we ended up buying Don Curley's old Jeep from his wife last fall. We are honored to own it; it's like having a piece of Don to remember him by and I swear he talks to me once in awhile through "Frankenwrangler" as my local mechanic dubbed it when he saw just how modified and unique the thing is. But, we are Jeep newbies and are still learning about it, very slowly (we've put more miles on it towing it than anything else I think.) I have a fair amount of experience with Scouts from back in the day and still have enough parts at home to put together to build a running Scout (I think anyway) including a few Dana 44 housings that are more or less complete back in Colorado.
The main and seemingly benign issue that I know Don was working on was an idle surge. It causes a P0171 (right bank engine lean condition) code that was a constant thing but ONLY at idle. With any throttle at all it goes away. I guess what happens is the PCM keeps adjusting the mixture....+5, +10, +20 and finally it throws the code. The rich mixture causes the idle surge. I had it thoroughly checked out by a very good mechanic in Denver after we bought it and he is convinced it is a PCM/Computer programming issue between the Dodge Magnum 5.9L engine and the program used to flash it to adapt it to usage in the Jeep. But he is not an aftermarket guy or programmer and suggested I needed to get with someone with that expertise. Short story is Don planned on using a PCM from a Dodge Dakota R/T 2WD (sort of the hot rod Durango that had the V8) but it expects to have the Central Timing circuits tied into all the anti-theft stuff which the Jeep doesn't have. Apparently rather than use that they ended up using one from a plain Jane pickup that had that engine but none of the extra stuff and programmed it from there. Why tell you about this first? Read on.
To explain the situation I guess I'll go through the story with the issue from the beginning. First off, I can't remember the R&P gearing in it, but indeed the axle is built-to-the-hilt. It was the super-sized brake kit, on a manual hub 5 on 5.5 conversion, with Curry axle shafts, ARB lockers, new heavy duty perches, Rubicon Express shocks etc. So much I'd have to go back to my old Canyonlands TR where Don listed everything on the Jeep.
It IS a high-pinion Dana 30 from an old XJ; I was a little surprised Don hadn't gone with a Dana 44 as I remember that being a standard swap for Jeepers; In fact, I sold one of my D44's from a Scout to a Jeeper at one point. Glad to hear you (Brad) had one for so long and it wasn't a bad choice Don made.
Last winter, in testing out the systems and air lockers and to see how it would do in deep snow (though I had dinky studded snow tires on that we used that winter for emissions purposes and for 4 months worth of commuting.) I had giant snowboots on while I was doing it, and had both axles locked in....I was backing up and suddenly was going faster than I wanted and headed for a tree. I stood on the brakes....and heard the engine rev, but the brakes were clamped....pop! Clunk clunk clunk....... I had busted the R&P. I believed I had accidentally hit both the brake and the gas with my giant boots. My mechanic told me the R&P was already worn and not to beat myself up; he thought it was pretty worn and was ready to go anyway. So we replaced it; the big challenge he had was not only are they reverse cut gears and the company that made the originals was out of business, but the oversized axles had a different diameter and for an already rare axle, he couldn't find seals that fit and reused the originals.
We are at that point spending money on a Jeep with didn't financially plan for (there were a few other issues as well) but the short story is we blew off the PCM issue because it was only a nuisance and literally only occurred during idle. Leave it for later when I have the time to research, right....
Now fast forward to the Overland Expo. My wife has taken it with the trainers on the course in Flagstaff, and now here in Asheville. It is technically her Jeep and she has no 4WD experience. "Get outfitted, Get Trained, Get going" right? So she is on the course here, with a Land Rover Camel Trophy trainer getting ready to climb over a log. He gets her angled and one wheel over the log, and is climbing back in, when the Jeep suddenly surges forward.....she's standing on the brake yet it is lurching forward and much to her credit, she stayed calm, and threw it into park. Running over a trainer on the course would be bad. He rightfully gave her credit for remaining calm (though it hit her after the fact a bit like a car wreck) and did about her only option which was to throw it in park. So what gave THIS time with a new fresh R&P in it? It broke the spot weld and rotated the axle tube in the housing. They didn't realize it had broken, and it was a real challenge to drive it back to the campsite (no surprise there, it rotated a long ways, maybe 30 degrees? Maybe more.
So if you haven't figured out what the root cause is by now.....it is clearly the idle surge, combined with super duper low gearing (Rubicon 4:1 T-case, big gears, HUGE engine, beefy driveline, and giant strong brakes...something has to give. This time it was the tube.
At least breaking like this at the Overland Expo is like breaking your arm at a hospital.....no better place to do it. 20 feet away from the Lance vendor site where I was camped, was a 4x4 Van conversion company, with a shop less than 3 miles away. Nothing but good comments about this local company, called U-Joint Offroad. They are not Jeep experts, but very very capable. I got a U-Haul dolly on Monday and towed it to their shop, and the owner Chris began doing some research. The main difficulty for them, is they are not equipped to align the castor between the two sides before welding. They send that out to the only guy in the area they trust to do that, but he is out a few weeks after back surgery and can't do it anytime soon, but possibly a bit later.
Here's the three options I see doing.
1) We have U-joint remove EVERYTHING from the axle, and we send it to their guy, and leave it for....a long time and we get it back a few months from now when we are (sort of) in the area on our way to Florida. It looks like the housing dude will be willing to take it on if time is not an issue. All of our parts are reused (unless the shock, shock spring, or tie rod were damaged and maybe seals etc.) but tons of labor.
2) Buy a used/junkyard/etc high pinion Dana 30 (prices are high...first glance in the area we are talking $1000-$1500, extract all my parts and reuse them, weld new perches, drill the pumpkin for the ARB etc. etc. Tons of labor, but also a jump in parts prices and additional labor.
