DanielC Posted December 10, 2014 Report Share Posted December 10, 2014 I had my first Datsun 521 in the early 1970's. I was taking automotive classes at a local community college then, Of course, most all the other students were into V-8 muscle cars, and I admired them too. I got a lot of crap for my Datsun. "Tiny gutless engine" they said. "Only 96 Hp? But everybody thought in cubic inches. CC was a foreign measurement. But when they were told 1600 CC = about 97 cubic inches, Many of my co-students quickly figured out, one HP per cubic inch? On a stock engine? "I wish my V-8 had one horsepower per cubic inch, stock from the factory" Yes, a pushrod V-8 is an old engine design. Especially with two calves per cylinder. What would a LS Chevy engine produce, without fuel injection, without computer controls, without a knock sensor? An engine is just an air pump. More air, more fuel. The air is the limiting factor. One advantage of gasoline, especially on a fuel injected engine, is this. As the intake valve is opened, and the injector squirts fuel, it can put gasoline partially in a liquid form in the cylinder. Liquid gasoline takes up less volume than gasoline vapor. More room for air, more fuel can be used, more horse power. With propane, or butane, the fuel is a gas at room temperature. Prop driven airplanes used huge displacement engines because the RPM of the engine was limited by the propeller. More horsepower, bigger propeller. At some point, the tip speed of the bigger propeller exceeded the speed of sound. Then the propeller became less efficient. Gear reduction was extra weight, and more parts to break. 1 Quote Link to comment
DaBlist Posted December 10, 2014 Report Share Posted December 10, 2014 Fuck yeah. My car made 1440HP Peak power when stock! I like science Is this a measurement of energy when hitting a really solid object and a high rate of speed? Quote Link to comment
datzenmike Posted December 10, 2014 Report Share Posted December 10, 2014 For peak power please use the NOx button. Quote Link to comment
DaBlist Posted December 10, 2014 Report Share Posted December 10, 2014 the concept is the same, not the technology Yes it's old school tech, but it's really nice to only need to buy one cam when trying different combinations and in this case simpler also means smaller and lighter than a DOHC version would be. If life was about having the latest and greatest this forum wouldn't exist Quote Link to comment
datsunfreak Posted December 11, 2014 Report Share Posted December 11, 2014 If life was about having the latest and greatest this forum wouldn't exist Man makes a good point... But this forum isn't about Chevy V8s either... ^_^ Quote Link to comment
datsunfreak Posted December 11, 2014 Report Share Posted December 11, 2014 What would a LS Chevy engine produce, without fuel injection, without computer controls, without a knock sensor? It's been known to happen. And still make pretty impressive numbers. Obviously still needs a black box to control spark... 2 Quote Link to comment
MikeRL411 Posted December 11, 2014 Report Share Posted December 11, 2014 What would a LS Chevy engine produce, without fuel injection, without computer controls, without a knock sensor? Smog. 2 Quote Link to comment
DaBlist Posted December 11, 2014 Report Share Posted December 11, 2014 What I like about the LS is that you get so much from so little. It doesn't need 32 valves, 4 cams, and all the guides and tensioners to control ten miles of timing chain to make all the power I could ever need. I have no problem with Ford V8's and for some V8 swaps would prefer one but when they make kits to put the LS in Fox body Mustangs that says a lot for the LS. When it comes to Bang For The Buck this time street sense wins out over engineering school 1 Quote Link to comment
Fat510 Posted December 11, 2014 Report Share Posted December 11, 2014 http://youtu.be/5OS_k0V8Bvw 2 Quote Link to comment
