leif997

trackside?.....

MarkPcar

Not this weekend with the PRC Thunderhill NASA race. I haven't heard any comments on it by any drivers.

Chris Prack

Apperently podium finishers will be dyno'd but who is setting the hp bar is unknown. Atleast in the mid Atlantic......

Bryan Watts

Yes, NASA GTS and Spec E30 often dynos at the track here on the East coast

944Cup

Varies from series to series, at least in NASA MidAtlantic. Some series do require a trackside dyno pull, when a dyno is present.

svochuck

Nationals will have a Dyno present....
Rocky mountain has not had one at the track yet. But we did have a dyno/tech day before the season started.

Chuck

Jim Child

NASA GTS classes cars based on a lbs/hp ratio. You need to have a dyno certification form on file at the beginning of the season to justify the class you're running in. Top cars in class are weighed at the end of qualifying or races to make sure they meet the minimum lbs/hp for their class. At some events there is a dyno on site to check the top cars in class to ensure that they're putting out the hp stated on their certification forms. I ran the entire Ohio/Indiana region schedule last year and I was on the dyno several times. Its a pretty painless process that's well worth it in my opinion.

Bonster

Here on the left coast, I've never heard of this. The only time I've heard of any kind of dyno being required out here is in the SCCA for the sealed engine Spec Miata class.

Ed Newman

Sounds like a pretty cool idea

analogmike

What do they do about turbos? They can make more power after dynoing by increasing boost setting.

Bryan Watts

They declare it illegal to do so and trust you to not be a cheater. The same could be done on a N/A motor as well with a programming change (back the timing and rev limiter down), only to a lesser degree.

Bonster

***Yeah, except that you have to pull the engine and send it to an SCCA approved mechanic. It costs $499 to dyno, last I heard, but oh, wow -- the SCCA gets you a discount of $200 at this time as a way to help promote the race class. I've never shipped an engine, but I doubt it's cheap. I considered the sealed motor class for a long time until I found out this news.

Bonster

Forced induction is not legal, as Bryan mentioned, in the Spec Miata class. Apparently there's some kind of tag that is put on th e engine after it is dyno'd. I heard that they dyno'd it to a specific max hp -- something like 108 iirc. But I bet there will still be cheaters. There are a lot of smart people in the world -- somebody always seems to find a way.

Bryan Watts

Bonnie...sorry, I was talking about NASA GTS. It's a class for German cars. FI is perfectly legal and cars are classed on a power/weight ratio. My comment was with regards to changing boost levels of engine tuning being illegal as a means to "trick" the dyno at the track and end up in a slower class. Each car must be dynoed before coming to the track to establish it's class, but cars are sometimes checked at the track with a mobile dyno. Spec E30 also occasionally uses the dyno to check their cars here in the Mid-Atlantic and SE as well.

http://www.gtschallenge.com/

Bonster

Oh, I see Bryan. I probably shoulda caught that. Thanks for the link . . . I'm always up to learning.