Recent content by TMac

BMW has Valvetronic- which provides adjustment for valve duration and lift in combo with variable valve timing. Ford only has the variable timing. That's the main difference in mileage.

Just an FYI, platinum is 50 times more resistant than copper, so I would expect platinum to gapped more tightly. Uses of platinum, iridum, ruthenium, etc are skewed towards longevity rather than any performance benefits. Using copper and experimenting with as wide a gap as possible without...

An extra .030" is way too much. The "spark kernel" has nothing to do with the heat range of the plug. If you're of the mind that a colder range plug is necessary buy them. But it's not needed, especially if you're running any type of ethanol blend like E30. A simple explanation.

Air/water intercooler is inferior in every way to an air/air cooler UNLESS- you have some way to chill the water below ambient air temps. As far as an intake manifold goes, the stock manifold doesn't have any glaring problems. Increasing the plenum size or changing the manifold runner length...

For those of you who read my posts earlier, I made a mistake in the first post. I had put the Tesla "Y" battery pack with 81 kwh at 771 lbs. In fact it was 771 kilograms, or 1700 lbs. Makes the point about electric not being remotely useful in long haul trucking even more convincing. It...

One might argue that in the US, only 65% of electricity is generated by fossil fuel. Even so, if we calculate that percentage by the electricity needed, we'd still be measuring around 580 million gallons of diesel- vs 480 million gallons of diesel in the non battery powered semi trucks. So...

So, if you've done the math, we'd need approximately 5.6 million * 770lbs of cobalt = 4.36 billion pounds. Worldwide cobalt production? 440 million lbs. So only about 10% of the cobalt needed. Manganese- no problem. As discussed, lithium = 5.6 million * 500 lbs = 2.8 billion lbs. World wide...

You can do the math on your own about the amount of lithium, cobalt, and manganese that would be necessary, but think abut this: The entire US grid in 2023 produced around 4.18 trillion kwh. Just those semis on eight hour shift would require over 11.2 billion kwh. Over one year, 11.2B * 365 =...

There are some assumptions: First, a modern diesel tractor (per federal law) can weigh 80,000 lbs total. Of that amount, 42-48,000 lbs of cargo. It requires an average of 225 kw to move a full load down the road at 65 mph. So, for an 8 hour driving shift we'd require a battery pack of at...

If you think of a car as a transportation tool, there is nothing wrong with an EV. If you are a urban or suburban driver who commutes a short distance back and forth to work, it's an ideal machine assuming you have a small battery pack and can plug it in at home or work. Of course, you'd have...

You can do a site search for "piggyback" systems. JB4, AFE, etc. Here is one of my posts on the subject that is relevent. Read the entire thread if you wish.

I don't know what you read, but if you're not using ethanol, there is absolutely no HP benefit to a fueling upgrade on stock turbos. But if you want to lighten your wallet, go for it.

If you're running 94 octane gasoline, why upgrade at all? You would only need an upgrade if you were planning on using more than a 50:50 mixture of ethanol.

It's not a "pissing competition". Any criticism you feel you're experiencing isn't "inaccurate". If you want to do something that raises IAT, adds weight, lowers efficiency, incorporates more failure points and introduces parasitic losses (pumping water isn't free) you're free to do so. You...

You're not getting the reply you want because it's pointless to use an air/water setup.