paradime Posted December 11, 2014 Report Share Posted December 11, 2014 Mechanical "horsepower" is equivalent to 745.7 watts of energy output. When mechanical power output was first being measured, horses were the common unit of power of that age. Naturally the horse would be used as the standard unit of measurement. The only issue being, the actual power output of a horse is a totally arbitrary measurement when you consider not all horses are equal. The first video was very impressive. Serious horsepower! The second one made me feel weak. There in lies the Yin and Yang of the equestrian experience. To find proper Datsun balance, my inner Chai tells me I should restore a stock 521. I know my low hang'n Yang will never let that happen though. It will over ride my yin and I'll do a KA swap anyway. This is my true nature. The stories behind all these measurement terms we toss around are actually really interesting. http://en.wikipedia.org/wiki/Horsepower http://en.wikipedia.org/wiki/Torque http://www.epi-eng.com/piston_engine_technology/power_and_torque.htm Quote Link to comment
paradime Posted December 11, 2014 Report Share Posted December 11, 2014 This guy reminds me of my 9th grade Auto Shop Teacher, but he does distill a ton of information into a soundbite format No one tell Smoke this clown uses the term Turbo lag. He gets really pissy when he hears that. 1 Quote Link to comment
Burabuda Posted December 11, 2014 Author Report Share Posted December 11, 2014 3 Quote Link to comment
JoeCool Posted December 12, 2014 Report Share Posted December 12, 2014 I don't care how much power it has potential to make, the biggest problem I have with GM's LS engine is it is hideously ugly! If I were to abomination engine swap anything, the Ford Coyote V8 would be my choice, this is a sexy beast! Especially in the GT500 configuration... Let alone something like this! Or this... 3 Quote Link to comment
datzenmike Posted December 12, 2014 Report Share Posted December 12, 2014 Especially in the GT500 configuration... I drove this one in this configuration.... 2 Quote Link to comment
JoeCool Posted December 14, 2014 Report Share Posted December 14, 2014 That is just one of those things that makes one wonder WHY? 1 Quote Link to comment
cr83 Posted December 14, 2014 Report Share Posted December 14, 2014 cuz merica, why not? Quote Link to comment
paradime Posted December 14, 2014 Report Share Posted December 14, 2014 If a big truck is compensation for a small pecker, this guy has a vagina. 1 Quote Link to comment
nismo dr Posted December 14, 2014 Report Share Posted December 14, 2014 http://autoweek.com/article/car-life/12-rotor-wankel-engine-will-melt-your-brain 3 Quote Link to comment
paradime Posted December 14, 2014 Report Share Posted December 14, 2014 This us Unnatural and it must be stopped. What evil lair is this devil's work being done. I am being tempted by the dark side. On, get behind me satin. :angel: ... :crying: ...... :no: ... :sick: ... :w00t: ... :hyper: ... :angry: :devil: :devil: :devil: :devil: :devil: CONVERTED Quote Link to comment
cr83 Posted December 14, 2014 Report Share Posted December 14, 2014 that is insane, i wonder how much hp and torque it makes Quote Link to comment
datzenmike Posted December 14, 2014 Report Share Posted December 14, 2014 The intake and exhaust are insane and ridiculous looking. 1 Quote Link to comment
nismo dr Posted December 14, 2014 Report Share Posted December 14, 2014 "Garvin's R12 rotary engine does funny things to the concept of rational thought. It is entirely polished, weighs 830 pounds and fits in the space of a big-block Chevrolet V8. Displacement is 960 cubic inches. Its 12 rotors are nestled within three banks in a Y configuration: two banks on top, and one on the bottom. They are nothing short of gorgeous. The bottom bank has the output shaft; the two top banks help drive the bottom. All three banks are connected by gears. One bank counter-rotates against the bottom in order to match the exhaust side; the other rotates in the same direction as the output shaft. There are just 19 moving parts -- when you're speeding at an average of 78 mph across the Atlantic Ocean, you need all the reliability you can get. Let's talk power. That's always the fun part. Garvin can cruise the R12 around, for 400 maintenance-free hours worth of pleasure boating, with 1,400 hp. Add in a pair of turbochargers and that jumps by 1,000 hp. Add race gasoline and 25 pounds of boost, and that jumps to 3,600 hp. Double the boost and Garvin could potentially produce 5,000 hp, he estimates -- and if he drag races the thing, he could hit 14,000 RPM " 1 Quote Link to comment
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