early dyno results

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02-05-2011, 08:14 PM

#76

GregBBRD

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Quote:

Originally Posted by m42racer

I think any comparison between WHP and BHP is stupid to even consider here. What should be considered is what is been done. This engine appears to be mapped from scratch, and so doing this on an engine dyno where all parameters can be controlled is the only way to do it properely. I have not seen all chassis dyno's, but the ones I have seen are never set up for mapping. Mapping is done on them, but never do they have good cooling, good air control etc. How do you control the Oil temp on a chassi dyno. If you do sweep runs it would not matter, but thats not mapping and sweep runs always give higher numbers. Comparing a dyno jet with this engine dyno is like comparing a Rolex with a Timex.

I am sure if it could be done accurately it would have been done on a chassis dyno. I guess Greg knows best and that is why it is been done this way.

I have a Mustang eddy current dyno, in my shop...so applying a load and holding the engine there is not a big problem. Holding it at 6,000 rpms for 1-2 minutes is a whole different problem. Controlling the water temp and the oil temperature could be done with remote coolers, like on the engine dyno. I guess we could get enough airflow over the whole thing to keep everything else cool, but it would be a tough road. However, keeping the rear tires cool enough to live through a couple of tests would be very hard.

The tough part about putting the engine on an engine dyno was creating the adaptors and the mounts needed to bolt it up. Now that I have that stuff, it is going to be a whole bunch easier to do. The dyno shop is literally less than a block from me....I drive there, but only because I'm always hauling something that I need.

As I've said, I was running a few experiments, while doing this dyno. I've also said that I learned a whole bunch about these engines, from the experiments. That made the engine dyno session worth the effort.

02-05-2011, 08:36 PM

#77

m42racer

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Any chance for more video and sounds?

02-05-2011, 09:14 PM

#78

RKD in OKC

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Lindsey Racing made an engine "cart" that holds all the coolers, sensors, etc. so they can do all the plumbing remote from the actual dyno. Just roll it in, bolt it to the crank, plug in the monitor connectors, and vroom.

02-05-2011, 09:30 PM

#79

GregBBRD

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Quote:

Originally Posted by RKD in OKC

Yes, same thing...except the dyno owner has several carts, so I didn't need to build one.

It is off the dyno, still on the cart.

I'm changing some things and we will roll it right back onto the dyno.

BTW...still have to hook up water, exhaust, drive shaft. fuel, and things like that. It's not like pulling up to the automated teller machine.

02-05-2011, 09:36 PM

#80

Rob Edwards

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Quote:

Any chance for more video and sounds?

If the next dyno day happens to coincide with my next hooky day, I will take my digital audio recorder and capture some more noise. The house audio system doesn't do it justice.