Ed's 1991 CQ: Progress!

Post by **EDIGREG** » Wed Jun 13, 2012 11:48 am

NICE

VWAudi4Life · Post by **VWAudi4Life** » Wed Jun 13, 2012 11:50 am

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.

Mcstiff · Post by **Mcstiff** » Wed Jun 13, 2012 2:03 pm

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

VWAudi4Life · Post by **VWAudi4Life** » Wed Jun 13, 2012 2:10 pm

Awesome! Congrats!

loxxrider · Post by **loxxrider** » Wed Jun 13, 2012 2:11 pm

NICE!!! now it's TOONING TIME

Mcstiff · Post by **Mcstiff** » Wed Jun 13, 2012 2:19 pm

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

Yeah, I have to put it back together first!

loxxrider · Post by **loxxrider** » Wed Jun 13, 2012 2:25 pm

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

Mcstiff · Post by **Mcstiff** » Wed Jun 13, 2012 2:34 pm

Working till 10:30 :lol:

then I have to force sleep to be up early, I may find a few free hours tomorrow.

quattro87 · Post by **quattro87** » Wed Jun 13, 2012 5:56 pm

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

Mcstiff · Post by **Mcstiff** » Wed Jun 13, 2012 6:08 pm

LoL; sleep, who needs sleep?!

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

PRY4SNO · Post by **PRY4SNO** » Thu Jun 14, 2012 3:37 pm

Mmmmm progress!

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

pkw · Post by **pkw** » Thu Jun 14, 2012 11:06 pm

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

Tom · Post by **Tom** » Fri Jun 15, 2012 5:47 am

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 !!!

audifreakjim · Post by **audifreakjim** » Fri Jun 15, 2012 8:06 am

Good stuff Ed

UrSobsessed · Post by **UrSobsessed** » Fri Jun 15, 2012 9:15 am

Congrats Ed!!!

Mcstiff · Post by **Mcstiff** » Fri Jun 15, 2012 1:57 pm

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.

my2000apb · Post by **my2000apb** » Fri Jun 15, 2012 7:27 pm

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

Tom · Post by **Tom** » Sat Jun 16, 2012 1:08 am

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 !

loxxrider · Post by **loxxrider** » Sat Jun 16, 2012 6:12 am

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.

Mcstiff · Post by **Mcstiff** » Sat Jun 16, 2012 7:01 am

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

Tom · Post by **Tom** » Sun Jun 17, 2012 2:30 am

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...

Mcstiff · Post by **Mcstiff** » Tue Jun 26, 2012 8:14 pm

Link to video

loxxrider · Post by **loxxrider** » Tue Jun 26, 2012 10:28 pm

I didn't see any driving :?

Mcstiff · Post by **Mcstiff** » Wed Jun 27, 2012 4:41 am

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

Mcstiff · Post by **Mcstiff** » Tue Jul 03, 2012 10:50 am

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.

Ed's 1991 CQ: Progress!

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Ed's 1991 CQ. We have fuel. We have FIRE, we have idle...

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Ed's 1991 CQ. We have fuel. We have FIRE, we have idle...

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Ed's 1991 CQ. We have fuel. We have FIRE, we have idle...

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Ed's 1991 CQ. We have fuel. We have FIRE, we have idle...

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Ed's 1991 CQ. We have fuel. We have FIRE, we have idle...

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..

Ed's 1991 CQ. We have fuel. We have FIRE, we have idle...

Re: Ed's 1991 CQ. We have fuel. We have FIRE, we have idle..