6.4's hooked to the sled?

RedStroke08

RedStroke08

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Oct 2, 2007
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How are the 6.4's doin when they're hooked to the sled? I haven't seen any around home...so I was just wonderin'?
 
Yea I pulled mine. It did well. I pulled in the street class and made it 298ft. Nice and smooth and I know I could've gone further but now i know for next time. Il post a video tomarow.
 
ive seen a few drive shafts and radiators breaks on them
 
I saw one pull in the stock class up at the J&H event in Redding, CA. Looked pretty good!
 
I have heard they do very well, but never actually seen one pull in person.
 
we had one pull this past fall, and it pulled 296, not bad at all for a stocker at all!! not to mention that damn coil front end that likes to start hopping when the box get all the way foward!!
 
How do the rules work on the 6.4's? Typically twin turbos are only allowed in the upper classes... Not entirely fair if the 6.4's can run twins in a street class where everybody else only gets a single?

How do radiators break while pulling?
 
I think it's fair that they can run twins. Most street classes allow them to run them since they are factory. They are mainly for emissions, and probably arent any better than a single for making power.

Eric
 
They are not twins anyways they are compound turbos. The little one spools first then quits then the big one spools. They do not work like a twin system where one turbo builds of the other.
 
we have two that we have hooked so far, They run real good for no more then is done. The one should be hooked quite a bit next year

Travis
 
Last one I have seen looked like this:

101307027.jpg

101307026.jpg
 
Kman9090 said:
They are not twins anyways they are compound turbos. The little one spools first then quits then the big one spools. They do not work like a twin system where one turbo builds of the other.
Click to expand...


No, you've got it backwards.

Most "twins" for competition purposes are compound twins where the big charger feeds through the little one, and the pressure ratios multiply, giving you boost levels of 50 psi and more.

The Ford twins are the new R2S (regulated two-stage) system from Borg Warner. The setup is similar to compound twins, but the neat trick with R2S is that it has bypass valves that let the big charger breathe around the smaller one, directly into the intake manifold. Most people would call this a "sequential" twin system where the pressure ratios are not multiplied....the system just transitions from small to big once you're moving enough air.

Cool thing is, R2S can also be manipulated to run sequential OR compounded all in the same setup....just by manipulating the valving.

If you go to Borg's website, it explains it in detail. Remember, this system is made to meet emissions requirements, so they want it on boost at all times...meaning, the small charger is real small and the big one ain't so big. Using this same system, sized much larger for competition, might work great, but as it stands, it's not a concern.

As far as pulling goes, I have yet to see a hot 6.0, let alone a hot 6.4, so nobody is worrying about them until they start winning....which may be.... a long time.
 
nwpadmax said:
No, you've got it backwards.

Most "twins" for competition purposes are compound twins where the big charger feeds through the little one, and the pressure ratios multiply, giving you boost levels of 50 psi and more.

The Ford twins are the new R2S (regulated two-stage) system from Borg Warner. The setup is similar to compound twins, but the neat trick with R2S is that it has bypass valves that let the big charger breathe around the smaller one, directly into the intake manifold. Most people would call this a "sequential" twin system where the pressure ratios are not multiplied....the system just transitions from small to big once you're moving enough air.

Cool thing is, R2S can also be manipulated to run sequential OR compounded all in the same setup....just by manipulating the valving.

If you go to Borg's website, it explains it in detail. Remember, this system is made to meet emissions requirements, so they want it on boost at all times...meaning, the small charger is real small and the big one ain't so big. Using this same system, sized much larger for competition, might work great, but as it stands, it's not a concern.

As far as pulling goes, I have yet to see a hot 6.0, let alone a hot 6.4, so nobody is worrying about them until they start winning....which may be.... a long time.
Click to expand...

I think you sucked the wind out of ever 6.4 owners sails that was bragging that they had "twins" or "compounds"
 
Seeing how the GM and Dodge engines are performing just as well and in some cases better with one Turbo.......
 
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