2,189 reputation
511
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location United States
age 31
visits member for 3 years, 5 months
seen Jan 18 '13 at 19:19

Sep
23
comment What are the tradeoffs for positive vs. negative ground?
Agreed lightning isn't a perfect example, talking about way higher voltages then we are dealing with, but I thought it would be close enough and a universally understood example. The light bulb and two batteries example doesn't seem good to me as I can see the positive side of a battery working connected somewhere else but not necessarily the negative. Out flow of electricity from the positive seems a lot more plausible then in flow of a limited capacity device.
Sep
20
comment Hard shuttering and engine dies when A/C is on at idle
Heh, expensive repair, enjoy the new ride.
Sep
16
comment How To Tell if a Pulley Not Attached to the Engine Is Bad
What were the symptoms? In what way do you think it is bad? Not rotating, out of balance, slipping?
Sep
16
comment What are the tradeoffs for positive vs. negative ground?
I just thought of what might be a great example of what I'm talking about. A Lightning strike! When you get a strong enough positive charge in the sky it jumps to an available ground, in this case the earth. This isn't a cyclical circuit where it leaves the cloud to somewhere else and then goes back to the cloud. It leaves the cloud and goes into the earth, from a positive to a negative.
Sep
16
comment What are the tradeoffs for positive vs. negative ground?
Could be wrong, not an electrician, but connecting positive of the battery to any negative ground sure seems like a circuit to me. With a vehicle it has to wrap back to the battery because the whole vehicle is isolated from another ground by the tires. We are talking about the flow of electrons, they want to move from the positive to the negative to create balance, they don't care if that the negative is on the other side of the battery, the ground beneath your feet or anywhere else.
Sep
14
comment Difference between “Hypoid” and “Limslip” oils
Yes, I think you are too, especially because the diff is going to be made out of harder metal than the synchros, but I felt it worth stating as there are instances where using a "newer better product" can cause harm to older systems. This happened with the introduction of ethanol into gasoline also, caused issues with fuel systems that weren't built to handle it.
Sep
2
comment Which will have longer lifespan: stock or urethane bushings?
@Bob, agreed, it sounded pretty crazy to me when I read it in the steps on how to replace the bushings on my car. Even though there were photos showing the steps too. Then when a group of guys from the car club were doing someone's set of bushings, this was done. Really though, a little gasoline fire on a steel LCA, long enough to melt some rubber, probably not hurting the metal. Just make sure to have a fire extinguisher handy!!!
Sep
1
comment How to determine the compressed height of a spring?
@Brian, I was thinking about your scale suggestion and the issue I'm seeing there is it'd be measuring the unsprung weight also (LCAs, axles, wheels, rotors, tires, etc). I'm not sure if there is a truly accurate way to get your cars precise sprung weight without some work involved.
Aug
31
comment Which will have longer lifespan: stock or urethane bushings?
One option for bushings that aren't easily removed (I know this sounds a little crazy, but I've seen it specified several times) is to burn them out. You burn the rubber and then clean out the remaining.
Aug
24
comment How to determine the compressed height of a spring?
Thanks, that was what I wanted, I figured I had the right data just which numbers to apply against each other. In my case, looks like using the 88SS's would add about .34 inches (taking into account my reduced weight) to the front but the rear will be only a .022 inch increase. I guess if I get the custom rolled springs I'll have them adjust the fronts a bit.
Aug
23
comment Forced induction and engine braking
Agreed, you get plenty of engine braking on a turbocharged engine, my 3.0L I can engine brake from 70MPH to a near stop in the course of coming off the freeway, along the ramp and up to a light. As stated, 1.4L just isn't much resistance to a 3,000lb car. Plus automatics give less engine braking than manuals.
Aug
20
comment What would be the most likely cause of engine sputter?
Please give more detail on if this happens after cold starts, warm starts or both. In what kind of ambient temperatures (I know right now it is hot, but for the sake of the future readers, give what temp ranges you are dealing with). How long ago were items replaced such as spark plugs, fuel filter, etc.
Aug
10
comment Car starts fine after sitting for half a day but has trouble immediately after being driven
Yeah, I track my mileage on every tank as it is often a good indicator of "somethings wrong" if it changes wildly with no good reason. The belt was already like that when I bought the car, I was just doing it for good measure, afterwards I saw my average go up about 2 MPG.
Aug
10
comment Car starts fine after sitting for half a day but has trouble immediately after being driven
You should provide information on any service besides the thermostat that has been done recently. Oil, spark plugs, wires, battery, fuel filter, distributor, etc. Since it has been sitting, we can't assume you have done these items in recent times and they could be affecting operation.
Aug
8
comment Is there any way to determine when a water pump will fail?
Also, you may not completely fail and just skip a couple teeth on the belt. My engine was like that (although I think it was dealer error on install as the belt was in good shape), I was off by 2 teeth on one gear. After correcting, I've recorded about a 2 MPG increase (from 20-21 to 22-23 MPG) on my car which pays for the parts after about 6 months (did the work myself so no labor).
Aug
8
comment Is there any way to determine when a water pump will fail?
@Brian, a little searching around sounds as if Toyota has both, just depends on the engine. My answer was more to the generic cover all. Yes, if you find that you have a non-interference engine you could push it but still doesn't seem like a good idea. It is only every 60-100k miles and is costly to do, so you are better planning ahead for it instead of having to pony up the cash the moment it lets loose.
Aug
8
comment Is there any way to determine when a water pump will fail?
As Bob mentioned, Timing Belt and Water Pump should be done together. Timing Belt you can't wait till it breaks, you have to do it as preventative maintenance so you don't mess up your engine (bent/broken valves). The water pump is going to be right there in the middle of all the timing belt work, so why not spend the extra $50-100 to replace it then instead of paying hours and hours of labor when it starts failing. Plus, good luck replacing the water pump without getting coolant on the timing belt, which then you are supposed to replace the belt.
Aug
3
comment Bent radiator fins — how many is too many?
Anti-Freeze has poor thermal transfer properties compared to water so the straight anti-freeze would definitely be an issue. Getting 50/50 mix in your reservoir doesn't mean your system is at the proper ratio and you haven't flushed, so I'd agree with Rory and say flush it (with an actual flushing agent, not just empty and refill. The bottle will give you the steps but its essentially empty, run with flush, empty, run with water, empty, fill with 50/50).
Aug
3
comment Bent radiator fins — how many is too many?
There is only a filler cap on the radiator, not the condensor. I'm referring to the front shot you posted with the bent fins though. On my car, from under the hood you can tell you are looking at the radiator, the hoses are running right into it. When you look through the front bumper, you think you are looking at the radiator, but the condensor is mounted in front of it.
Aug
3
comment Bent radiator fins — how many is too many?
Also, that may not be your radiator actually, it could be your A/C Condensor which looks just like a radiator but can be mounted in front of the radiator.