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Everything posted by nipper
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http://auto.howstuffworks.com/power-brake2.htm OK i see freezing as the cause. One side of the booster is exposed to moist cabin air, the other side to dry outside cold air. You Get this mix you get condensation. When the air is cold enough that condensatiuon freezes. Check valve doesnt have anything to do with it. When it is below 35 the AC in the car does not work, so there is no way to dry out the air. http://sg.answers.yahoo.com/question/index?qid=20070202205101AAz5pfN I just searched the net and i come up with an unsatisfactory answer (flush the brakes). In that one article that stated that, the respondont just did a flush the year before. (he had a 2000 subaru). Now there arew two failure modes. The one with the bad master cylinder, the pedal goes to the floor. The freezing Power Brake booster, you get a very hard pedal. best i can tell is that we all need pwer brake boosters (im not sold on that). If there is no recorgnized problem, then there is no solution. For now, DO NOT DRIVE BELOW 30 DEGREES UNTILL YOU HAVE A BRAKE PEDAL! nipper
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I think it is related to the mass og the replacement half shafts. Forget anything about the car moving. When the car is in neutral or park the engine is not fighting a mechanical brake (the transmission). Everything is spinning freely. When the car is in drive, and not moving, the engine is under load. Engines under load run a little rough compared to no load. NOw add unequal weight on either side of the engine/tranny, you can magnify this vibration. There is an entire specialty for this, its called NVH noise nibration and harshness. It's a bit complicated to explain over the net. Sometimes having mismatched weights on either side can make things far worse then one would think. You can induce vibration that was invisable before. It's part engineering part black magic. You have a moment arm at the half shafts. For every distance X you move away from the center of the drive line, the affect increases. SO if one half shaft is heavier then the other, you can induce a rather heavy vibration. nipper
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Not true. The engine is rotating, the pistons are moving, the accesories are moving. There is a very busy chunk of metal under the car, even without forward movement. Its added mass to the engine. the engine is vibrating. If you have mis matched weight on the engine, you can induce movement about the axis (yaw). If its not evenly done you can amplifier any vibration. NVH is an amazing science. nipper
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Water pump
nipper replied to drquasievil's topic in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX
The water pump tends to fail around 140-180K (if its going to fail). technically if your leaking (from the weaphole) your already failing. Unlike fan belt drivne pumps, if the timing belt driven pump fails spectacularly, its the same as snapping a timing belt. nipper -
Pumping the braakes on an ABS system wont hurt it, but instead of doubling your breaking distance you may triple it. Let the silly machine do the work, and you really need to give yourself lots of room in icy/snow conditions. Give yourself as much distance as you would if the car didnt have abs. nipper
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tribecca
nipper replied to nipper's topic in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX
Now they say the standard is 4 and 8 o'clock because of the airbag. I find that terribly uncomfortable. nipper -
tribecca
nipper replied to nipper's topic in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX
I have, but it also had a connecting rod sticking out the side of the block along with choice words i do beleive i said "man thats ugly...." nipper -
tribecca
nipper replied to nipper's topic in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX
Well they need to look at the lower end of the market too. Suzuki has a decent awd car for 17,000 (possibly where the european justy comes from). Not only is it electronic awd, but it has that magicl switch which lockes up the AWD to 36mph. nipper -
Water pump
nipper replied to drquasievil's topic in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX
I basically replace everything under the timing belt covers when i get the belt done. This just about guarentees you 100,000 trouble free miles (from that part of the engine). -
i have never ever heard of doing a valve job on one side of the engine. Doing it just on one side of the engine can lead to a rough idle and other weirdness. How did they decide it needed a valve job (which is rare on a subaru). What you may need to do is find a shop with a computerized engine analyzer and let them look at the car (people rely way too much on the ECU to trouble shoot). Usually the reason for a valve job today is a burnt valve, not carbon buildup. nipper