Your experience foot brake vs. 2 step regarding ET - Page 4

Rusty Davenport · 09-14-2016, 09:54 AM

Quote:

Originally Posted by Danny Ashley

Plug the accelerator well tubes

Hey Danny sounds like what I've been looking for......but please don't leave us hanging.....can you go into a little depth on the "accelerator well tubes" PLEASE SIR or anyone else who has done this.....THANK YOU

Rusty Davenport · 09-14-2016, 10:39 AM

Quote:

Originally Posted by Rusty Davenport

Hey Danny sounds like what I've been looking for......but please don't leave us hanging.....can you go into a little depth on the "accelerator well tubes" PLEASE SIR or anyone else who has done this.....THANK YOU

Is that the same as "SECONDAY ACCELERATOR WELL TUBES"

Danny Ashley · 09-14-2016, 11:19 AM

The accelerator well tubes are the outer 1/8 inch diameter brass tubes in the air horn. They need to be plugged or removed for 2-stepping. However it isn't necessary, but will help the rich condition the moment the 2-step is de-activated. I have had racers with O2 sensors tell me their A/F would go as rich as 10.5 the moment the trans brake was released. I was told my someone a lot smarter than me that while on the 2-step puddling occurs in the intake because of the cylinders being canceled and the moment the button is released the excess fuel enters the cylinders causing the over-rich condition. My preferred method was to tap the tubes for a 3-48 stainless steel set screw. This allowed the racer to go back to foot-braking simply by taking off the airhorn and removing the set screws. You can just pull them out and if you decide to install them just flip them around for a press fit as they are swedged from the initial installation. They should be staked in regardless as they have been known to fall out even from the factory. Hope this helps.

j gardiner · 09-14-2016, 07:52 PM

I run my secondaries on my q-jet as loose as I can when I foot brake, but when I 2 stepped it would stumble. I tightened the secondary spring 1 turn and it was perfect.

09-14-2016, 09:01 PM

Quote:

Originally Posted by mat H/SA

with the 2 step??

yes, the only way I could hit the tree in that car

09-14-2016, 11:19 AM	#33
Danny Ashley Member Join Date: Nov 2001 Location: Marion,In. Posts: 267 Likes: 60 Liked 110 Times in 29 Posts	Re: Your experience foot brake vs. 2 step regarding ET The accelerator well tubes are the outer 1/8 inch diameter brass tubes in the air horn. They need to be plugged or removed for 2-stepping. However it isn't necessary, but will help the rich condition the moment the 2-step is de-activated. I have had racers with O2 sensors tell me their A/F would go as rich as 10.5 the moment the trans brake was released. I was told my someone a lot smarter than me that while on the 2-step puddling occurs in the intake because of the cylinders being canceled and the moment the button is released the excess fuel enters the cylinders causing the over-rich condition. My preferred method was to tap the tubes for a 3-48 stainless steel set screw. This allowed the racer to go back to foot-braking simply by taking off the airhorn and removing the set screws. You can just pull them out and if you decide to install them just flip them around for a press fit as they are swedged from the initial installation. They should be staked in regardless as they have been known to fall out even from the factory. Hope this helps.

09-14-2016, 07:52 PM	#34
j gardiner Member Join Date: Jul 2006 Location: waldorf Posts: 221 Likes: 14 Liked 55 Times in 29 Posts	Re: Your experience foot brake vs. 2 step regarding ET I run my secondaries on my q-jet as loose as I can when I foot brake, but when I 2 stepped it would stumble. I tightened the secondary spring 1 turn and it was perfect.