Monday, March 27, 2023

Should You Dyno Your Engine Before Installation?

Main Should You Dyno Your Engine Before Installation?

Viewing 24 posts - 1 through 24 (of 24 total)
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  • #111757

    For this video I’m referencing performance engine applications, not everyday driver applications. As of this posting I’ve built 2 vehicles, the #FairmontProject, and …

    Shane Broussard

    Two engines and potentially two broken piston rings? I don't know that seems suspicious. Seems like it would take quite a lot of detonation/pinging to break a ring.

    J Cirafic

    I have no experience with performance engines but why not just use a crate engine and put a few performance parts around the engine? The truck looks great. Thanks for all your work Eric.

    James Miller

    Engine Dyno testing is a controlled environment. Chassis Dyno testing puts more variables or reality into play. A combination of dyno testing and tuning experience maybe what is needed.

    Astral Auto Repairs

    Question: I saw a few 'engine test stands' for around $2500. Would that have helped in this situation? I know they are kind of different than a dyno, but do you think it would have been enough to cause that engine to go PING?


    Fit motor then do a base tune so it is running… then take to specalist for a real tune. OR stick with the old skool carb/super charger setup with the handy screw driver for tuning carb 🙂


    Awesome video Eric, I think if you have the budget to dyno you absolutely should. You'll have proven printed results of your level of performance plus you get to see how everything works. Leaks are easy to repair, and you only have to crawl all over your truck once hopefully. One day soon my 91 C1500 will need an engine and I'd hoped to duplicate your set up or very close to it. Budget allowing of course….. Cheers friend, good luck with your truck!


    I would want a performance engine tested before installation. Regardless of going to a dyno, I'd run it on a test stand first. Then if the engine needed it, take it to a dyno. As dyno time is pricey as well as time intensive as there are none nearby so I'd have to travel.
    At this point, the lower the desired hp, the more I'd look at crate engines.

    ryan davis

    Not if you use blue v/c gaskets

    george bonney90

    If ur modifying ur engine in anyway i think turning is essential. If ur just replacing oem parts u should be okay. It would be awesome to see a calibration with Nick's Garage, i dnt kno how realistic it is but it be sweet

    Felisindo RodrĂ­guez

    Hi Eric, this really sucks…Sorry for you. Good side of that, being selfish here, is more learning videos for us man!
    Anyway, wish you good luck…And patience! Thanks for sharing the good, the bad and the ugly. Much appreciated.

    Rick Palechuk

    Dyno ….worth every penny.
    It's all about information.
    Nothing more scary than the first startup.
    Missed the cam journal oil plugs in a 360 Dodge I built once… fun.
    Good topic Eric, thanks for sharing.


    Build your own.
    Then you can be proud of everything cause you done everything.
    It has more meaning than just dropping say an LS1 and cranking it over.

    Travis Dunn

    Problem with a engine dyno is that it won’t take into account your vehicle setup. It’s not going to have the same fuel pump, drivetrain loss and such to really tune it for your application. It will help as you can perform a proper break in procedure to seat the rings and camshaft. I will say that it takes time for the EFI system to learn what the engine wants. It should spend time at idle, holding the RPMs through the rev range until the unit sees what it needs before driving it. Even then I would keep the RPMs low and no full throttle until at least 500 miles. I would be curious to see what your compression ratio is on that motor and if that was a factor.


    performance = dyno before hand


    Maybe Kalvenator engines could make a collaboration video to help diagnose engine failure with you. It would be good for the buisnees to justify their builds.

    Rick James

    Should you even watch Eric the Car guy?

    Ian Mowbray

    It would have saved you a lot of trouble if for the first start up tune if you had paid a experienced engine turner to help you set the Initial first tune and then gone from there your self. Maybe on the next one.

    David Wright

    The best part about your channel(s) is they are always educational. So you failed with some aspects of rebuilding two engines, that's knowledge building and lesson learning shared to all of us! I call it win/win. I agree with Dyno the engines if possible first providing there's no pressure time constraint. So your going to rebuild Dad's Trucks engine again and we your audience get to watch and enjoy the experience good and or bad, but best of all WE LEARN!!! Looking forward to the video's.

    Simon Coles

    I think you should probably have the engine dyno tuned to make sure it is operating properly on its own, and again after the installation so you can correct for any issues your transmission and driveline might introduce.

    Antonio Claudio Michael

    Crate engines are okay for power builds but I also think dyno testing the engine is better then it breaking down in the truck rather it break on the dyno fix it then dyno again then have to keep pulling it from the truck

    Antonio Claudio Michael

    Great video Eric I agree Dyno Testing always help

    Alan Maier

    My take is using a dyno before installation is the best way to check for problems and tune as needed before dropping it in. Some repairs and upgrades don't need that step, but a performance engine – or any engine that has been rebuilt, should be at least run before dropping it into the vehicle.


    I've never attempted to do any performance enhancements on my vehicles, largely because I don't have the necessary skills to do so. Your idea of tuning the engine before installing it in the truck makes sense, though.

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