Evans applied for a patent in July of 1992, citing foundational innovations he had patented in 1985. He presumed that the payoff covered only the work that he had done for GM, not the rights to his ideas. Reverse flow cooling vs standard flow. They bolted the turbo where the carburetor used to be, and from there the compressed air splits to the carburetors on either side of the engine, and exhaust exits out the hood via a rusty soup can. The vented-reverse-flow cooling system was ruled to fall under earlier agreements, even though GM hadn't explicitly demanded that Evans develop the tech. Keep in mind that while the intake manifold is normally bolted to the intake, in the reverse flow application "our fabricated intake manifold is bolted to the original exhaust ports and the exhaust manifold is welded to the ¼" plate steel intake. "
Traditionally, the inlet valve is situated to the left of the cylinder, with the exhaust valve found on the right. KITT222 last edited by. Favorite caption: first car to 200 mph in the 1/4 mile, no parachute, drum brakes all the way around... when men were men. I think you'd just have to run the engine counter-clockwise. When John heard Cob's idea for the reverse flow induction engine, aptly named since its air intake is in the rear and exhaust in the front of the car, he immediately jumped on board to help make it happen. Does someone make a conversion kit? The body itself required several additional alterations. The decade-long legal battle. Reverse flow small block chevy engines. He served as a regular consultant for GM engineers who visited the track to see how racers were using their creations. Part of that evidence was fabricated in an elaborate hoax. The engine pictured above is the only color photo of one I could find, and it seems to have been built as a demonstration of what reverse-flow engines can do. If you were gunning for HP numbers it made more sense to let the denser intake air suffer and use the nice open intake runners to flow the exhaust. © 2022 Stance Is Everything. In 1992, GM introduced the LT1 engine, a revolutionary new 350 CI small block to be used in all its rear wheel drive vehicles.
If you can get ahold of that torquey L98 tuned port injection, it would be fantastic in a truck!! Short neck (5 5/8") style pump. They ran the heater hose to the water pump in the same location as an older small block. The car already had a Chevy rear end with hydraulic drum breaks in back. A nice cold intake makes the air dense, meaning more can be crammed into the cylinders which creates more power. Did GM steal the innovation that made the LT1 possible? The decade-long legal battle. Chevrolet's LT1 V-8 was a major step forward for General Motors. Location: daytonabeach.
Evans' lawyers confirmed this by finding, on the faked sketch, an imprint of a date that had been written on a sheet of paper laid over the sketch. They designed the car to start by turning the key switch, then pushing a button knob. He let General Motors become his sole client, and while the trackside conversations were great for securing potentially high-paying development work, it was easy to get comfortable. A reverse-flow head can also make an engine much cheaper to make, as the intake and exhaust manifold can be cast as one lump of metal rather than splitting them up to be placed on either side of the block. And seeing the technology still being used in racing and road car applications, the heyday of the reverse-flow engine may still be yet to come. Location: King City, Ontario, Canada. These steam pockets were problematic enough that GM's engineers sought expertise from one John Evans, founder of Evans Waterless Coolant. Reverse flow small block chéry lès. While the contractual argument was muddied by the casual nature of the two parties' business relationship, another critical component was General Motors' claim to have designed its own reverse-flow cooling system, pinhole steam vent included, a year prior to that 1989 hot-tunnel test. "After driving 300 miles to Wisconsin to pick up the car, I realized the frame was scrap and I would have to build a new one. John tells me his favorite moment in building the Reverse Flo, was the first time she fired up. The timing of the steam-vent discovery, along with the gap between Evans' awareness of the violation and GM's launch of the LT1, was hotly contested in the trial. One sweet street rod, that's what!
"We enlisted Barry Cam Company in Lester Prairie, Minnesota to build a cam with repositioned lobes that worked to alter the valve timing. " In a cross-flow head, the swirl of the intake air has to cross the cylinder head which reduces the quality of mixing and the scavenging efficiency during the exhaust stroke. Evans scoffed at the offer, and GM returned months later with a counter: $150, 000, but no rights to his designs. Evans didn't win the lawsuit. It might make sense if you were using a turbo or spray, where you need all the EX flow you could find. Can you use reverse flow serpentine on standard small block. The judge acknowledged fraudulent evidence but cited the two parties' various intellectual-property agreements through the '80s.