Cars In General - Questions and Discussion

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I've never heard of an automatic transmission that would go past redline under light throttle, ever. I think there's something wrong with that particular transmission.

ATXs nearly always upshift as quickly as possible under light throttle, whether vacuum controlled or electronically controlled.
 
...I believe the programming on the GM 4L80E, 5L60E, and 6L80E will allow to rev slightly past redline, but not much before the rev limiter and the computer decides whats best for you.
 
It happens all the time, and IT HAS NOTHING TO DO WITH MAINTENANCE. It has always been over reving when I lightly press the throttle, Even when it was brand new. (If I go downhill, it will shift at the Rev Limiter with light gas. :confused: ) If I use medium throttle it shifts at low RPM. :confused: If I use full throttle it only over revs the shift a little bit when shifting from 3rd gear to 4th gear. I don't understand... The older versions of this has never done this...

EDIT: Good thing I floor it alot. :);) And again, it has nothing to do with the Transmission fluids... The Transmission itself is dumb. :dunce:
 
I'm going to go out on a limb and say there is something wrong with your car :)

You are saying that you put the car in drive, press the gas pedal lightly and the car doesn't shift up until past redline, like 6500+rpm?
 
Nope, it must be a design flaw in it. It happens to all of these, since they were brand new. (I drive more than just one of these, My uncles an MTA worker by the way, so I get to drive sometimes. :sly: ) I get to drive a different one every day, and I get to drive any one of these. I will post pictures of all of the cars and busses that this transmission problem happens to. I get to drive the Electric Hybrid bus too. (The one that never shifts and stays in the same gear, like a Honda Fit or Mitsubishi Colt.) :)
 
well if its a bus its probably a diesel, I would imagine that diesels will rev higher no matter how much throttle is being used, my womans car will rev high on low throttle only until the trans warms up, and only because its old.
 
I didn't realize you were still talking about busses. Does this happen on any street cars, or is this only a bus thing?

It happens on some street cars. I rememer it happening on my aunts ford focus se, and others.

well if its a bus its probably a diesel, I would imagine that diesels will rev higher no matter how much throttle is being used, my womans car will rev high on low throttle only until the trans warms up, and only because its old.

Yeah, its a Turbo Diesel. Its pretty new so it could be that or it could be just a screw up with the transmission in all of the Orion VII CNG's and some cars. :nervous:
 
I've never heard of an automatic transmission that would go past redline under light throttle, ever. I think there's something wrong with that particular transmission.

ATXs nearly always upshift as quickly as possible under light throttle, whether vacuum controlled or electronically controlled.


Yea mine only goes to the redline when I floor it. Never passes or gets close under light throttle. It shifts at like 2500 under light throttle.
 
CCX
is the bugatti veyron targa a real car?

Not yet, but I've heard dozens of times that they are "working on it." Given that it took them five years just to build the regular Veyron, we may be waiting a while...

The big deal is whether or not Bugatti does a sub-Veyron, otherwise an "affordable" sportscar for the $300K range.
 
I have another question, that I thought of while driving home from my bro's place. Can the air flow meter (or whatever it's called, the thing between the air box/filter and the intake track) on Nissan's RB30 engine be tweaked for better performance/power? Also, are the air flow meters different between different applications of that engine? (standard Skyline, performance Skyline, VL Commodore) The reason I asked, is because I just bought one that just happened to come from a shiloette (sp), and it also has the plug covering the screw removed. Never in the time I have had this car, has it had so much poke, 100-140 in 'not a great deal of time' whereas before it used to get to 120 and start to run out of puff.
 
Can the air flow meter (or whatever it's called, the thing between the air box/filter and the intake track) on Nissan's RB30 engine be tweaked for better performance/power?

Not really, but yes kinda, fiddling with the air flow meter can change fueling of the engine but normally those sort of tweaks are done by programing the ECU. Fiddling with the MAF sensor is risky.

, are the air flow meters different between different applications of that engine? (standard Skyline, performance Skyline, VL Commodore)

Yes they can, I am not sure about VL RB30 compared to R31 RB30 but I know MAF sensors vary in other Nissans quite a bit, for example series I and II R33 Skyline MAF sensors are slightly different.

