Jeep: Vacume pump and Fenders

Now that I got the trivial stuff out of the way, I went on to some still relatively easy but more drastic mods. I drilled my first hole in a metal part of the Jeep actually as part of the fender mod. It had to happen some time ;-).

I moved the vacuum pump up into the engine compartment - so I can install a winch plate (now coming in the mail). And I trimmed my fenders, for full flex once I get 33" tires on there.



It looks almost the same right? Personally, I'm quite happy with that.

I followed (approximately) this guys directions:

I'll note now that after digging through the VA codes, although a LOT of people seem to do this mod and no-one reports having problems, it looks like strictly speaking I'm not currently quite legal. Technically VA requires side-lights to be on the widest part of the permanent body of the vehicle, as high as is practical, and visible from the front. Mine are currently not visible from the front, nor are they all the way out to the side. I have some new lights I need to experiment with, but I think it'll be okay until I get around to it.

With this mod, you remove the entire inner fender from the rear of the vehicle. This exposes the body to all the rocks that get kicked up.


The easiest fix is to cover the area in spray-in bed liner. I got some duplicolor liner at an autoparts store and put on about 6 or so coats. Paint would've sort-of worked, but the rubberized coating should protect a little better against gravel dinging the metal.


All in all it's simple and cheap, and it opens up a lot more space. It's pretty silly for the little 29" tires I have right now. It's not even needed for 33", but without trimming I'd probably rub at full flex and might have to adjust bump-stops and limit my flex more. This way if I put on a high-flex (low COG) lift kit later, (meaning a high quality say 1.5" lift kit), my fenders won't be what limits my flex.

Vacuum Pump

The other project was moving the vacuum pump. The newer JKs have the vacuum pump just behind the front bumper. It's a really dumb place for it for several reasons. For example, the exhaust for the pump has to run back up and into the engine-compartment so it doesn't fill with mud. Also, it's directly in the way of basically anything you might put on the front, either a winch-plate for the factory bumper, or any aftermarket bumper. Heck, it even makes it hard to get the factory bumper *off*.

Sadly, I didn't take any pictures of it in the original position, but here it is in the new position:


I purchased an OR-fab vacuum pump relocation bracket. It comes with stupid low-quality crimp connectors. I couldn't find good ones, so instead I opted to do a modified lineman's splice and solder it. The wire is milti-fiber copper core, so it was very easy to do.


Here's what it looks like all wired up, you can see the wires running down to where the pump used to be, behind the front bumper.


Besides simply following the directions, there were 2 other things I needed to do.

First, Apparently older JKs had removable nuts on the factory vacuum pump mount... mine did not. When I went to purchase some at the local hardware store I couldn't find ones that fit, so I got a new set of bolts, nuts, washers, and lockwashers... but although they seemed like they were close enough, these didn't fit through the sleeve. I pulled the sleeves and that got everything working. That's what the first picture is from. Later I found the right nut and put it together properly, you may notice the rubber looks less "squashed" in the last photo than it does in the first.

Second, you remove about 3 feet of the vacuum hose, and the entire of the exhaust hose, but you extend the wires to the pump by 3-4 feet. The kit didn't come with any wire loom for those wires. So, I picked some up at the auto parts store. Here's what it looks like all finished up:


The new location seems better in every way. The vacuum tubes are shorter, the pump is better protected, the exhaust pipe doesn't need to exist at all. I don't know why they don't put it there in the first place. I'm pretty happy with the mod though.

More coming down the pipe. I'm not planning anything too crazy (yet), but there's a few more things I want to do that I feel like I'll really use. I was skidding logs with this vehicle, and had offroaded it, before it hit 200 miles. Given that, I decided I should spend the energy to make it nice for how I want to use it.


Trivial Jeep "mods"

Well, I got a Jeep. You don't get a Jeep so you can keep it stock. I'm starting easy.

