smokeshow

iTrader: (17)

None of the graphs mention air flow at all. Did you even read them? The OP question was answered by joecar. It appears that all you're doing is finding every opportunity to brag about having a flow bench and capitalizing random words. If you manifest information out of thin air, people notice. Show the data from your bench that indicates a measurable difference in mass flow due to a change in pin offset or don't make the claim. Easy.

pantera_efi

iTrader: (1)

Hi Joe, please help, your fine work states Piston Velocity.

The Piston Velocity allows the weight of the air to enter the cylinder with respect to position. (volume/pressure)
There is another point of Piston Dwell at BDC.

Yes I do have an Air Flow Bench.
Yes I do have Kistler Cylinder Transducers commonly used with my Ford Ranger "twin-plug" engine program. (Camless)

YES I DO USE AIR for MEASUREMENT AND TRUE, when I was atop Pikes Peak, the AIR was VERY THIN !

MY measurement was made (observed) using an Engine Dynamometer, Super Flow, with supply Air Turbine AS STATED.

Lance

smokeshow

iTrader: (17)

Please forgive me for being dubious regarding word of mouth from an individual of questionable literacy. I'm saying I'd like to see the data. Otherwise all I can infer is that you're just tooting your horn about equipment you possess.

joecar

I'm not an expert, but I think what happens is the difference in the peak acceleration of the positive and negative offset cases occurs right at (or close to) one of the valve events (would have to superimpose a cam timing graph over the piston acceleration/velocity to see it better); also, there is also a difference in velocity right during overlap.

His literacy is not questionable, I believe English is not his first language; he does have a well equipped high-end performance shop here in SoCal (which in SoCal this is quite an achievement), I'll be going to visit him sometime soon.

G Atsma

I believe English IS his first language, but out of New Zealand, plus his technical expertise lends itself to language structure many of us are not conditioned to. He thinks outside of a box many of us would have difficulty getting much beyond.
Short answer- Don't count him short in any automotive discussion.

smokeshow

iTrader: (17)

Fair enough. It really goes without saying that some of the stuff he says makes you wonder if he's got all his marbles... Communication abilities notwithstanding, I'm interested in seeing the data for what he mentioned.

pantera_efi

iTrader: (1)

Hi ALL, thanks for the support.

My first test was done using my SF-800 engine Dyno in 1982.

I spoke to Smokey Yunick about his "Pin Offset" remarks and the best way to test.
The engine was a Ford 351-C for a Pantera customer.
I fit Boss 302 OEM pistons (OEM Offset pin reversed) AND 351-W rods into the 351-C crankcase.

Those here SHOULD read about : Smokey Yunick piston pin offset.

Lance

smokeshow

iTrader: (17)

My mistake, I thought you explicitly said that you tested this with your own turbine flow meter. I didn't realize it was word of mouth from someone else

G Atsma

When the word of mouth is from Smokey Yunick, you still listen.

pantera_efi

iTrader: (1)

Hi Jake, AGAIN YOU make a FOOL of YOURSELF.

Smokey had NASCAR customers, I had the Pantera customers, I have the SF-800, AND as stated it was my engine assembly tested in MY SHOP with the items fitted as STATED.

Do you work for CNN or Hillery ?

Lance

smokeshow

iTrader: (17)

Fool? I just asked you for the data on the test you performed. You keep reminding me that you tested for airflow improvement with varied pin offset. I get it. Claims are usually followed by something that substantiates them. We're all just here to learn...let's see that data