Don Terrill’s Speed-Talk

Yer, Chevrolet worked it out after several decades, that's how we got the reverse cooling system LT1. Get enough capacity and air to keep the old girls around 180 degrees and you may not pass an emissions test but it'll go forever without needing crazy 24psi caps or anything stupid to stop steam po...

In reference to controlling air flow thru the radiator. Put the fans at the front of a duct . When you don't want air flow run the fans in reverse. Don't know if it would work but I was watching in car video of Jimmy Johnson flipping switches on the straightaway and this ideal came to me. But grill...

Thanks folks! This was honestly a rhetorical question and one that I run into every once-in-a-while and I didn't see a good discussion thread here on ST addressing the "just drill all the head gasket holes as big as possible" idea directly. Good to just see everyone's thinking and honestly, fun to p...

Robban 54 wrote: ↑Sat Aug 06, 2022 4:09 pm When driving slowly, just start and stop the electric fan. But at 60 mph you have to throttle the air flow. With some kind of damper.

Modern OEM-style electrically operated grills that can be opened / closed dynamically and controlled by the ECU?


Adam

It is for distributing coolant flow evenly/ directing it to where it's needed most like exhaust side of head, siamesed exhaust ports need priority. But just LOOK at how tiny those holes are on the intake side; how can that be good for cooling / flow? cometic gasket drill.jpg Next you'll be telling ...

Go for it!! What do those GM engineers know anyway. "Grumpy Jenkins showed that he had more smarts than a whole STACK of GM engineers!" "The world of engineering achieved perfection with Grumpy Jenkins; it's only been downhill since then. Just think about how much further along internal combustion ...

englertracing wrote: ↑Fri Aug 05, 2022 6:28 pm It is for distributing coolant flow evenly/ directing it to where it's needed most like exhaust side of head, siamesed exhaust ports need priority.

"But back in the 60s and 70s, when people just LEARNED BY DOING, they did this "and it worked"!"


Adam

OP newbievetteguy In your post elsewhere, It seems you're seeking 1:1 alum sbc pulleys. speedway motors and other circle track suppliers have aluminum sbc crank-water pump pulley sets that are 1:1 ratio https://www.speedwaymotors.com/SBC-Aluminum-Pulley-Set-1-Groove-Upper-2-Groove-Lower-Short-Pump,...

Yes, I've searched and I've read through a great many threads about improving engine cooling and cooling mods already. What I don't have is a good answer to why just taking a head gasket and drilling out all the small holes bigger doesn't result in more coolant flow and therefore more engine cooling...

What is the area ratio a ratio of? The squish area to the total bore area. What is the relationship between knock tolerance, SqV & compression ratio for a given octane fuel? As the squish velocity increases to a squish velocity "speed limit" (15-20 meters / second or 28-30 meters / second in some e...

One more thought popped into my head: If cavitation is created by increasingly low pressures on the low pressure / inlet side of the pump that reduce the boiling point, wouldn't an increased radiator outlet to pump inlet diameter / increased liquid volume between the radiator and pump decrease the v...

Quote: "I'd think that the EWP150 would increase the pressure on the inlet side of your mechanical pump to help keep cavitation at bay a bit longer because the increased pressure on the inlet side of the mechanical pump means an increased boiling point." Thanks Adam- exactly the information I was l...

Here's a little nugget for thought from Stewarts site and falls in line with I have always thought. The old wives tale about coolant flowing too fast causes overheating since it isn't in the engine long enough to absorb heat kind of goes POOF! " Higher coolant flow will ALWAYS result in higher heat...

Just to keep this all in one place, came across an interview from 2001 with Jim McFarland where he addresses many of the items brought up in this thread directly. Coolant flow speed, some allusions to Smokey findings, why Winston Cup teams and Circle Track racers use AN lines, how some head mfgrs ha...

Yes. I have a crank trigger wheel so I've already had to space my pulleys and have shims for the water pump and an adjustable bracket for the power steering pump. The problem according to CVF is that the distance between the grooves are different in "Corvette" SBC pumps vs. short or long pumps, so ...