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Feb
5
comment Fuel efficiency and Shifting/RPM
@Leliel what that means is that you are driving on the street with track gearing. If the gears were compressed down into the range of street speeds, acceleration would be even higher.
Feb
3
comment What's the Purpose of Park on an Automatic Transmission?
@JPhi1618 I park with the transmission in park and pull the brake every time. Belts and braces: I really don't want the car moving at all until I'm ready.
Feb
1
comment Difference between OBDII and CAN
I like the idea of a computer that comes with tires for free. ;-)
Feb
1
comment What is a Blower?
A couple of points are glossed over above: the fuel system has to be both able and willing to provide more fuel (many NA ECUs won't have native code for how much fuel to add in a boost situation). The heat of the compressed charge is also a problem (probably requiring even more fuel to prevent detonation)
Jan
22
comment Steam Engines - What are these things?
This question is awfully broad. Are you including steam turbines? If not, why not?
Jan
21
comment When is a cold air intake system beneficial?
@IhavenoideawhatI'mdoing those are interesting questions that we would have to investigate on a car by car basis. These are measurable quantities, though. The WRX was well known for frustrating early adopters who wanted to try the intake, header, exhaust standard set of upgrades. Spend a lot of money, install and zero real impact on performance on a dyno. Proof by existence. A tune is required to make use of the extra air.
Jan
15
comment Why do 5- and 6-speed transmissions typically need different gear ratios?
@MichaelS, correct - you've exposed the weakness of answering questions on the phone.
Jan
15
comment Why do 5- and 6-speed transmissions typically need different gear ratios?
My WRX is a 2004. Our gear ratios are basically identical and I was think the same thing coming down the bridge on the way to work. Shifting up from fifth would put me in reverse, though, so that would be bad. ;-)
Jan
15
comment Why do 5- and 6-speed transmissions typically need different gear ratios?
FYI, the STI transmission has two "overdrive" gears: fifth and sixth are both lower than 1:1. However, they're also both taller than the WRX fifth gear
Jan
14
comment My subaru legacy will not boost
Are all the hoses connected to the turbo and waste gate? Do you have a boost gauge? Is it reaching boost?
Jan
12
comment What does a flywheel do and what is it connected to?
Replace all "weight"s with "mass". "Kinetic energy" --> "rotational inertia".
Jan
11
comment What is regenerative braking and why don't we use it?
@DucatiKiller thanks. Fixed
Jan
9
comment How to increase horsepower?
Yes. We're happy to discuss really open ended topics like this in the chat. In the Q&A section, we're trying to pose questions that have a real answer. For example, if you were asking "Should I run 10+ PSI of boost on a 10:1 compression ratio engine?", we would say "probably not without doing a lot of extra work."
Jan
9
comment How to increase horsepower?
Without more specifics, this question is close to unanswerable. Some "bolt-ons" will destroy one engine while another will be much happier. The only trick to increasing the power to weight ratio that works for every car is to remove weight in the driver's seat.
Jan
8
comment What would be the best and cheapest way to fix these dents and scratches?
FYI the dents don't appear to be in the gas tank. That may confuse the OP.
Jan
4
comment Brake fluid leak after recent brake line replacement
You might want to tell the class what this "device" is called.
Jan
4
comment Cheap vs Expensive Fuels
This question and the commentary associated with it are edging very close to opinion-based and / or shopping advice. I'm not seeing enough hard data to make it sound like this question is answerable as written. More specificity is required, at a minimum.
Jan
1
comment What makes a worn car shock spongy and soft?
Okay I see it now.
Jan
1
comment Can I buy a used car to learn auto repair & DIY?
Indeed. There are many low risk modifications and tasks you can learn to perform on your current vehicle. Oil changes are a good start: you end up under the car looking at many important moving parts. The chat is also a great place to ask "is this a good idea?" before you dig too deep a hole. ;-)
Jan
1
comment What makes a worn car shock spongy and soft?
I don't see a spot where you say something to the effect that sometimes oil shock leak. When I swapped out two of the old Outback shocks back in the day, all the oil was basically on the outside of the tubes. I could compress them with one finger!