Part of why I got a Jeep is so I would learn more about cars. The stuff here is the super-easy not-too-educational stuff, but you gotta start somewhere.

I didn't buy a hitch on my jeep when I got it. At the time I thought I'd get a bumper with one built in. Anyway, this was $55 on amazon, including wiring harness.


To mount it you just pull the bumper and bolt it on. The wiring harness (like most) is just a jumper that takes off from the plug on the left-side tail light. I've been spraying more undercoating whenever I expose a new part of the Jeep and this was no exception.


The well known mirror drain mod turns out to be unnecessary on the 2015 Wrangler. I drilled it first. Later I removed the mirror to use to look up our chimney (we didn't have any other mirror in the house, I guess I don't touch up my makeup enough). Apon inspection they've added a notch to the gasket and set it up so it seems to drain properly. It's been raining a lot and there was no water in it when I drilled it, or when I pulled it off.


Chrysler, in their infinite wisdom, didn't put drain holes in virtually anything but the main tub. I went through and added them to the plastic tray in the back:


I unplugged the doors a while ago to so it doesn't "ding" when they are open. I hate that feature in all cars, and carefully broke it in the Tacoma as well.

Lastly, I have no pictures for this, but I purchased a flash-cal. This lets you tweak the computer in a number of interesting ways. Some are only relevent to automatics, but a bunch are useful. I adjusted the front lights so I can use highbeams and fog-lights at the same time (I mean, why would you interlock those in the first place?) I tweaked the front-light timeout which for some reason applies when you turn the car off and then turn the lights off (ANNOYING!). I set it to one second so this doesn't matter. I tweaked the one-touch turn-signal, which again drove me nuts. I hate things with timeouts like that, let me flip a switch on, and then off.

Annoyingly it wouldn't let me adjust the stereo timeout. The stereo keeps playing after I turn the ACC off and then turns itself off about a minute later. I find this rather annoying. I'd much rather it just switched off instantly. Oh well. I suspect there's an update that would let me do it, but I haven't gotten the update software to run under wine yet (windows installer DLL hell).

The original impetus for purchasing the flashcal was so I could fix the TPMS and speedo when I upsize my tires (current plan is 33"). I already tweaked the TPMS so it won't complain until I'm below 20 PSI. I'd rather go on handling and watching the tires carefully than a light anyway. You may notice the tire guage in the last picture.

I've got lots more planned. I'm just doing the super-easy stuff first. I already have a kit for relocating the vacuum pump, but haven't gotten up the gumption and a couple consecutive days where I'm willing to break my daily driver.

I learned several things today:
  1. blogger's comment system is still totally hosed, after several attempts I've been unable to reply to the comment on this post. I've been intending to migrate the blog elsewhere at some point.
  2. Indeed, said comment is 100% correct for VA.  I found the regulation:
    http://leg1.state.va.us/cgi-bin/legp504.exe?000+reg+19VAC30-70-160. It's  I-11-G-1. So, I'll probably be undoing that particular mod. Thank you very much for the comment!

New trailer

I just bought a trailer.

This in and of itself isn't that interesting, but I thought it might be interesting to explain why I got a trailer, and how I selected this particular one.


(the wheel on the side is attached via bungee cord, I did that after I got home)

As Jess and I were working on how to acquire wood, we noticed that if we could move it ourselves it would be a lot cheaper. This was kind of my plan from the start. In fact, I originally considered getting a serious tow vehicle, rather than the jeep, but decided to scale it back and see if I could get away with a smaller and cheaper vehicle. I adored having a pickup truck (as you've seen from previous posts) and wasn't about to give mine up without a plan to be able to move *more* than my old pickup, not less.

As an amusing aside, I can't rent a trailer from Uhaul. They have a somewhat esoteric and odd rule that you can't rent a trailer with an soft-top SUV (soft-top cars are fine). It's kinda weird. Otherwise I might've rented once or twice before purchasing.

