People that think they know things about cars but don't
242 replies, posted
[QUOTE=mpntball2012;28605505]Please explain why you say this.[/QUOTE]
well in norway at least they cost more to own
[QUOTE=lemon_lover;28594179][url]http://www.youtube.com/watch?v=fUH8S5wvK0M&lc=PFZI1I2mC7L0ytwuSXM-CLSyRaRnbM18kiyBU7Jcac8&feature=inbox[/url]
Look at the linked comment.
Tell me that isn't compressor surge.[/QUOTE]
that is a fucking monster, i would religiously get up at 6am every day and go and masturbate furiously in the drivers seat if i owned that.
but yeah sounds like a nasty case of compressor surge. uk nissan boys are the worst for this. hey if i disconnect this vac line then my car makes the pigeon noise!!!! no your turbo is just screaming in pain.
i could be wrong, but it can't be healthy can it?
Not healthy at all. I look for him to blow the seals out of it pretty quickly, and then shortly after that lose all boost when his turbine blows apart.
My little brother.
But he's 8 :v:
[QUOTE=Ldesu;28606273]well in norway at least they cost more to own[/QUOTE]
they are more fuel efficient than petrol engines but they need to be more stronger-built, dont remember why
[QUOTE=Pringles.;28616525]they are more fuel efficient than petrol engines but they need to be more stronger-built, dont remember why[/QUOTE]
to resist the operating pressure caused by high compression ratio and large amounts of torque to the crankshaft
[editline]15th March 2011[/editline]
that's why they cost more/made stronger
i overclocked my mustang cause im smart with cars and computers :smug:
[QUOTE=Pringles.;28616525]they are more fuel efficient than petrol engines but they need to be more stronger-built, dont remember why[/QUOTE]
i heard it explained as the fuel is more exploding than burning
[QUOTE=Hell Strike;28620703]i heard it explained as the fuel is more exploding than burning[/QUOTE]
Just quoting wikipedia cause it explains it in a fairly simple and short-version way.
[quote]In the true diesel engine, only air is initially introduced into the combustion chamber. The air is then compressed with a compression ratio typically between 15:1 and 22:1 resulting in 40-bar (4.0 MPa; 580 psi) pressure. This high compression heats the air to 550 °C (1,022 °F). At about the top of the compression stroke, fuel is injected directly into the compressed air in the combustion chamber. This may be into a (typically toroidal) void in the top of the piston or a [I]pre-chamber[/I] depending upon the design of the engine. The fuel injector ensures that the fuel is broken down into small droplets, and that the fuel is distributed evenly. The heat of the compressed air vaporizes fuel from the surface of the droplets. The vapour is then ignited by the heat from the compressed air in the combustion chamber, the droplets continue to vaporise from their surfaces and burn, getting smaller, until all the fuel in the droplets has been burnt. The start of vaporisation causes a delay period during ignition, and the characteristic diesel knocking sound as the vapor reaches ignition temperature and causes an abrupt increase in pressure above the piston. The rapid expansion of combustion gases then drives the piston downward, supplying power to the crankshaft.[/quote]
It's more that they run a compression ratio of like 16:1 to upwards of 21:1 so they have to be built very strong. Because it's so high and the type of fuel being used, they don't need a spark plug. The compressed air alone is enough and the fuel is added while the air is being compressed. I may be wrong on this but it makes far more torque than a gas engine because the explosion is so "violent," especially in diesel engines used for smaller pickups and 18 wheelers. Some use a multi-layer head gasket I think and almost always uses a turbocharger. Take the I6 Cummins for ex., it can handle upwards of 50 pounds of boost on the stock motor. I think "strong" is an understatement for how their built.
When one of my teachers needs us to speed up work, she always tells us to "switch on the turbo"
WAT. :v:
[QUOTE=mfb412;28622806]When one of my teachers needs us to speed up work, she always tells us to "switch on the turbo"
WAT. :v:[/QUOTE]
when used in a context like that, it is completely understandable.
My brother is wondering why is car has bad performance. I think it's cause he's never given it an oil change in the year that he's had it. Not even adding oil.
[QUOTE=Second-gear-of-mgear;28628156]My brother is wondering why is car has bad performance. I think it's cause he's never given it an oil change in the year that he's had it. Not even adding oil.[/QUOTE]
I almost caused a local BMW shop to go out of business when I complained that they replaced my oil with 1.5 quarts less than the amount my X5 needed.
