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Everything posted by Fairtax4me
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Can you post a picture of it? If the crankshaft itself broke you have a serious issue there but I don't see that happening. I think you've experienced the dreaded loose harmonic balancer pulley bolt. Usually happens within a few months after someone has changed the timing belt. The bolt doesn't get torqued down correctly and ends up backing out. This lets the balancer wobble around and it chews the key and the inside of the balancer to bits. Again, very common, lots of info about it here.
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Exactly which part broke? The outer section (the part that drives the belts) breaking loose is common and all you do is replace the balancer, assuming that it didn't grenade and take out a bunch of other stuff with it. If the bolt came loose and allowed the balancer to start wobbling around that is also common and is a bit more involved repair but is doable.
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Speed ratings are for just that, speed. Different tire compounds and constructions all affect a tires speed rating. If you don't plan to go more than the speed limit of your average interstate highway (65-70 mph in most places) then it doesn't really matter what speed rating you get as they're all well above the legal speed limits. If you're concerned with wear and traction, pay more attention to the tires treadwear, traction, and temperature ratings. Tirerack is a good resource for info about all of the ratings that modern tires are graded on, and they have tons of other useful tire info as well in their Tech section. http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=35
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Wheel time
Fairtax4me replied to 1-3-2-4's topic in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX
Not if you match the tire size. Tirerack is good at suggesting tires that closely match the original size. You can pick your own size and see how it compares here: http://www.miata.net/garage/tirecalc.html -
That's why it has the speed limiter. Most 14" tires are "S" speed rated which is 112 mph. The risk of a blowout multiplies something like 5 times for every 5 mph over the maximum rating. So at 122 mph you are ~25 times more likely to blow out a tire than at the tires "safe" rated maximum speed of 112 mph.
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First thing I'd try is just new plugs and wires. At 105k if that hasn't been done recently it's time to. Use silicone grease (di-electric) on both ends of the plug wires for water/corrosion resistance. If it has been done did you use Subaru wires? Next guess would be a failing coil pack or ignitor. Try starting the car at night and take a peek under the hood for blue flashes around the coil pack and plug wires.