Dyno Run Today
 

Hello Everyone,

Well I had a day off today so I thought I would get the 911 dynoed.

I am very happy with the resuts and I wanted share the news with people that would understand. (My wife does not understand my excitement).

I pulled 219 HP and 213 max torque at the wheels. That translates roughly to 252 HP and 245 max torque at the flywheel with 15% driveline loss.

It is a 86 3.2 Long Block with Webers and and pre 74 exhaust. The rest of the engine is stock.

I attached the jpeg in the members photos on page 2.

Thanks for allowing me to share. :D

Jeff

Ahhhhhh 8) probably better than the magic 10:1 ratio . . . . very nice.

Marc:

10:1.... Hell 5:1 is the magic number!. I'm still trying for 15:1 for my Targa... :cry:

Jason

Very nice!! Where did you take it?

-Justin

Justin,

I took over to Autothority. It was $75.00 and took about an hour from start to finish. I had been wanting to do it for awhile.

Does anybody know how much the actual drivetrain loss is?

Autothority says 15%. What do you Guys think?

Thanks
Jeff

All the coast-down measurements I've seen (only a few, BTW) showed 15% to 18%, so I think the 15% isn't far off from reality on most 911s.

Look at it this way... if the loss is higher than 15%, then you are making even more flywheel HP!!! That car must really fly.

I wonder what the dyno sounded like with those flat-spotted tires :shock:

That's why they strap them down! :lol:

It wasn't so bad.

Marc,

Did you buy your Yoko's locally, or did you get them elsewhere?

Thanks
Jeff

www.tirerack.com

Radial tire (in Silver Spring) is too far away.