3) Do a D44 conversion, and end up using a more or less stock pile of parts plus likely a new R&P depending on gear ratios, new driveshaft, condition of the D44 etc.) Again tons of labor, (more probably considering perches, etc. etc.) and probably a lot of cost in the conversion, and no longer having the ARB either. This is likely the biggest cost option, but might be the better long-term upgrade.
Keep in mind we are not hard-core 4x4'ers and don't expect to really need this incredible Jeep for what we plan to do with it, didn't really have the money to buy it, and don't really have the financial reserves to just spend the money and move on. We could recoup some cost by parting out or selling the D30 we have.
I expect we'll go route one. It seems the cheapest, gets us back to where we were, and we have the ability to leave it here and come back later for pickup. By having that leeway of time, we can hopefully get the other two sides of that old triangle of "get it done well, get it done quickly, get it done cheaply.....chose any two of the three." This still depends on U-joint taking their part on, and their frame/rack/align guy being willing to take it on as well. We'll likely find that out today.
Hence my, "Hey Brad, you don't happen to have a HP D30 laying around and can you bring it to Asheville?" comment. Did you sell it yet?
My question about Clemson 4x4 was both due to a possibility that if this falls through I need to go somewhere else as well as solve the actual ROOT of the problem, the programming between the PCM and the big V8 engine. If we go for option 1, I still have to drop money and get expertise to solve the programming issue. Clemson is the place that U-Joint mentioned as a possibility for solving that. They also know a writer for JP magazine and other hard-core Jeeping mags that has or had at least one or more Dodge Magnum v-8's in older TJs, so that is another source of info though not actual "work" on the issue.
Thanks for any thoughts you guys have on my options. Definitely not a part of our plans, but things happen. I really hope to get it all worked out and keep this Jeep a long long time.....but we are on a very tight budget. I intend on writing a thread regarding our recents changes and the implementation of our long long term goals we set for ourselves many years ago, but, I have Frankenwrangler to get back to life right now so this post is more important.
Best to everyone, and thanks guys. I guess we need to do some BRP sightseeing and I'm also grateful for some of the ideas shown above on things to see and do. There is clearly a ton here. If our big truck breaks down, we'll be down to bicycles and/or our feet!
BT - BradWExplorer III definitely know where the Shining Rock Wilderness parking lot is. Got to spend about half a day there waiting on a midget wrecker to show up and haul our truck/camper down the mtn to the Brevard Ford dealer. I know the one rock to stand on were my pos Verizon phone will work. If you have a jeep, the 4wd road past the parking lot is open this time of year. It follows the old railroad grade a couple of miles around to a gap (forget the name). Lots of blue berry bushes there and makes for a shorter walk to the Shinning Rocks.
I think our Blueridge PKWY trip is falling through. I have to get my Jeep put back together. Its been took apart since 16 August. I had my axle swap all planned out to be finished by 15 Sept, but Dynatrac sent me the wrong axle and that set me back almost a month. They readily admitted it was their mistake and they quickly addressed the problem and sent me the correct axle on their nickel, but it still caused a major delay.
We still may get to go for a couple or three days, but we aren’t making any reservations. We had planned on staying 2 days at Bear Den CG and 2 days at Mt Pisgah CG and 1 day at Cherokee. - kohldadExplorer IIIbtggraphix, I'll also give a good cal for Clemson 4 Wheel center. They were in business back in 82 when I started Clemson. Bought parts from them and know of folks who've had work done there over the years. Some folks say they are on the expensive side but they agree the work is worth the price.
Brad, you are going up there between my two trips. Think you will be a bit late for fall colors as they seem to be coming early this year. May do good near the Smokies though.
If up there during the week, don't forget to spend a night at Shining Rock Wilderness parking lot. I know you know where it is. :)
Have a good and safe trip. - BradWExplorer IIBelieve it or not, I just pulled the original Dana 30 / ARB / 4.56 gears out from under our 98 TJ and replaced it with a Dynatrac Pro Rock 44 / ARB / 5.13 gears. I'm in the middle of re-gearing my rear D44 now.
What happened to your D30? Bent tube? Are you taking it here: http://www.clemson4wheel.com/
If you have to replace the D30 housing, I would consider a high pinion D30 housing out of an XJ.
I've never heard anything bad about Clemson 4 Wheel Center. I've run into them at Jeep events in the south and also All-4-Funs in Colorado. They always seems like first class folks. They have been in business for a very long time.
I could recommend a couple of other places, but they would be in Birmingham, Al, Chattanooga, Tn and Murfreesboro, Tn.
Brad - btggraphixExplorerSome good ideas here. I'm within a few miles of the BRP right now. Having a Jeep issue to boot and was just thinking about you Brad. I'm considering some various options for our new-to-us Jeep and one referral I heard was in Clemson SC and saw a "flat rock" town in another state than yours while I was looking at maps....) You happen to have a spare high-pinion Dana 30 housing and can you fit it in your TC and bring it along? Bring a pickle fork too....
We'll be gone by the time you get here; would have been fun to catch a campfire with you. - TerryallanExplorer II
RoyB wrote:
Always enjoy the fall colors along the Blue Ridge Parkway.
We have tent camped along the parkway many times years past and more recently been visiting the same camp grounds with our OFF-ROAD POPUP setup.. The southern end of the parkway in the NC areas are great...
Roy Ken
If you liked the Southern end. You should try it in the NC High Country. From Linville to Boone. We have found that the Southern end of the PKW, around Ashville, is not as pretty as it is around Bonne, Linville, and Glendale Springs. I believe it has a lot to do with the temperature. It is so much cooler there than farther South. The leaves seem more vibrant because of it.
And for a real treat. Stop at Julian Price Lake. Rent a canoe, and go out look up. It is like being at the bottom of a leaf bowl.
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