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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#1
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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 |
Jan 3 2009, 09:48 PM
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#2
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Senior Member Group: Members Posts: 1,705 Joined: 8-April 06 From: Hesperia Ca Member No.: 5,842 |
This is the dash before startup. All switches down. The far right switch is the override, and the light above it is the warning light. Down means it's overridden and it gets flipped up after the car is started.
This is the panel in a 'fault' condition. The ECU switch (second from the left) is up because the car was running, but I took the sensor wire and grounded it to test it, and it killed the engine immediately. Note that the override switch is up (off), meaning the safety circuit is active, and the light is on, meaning that the switch has tripped on low oil pressure (or grounded sensor wire). This will actually be reversed when I make that a momentary switch. It'll normally be down, except when you hold it up during startup to override and allow the engine to start. Well, that's it! I took it for a test drive and really bogged it off the line a few times to see if it'd trip off under normal (or close to normal) conditions, and it didn't. The only time it when off was when I flat out stalled it trying to bog it, and then I heard the relay click and the light went on. I think the response of the pressure switch is a little slow, but even so, if I broke an oil line on the track or something, it should be fast enough to save the major components of the engine, if not the bearings. The total cost was under $30 dollars. That includes some extra pieces that I ended up not using, but doesn't include the pressure switch which I already had, and a couple connectors and stuff. If it works ONCE, it's more than paid for itself! Thanks for reading.... GOD That was long! (IMG:style_emoticons/default/beerchug.gif) Mark D. :edit: full credit goes to my dad on this one. It was his idea in the first place (said he saw it on an old Clarke forklift in the early 80s) and I would've been lost trying to design it without him. Thanks pop! |
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