Author Archive: wae
After a little searching and trimming, I was able to fashion a section of the aforementioned PT Cruiser silicone charge piping to run between the intercooler and the throttle body. I got the IAT sensor installed in it and the fit is pretty nice. There’s going to be a much cleaner look in there now with a little more room.
The rest of my time was spent working on the throttle cable bracket. After spending about 45 minutes cleaning out a space to work, I got this grafted together:
It took a little adjustment with my 5 pound sledge, but I put a nice bend in it and the throttle travel seems to be about perfect.
I put a couple coats of paint on one side tonight and I’ll do the other side tomorrow. It doesn’t really need to be SUPER pretty, but I want it to look a little bit nice!
I checked out the closing RadioShack near me and they had a few things that are nice to keep on the shelf, but they lacked any 2N2222A transistors that I need for the tach output circuit. I ordered a hundred of them from eBay (because it was way cheaper to order 100 than 1…) so when that gets in it will be time to open up the MegaSquirt again and add the tach output, fan control, IAC control, and knock input.
Setting the fans aside for the time being, I went ahead and lengthened the TPS wiring and the IAT wiring (almost. I ran out of butt connectors with one splice left to go) and get that taped up along with the IAC wire. It makes a nice little branch of the harness and I’m pretty pleased with how the wiring is shaping up.
The Stratus throttle cable isn’t just a little bit longer — it’s nearly twice as long as the 1gn Neon cable. Getting it through the firewall was a bit difficult because the grommet is significantly larger as well. Shaving down the rubber allowed it to fit snugly and the little clip on the inside will make sure it doesn’t come loose. On the other side, I fiddled with the 1gn bracket for a bit and wound up cutting it up so that I’ve got a small square that has the keyed hole for the throttle cable to lock into place. I’ve got some small angle steel that I’ll weld to it, drill a couple holes in, and mount to the throttle body’s original bracket mount holes.
More solid progress today along with a slight disappointment.
The pair of slim-line cooling fans arrived. I was hoping to just use the zip-tie method to attach them directly to the radiator and then just deal with the wiring. Unfortunately, the little plastic parts are complete garbage and every single one of them broke through just the act of trying to push the zip tie through.
So instead of doing it that way, I’m working on fabricating mounting brackets from some leftover steel bits I’ve got laying about. The bottom of the radiator has slots for the fans to slide in to and then there are two bolt holes at the top of the radiator for each fan. I’m going to make four brackets like the one below and bolt them to the fans to hold the bottom in place. Then I’ll make a bracket that will go across the top with the fan bolted to the metal and then the bracket bolted to the radiator. It should work okay, but it’s just more work that I didn’t expect to have to do.
Here’s one of the fans with the one lower bracket attached.
I did a little more organizing and wrapping of the wiring harness and I’m really liking the way it’s turning out. The only way that it could look better is if it had that real tight protective weave sheath around it, but I’ll take what I’ve got:
The TPS and IAC are installed in the throttle body and the throttle body is installed on the manifold. It’s a tight fit, but it works:
One problem-that’s-not-really-a-problem is that the TPS pin outs are slightly different. Orange should be the +5VREF, the black-blue should be sensor ground, and the purple-white should be the signal. The connector on the left is the connector that came with the TPS while the one on the right is the original DOHC one. Pins 1 and 3 are swapped. Rather than try to swap the pins, I’m going to cut off the DOHC connector and wire in the pigtail from the Caravan that donated the TPS, and that works out well because with the new position, the old connector doesn’t quite reach.
With the new position of the throttle body comes a need for a new cold side pipe. The IAT sensor needs to be installed in that tube yet, but the old section of silicone piping that used to be on the air filter just happens to be a perfect fit! It’s actually a piece of the hot side pipe from a PT Cruiser – I tend to collect those when I see turbo PTs in junkyards since it’s the right size and material and super cheap.
The throttle cable is definitely not long enough so I’ll need to install the one from the Stratus. I’m working the wiring back and it’s starting to look much cleaner. The upper radiator hose is resting against the hump for the MAP sensor, so I need to do something about that still. Hopefully tomorrow night will be spent finishing up some brackets – I need to get the cooling fan brackets made as well as make a bracket for the throttle cable.
Before we get to this evening’s results, there are a couple other updates that I’ve been remiss in adding. First off, in addition to the suspension order, I’ve also placed my order to import some new dry weather tires. I have no idea how long that’s going to take, but I’ll keep an eye on that. I’ve also been shopping quick release steering wheel setups and new seats. I never plan to do anything that would require SFI or FIA certification/homologation with the car so I’m looking at some more budget one-piece options that would work for RallyCross and maybe an HPDE/PDX once in a while. I’ve found these seats on Amazon that ship as a pair with the appropriate bracketry for a Neon and then there are high-back seats from Jegs which I’d need to fabricate my own brackets for. I actually have no idea how easy or hard it would be to do that, so I need to dig in to that some more.
