October 10, 2020 DYNO Day

UPDATE:  WE CAN NOW ACCOMMODATE 20 CARS!

We have an opportunity to visit Carburetor Connection in Kirkland for a club dyno day. 

Date/Time:  Saturday, Oct 10, 2020, approx 9:45 AM - 4 PM (Depending on participants).

Have you performed the usual performance modifications to your Corvette and want validation of the results?  Or would you simply like to know what horsepower your Corvette puts down to the road?  

Cost:  $95.50 for your Corvette or other two wheel drive vehicle.  If you want to prove that your Porsche Macan has more horsepower than a Corvette, the cost is 140.50 for 4 wheel drive vehicles. 

Observers can watch for free.

Details:  Each car/driver gets a minimum of 2 dyno “pulls”.  The intent is to get two consistent results.  If that takes more than 2 pulls, the additional pulls are at no additional cost. 

Participants:  We need a minimum of 5 paying participants and a maximum of about 10 to secure the dynamometer time.   Once we have 5 guaranteed participants, we will formalize the date with the shop, and confirm the time/details with everyone that has registered. 

In order to firm up our dyno date, we need your registrations NO LATER THAN Wednesday, Sept 23.

If we don't get at least 5 paying participants, your fee will be refunded.

Procedure:  The car owner drives the vehicle into the shop and stops with the rear wheels on the dynamometer rollers.  Shop personal will secure the vehicle from both the front and back.  Any risk on securing is the shop’s risk and they will not allow the participants to do the securing.  I am sure you can watch, but it is their liability, so naturally they want to do the securing properly. I would also anticipate that they will have the car hood open and a large fan blowing air towards the radiator to help keep the engine cool.  The dyno computer and shop tech are located close by the driver window.  The shop tech will provide direction, but as I remember the procedure, the driver will rather slowly accelerate the vehicle until it is in 4^th gear (or as near as direct 1:1 ratio as possible with an automatic transmission).  The shop tech will then have you go full throttle until you hit the car’s rev limiter, or until the tech tells you to back off.  Generally, the maximum horsepower will actually be reached prior to red line (rev limited), so the tech will tell you there is no need to go higher.  At this point, you don’t touch the brakes; there is a lot of resistance in that roller, which will rapidly slow the car’s engine and tire speed.  Remember that Chevrolet installed a rev limiter in your later model Corvette to prevent you from revving the engine beyond what Chevrolet determined was a safe red line.  This rev limiter prevents the engine from exceeding that safe limit.  Those of us that autocross or open track, have hit the rev limiter on numerous occasions as it is impossible to closely monitor the tachometer in competition.  Kevin has participated with two different cars at two different dyno facilities and both were similar to what has been described.  While I think the risk of engine damage is very unlikely, it should be noted that any car damage, other than the car coming loose from the securing or roller is the risk of the owner. 

This shop also offers specialized tuning to maximize the engine’s horsepower.  This special tuning is beyond the scope of this simple dyno day, but the shop management will be happy to describe the tuning (based upon the specific vehicle and/or any modifications made) procedure and cost.  That tuning would be conducted at a different date. 

Lastly, we and the shop will follow State mandated mask and distancing requirements. 

If you want to participate register here now and watch this event for more details.   

Event POC is Kevin Jewel.  Please contact Kevin if you have any questions.