The reason I asked, is because I just bought one that just happened to come from a shiloette (sp), and it also has the plug covering the screw removed. Never in the time I have had this car, has it had so much poke, 100-140 in 'not a great deal of time' whereas before it used to get to 120 and start to run out of puff.

Maybe your old one was giving incorrect readings to your ECU, but a word if caution often engines run rich at WOT for safety reasons and do gain performance when leaned out a little take note of any pinging, although being a NA engine there is much less risk. Anyway have fun with the extra poke, its always nice to gain performance. 👍

Is it true that sniffing too much exhaust fumes can kill you?

Yes, many a Hari-kari has been commited this way.
 
After seeing Duke post the six wheeled Tyrell F1 car from back in the day, I began wondering what other applications this has been used in, I remember reading something in RandT or CandD about a concept for a six wheeld high performance car. What are the pros and cons for this layout? Heres what I came up with
pros
better aero (is it really that big a difference?)
more contact patch up front
more steering force
cons
more rolling resistance?
more complex front suspension/steering systems
being laughed at by all the other F1 cars
 
After seeing Duke post the six wheeled Tyrell F1 car from back in the day, I began wondering what other applications this has been used in, I remember reading something in RandT or CandD about a concept for a six wheeld high performance car. What are the pros and cons for this layout? Heres what I came up with
pros
better aero (is it really that big a difference?)
more contact patch up front
more steering force
cons
more rolling resistance?
more complex front suspension/steering systems
being laughed at by all the other F1 cars
The other major con was that they needed Goodyear to develop and produce small tyres. They weren't developed to the same extent that the other, normal tyres were. There is also more weight at the front due to 2 suspension systems.
 
Whats an Intercooler? Is it just a fancy name for a radiator, and why do turbocharged cars need them? Is it air or water that goes through them?
 
Whats an Intercooler? Is it just a fancy name for a radiator, and why do turbocharged cars need them? Is it air or water that goes through them?

Intercooler cools charged intake air on forced induction engines. As the air is rapidly compressed from the Super/Turbocharger it heats up, the most common intercooler (air to air) reduces the charged airs temperature, closer to the ambient airs temp that is flowing through the fins of the cooler (like the cars radiator except air going through the core instead of liquid)

Other types of intercoolers like water to air (like a heat exchanger), ice pack intercoolers and other little ways to increase the cooling (air to air with water spray or nitrous spray etc) but none of these are very common.
 
ahh, cheers.
The engine temp must increase quite a lot with a big intercooler in the way of the radiator I was thinking, are there other ways turbocharged engines stay cool?
 
ahh, cheers.
The engine temp must increase quite a lot with a big intercooler in the way of the radiator I was thinking, are there other ways turbocharged engines stay cool?

No, the engine temperature is usually fine, even with the intercooler in front. Remember engines have thermostats to regulate engine temp, so if the coolant temperature increases slightly the thermostat opens further to allow more flow hence the engine temperature remains the same. If thats not enough, larger and higher efficient radiators and even water pumps are available and lower temp thermostats are also available.
 
Why didnt we see the Zonda R at geneva?

and should this thread be stickied?
 
Which car is better in performance stock? Mitsubishi Mirage Cyborg HatchBack or 1998 Honda Civic Type-R EK? I can't tell. (Although I'm sure that the Civic Type-R is slightly better.)

EDIT: :lol: Sorry CCX for spelling your username wrong... Lack of sleep I guess. I finally got GT3 to work and I was up all night trying to gold all the liscense tests. Wow I'm determined...
 
You guys want this thread stickied but yet you mess up the title by plastering your usernames in it...
 
You guys want this thread stickied but yet you mess up the title by plastering your usernames in it...

Ok I fixed it now. :grumpy:👍 Can't we have a little bit of fun? :dopey:


Now back on topic: What causes cars to make some scraping sound from thier engines from medium to high RPM's? I hear it all the time. (Nope, none of the cars I drive make this creepy sound... :nervous: )
 
Ok I fixed it now. :grumpy:👍 Can't we have a little bit of fun? :dopey:


Now back on topic: What causes cars to make some scraping sound from thier engines from medium to high RPM's? I hear it all the time. (Nope, none of the cars I drive make this creepy sound... :nervous: )

Maybe the sound of the increased volume of air? what sort of scraping?
 
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