[QUOTE=mpntball2012;28621661]It's more that they run a compression ratio of like 16:1 to upwards of 21:1 so they have to be built very strong. Because it's so high and the type of fuel being used, they don't need a spark plug. The compressed air alone is enough and the fuel is added while the air is being compressed. I may be wrong on this but it makes far more torque than a gas engine because the explosion is so "violent," especially in diesel engines used for smaller pickups and 18 wheelers. Some use a multi-layer head gasket I think and almost always uses a turbocharger. Take the I6 Cummins for ex., it can handle upwards of 50 pounds of boost on the stock motor. I think "strong" is an understatement for how their built.[/QUOTE]
This, diesel engines can get higher torque than a petrol engine. Maintenance is more expensive for a diesel engine, tho...
It is 'forbidden' to say explosion, it's combustion, since an explosion is uncontrollable and combustion is not, that's how i learned it.
[QUOTE=vexxrz;28633159]This, diesel engines can get higher torque than a petrol engine. Maintenance is more expensive for a diesel engine, tho...
It is 'forbidden' to say explosion, it's combustion, since an explosion is uncontrollable and combustion is not, that's how i learned it.[/QUOTE]
combustion is a type of chemical explosion.
[QUOTE=worm;28633288]combustion is a type of chemical explosion.[/QUOTE]
If we wrote explosion on a test, they took points for using the wrong word, so i'm just saying what i learned :)
lmao, your teachers must be retarded or something.
[editline]16th March 2011[/editline]
petroleum is a mixture of hydrocarbon compounds, whilst diesel is a distillate of petroleum
[editline]16th March 2011[/editline]
hydrocarbons are an explosive chemical.
[QUOTE=Unreliable;28630440]I almost caused a local BMW shop to go out of business when I complained that they replaced my oil with 1.5 quarts less than the amount my X5 needed.[/QUOTE]
What car did you run in front of to get an X5?
not everyone is a poor shit y'know
[QUOTE=worm;28633673]not everyone is a poor shit y'know[/QUOTE]
I was just curious. Some guy ran in front of my Flying Spur around four months ago.
people dont step near my hilux in fear of dying spontaneously
Worm, anything new on your possible tire and gear swap?
[QUOTE=Second-gear-of-mgear;28633609]What car did you run in front of to get an X5?[/QUOTE]
I bought it from the [i]same[/i] shop for 6k with a rebuilt title. About a month after I bought it, there was another car crash (not caused by me). It was fixed there. Then I complained when I had the check engine light. That was when the oil issue occurred.
Now I'm trying to sell it for 5k.
Also, it was a joint car, my mom wants to have her own BMW (7-series, I really doubt it'll happen). And to get her out of the car, I told her about selling it. That's one of the many reasons why I'm hellbent on buying a Supra.
[QUOTE=Unreliable;28646029]I bought it from the [i]same[/i] shop for 6k with a rebuilt title. About a month after I bought it, there was another car crash (not caused by me). It was fixed there. Then I complained when I had the check engine light. That was when the oil issue occurred.
Now I'm trying to sell it for 5k.
Also, it was a joint car, my mom wants to have her own BMW (7-series, I really doubt it'll happen). And to get her out of the car, I told her about selling it. That's one of the many reasons why I'm hellbent on buying a Supra.[/QUOTE]
That's not that bad of a deal. Did you see the pictures of the wreck it was in? I'm always scared to buy a rebuilt car probably stemming from the Galant that my mom purchased in Florida with a Photoshopped CarFax sticker on it. Turns out it has actually been totaled 8 times, and shifted like a semi truck.
[QUOTE=Second-gear-of-mgear;28648363]That's not that bad of a deal. Did you see the pictures of the wreck it was in? I'm always scared to buy a rebuilt car probably stemming from the Galant that my mom purchased in Florida with a Photoshopped CarFax sticker on it. Turns out it has actually been totaled 8 times, and shifted like a semi truck.[/QUOTE]
No pictures, all I know is the guy fixed everything that went wrong, bent frame, radiator was dead. You just can't sell a car with a title like that for much.
My accident was the stupidest thing to ever happen. I sat at a goddamn intersection with a median beside me when a white grand prix goes 60mph into my door at sideswiping angle.
[QUOTE=mpntball2012;28638903]Worm, anything new on your possible tire and gear swap?[/QUOTE]
did the tyre swap. havent had trouble in the city, but if i have to go 4x4'ing to test it out on tracks
if you need a reliable car, don't buy a supra... trust me... unless you keep it all stock and baby it like a granny.
Once you start wanting power... it never ends $$$$$
[QUOTE=shipkiller;28651409]if you need a reliable car, don't buy a supra... trust me... unless you keep it all stock and baby it like a granny.
Once you start wanting power... it never ends $$$$$[/QUOTE]
The same is true for any car. I have an 08 Si, K20z3 which is a super reliable engine. Boom here I am 2 cracked exhaust manifolds later...
[QUOTE=worm;28649006]did the tyre swap. havent had trouble in the city, but if i have to go 4x4'ing to test it out on tracks[/QUOTE]
Surprising that 38's wouldn't effect anything. What gears does it have in it already?
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