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It's really close though, so that's a good guesstimate. It may be within 100-200 rpms, not counting different tire sizes...

Could you just do this: (4.30/3.73) X current cruise rpm = new cruise rpm ? (or sub in 3.90 for 3.73 if that's your current rear end)

What about chamfering/radiusing the spark plug hole? Would this help flame propagation?

I'm looking for some expert advice on matching shocks to springs for a custom coil-over build. My spring rates are probably going to be 650lbs front and 475lbs rear. The shocks I'm looking at have these two curve options, but I don't know what I'm looking at when I see a shock dyno graph...

Pretty much as I described, giant powered chisel machine. Linear cutting. Super old-school, like DC Tig welding with Helium! Never used one but we had one in my school when I was doing my pre-apprenticeship. (This pic is from wiki.)

I think the resistance you're running into is that you're putting all this effort into antique tech, and we just don't get it. It's like you're posting about cutting (terrible) keyways in a shaft with a shaper (kind of like a one-ton powered chisel), when everyone has been using vertical mills...

I personally don't know enough to call you completely wrong on the DC aluminum welding. I know that TIG/GTAW is a very old process and it's possible that way back in the 'Heliarc' days it could have been done with DC. But these days it is not the case. You will be fighting an uphill battle...

Maybe he's talking about the cleaning effect you mentioned? Cause if he's confusing shielding gas with current types he's got some bigger problems...

^ I think that is the DCEP (DC electrode positive) /DCEN (DC electrode negative) difference. But I'm not the welder. I was looking at a Tig for home and got excited when I saw the Miller Maxstar specs (and price). I asked him about it, and he said since it's DC only, I couldn't do aluminum...

All day long: Guy I work with who does this says AC only for aluminum.

Is it an AC/DC Tig machine (Miller Synchrowave for example) or DC only (Miller Maxstar for example)? You don't weld aluminum on DC. You also use different tungsten types and shapes than steel. If you don't have AC, don't waste your time on aluminum.

DC Tig aluminum?

It's been out for a few weeks in Canada. Hard to find maybe because Chapters and Superstore only seems to have one or two copies, and Duane's been buying them up. (I bought him his first one, two weeks ago.)

This would probably be a one or two off experiment with free material. How hot do you need to get the Lexan to form it? And could you use a fiberglass mold-release wax, or would it get too hot for that?

Sometimes we pitch targa-size oddly cut up pieces of Lexan at work. (some are 1/4" thick some are 1/8") I've heard you can thermoform it in a big enough oven over a mold. Maybe with a heat gun over a smooth-polished fiberglass form? You want to experiment, Dave? The shop's in Richmond. I...

Buddy/Tenant.

Bronze 17" TRD's <---- :)

Stage 3 2JZGE (IS300) and stage 3 2JZGTE (Supra) are almost identical. They're both 272s. They both have the same lift. Duration @ .050" is 1 degree more intake, 1 degree less exhaust for the GEs. But it says at the bottom of the GE chart: "No valve timing events due to variable intake...

Hmmm... Screaming in that white beast, eh? I for one did not scream. Here's my story: Duane not having driven anything but a Yaris is ages + taking me for a spin in the Supra + forgetting that hitting boost in 3rd gear in traffic is not a good idea + retarded driver not looking before...

How about you sport some race gas for the next video?