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Everything posted by DirtyComanche
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Good to know, I didn't make an account since my browser autofills everything.
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Stroker NO Start now
DirtyComanche replied to dragordie's topic in MJ Tech: Modification and Repairs
What Eagle said. As you've described it, you're setting it up for TDC on the exhaust stroke. -
Win7 should allow for each of them to be set to a different resolution.
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Even on the best resolution settings that the TV supports, it might be less than ideal picture quality. It depends what you're planning to do with it. Given you have it on hand, I'd try it out. If you don't like it you're just out some time and maybe having to buy a cable.
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Nused XJ and weird mirrors
DirtyComanche replied to shelbyluvv's topic in Member Projects: Other Cool Stuff
It can get disgustingly cold overnight in many deserts. It might actually be useful. And rich Arabs like features. :thumbsup: -
Seats (sorry for beating a dead horse)
DirtyComanche replied to buckwheat's topic in MJ Tech: Modification and Repairs
Yeah, the factory riveted the seat brackets to the sliders/seat frame, so just drill them out and bolt the MJ brackets on. I think everything will become quite obvious once you find a set of good XJ seats to compare the brackets you have with. -
Thanks guys, I already ordered them with the first code. Probably should have waited to see if one of those worked better though. I'm sure somebody else can use a code though. :driving:
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Seats (sorry for beating a dead horse)
DirtyComanche replied to buckwheat's topic in MJ Tech: Modification and Repairs
I'm just here to say how the PO did that is really, really, really, unique. Okay, actually, the good news is that the partial piece of the seat bracket is the MJ specific bit. Or so I believe, I might be seeing it wrong. Anyways, I'm thinking you could get a regular early XJ bracket, cut it up, and graft the missing half onto it. Unless you can find the actual MJ bracket somewhere. That's also assuming there is still something on the floor to attach the bracket to, and nothing else on the floor has been modified. I would recommend welding the bracket together if you do try to piece it together with an XJ one, if you do not have the means a shop should be able to do it for very little money. -
Stroker NO Start now
DirtyComanche replied to dragordie's topic in MJ Tech: Modification and Repairs
Maybe buy a timing light from this century? :rotf: I have a sorta nice digital 'dial back' (there is no dial) that also gives me RPM, and it will do it with no issue. It instantly rules out lots of bonehead problems, and you know the spark plugs are firing without zapping yourself or anything like that. I use it for setting advance curves in flyweight and spring junk, and confirming the idle, etc. Every time I pull it out I have to wipe at least half an inch of dust off it, since I use it so much, but it's sure handy when the time comes. :thumbsup: -
Stroker NO Start now
DirtyComanche replied to dragordie's topic in MJ Tech: Modification and Repairs
As long as it's firing the spark plug, the timing light will show it... Doesn't have to run. Just have a helper turn the key, or jump the starter relay, or whatever, and you can see what your timing is while cranking. It won't show you if it's on the exhaust stroke though. -
Stroker NO Start now
DirtyComanche replied to dragordie's topic in MJ Tech: Modification and Repairs
And just how did you do that if it doesn't start? A timing light uses a magnetic pickup on the #1 plug wire to trigger the light when the #1 plug fires. Or are you using one of the old timey lights that hook up in series with the plug wire? If the #1 cylinder is on the exhaust stroke, the spark plug will fire but the engine won't. The #1 cylinder has to be at TDC on the compression stroke when the distributor is installed and oriented. Don't ask me how I know this ... I think almost everyone that spend much time messing with engines has done that at some point. -
anyone cut down coil springs?
DirtyComanche replied to 90mj88xj's topic in MJ Tech: Modification and Repairs
IMHO, you want to preserve the rake if you intend to use it as a truck. Depending what's going on, adding a full length leaf to the rear packs might be be another good option. Cutting coils is a bit hilljack to say the least, but it's like leaf springs, you can tune them providing you know what you're doing. Failing all that, tell everybody that the truck is a prerunner. -
Found one. Supposed to be 5% but it only worked out to about 3%, must have been some sort of exclusion with the stuff I have, but that's better than nothing. 896A54E1A1C600
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Anyone got a valid discount code? Gotta order some expensive calipers...
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anyone cut down coil springs?
DirtyComanche replied to 90mj88xj's topic in MJ Tech: Modification and Repairs
When you cut them down the spring rate increases. You can calculate it easily enough using one of the online calculators. If you feel the front is stiff or rides poorly now, I would not suggest cutting them down. If you cut them, mark them with a sharpie, wrap a damp rag around them just above where you intend to cut them, and use an angle grinder with a thin/ultra-thin cutoff wheel (1/16" is about ideal). You just want to avoid getting them any hotter than needed. -
Subwoofers acting up.
