Dyno #'s This Weekend For 308 Intake/TB Mod

Are you planning on running the TB without the crank vents? It seems that would be needed to get clean numbers

TB == 4 HP, my guess

 

This should be very instructive. Even though the computer is supposed to correct, I hope the ambient air as close to the same for each run.
My bet: I also think it will be somewhere in the middle.

If you have extra run time, perhaps it would be interesting to compare compare a paper, K&N, and no filter if you have time.

Good luck!

 

I would be curious as to what the dyno operator said was the probable % variance from back to back tests with the same car with nothing changed.

Is it 1-2% expected accuracy run to run??? This would be +- 2.5 hp to +- 5 hp on a 250 hp car.

Would many runs even things out a bit more, reduce the average error??

Just some thoughts, it has been 30 years since i've been on a dyno.

good luck,
chris

 

I'm curious to how much additional hp the crank vents, throttle body and intake runners add, I have all of this stuff installed on my car I guess it's obvious my engine builder was Kermit. We never had the chance to dyno them individualy the day we were at the dyno we run into some problems I had water in the fuel system and still manage to pull 189 rwhp.
Now that my car is running well and dialed in the last pass I got a clean 227 rwhp.

Randy,
82 Mondy injected

 

Hey, I already wager on 4 in the other thread, pick your own number

 

227rwhp from a 2 valve is truly remarkable - that is like 270 horsepower at the flywheel from a 3 liter 2v engine. Even more remarkable if that is K-jet.

 

Last time I spoke with Randy he still has the K-jet on, The cross-ram manifolds for the dcoe's are almost done haven't seen a V8 Ferrari with sidedrafts.

 

Are you running these tests over at Hesco's or up in Huntsville?

 

Yes - I've been folowing from afar as well - 4 x Weber side draft DCOE with long runners on a 4cam V-8 are going to really be impressive in low end torque and sound.

His K-jet numbers bode well for Doc Cosgrove's run for sure.

 

K-Jet is over-maligned. The Lamborghini Countach used K-Jet for 400+ hp. The Porsche 928 used K-Jet for 310hp. Neither had a turbo. But for turbos, the Porsche 930 Turbo ran K-Jet, too (no slacker for HP numbers, either).

K-Jet delivers the fuel. K-Jet just has some air flow restrictions, but that's hardly a deal-breaker for large HP numbers, as flow restrictions can be managed/reduced.

 

Randy, can you tell us what modifications were done beyond stock? 227 HP at the wheels comes out at 265 at the crank, well above a stock carbed euro is rated at. Very impressive for a CSI car. I know Kermit discussed modifying the air intake and air flow to the CSI unit, is yours so modified?

 

Yeah. Could be me or my neighbor. He's got a red/tan 348, too. Small world.

 

Oh man! I had no idea. I thought that you were at the Summit. Where was your Fcar?

Yes, that was me (as well as my 3 year old daughter in the passenger car seat) with the top down yesterday.

Great weather.

MT seems to be making it. Always iffy for a new bar/diner. Walk across the street and say hello some time if you can get away from work for a minute (are you still not drinking or can I buy you one?).

 

That, ladies and gentlemen, is where the horsepower came from.

 

Ooops, sorry. I just didn't remember you drinking anything during/after our Alabama vineyard run last month.

No worries. Walk over and it'd be my pleasure to buy you a drink.

 

I've got a K&N installed, but I've got an extra UFI paper filter around here I can bring if we have more tuning time and extra runs to try. Or maybe we should dyno your car too with a few parts swaps.

 

Who did your head flow work?