The Project Pad

NICE

My understanding (from the link you provided) is that the division by 4 at the end is just to get the quarter wave length, and doesn't have much to do with number of ignition events.
I liked the cliff notes version from the same thread:

VERY simplified formula:

1100ft/sec (speed of sound) divided by drone frequency = full wave length.
Full wave length divided by 4 = quarter wave length.
Quarter wave length multiplied by 12 = length in inches of the Helmholtz chamber required to deal with your particular drone frequency.

VWAudi4Life wrote:My understanding (from the link you provided) is that the division by 4 at the end is just to get the quarter wave length, and doesn't have much to do with number of ignition events.
I liked the cliff notes version from the same thread:

VERY simplified formula:

1100ft/sec (speed of sound) divided by drone frequency = full wave length.
Full wave length divided by 4 = quarter wave length.
Quarter wave length multiplied by 12 = length in inches of the Helmholtz chamber required to deal with your particular drone frequency.

I think you're right, it was late when I was reading that

Btw,


Link to video

Awesome! Congrats!

NICE!!! now it's TOONING TIME

loxxrider wrote:NICE!!! now it's TOONING TIME

Yeah, I have to put it back together first!

Awe come on that might take all of 2 hours right? GET ON WITH IT!

Working till 10:30 then I have to force sleep to be up early, I may find a few free hours tomorrow.

Get on it already.....sleep is sooo over rated. It sounds good though!!

LoL; sleep, who needs sleep?!

Open downpipe is not as loud as I thought }:-)

Mmmmm progress!

Great work, I'm itching to see this beast tearing up secondary mountain roads!

congrats Ed. little disappointed in that oil cap though : )

perfect Ed, two questions, do you run on oem 7A gearbox and oem axle shafts? When we expected a run video?The sound of idle its impressive Congratzz !!!

Good stuff Ed

Congrats Ed!!!

Tom wrote:perfect Ed, two questions, do you run on oem 7A gearbox and oem axle shafts? When we expected a run video?The sound of idle its impressive Congratzz !!!

Tom, yes this car is stock 7a Coupé Quattro from the head to the outer CVs. I was not planning to use this large of a turbo but the deal was good so I'll be limited by the trans but otherwise it will, theoretically, have similar potential as a 3b.

In other news, I f'd my thumb up with a kitchen knife yesterday so nothing new to report.

congrats on getting it running, now get her driving!!!1

Mcstiff wrote:

Tom wrote:perfect Ed, two questions, do you run on oem 7A gearbox and oem axle shafts? When we expected a run video?The sound of idle its impressive Congratzz !!!

Tom, yes this car is stock 7a Coupé Quattro from the head to the outer CVs. I was not planning to use this large of a turbo but the deal was good so I'll be limited by the trans but otherwise it will, theoretically, have similar potential as a 3b.

In other news, I f'd my thumb up with a kitchen knife yesterday so nothing new to report.

But, do you know where is a limitation of stock gearbox?I am planning same way as you,only different will be a turbo (precision 6262), JE pistons,SCAT rods,VEMS,but i am thinking about using a different gearbox,than oem.
But as i said, perfect job Ed !

It is hard to put an exact number on the limitation of the gearbox, but it isn't hard to say that the 6262 will definitely break it.

To a certain extent the clutch pedal decides the limit. I took out an 01A in my last 7aT (~180whp) killed second playing with a G meter, after lots of abuse from myself and the previous owner

which gearboxes fits on 7A engine?3b? Without many modifications subframe or something else.If i am not do a "hard pull" i guess,that 7a gearbox can hold power around 400-500hp with a properly clutch . Its very rare to find a gearbox for sale in good condition,so i am try to figure it on best option...

I didn't see any driving :?

Yeah, I've got to get the exhaust and sway bar out of the way. It was 105° yesterday and I know had an hour so I figured I'd mess with the laptop

Got it out of the garage!


Link to video

I really want to get the exhaust (Thanks Micah!) on before I do much tuning on the street.