All the cool kids are doing it..., Low budget progress thread (Slow Race prep.) |
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All the cool kids are doing it..., Low budget progress thread (Slow Race prep.) |
BMXerror |
Sep 17 2007, 09:42 PM
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#101
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Senior Member Group: Members Posts: 1,705 Joined: 8-April 06 From: Hesperia Ca Member No.: 5,842 |
Well, with all the work that I'm doing to my car lately, I might as well start my own progress thread.
Backstory I bought 4702912742 from my pops about a year and a half ago for $600 dollars, but it wasn't a steal. It had been sitting for about five years and needed a lot of work. He A couple years later he had been looking for a teener for a little while and picked this one up cheap at a dealership in Pomona Ca. He drove it for a while, but it had tons of problems, and soon he decided to sell it. However, the person who test drove it blew first gear, and out to the back yard it was sent. Fast forward five years to when I was financially ready to get a car to start racing. Long story short, after deciding that I wanted the 914 instead of an older Miata, I told him I was interested. He said that if I bought him a set of mufflers for his bike, we'd call it even. After that I spent about another 4K just getting it drivable. I replace all four rotors, rebuilt all four calipers, replace the brake lines with braided steel, replaced the hard lines that I broke, replaced the master cylinder, resealed the motor (after my socket and extension locked the motor up), bought two trannies for it (the first one was no good), put a new clutch and pilot bearing in it, put new rubber on the ground (Khumos), fixed and lubed all kinds of latches and hinges to be able to get into all the various compartments, replaced most of the vacuum lines and fuel lines.... the list goes on. These were all just stock replacements to get it running well. I further had to fight with the injection system for a few months until I figured out that I had it hooked up wrong. (IMG:style_emoticons/default/headbang.gif) Of course, this is the very abbreviated version of the story. As anyone with one of these things knows, the words it takes to describe what parts you changed don't even come close to showing the blood, sweat, and yes, sometimes tears that you put into your work. But anyways, it is running decent now (the motor is still a little tired) so it's time to do some improvements. After all, racing is what I bought the thing for. So I'll try to bring anyone who cares up to date on some of the things I've been working on. Mark D. |
BMXerror |
Jul 11 2008, 10:32 PM
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#102
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Senior Member Group: Members Posts: 1,705 Joined: 8-April 06 From: Hesperia Ca Member No.: 5,842 |
I had to install an AFR gauge to monitor the fuel mixture during break-in. With the new cam and compression, I wasn't sure how the D-jet would interpret the manifold pressure. As it turns out, it has a really flat AFR curve at wide open throttle, but it's a bit fat at partial throttle around town. I'll have to work on that. But for AX and canyon runs, right now it works great. I did have to drop the fuel pressure to about 28 PSI to lean it out a bit. I'm running between 12.8 and 13.5:1 at WOT.
Here's a couple pics of the gauge install. The first one is fuzzy as hell because I couldn't get far enough away to get the camera to focus, but anyone with a Monza exhaust ought to know where this is. It's all the way at the back, between the two mufflers. Ugly ass, flux-core welds, but it's a shitty exhaust that will be pitched soon, hopefully. The gauge. This is the control module for the AFR gauge. I HAD to put it in this location because the kit wasn't designed for mid engined cars. The loom from the O2 sensor and the loom from the gauge were JUST long enough to meet in the middle. Believe it or not, installing this gauge was one of the most pain in the ass projects I've ever done on the 914. It took me a 10 and an 8 hour day (all weekend) to install this thing and get it working. I had to figure out how to route the wires without cutting them, and make it clean and all. I also had to figure out how to wire the thing with their frankly pathetic, 2 page manual. However, the results are pretty cool.... I like flashing lights and numbers. (IMG:style_emoticons/default/biggrin.gif) Oh yeah. I also stripped an exhaust stud in the process... A STEP STUD! So I had to helicoil that. PIA, but it came out good. Mark D. |
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