Taking Bets!

[L92 OLDS]

**not saying you’re claiming ridiculous numbers like the guys who say there tbi 350 with duelos heads and an even cam make 587hp** But, Something isn’t right in that chart, horsepower and torque ALWAYS cross at 5252. Can’t change. Torque is measured with a strain gauge horsepower is a mathematical equation of torque times rpm divided by 5252. There’s no way hp and tq can cross at 4600 rpm without manipulation

Interesting. I've never realized this. Mr Sony, you better go get your money back. The numbers are bogus.

 

[500/600]

**not saying you’re claiming ridiculous numbers like the guys who say there tbi 350 with duelos heads and an even cam make 587hp** But, Something isn’t right in that chart, horsepower and torque ALWAYS cross at 5252. Can’t change. Torque is measured with a strain gauge horsepower is a mathematical equation of torque times rpm divided by 5252. There’s no way hp and tq can cross at 4600 rpm without manipulation

HP always equals TQ at 5252rpm on an engine dyno. It is a value common to their calculations. I never thought about whether that was true on a chassis dyno, but I would have assumed that it was.

 

[500/600]

HP always equals TQ at 5252rpm on an engine dyno. It is a value common to their calculations. I never thought about whether that was true on a chassis dyno, but I would have assumed that it was.

Nevermind. Here is my dyno pull on my Dodge Magnum. Dead equal at 5252rpm on a chassis dyno.

 

[mccormack944]

Ok, now that I have stirred the hornets nest I looked back at the graph...the graph printed out goes against every rule of plotting lines I have ever been taught and has one different y axis scales on the left and right sides of the graph one for hp one for torque and that’s what is causing the incorrect crossing of hp and torque , so it may very well be accurately plotted but the relationship of the hp and tq curve are useless on that graph, I guess I didn’t give it a long enough look at work to realize that so I’ll take the blame for that, I’ve just never saw a dyno chart with a separate scale on either side for hp vs tq as you can see on 500/600s sheet

 

[500/600]

He never made it to 5252rpm. I have no idea why it crossed at 4600-ish?

 

[mccormack944]

He never made it to 5252rpm. I have no idea why it crossed at 4600-ish?

If you look at the left side of his graph the scale starts at like 240 and is used to plot torque at the right side the scale starts at like 140 and is used to plot horsepower. Therefore let’s say 250 pounds of torque would be lower on the graph than 250 horsepower causing the graph to show a cross even though the numbers didn’t converge

 

[500/600]

Don’t the secondaries take like 30 seconds to adjust?

I’m thinking of a Thermoquad.

 

[SSpev]

Torque in lb-ft = HP AT 5252 RPM you guys missed the point. The graph can be ANY scale. The lines do not have to cross. ALWASY TQ= HP at 5252 IN english units. Look a t a big truck diesel. They never get to 5000 rpm. They are 600 HP at 1800 rpm and 1750 lb-ft at 1800rpm

 

[500/600]

Torque in lb-ft = HP AT 5252 RPM you guys missed the point. The graph can be ANY scale. The lines do not have to cross. ALWASY TQ= HP at 5252 IN english units. Look a t a big truck diesel. They never get to 5000 rpm. They are 600 HP at 1800 rpm and 1750 lb-ft at 1800rpm

And if that diesel makes it to 5252rpm the lines will cross.

 

[pontiacgp]

MrSony, you said the guy told you the secondaries didn't open till 4,300 rpm. I don't see that in the graph, if the spring was too tight and the airvalve would not open the engine would studder......