To my old ears, that has more of a mechanical harmonic resonance sound up and down with revs and speed. I suspect drive line.
but I’ve been wrong before.
Grew up with the ole man racing 1/4’s and midgets (along with flat track that later went to the OC fairgrounds) at Ascot in the early 70’s. The configurations would boggle the mind.
grew up in a machine shop that catered to all these racers. Neighbor was Jerry Brady of Manning Brady racing heads...
I see all of this as baseline measurements for testing and gain purposes. Sure, hooking up tires, rims, unsprung weight, etc will change the final numbers, but those variables will change based on configuration.
As an engineer, I like the controlled testing. Then, real word values will align...
Ya'll realize that just about every plane in the sky is littered with Aluminum parts coated in Zinc Chromate. Right?
All those pretty green and yellow seat frames? yup.
Air frames, spars, ribs ?? yup.
Made aerospace parts for 30ish years. If it was aluminum and left the ground,, it more than...
Did you read my post on my F250? It was the fuel lines chewed on. Little bitty holes chewed thru.
Misted gas coming at pressure will ignite very quickly and harshly. Way worse than a flow of gas.
Fortunately, I was just starting it and nothing was hot yet.
So I keep reading about this double honk thing...
I have never experienced this, regaardless of where I (and my keys) are at with the Bronco running.
In, out, door open, shut, keys in the house. I cannot make it double honk.
No forescan or any tuner.
My F250 had critter damage. When I started it, I Smelled gas and instantly shut down. Popped the hood a had wife quickly turn on and off. Gas was squirting right where OP is saying. Right under driver wiper in front of firewall. Flat bedded to dealer.
They had to remove the cab to replace.
Been married 38 years.
In that time, shes run (operator only) Makino's, Miyano's, Fadal's, and CMM's.
She knows a bit of Gcode, and has worked booths at IMTS, WESTEC, and the Reno machine tool shows. She can talk shop with the best. :crackup: