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    Thread: Go ahead...ask those car questions you were always afraid to ask...

    1. Member DerSpiegel's Avatar
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      09-23-2012 01:05 AM #3876
      Quote Originally Posted by accRazor View Post
      This is a question that I have been thinking about for some time now. Are car mods illegal (particularly engine related)? What classifies as an illegal mod? Does this depend on state (USA) regulations?

      For example, adding a turbo to a NA engine.
      I see you're in SoCal by your profile, so I'll take it from there. Car mods are defined as illegal mostly on a state-to-state basis. You and I are in Cali, so that makes us special in a bad way. California is strict with engine modifications. Aftermarket companies have to apply to the California Air Resources Board (CARB) showing they do not interfere or compromise the emissions standards for a particular vehicle in reference to their products. Here in California it's called an Executive Order or E.O.

      Things such as catback exhausts and cold air intakes are relatively easy for companies to make California smog legal. When it comes to software reflashes, intake manifolds, headers, cylinder head swaps, etc, that gets more difficult. When adding forced induction such as a turbo or supercharger, it is illegal as all bugger hell unless the company that supplies it has gone through the entire CARB certification process.

      http://www.arb.ca.gov/msprog/aftermk...es/amquery.php

      I can tell you more when it comes to engine swaps, etc. if you want to know.
      Last edited by DerSpiegel; 09-23-2012 at 01:09 AM.

    2. Member DerSpiegel's Avatar
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      09-23-2012 01:14 AM #3877
      Quote Originally Posted by BRealistic View Post
      Why does car a/c systems just drain water onto the ground below the car?
      Why not run the water to an intake area to help cool the intake charge?
      It's free pure (cold) water.
      If you running the a/c, it probably hot....
      Probably because the amount of water due to condensation isn't useful enough to build a recirculation system for. If you did build a recirculation system for it, that system would have to adapt to the humidity of different climates, etc. adding to complexity, weight, serviceability, and all the other things manufacturers try to minimize when designing vehicles.

    3. Geriatric Member VDub2625's Avatar
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      09-23-2012 02:27 PM #3878
      Quote Originally Posted by DerSpiegel View Post
      Things such as catback exhausts and cold air intakes are relatively easy for companies to make California smog legal. When it comes to software reflashes, intake manifolds, headers, cylinder head swaps, etc, that gets more difficult. When adding forced induction such as a turbo or supercharger, it is illegal as all bugger hell unless the company that supplies it has gone through the entire CARB certification process.

      http://www.arb.ca.gov/msprog/aftermk...es/amquery.php

      I can tell you more when it comes to engine swaps, etc. if you want to know.
      Which is why even things such as cats have a 49 state, and a California approved, version, so they can charge more for that approval, or sometimes they won't even sell a CA version, just 49 state.

      As for engine swaps, as long as it is from a newer model year vehicle, and meets the newer emission standards, it's legal, correct? This I think is in opposition to most (all?) other states, such as here in MA where the engine must be newer, but the car's original emission standards apply (my friend bought a 97 VR6-swapped 95 Golf, with a CARB cert sticker, though ehre in MA it falls under OBD1 rules and doesn't even get emissions tested).

    4. 09-26-2012 11:04 PM #3879
      I saw on this window sticker. No schedule tune-ups - 100,000+ miles, under normal conditions.

      What does it mean? I know oil change, tire rotation/alignment etc. are necessary. What else then?

    5. Member TwoLitreVW's Avatar
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      09-26-2012 11:10 PM #3880
      Quote Originally Posted by above8k View Post
      I saw on this window sticker. No schedule tune-ups - 100,000+ miles, under normal conditions.

      What does it mean? I know oil change, tire rotation/alignment etc. are necessary. What else then?
      things like air filter, fuel filter, spark plugs, cap and rotor (where applicable), water pump, thermostat, coolant flush, etc.
      shut your mouth. sh sh shut your mouth.

    6. 09-26-2012 11:34 PM #3881
      Quote Originally Posted by TwoLitreVW View Post
      things like air filter, fuel filter, spark plugs, cap and rotor (where applicable), water pump, thermostat, coolant flush, etc.
      Thanks. I thought there is some service that dealer will do for free.

    7. Geriatric Member BRealistic's Avatar
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      09-26-2012 11:58 PM #3882
      Why is value tied so tightly to age more than anything else (for normal vehicles)?

      To me- condition and miles means more than age, but the market says modal year is the defining variable for vehicle in average or better condition.
      "I owe it to myself, and to my choir students, to not be upset about barns."

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      09-27-2012 12:45 AM #3883
      Quote Originally Posted by BRealistic View Post
      Why is value tied so tightly to age more than anything else (for normal vehicles)?

      To me- condition and miles means more than age, but the market says modal year is the defining variable for vehicle in average or better condition.
      Everybody wants the newest, latest, greatest, most reliable stuff out there. And generally speaking, I'd rather have a 100k mile car that's 3-4 years old than a 1997 car with 40k on the clock
      Call To Order Pizza But Too Shy To Answer The Door When It Arrives Crew

    9. Member drecian's Avatar
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      09-27-2012 03:13 AM #3884
      Quote Originally Posted by BRealistic View Post
      Why is value tied so tightly to age more than anything else (for normal vehicles)?
      I'd say safety is the main feature that improves every year, so a lot of people think that a newer car equals a safer car. To most people, a car is just an appliance for transport and they assume the rest of the word is the same with similar usage habits. So assuming every car is used at the same rate (even though it is not true), a newer car will have less wear in their minds.

      Mileage is the other factor in pricig because the general non car loving population can understand that more miles = more wear, over say, idling hours.

      IMHO anyway.
      Jeff

    10. Member Roadkilled78's Avatar
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      09-27-2012 10:52 AM #3885
      Quote Originally Posted by R-Acs View Post
      Might have already been answered but..
      Why is diesel fuel more expensive at the pump than gasoline? Isn't diesel less refined/processed than gas?
      Yes, it is.

      In some places it is cheaper. In some places it costs more. Oftentimes there is more tax included in the price of diesel because the assumption is that vehicles using it (large trucks) cause more wear and tear on the roads. Back in the day this was more true than today but I'm pretty sure commercial trucks still outnumber diesel cars by an order of magnitude especially when you consider it by miles traveled.

      This is also why there is farm/off-road only diesel sold in rural and farming areas. No state/federal road taxes applied so it costs much less. It's also dyed and you're in big trouble if it is found in your 18-wheeler.
      Quote Originally Posted by Hogan View Post
      What kind of ass backwards world do you live in where your Miata is broken and your Alfa is your reliable source of transportation?

    11. Member Fisherson's Avatar
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      09-28-2012 07:26 AM #3886
      Do IS300s have popup nav screens?

    12. Geriatric Member BRealistic's Avatar
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      09-29-2012 11:30 AM #3887
      Quote Originally Posted by FissionMailed View Post
      Everybody wants the newest, latest, greatest, most reliable stuff out there. And generally speaking, I'd rather have a 100k mile car that's 3-4 years old than a 1997 car with 40k on the clock
      Yeah- but even on the low end of the spectrum, people get all hot and bothered over newer even if the newer car was crap when new.

      For example- I am trying to help a friend find a cheap car (first mistake right there).....
      She found somebody selling an auto 2001 Kia Spectra in less than average condition with 250k miles for $1500..
      And I found better 90's cars in MUCH better shape for similar coin.. nope, she really wants the two thousand and one! car because 2001.

      I have had car dealers play the year thing too when trying to sell me on a trade/sell "You will be trading from a 2001 up to a 2002!" Yeah, but my 2001 has more stuff and has less miles and is in better shape.
      "I owe it to myself, and to my choir students, to not be upset about barns."

    13. Geriatric Member BRealistic's Avatar
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      09-29-2012 11:37 AM #3888
      Quote Originally Posted by Roadkilled78 View Post
      Yes, it is.

      In some places it is cheaper. In some places it costs more. Oftentimes there is more tax included in the price of diesel because the assumption is that vehicles using it (large trucks) cause more wear and tear on the roads. Back in the day this was more true than today but I'm pretty sure commercial trucks still outnumber diesel cars by an order of magnitude especially when you consider it by miles traveled.

      This is also why there is farm/off-road only diesel sold in rural and farming areas. No state/federal road taxes applied so it costs much less. It's also dyed and you're in big trouble if it is found in your 18-wheeler.
      I read somewhere that the diesel issue in the US is they just don't have the refining capacity to meet anything close to our road diesel fuel demand- add in the diesel fuel refining infrastructures developed in other countries/markets due to their past history of higher diesel use. So the US imports almost all(?) diesel fuel for road use.
      And what incentive do the oil companies have to set up more diesel refineries in the US when they can refine gas cheap (due to cheap natural gas)and export it for big profits?
      Last edited by BRealistic; 09-29-2012 at 12:14 PM.
      "I owe it to myself, and to my choir students, to not be upset about barns."

    14. Member RennbahnPolizei's Avatar
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      09-29-2012 11:55 AM #3889
      Weird! Diesel is cheaper over here than gas.

      Euro95: 1.870 Euro/L
      Diesel: 1.522 Euro/L

    15. Member 71DubBugBug's Avatar
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      09-30-2012 03:49 PM #3890
      why did older dtm cars have the exhaust tips point up?

    16. Member Jimmy Russells's Avatar
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      09-30-2012 03:53 PM #3891
      Quote Originally Posted by 71DubBugBug View Post
      why did older dtm cars have the exhaust tips point up?
      maximum pollution
      The OG Russells is back!

      Quote Originally Posted by Sump View Post
      I'm sure a lot of these guys went home after the carwash and played a little hans solo.

    17. Member drecian's Avatar
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      10-04-2012 02:57 PM #3892
      I've been trying to get my head around whether having flat/lower pressure tires affects the speedo.

      My mindbomb is that a flatter tire makes the rim closer to the ground, so it's like a smaller radius tire. On the flip side, the tire still has the same 'circumference' to travel per wheel/axle rotation.

      Anyone?
      Jeff

    18. Geriatric Member VDub2625's Avatar
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      10-04-2012 03:02 PM #3893
      Not the same circumfrence since the tire is no longer a circle. The tire "bunches up" at the front (however slightly), and bows out at the sides. The rolling diameter (from the center point to the ground, an average along the whole turn of the wheel) is what matters.

      But the, at max, 1-2" of difference from a flat tire won't affect the speedo greatly.

    19. Member drecian's Avatar
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      10-04-2012 03:42 PM #3894
      I think I'm slowly getting it, but in my head there is x amount of tread, and every revolution the axle makes, that x amount of tread must also make the full revolution unless is it slipping on the rim. Obviously the car is lower, so what am I missing here?

      O.o
      Jeff

    20. Member cockerpunk's Avatar
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      10-04-2012 03:50 PM #3895
      Quote Originally Posted by drecian View Post
      I think I'm slowly getting it, but in my head there is x amount of tread, and every revolution the axle makes, that x amount of tread must also make the full revolution unless is it slipping on the rim. Obviously the car is lower, so what am I missing here?

      O.o
      circumference of a circle = pi * diameter

      only changing the diameter will change the circumference, and thus the speedo reading.
      Quote Originally Posted by VigorousZX View Post
      In their unquenchable thirst for world domination, the aristocrats tax peoples time so as to keep its cattle viewed populations forever in servitude. They have gone as far as brainwashing and banning the western world that marrying your first cousin is forbidden and results in retardation... and thus have disturbed human evolutionary densities because broken families are easier to control and will better fall into debt slavery.

    21. Geriatric Member VDub2625's Avatar
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      10-04-2012 03:52 PM #3896
      Quote Originally Posted by drecian View Post
      I think I'm slowly getting it, but in my head there is x amount of tread, and every revolution the axle makes, that x amount of tread must also make the full revolution unless is it slipping on the rim. Obviously the car is lower, so what am I missing here?

      O.o
      The tire is doing all kinds of bad rubing when it turns and is flat. Also the center section usually bows up and doesn't even touch the ground. It's flexible remember

    22. Member drecian's Avatar
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      10-04-2012 03:59 PM #3897
      Quote Originally Posted by VDub2625 View Post
      The tire is doing all kinds of bad rubing when it turns and is flat. Also the center section usually bows up and doesn't even touch the ground. It's flexible remember
      Ah I getcha now.
      Cheers!

      Jeff

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      10-04-2012 04:19 PM #3898
      Quote Originally Posted by BRealistic View Post
      I read somewhere that the diesel issue in the US is they just don't have the refining capacity to meet anything close to our road diesel fuel demand- add in the diesel fuel refining infrastructures developed in other countries/markets due to their past history of higher diesel use. So the US imports almost all(?) diesel fuel for road use.
      And what incentive do the oil companies have to set up more diesel refineries in the US when they can refine gas cheap (due to cheap natural gas)and export it for big profits?
      It is not necessarily a factor of the refining capacity. It is not extremely difficult ot have the refinery change the balance of gas vs. diesel that they produce. The US does not import a majority of the diesel, we produce enough that we are actually an exporter of diesel.

      Quote Originally Posted by Roadkilled78 View Post
      Yes, it is.

      In some places it is cheaper. In some places it costs more. Oftentimes there is more tax included in the price of diesel because the assumption is that vehicles using it (large trucks) cause more wear and tear on the roads. Back in the day this was more true than today but I'm pretty sure commercial trucks still outnumber diesel cars by an order of magnitude especially when you consider it by miles traveled.

      This is also why there is farm/off-road only diesel sold in rural and farming areas. No state/federal road taxes applied so it costs much less. It's also dyed and you're in big trouble if it is found in your 18-wheeler.
      Diesel is often typically taxed higher as well due to the older mentality of the 80's diesel cars, stinky, slow, polluters. The higher tax was to provide an incentive to stick with the "cleaner" gasoline powered vehicles.

      As for the offroad diesel, there is/was a difference in the sulfur content in the US. For the on-road diesel application we have the current ULSD standard (15ppm or less). Off-road diesel on the other hand is 500 ppm but required to move towards the ULSD standard.

    24. Geriatric Member VDub2625's Avatar
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      10-04-2012 04:30 PM #3899
      Quote Originally Posted by tall tex View Post
      The US does not import a majority of the diesel, we produce enough that we are actually an exporter of diesel.
      Is it possible you're both right? i remember reading somewhere that the US exports and imports gas at high rates, maybe even at parity, but why, I have no clue (maybe that can be a question to answer here?).

    25. Member drecian's Avatar
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      10-10-2012 08:28 AM #3900
      Do seals around rotating parts leak more when the part is spinning? Examples being axle seals, rear main seals etc
      Jeff

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