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Everything posted by nipper
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probably made worse by trying to explain things ping has been catgaroized as pre ignition and knock. i also should have stuc k with cycle names instead of micxing crank angles. When i talk about ignition or burning of fuel i usually talk in refernce to BTDC not after. Intake strroke starts before the compression storke, hence my 280 degrees comment, so that was correct. For the engineering people http://powerlab.mech.okayama-u.ac.jp/~esd/comodia2004/C6_1_049.pdf#search=%22combustion%20and%20knock%22 http://www.stanford.edu/~bmoses/knock.html i used to have a great color scan of a flame front, as it looses something in black and white. if your still with me, a great explination of the weakness of the knock sensor http://sine.ni.com/csol/cds/item/vw/p/id/398/nid/124300 and more so in english http://www.exxonmobil.com.sg/files/PA/AP/Synergy_Fuel_System_FAQ.pdf#search=%22combustion%20and%20knock%22 scroll down to the second page. nipper
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Is it just me, but i dont get the big deal about ethanol. In NY we have had ethanol in our fuel since i guess the 1980's. Ping is very sensative to air temp humidity altitude and load on the engine (head vs tail wind). Just because you hear it in one place doesnt mean you have it. This is getting to be one of those i may just bow out of, since no one has engine knock. Ping is just due to the fact that engines run at the stochiomteric ratio, and therefor run very hot inside the combstion chambers. All cars ping once in a while, and here's another thought. Just because you cant hear it doesnt mean its not happening. Ping happens before TDC, knock happens after tdc. Ping happens as the air fuel mix is being compressed, usually after the spark plug has fired. It starts another flame front due to a hotspot in the cylinder, its not a godd thing, but its also not horrible, just anoying. Knock is the air fuel mix getting ignited after tdc, as it starts to enter the cylinder. This is very yery bad. As the piston starts to go up on what should be a compression cycle, it has an uncontroled explosion on which it has to fight again. PING = Pre ignition is just that. Its happening in the 15-35 degrees before tdc, where normal combustion takes place to begin with. Knock is happening usually 280 degrees before TDC which is very very bad, this is what blows up a piston. nipper (hope that helped)
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hrmmmm sooooo 7 years of researching these cars, including being various members on boards, a degree in automotive engnieering, member of SAE for 30 years, and im not an expert (not to mention 25 years of owning subarus). I've read every single TSB on these cars, read all the engineering failure analysis, and im called a back seat svx'r. i am so biting my tounge. http://www.drwtransmission.com/subaru_svx.htm http://uniquecars.carpoint.ninemsn.com.au/portal/alias__uniquecarsau/tabID__203009/ArticleID__5313/DesktopDefault.aspx How many people on here can even say they have taken apart several SVX torque converters to analyze and see the problem first hand, or cut open an SVX tranny cooler, or had the material analyzed to see exaclty what it was (i really miss college labs sometimes). i dont even know what to say in polite company so i wont even say it. have a nice day nipper
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look at the front tires, see if there are nay flat spots. If they used a trolly then you will be ok. Look at the parking space and see if there is any drag marks. a college tow operator may not be in that much of a rush as its a safe bet that the driver is busy for the first 3 hours of the day. nipper
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Your tranny is dying. i dont like that you actually saw particles in the oil, usually they stay in the pan. That means something is actually chewing itself up. Only a matter of time before you loose forward motion. Swap it out, dont rebuild it. There arent alot of parts in the kit, but you need alot of special tools, and its not something that you want to devlop a learning curve on. nipper
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there is a svx board, i dont have the link. you cant really tell anything by looking at the rotors (warped). Is the noise a roar (svx's have been known to have the rare rear end go bad) DO all the tires match Does the noise go away when she applies the breaks DOes the break pedal pulse Check the ger lube level in the diff. nipper
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If this was a manual, they took a huge risk. They could have lost the car and hurt someone, along with driveline damage. If this was an automatic, less chance of killing somone and of internal damage. Personally i would write a letter to the college, to the towing company, and to the state DMV. Certified letter to the first two. Towing companies are getting away from slings, but they are speedy for impounds. nipper
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ive had silverstars for a year now and they seam fine. Once again it goes back to how foggy your lense is. Some of our road surfaces here, anything short of sunshine get washed out on a wet road. Xenon bulbs for a buck, think about it, you get what you pay for. There are HID conversiond for 250-500 bucks, im wating for someone to try them first. Also make sure your headlights are aimed properly. No one ever checks the aim. nipper
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EEEEEEEEEEEEEEKKKKKKKKKKKKKK looked original:confused: that is supposed to be changed every 30,000 miles. You have two choices, change it now and hope that fixes it, or take it to a shop and get prpeared for a small repair bill (just replace the solenoid), or a huge one, rebuild the AWD unit. i'ld take it to a shop and see what they say, since the fluid has to go anyway. nipper
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DUty c SOlenoid is not just TB. Its a valve thats stuck open, internally shorted or opened, or electrical failure resulting in TB. SOunds like yours is stuck open. This can be from gunk in the fluid or a mechanical failure of the valve. Another possability is that your clutches are so glazed that the dont transmit power to the rear wheels anymore. nipper
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Find another mechanic. i wouldnt take a car to this guy if he was doing it for free, as he does not know subarus. All cars have aluminum engines these days. Any car over 130,000 miles can blow a HG. We have them blow HG here, get repaired, and the problem is gone. The "lots of aluminum" line is pure crap. He shouldnt be in business, man things like this really piss me off. The big question here, which you dont say, is did you bake the engine, or did you not notice the temp gauge was pegged for a while. DId it stall on you? a HG runs 1200-1500 to fix. I would fix this one, since 99% of the time you fix the HG only once. There most likely is nothing worng with this engine aside from HG if you didnt bake it. i would keep the car. nipper
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Progress Driving lights are mounted, i mounted them right to the bumper skin. Shockingly they are tight. At some point ill taxe the skin off and bolt them properly. Air horn. You know there isnt a hell of a lot of room under that hood. The horns got mounted in front of the radiator behind the grill. Unfortunitly i had to mount the compressor there too. There was a spot next to the battery, but i wanted to keep that fairly clear. Next to the battery i have a mounting plate with three relays Lights arent aimed yet Rear fog light isnt here yet Horn isnt hooked up yet (and not happy with the quality of the compressor) now i have to polish my headlights, they look bad next to the Hellas. once all is wired i will post pictures (somewhere) nipper