Interesting video..... Check it out!
http://www.dragracingtv.com/vw/misc/chico-performance-engine-builder-showdown-part1-2006.html
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Interesting video..... Check it out!
http://www.dragracingtv.com/vw/misc/chico-performance-engine-builder-showdown-part1-2006.html
http://www.dragracingtv.com/vw/misc/chico-performance-engine-builder-showdown-part1-2006.html
Very cool dyno video!
Thanks for that link, Ernie!
Thanks for that link, Ernie!
I want 240 horses in my speedy!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Gabe
Gabe
Also, try......
http://www.dragracingtv.com/
.......And by the way, you can buy CB's winning 224 HP turn key motor for only $9,995! Hurry, there's only one in stock!
http://www.dragracingtv.com/
.......And by the way, you can buy CB's winning 224 HP turn key motor for only $9,995! Hurry, there's only one in stock!
Hey Ernie - cool video link. BTW, that's the view I get when I let my wife drive the Speedy!!LOL!
Peace - Out!
Peace - Out!
Ernie,
Great video. I read about this dyno challange and the results in HotVWs magazine. Neither the magazine article or video talk about correction factors or any calculations they have to do before they announce the Horse Power. There is mention in the video of "Better air last night". If they are doing any correction factors or checking those things before, during and after the runs, they should know.
The magazine article does mention that the owner,Dyno Don,adds his own hp correction factor because his Stuska dyno comes up with lower numbers than other dynos.
Jake Raby may be able to shed some light on this. He's familiar with dyno research and testing and how Hot VW's or whoever put on the "Dyno Challenge" does their correction factors to get the horsepower numbers they come up with.
So my question is this. In this "Dyno Challenge" was the 200 hp made by one of the engines really the same as the 224 hp made by CBperformances engine because his run was at a better or worse "air" day? OR are the numbers they come up with "Real" because they've bothered to correct for conditions at the time of the Dyno run?
Makes me say Hmmmmmm
Greg
Great video. I read about this dyno challange and the results in HotVWs magazine. Neither the magazine article or video talk about correction factors or any calculations they have to do before they announce the Horse Power. There is mention in the video of "Better air last night". If they are doing any correction factors or checking those things before, during and after the runs, they should know.
The magazine article does mention that the owner,Dyno Don,adds his own hp correction factor because his Stuska dyno comes up with lower numbers than other dynos.
Jake Raby may be able to shed some light on this. He's familiar with dyno research and testing and how Hot VW's or whoever put on the "Dyno Challenge" does their correction factors to get the horsepower numbers they come up with.
So my question is this. In this "Dyno Challenge" was the 200 hp made by one of the engines really the same as the 224 hp made by CBperformances engine because his run was at a better or worse "air" day? OR are the numbers they come up with "Real" because they've bothered to correct for conditions at the time of the Dyno run?
Makes me say Hmmmmmm
Greg
You are a bit off. The owner of the Shop is Jack Sachete. Dyno Don is an announcer at VW racing events. He is a legend in the VW community and was asked to MC at the event. As to our engines running in better air you are wrong. We all ran our engines on the same day with the same air. What you heard on the video was a remark I made about testing my engine the night before. I was only testing the engine. Yes it did make 4 more horsepower. The air at 3:00 am in Huntington Beach is an engine builders dream! A dyno is a tool. If one shops dyno is off from another, who cares? If I make a change to my engine and make ten more horsepower on my dyno, my engine makes ten more horsepower. If someone takes that engine to another shop and it makes ten less horsepower than I qouted, who cares? I have my baseline that I use based off my dyno.
Pat,
Thanks for the clarification. I was just interested in how the dyno numbers were calculated and converted to HP nos.
Here's why. If your motor made 224 HP on that dyno, then you took it home did some work on it, then a month later dynoed it again on the same dyno and it dynoed a coulple of horsepower less, would you conclude that your work on the motor killed some horse power, or would you question the dyno itself?
Greg B
Thanks for the clarification. I was just interested in how the dyno numbers were calculated and converted to HP nos.
Here's why. If your motor made 224 HP on that dyno, then you took it home did some work on it, then a month later dynoed it again on the same dyno and it dynoed a coulple of horsepower less, would you conclude that your work on the motor killed some horse power, or would you question the dyno itself?
Greg B
Regarding Horsepower, "It's just a number" The real source of power is torque. The word Horsepower was invented for people that could only relate to the work performed by a horse thus the word horsepower.
The ONLY way to get a horsepower rating is to measure the torque of the engine then convert that data into horsepower. The conversion factor is: The sum of Torque x Engine speed divided by 5,252 = Horsepower.
If, in your scenario, you measured your engines output using the exact same calibrated dyno under the exact same atmospheric conditions, at the same time of day etc etc etc and your HP or Torque ratings were beneath the previous readings, I would suspect the engine not the DYNO.
Remember, all of the claims made by component manufacturers are just that, ""claims"" Often time, just the simple act of changing a generator/alternator can cause a loss or gain of HP. Other things like bolting on ratio rockers can also cause both a gain or a loss of HP depending on its relationship to the other components in your engine.
The ONLY way to get a horsepower rating is to measure the torque of the engine then convert that data into horsepower. The conversion factor is: The sum of Torque x Engine speed divided by 5,252 = Horsepower.
If, in your scenario, you measured your engines output using the exact same calibrated dyno under the exact same atmospheric conditions, at the same time of day etc etc etc and your HP or Torque ratings were beneath the previous readings, I would suspect the engine not the DYNO.
Remember, all of the claims made by component manufacturers are just that, ""claims"" Often time, just the simple act of changing a generator/alternator can cause a loss or gain of HP. Other things like bolting on ratio rockers can also cause both a gain or a loss of HP depending on its relationship to the other components in your engine.
I found this article that answers my correction factor question.
(I remebered doing temps, but I couldn't remember what else we used to do before and after dyno runs. It was Barometer)
I didn't know that there was more than 1 SAE standard.
Greg B
http://www.land-and-sea.com/dyno-tech-talk/corrected-horsepower.htm
It was a Waaay long time (1970's) ago but back then I had a go-power dyno & a Superflow flow bench. I spent several years researching 40 hp motors. I saw lots of things that didn't make sense hp wise, and flow bech wise. The intake tract that had the best flow didn't always make the best hp. The best HP motor wasn't necessarily the fastest in the car.
Once at a SCCA National FV race, we loaned our test mule motor that made 40hp to a competitor(he blew his engine in qualifying) while the motor in my car dynoed at 50hp.
The 40hp motor that we loaned to the competitor won that race while setting a lap record at Riverside International Raceway.
Go figure.
(I remebered doing temps, but I couldn't remember what else we used to do before and after dyno runs. It was Barometer)
I didn't know that there was more than 1 SAE standard.
Greg B
http://www.land-and-sea.com/dyno-tech-talk/corrected-horsepower.htm
It was a Waaay long time (1970's) ago but back then I had a go-power dyno & a Superflow flow bench. I spent several years researching 40 hp motors. I saw lots of things that didn't make sense hp wise, and flow bech wise. The intake tract that had the best flow didn't always make the best hp. The best HP motor wasn't necessarily the fastest in the car.
Once at a SCCA National FV race, we loaned our test mule motor that made 40hp to a competitor(he blew his engine in qualifying) while the motor in my car dynoed at 50hp.
The 40hp motor that we loaned to the competitor won that race while setting a lap record at Riverside International Raceway.
Go figure.