In an effort to tidy up the wiring, I picked up this self-fusing silicone tape and it’s just amazing stuff! There’s no adhesive on the tape, but once it touches itself it almost instantly fuses together. More on that in a bit.
This morning I got out the junkyard with eastsidemav and found a couple gems.
There’s a super long throttle cable from an 01 or 02 Stratus, an upper water neck from the same car, a lower water neck from an 01 or 02 PT Cruiser, and over there on the right, I got a new cover for the PDC since mine broke and fell off at some point. Trying to make it look a little nicer, remember?
Here’s the water neck bits all put together:
The PT upper is way too tall, the 2.0 upper doesn’t fit, so the one from a Stratus is perfect. I probably could have used the PT turbo lower and made it work, but for some reason Chrysler moved the various ports around over the years. Here’s the 05-06 lower that I already had next to the 01 lower that I got today:
You’re looking at them from the bottom up as they would be mounted. The one on the left is the newer style. You can see that all the bosses are there, but for different applications and different years, they’ve drilled them differently. On the newer style, the CLT sensor bung is drilled into the left side which on my car would be a difficult fit due to the low pressure power steering line. The 01 PT Cruiser lower on the right, however, has the heater core output in the right spot and has the CLT sensor bung pointed towards the front where the wiring won’t be rubbing against anything.
The CLT sensor itself was different since I believe the newer cars used a single sensor and then fed the gauge cluster as an output from the ECU while mine is set up to have two sensors in one so the ECU (now MegaSquirt) and the gauge can each get their own signal. I swapped out the sensors so everything should continue to work the way it did before.
Here it is, all bolted up:
With the water neck sorted, I went ahead and got the intake manifold bolted up. I’m loving the way it looks:
I trimmed down the radiator hose to prevent it from rubbing against the intake, and I went ahead and started wrapping the wires. I had to extend the CLT sensor wires since the sensor has moved a bit. I also pulled the little fuel line locking clip off of the old DOHC fuel rail and put it on the new chrome one. The silicone wrap for the wiring really comes out looking a lot nicer and cleaner than the old split loom that I was using before:
Compare that to how the old setup looked:
Hmm. The 1gn water filler neck has the wrong bolt holes and the PT turbo filler neck is too tall to fit under the hood. Looks like I have some research to do tonight and some hunting to do tomorrow morning at the junkyard.
The only other thing I accomplished was to clean up the bottom part of the water neck and bolt up the knock sensor to the block.
Long day. Super tired. Measured the radiator and ordered up 2 slim 10″ fans to replace the original ones. They’re the type that basically get zip-tied through the radiator and they should fit between the radiator and the intake manifold if I relocate the radiator forward just a hair.
The order is placed for the new suspension. Front and rear adjustable dampers with 2.5″ diameter springs and camber top mounts for the front. He’s telling me it’ll be 2-3 weeks before they ship, so in the meantime, I’ve got other stuff to do.
Starting out tonight was this mess:
The 2.0 intake manifold came off and I cleaned up the RTV that was previously used to seal things up.
At this point, there are no gaskets in place, I just wanted to test-fit and see what problems I’m going to run in to. I like the way it looks, though:
I’ve got a lot of clearance problems, though. The radiator inlet is rather unfortunately positioned:
And with that manifold in place, I only have about 2.5″ of clearance behind the radiator so the original fans aren’t going to fit. I’ve mocked up leaning the radiator forward to get that 2.5″ of space and that gives me a somewhat suboptimal, but maybe passable amount of clearance for the radiator hose. I think that the original throttle cable just might be long enough, so that’s good news. There isn’t much clearance between the throttle lever and the transmission, but there is just enough to make it work.
What I need to figure out is moving the radiator forward, getting a slim fan to replace the existing ones, and then coming up with a new pipe to go from the intercooler to the throttle body. I’ll also take the opportunity to re-run and clean up the wiring a bit, since it’s an ugly mess.
Davenport Racing USA never accepted my PayPal payment, didn’t respond to email, and their phone number is disconnected. I’m assuming that they are no longer a going concern, and I’m not getting my HotBits so I cancelled my PayPal payment and appear to be out absolutely nothing except a week’s time of waiting.
I reached out to AMR Engineering last night and they seem to respond to email and actually know some things. I’ve heard some horror stories of people not getting product for really long amounts of time, but I’ve also heard that when the product does show up it’s a quality thing.
I will probably go ahead and order those up but first I need to figure out what spring sizes and rates I need.
The good hardware stores are all closed on Sundays so I tried to go to Ace and get some stainless and/or chrome hardware. It was pretty much a bust. They had chrome hex key button bolts that would have worked for the 5 intake manifold bolts, but they wanted something like $3.29 each for them, and it didn’t seem worth it. I think that a stainless flange head hex cap bolt is what I want, and they didn’t have anything like that. I did, however, score a couple chrome bolts for the fuel rail and one of the long bolts that I need for the throttle body attachment.