DirtyComanche replied to Knucklehead97's topic in MJ Tech: Modification and Repairs
That^^^^^^^^^ Nah, more likely it's just a bad connection. Make sure everything is tight, wiggle wires while trying it and see if anything produces a noticeable difference. If there's any options to safely swap channels/inputs/outputs around, do so. Measure the voltage at the amp under load to rule out issues there. Clean up any ground connections and check the integrity of them. Failing that I'd say the amp is a pile of junk; welcome to the reality of mass produced consumer electronics. -
What lift to get for my mj
DirtyComanche replied to Bubseth's topic in MJ Tech: Modification and Repairs
Leaf spring rate is mostly a function of the number of leafs, their thickness and width, and the length of the pack. More leafs, more spring rate. Thicker, more rate. Wider, more rate. Longer, less rate. Static arch does increase the rate by a small factor, although it is an exponential relationship. That is, within the realm of flat to a moderate amount of arch, say what the factory 4wd springs are, there is a very minimal increase from it. As arch is increased beyond there, the relationship starts to become more apparent. This is part of the reason why many aftermarket mondo lift springs ride poorly. Wrap/anti-wrap characteristics are a little harder to pinpoint, as they have to do with the relationship between the three mounting locations, the vehicles CG, the spring rate and configuration of the leaf pack, and about 8 billion other little things. In general springs with MORE static arch display WORSE wrap/anti-wrap characteristics, but that's a statement that really can only be applied once the arch becomes quite significant. The other part of the reason those aftermarket mondo lift springs ride poorly is they added spring rate to try to fight the wrap issues. Flat to mild arch (positive or negative) springs typically perform best for everything. But there's some give and take with that statement. If you want to go fast, have a lot of power to deal with, and are rule limited in regards to wrap control, and have no huge issues with ground clearance, often a spring under setup with more arch will perform better than a spring over setup with minimal arch. From a standpoint of what we're probably doing, and if you're looking to add that much (3"+) more arch to the spring pack, it isn't likely the case. I only have a set of factory 2wd MJ springs to measure. The spring pack is only 1.5"~ thick. Add that to your axle tube (2.75") and a bit for the perch (.75"), and you're at about 5". The 2wd springs are at least an inch lower than the 4wd ones (static arch), so that means only 4"~ of lift going from a SUA 4wd spring to a SOA 2wd spring. Obviously there is variables in play here, some axles have larger/smaller tubes, many spring perches are taller, some people add an overload, not all of the factory springs are the same, or even close, vehicle weights vary, some people can't hold a tape measure, etc. The GM springs I mentioned are from 2wd trucks and are fairly flat, but I don't have a set to compare. However, they're available with many different amounts of static arch and in different rates, and you can tune them with other flat springs (F-Junk, Wagoneer, whatever). They aren't perfectly the right length (they're missing an inch behind the center pin, which is significant), so one might have a headache using them, but I'm confident they could be made to work and made to perform well. But thanks for wishing me luck, because I intend to be playing with this setup this fall. -
What lift to get for my mj
DirtyComanche replied to Bubseth's topic in MJ Tech: Modification and Repairs
Neither of those things are particularly related to the static arch of a spring pack. -
New tank, New Fuel Pump...won't start
DirtyComanche replied to Virginia's topic in MJ Tech: Modification and Repairs
Is the pump actually running while you're cranking? If the fuel in the lines and rail was really that bad, there is a good chance that multiple injectors are plugged, and the regulator is gummed up. You could keep trying it and they may flush themselves out enough to function, or they may not. Even if you're down two cylinders it's really hard to get the engine to start. Check fuel pressure while cranking, look for it bleeding down. -
What lift to get for my mj
DirtyComanche replied to Bubseth's topic in MJ Tech: Modification and Repairs
Not if you're using springs that are effectively lowering springs. -
What lift to get for my mj
DirtyComanche replied to Bubseth's topic in MJ Tech: Modification and Repairs
Now, if you really wanted to be different, I think you could use 56" Chevy springs (73-87 2wd trucks) and install them SOA. They don't have much static arch, but are obviously a little stiffer. Also, SOA with 2wd MJ springs should only be a 3.5-4.5"~ lift on a 4wd truck. -
What lift to get for my mj
DirtyComanche replied to Bubseth's topic in MJ Tech: Modification and Repairs
That too. -
What lift to get for my mj
DirtyComanche replied to Bubseth's topic in MJ Tech: Modification and Repairs
3.5" of lift from shackles alone isn't really a great idea, IMHO. I'd get some S-10, Dakota, or other MJ springs and steal the main leaf out of them to add to the existing pack (cut the eyes off it), and then add the needed length of shackle.
