2000 COBRA R long tube headers RWHP / RWTQ

[theboss281]

Hello Happy 2016 ! ,
I want to see if anyone in this forum who owns a 2000 COBRA R installed long tube headers and which has long the increase in power ?

Thanks .

 

[99cobrajn]

http://www.mustangandfords.com/how-...0153687941816001&adbpl=fb&adbpr=41204856000#1

 

[svtguy]

I am currently installing 1 3/4 inch Kooks long tube headers with 3 inch X pipe and Magnaflow muffler. Once completed, I'll post my before and after dyno results.



Paul.

 

[theboss281]

I am currently installing 1 3/4 inch Kooks long tube headers with 3 inch X pipe and Magnaflow muffler. Once completed, I'll post my before and after dyno results.



Paul.

Thank you Paul ,
you have the part number of your Kooks headers or they are custom made for you ?

Thanks again .

 

[svtguy]

Kooks Long Tube Headers part #11222200 with custom fit adjustments. These are for the 4.6 DOHC. These are NOT a direct replacement for 5.4 DOHC. I've had to adjust the tubes to fit my car. My car has Maximum Motorsports K member, but these are still a tight fit. I've had to install/remove multiple times to make adjustments. The car is on a hoist and the headers are being installed from underneath with the K member removed.

 

[theboss281]

Kooks Long Tube Headers part #11222200 with custom fit adjustments. These are for the 4.6 DOHC. These are NOT a direct replacement for 5.4 DOHC. I've had to adjust the tubes to fit my car. My car has Maximum Motorsports K member, but these are still a tight fit. I've had to install/remove multiple times to make adjustments. The car is on a hoist and the headers are being installed from underneath with the K member removed.

Great news , do you have pics ?

 

[svtguy]

Still a weekend work in progress. I will update this thread with pics once the install is complete.

 

[theboss281]

Still a weekend work in progress. I will update this thread with pics once the install is complete.

Great,
I have the Kooks headers with the same part number as yours , but I'm waiting for my Steeda K member to continue the installation work of the 2000 COBRA R prototype engine in my 1997 COBRA .

You have your engine , stock ?

Thanks

 

[svtguy]

Engine is stock.

 

[theboss281]

Hi svtguy ,
you have news about your progress ?

 

[svtguy]

Hi svtguy ,
you have news about your progress ?

No, but I'm getter closer to being finished.

 

[theboss281]

Great, me hope for that !

Thanks .

 

[svtguy]

I did a baseline dyno with the stock exhaust manifolds and 2.5 inch bassani catless x-pipe and bassani cat back exhaust. I then installed 1 3/4" Kooks long tube headers with a 3 inch dual inlet/dual outlet magnaflow muffler with side exit tail pipes.

When back to the Dyno on Monday. Dnyo showed a peak of 5rwhp and 5rwtq increase. No tune changes were made and I data logged AFR and spark on both dyno runs and they stayed the same.

I questioned the baseline dyno numbers as it showed almost 400rhwp. That's about 25rwhp more that I expected to see.

Unfortunately at this point I think these dyno numbers are inaccurate.

My reason for installing headers is that I am going to install some custom camshafts and it was recommend that I install 1 3/4" headers to maximize the gains.

 

[theboss281]

You have pics ?

 

[svtguy]

You have pics ?

I took some pics, but you really can't see anything.

I'm going to drop the engine out the bottom to install the cams. I'll take pics once I get the engine removed.

 

[theboss281]

Ok .
You have the camshafts specs ?

 

[svtguy]

Engine removed. You can see in the pics the places I heated the header tubes in order to reposition them. I have a replacement Borgeson steering shaft and had to turn down the steering shaft tube to get it to fit in between two of the drivers side tubes.

http://s123.photobucket.com/user/2000mcr/library/?sort=6&page=1

 

[theboss281]

Hi ,
you have news ?

 

[svtguy]

http://s123.photobucket.com/user/2000mcr/library/?sort=6&page=1



Dyno graphs before and after headers/cam install. Both tunes used a conservative 12.0 AFR and same timing curves with 27 total timing. 91 octane fuel.


Unable to get the curves onto the same graph. Picked up torque below 4500 and held it longer on the upper RPM's



Paul.

 

[Lightning&Mach1]

What are the specs on the cams?