LBZ: Banks Speed Brake

Jasondt2001

New member
May 3, 2008
373
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0
Salinas, Ca
That is one sweet lookin Jimmy on the cover of the Mag:D

You should see it IN the mag - The damn thing looks like it was borrowed brand new from the showroom for those pics... it made me SICK :hug:

I see you said 50=100% vane and only 5 - 6 lbs of boost pressure?

The highest I've logged is around 10psi ( on the gauge ) I also saw in that article something about safeguards so you won't float valves... That's interesting, any thoughts? I sure hope I don't float mine, I've had it for a while now with no issues... Knock on wood.:rofl:
 

sqdd51

Bad Ass Duamax
Nov 7, 2007
14
0
0
Palmdale CA.
You should see it IN the mag - The damn thing looks like it was borrowed brand new from the showroom for those pics... it made me SICK :hug:

I see you said 50=100% vane and only 5 - 6 lbs of boost pressure?

The highest I've logged is around 10psi ( on the gauge ) I also saw in that article something about safeguards so you won't float valves... That's interesting, any thoughts? I sure hope I don't float mine, I've had it for a while now with no issues... Knock on wood.:rofl:

I'm assuming (that we should never do) that when it shows 100% braking the vanes are completly closed. I'm not too worried about valve float with the brake when I run 32lbs of boost just jumping on the freeway.:driving:
 

JoshH

Daggum farm truck
Staff member
Vendor/Sponsor
Feb 14, 2007
13,711
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Texas!!!
Valve float is more of an RPM related problem. As long as you don't pull too many RPMs, you shouldn't have a problem. Since the stock trans brake pulls the RPMs well over 4k, I think you'll be fine.
 

Jasondt2001

New member
May 3, 2008
373
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0
Salinas, Ca
I'm assuming (that we should never do) that when it shows 100% braking the vanes are completly closed. I'm not too worried about valve float with the brake when I run 32lbs of boost just jumping on the freeway.:driving:

Valve float is more of an RPM related problem. As long as you don't pull too many RPMs, you shouldn't have a problem. Since the stock trans brake pulls the RPMs well over 4k, I think you'll be fine.

Thanks fella's, I value your input, it puts my mind to rest!! :hug:
 

sqdd51

Bad Ass Duamax
Nov 7, 2007
14
0
0
Palmdale CA.
Valve float is more of an RPM related problem. As long as you don't pull too many RPMs, you shouldn't have a problem. Since the stock trans brake pulls the RPMs well over 4k, I think you'll be fine.

Your right on valve float is usually the result of high RPM's, I don't think the stock cam profile is going to be a problem with valve float as you said under 4000/4500 RPM. 50 lbs of boost might try and lift an intake vave off its seat with a stock valve train but I dought anyone is running a Speed Brake that can do that. I think every one should be pretty safe with it.:driving: