Bad Ass Cars

Are all of your engines started and run on a dyno before you ship them?

No, only if we arranged to do this before hand and it isn't a very cheap thing to do.

Some engine companies (we won't name any names here) advertise in magazines boasting about dyno running all of their engines before they sell them. If you've ever worked with a dyno before, you'd know that it isn't just something that happens in 15 or 20 minutes, or even an hour or two. It takes at least a half day to do a simple "run-in", and it can take 1 or 2 days if you are talking about doing any serious tuning, jetting, etc. If it is an all-out racing engine, it may be on the dyno for a week depending on how much trial and error you want to put into testing it, and even changing different parts such as cams or alter the cam timing, rockers, heads, carbs or whatever you may be trying at the time. Obviously we aren't talking about that same scenario if you bought an engine from us though because all of that would already be designed into the engine you bought, but in some applications, dynoing can take a good day or so of labor, and additional parts.

So what about just starting & running an engine on a dyno like many engine building companies claim they do? Keep this in mind. A dyno is a very expensive piece of equipment (about $30 grand or so NOT including the building it's in). Once an engine is built, it will need to be mounted on the dyno, have the flywheel hooked-up to the water brake, then you have to install the spark plugs, the distributor, install the plug wires, mount a water pump and fuel pump, plumb-in the carburetor, install a fuel filter, install the oil filter and add oil. Then there's the belts and pulleys that need to be mounted as well. After that, the engine needs to be started and run for about 20 to 30 minutes to break-in the cam, or to simply bring up the oil temperature (you NEVER want to pull on a dyno until the engine is at running temperature).

Then the timing must be set as well as the carb adjustments. Then it's a good idea to let the engine cool down for a while and in the mean time... the break-in oil gets dumped along with the first oil filter and more oil goes back in along with another filter, and if it has a flat tappet cam, the heads will now need to be torn down so the inner valve springs can be re-installed being that you can NOT break-in a flat tappet cam with double or triple valve springs.

Then the engine has to be run again for at least another 10 to 15 minutes before any hard pulls can be done to ensure proper running temperatures and oil temps, exhaust gas temps and so on. Then you can make a pull and see what you get. After that, you can play with the timing a bit, play with the carb jetting or swap that carb for an entirely different one, try a carb spacer or whatever you think needs to be done and, do it all over again.

Like I said, it takes a LOT of time to do it right and no one works for free or pays $30,000 or so for a dyno to GIVE away free dyno pulls. As you can now see, it is pretty involved, quite time consuming and there are a lot of little extra parts that need to be purchased and used to make it all happen. Is that stuff supposed to be free or included in an already great price on your engine? So the next time you see a magazine ad boasting about a so-called "great engine" at a bargain price that says each one has been run and tuned on a dyno, think about what all has to go into it, and how they work all of that extra time and parts into the price? Something HAS to be cut somewhere to make up for all of that time and effort because there is NO WAY a professional engine builder is going to do all of that for free.

Here's how a lot of engine builders mislead you into believing their engines are ran on a dyno. They'll build one engine and dyno it to see how it runs, then they duplicate that same engine combo for every engine they build afterwards and say something like "dyno proven results". Well, most of our engines are "dyno proven" too, but to really say you have a dyno'd engine, it actually needs to go ON a dyno, and that can cost anywhere from $750 to $1,000 + extra, not including the parts and materials needed to hook it all up and make it run that your engine may not have come with.

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