So, I started looking at trailers with two purposes in mind. The first is just moving "stuff". Furniture, building supplies, whatever. Basically, the stuff I've moved in the pickup in the past. The second is to move firewood, something I would not have done in the bed of our little pickup. The wait capacity of anything short of a full-sized pickup just isn't sufficient (I looked at those a while back, and they are expensive). I *could* do it in a tacoma like ours, but I'd want to reinforce the frame, probably do a different suspension than we have, and we'd still be left trashing the poor clutch on the little 4 cylinder. In short... it would be very hard on it.

Common firewood here is oak, hickory, and  locust. These are all wonderfully dense hardwoods, great for heating. That means a cord of these woods weighs ~4500 lbs, even dry. This should make it a bit more clear why I don't want to do it in the bed of a light pickup.

My jeep can pull 1 ton (including the weight of the trailer), a cord of firewood weighs ~4500 lbs. A lot of 1-1.5 ton trailers are 700 or even 1200 lbs. That would only leave 800 to 1300 lbs of actual wood I could haul in a trip. It would take me 4-6 loads to move a cord of wood!

Given that I was looking for the lightest trailer I could. I'm not going to weigh the wood before I load it - just estimate, so something that won't fail if I accidentally overload it a bit is also important. With my vehicle it's clearly weight that limits how much wood I can haul, not the size of the trailer. For the other purposes I wanted between 4x6 and 5x8 (pickup truck size), just so it's easy to deal with and weighs less. As it happened the trailer place had 4x8 in stock... works for me!

My new trailer has steel wheels and plastic fenders.


The suspension is something I haven't seen before, a swinging-arm system sprung at the axle. The salesman said the axle is rated to 3000 lbs, thus meeting my "can handle mild overload" requirement.


It's also got a wooden deck and sides and aluminum frame. The sides are held on with funky rubber things to reduce rattle I guess. It seems to work, the trailer is surprisingly quiet (well, as judged when pulled behind a soft-top jeep :P).


It's ~300 lbs empty and just over a 1 ton GVWR. That's perfect to maximize what I can move with the Jeep. As a bonus, being aluminum, the trailer shouldn't rust. I considered getting something rated a touch higher, but it didn't seem worth the cost and would've reduced my practical load capacity anyway.

It's known that the wrangler's real tow limitation is it's short wheelbase and weight. It just gets squirrely pulling a large load. The engine is absolutely no problem and it doesn't stress the vehicle much at all, the 4 door version with the same engine can do 3500 lbs, and it's limit is still for the same reason. That means pushing near the tow limit shouldn't hurt my car at all. I should note that I expect my wood hauling to be short distances on surface roads, so pushing the squirrely factor hopefully won't a big deal. For other uses it'll be way below capacity anyway, so should be very safe.

My hope is that I can load a bit in the jeep as well as the trailer, and it should actually make the whole thing safer. So with a bit of the wood in the jeep I should be able to haul a thin 1/2 cord of hardwood, or a generous 1/2 cord of softwood. The previous tenent in the house I'm in now burned ~3 cords a winter, so that would be 6 loads. It's a fair number of trips, but sane... unlike say 12 or 18 trips.

That's all the theory... it pulled great on the way home (2.5 hours on the freeway). Once nice feature is being only a 4 foot wide bed the wheels land entirely inside the jeep's wheels. I didn't measure, but it felt like the wheels tracked maybe 2" inside the jeep's wheels on any reasonable turn. That makes pulling the trailer much less scary.

The one thing I don't like about it is the giant sail of a rear gate. I got >22mpg on the way up to PA, and about 15mpg on the way back... ouch. To be fair I think I had a tail-wind one way and a head-wind the other, but still. Oh well, I didn't buy it for high-gas-milage, I got it for doing things I can't do without it.

I'm not sure if I'll actually use the trailer to haul wood this year, we'll see, but now I have it so we have the option. I'm sure it will get use hauling all sorts of other things though, and this way I won't have to borrow Jess' truck all the time.