Turbo Size
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Turbo Size
Hey guys, what's the inducer size on the larger of the turbos in the twin setup? We are working on rules for our pulling organization and want to make sure that they include the 6.4L twin ford's in the Work Stock class. We currently don't have any that pull with us, but don't want to accidently exclude them by making a rule that doesn't allow them to compete due to inducer size.
Thanks
Thanks
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Welcome to FTE Crhis611
Someone may come along with exact specifications to your question. The 6.4L is a sequential turbo. The high pressure side is a variable geometry turbo.
My question is, what are the rules? Twins are separate, identical and your first mistake.....
Someone may come along with exact specifications to your question. The 6.4L is a sequential turbo. The high pressure side is a variable geometry turbo.
My question is, what are the rules? Twins are separate, identical and your first mistake.....
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6.4L was first introduced in the 2008 models and features a compound turbo setup.
6.7L has yet to be introduced. Will feature a Honeywell sequential turbo.
Looking for an education here guys.
Basically we have a 2.5" turbo class that is supposed to be our Street stock class. It will allow stock trucks to pull without safety equipment. The 2.5 works for the duramax, dodges and the 6.0 and older Ford engines. Just not sure how it works with the newer 6.4L & 6.7L. Any help you guys could give on how to word the rules and/or tech a 6.4 or 6.7 turbo would be great.Thanks guys
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I have not been schooled on the 6.7 and I have yet to put a hand on one so I will not make any comments till they hit the ground.
the 6.4 started for sales 1/1/07 as an o8 my truck. they have a low pressure turbo feeding a high pressure turbo. please do not mistake this as a TWIN setup it is not. A TWIN set up would be 1 equal turbo per each bank. this is a sequential combo set up.
Now this is only rumor as far as Im concerned till the truck hits full production.
Ford's end result is a 6.7-liter Power Stroke diesel with an industry first, single-sequential turbocharger that combines the benefits of twin turbochargers into a single unit. The result is fewer moving parts, less vibration and an elimination of some of the sounds of air movement typically associated with twin turbos.
now this is from an artical are they misrepresenting what TWIN is I have no idea. see above.
the 6.4 started for sales 1/1/07 as an o8 my truck. they have a low pressure turbo feeding a high pressure turbo. please do not mistake this as a TWIN setup it is not. A TWIN set up would be 1 equal turbo per each bank. this is a sequential combo set up.
Now this is only rumor as far as Im concerned till the truck hits full production.
Ford's end result is a 6.7-liter Power Stroke diesel with an industry first, single-sequential turbocharger that combines the benefits of twin turbochargers into a single unit. The result is fewer moving parts, less vibration and an elimination of some of the sounds of air movement typically associated with twin turbos.
now this is from an artical are they misrepresenting what TWIN is I have no idea. see above.
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So you are callilng the 6.4L turbo setup a sequential system. And this is different from a compound setup. Here is what I have found on wiki about sequential:
Sequential twin-turbo refers to a set up in which the motor utilizes one turbocharger for lower engine speeds, and a second or both turbochargers at higher engine speeds.
Is this accurate for what the ford 6.4L has for a turbo?
Sequential twin-turbo refers to a set up in which the motor utilizes one turbocharger for lower engine speeds, and a second or both turbochargers at higher engine speeds.
Is this accurate for what the ford 6.4L has for a turbo?
Post Fiend
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From: N. Fort Worth, tx
nope the 6.4 always feeds low side to high side. all boost has to pass through the high pressure unit, even if its not lit.Now I could be wrong here but that would make it compound. and not twin aswell.
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To make it easier since the new trucks are technically advanced, our local rules are if you smoke in the street class you are disqualified. You can also, simple and missed by many organizations, read the computer after the pull as the participant weighs back in.
After market upgrades are not as effective with no tuning or modifiers.
After market upgrades are not as effective with no tuning or modifiers.
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Post Fiend
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Our organization is okay with the black smoke rolling. The crowd likes it and also these days it only takes a few hundred bucks for a programmer that will make most trucks smoke. That being said, smoke doesn't always equal power. I run a Duramax tuned with EFILive and just have a light haze. It runs with other Dmax's/PS/Cummins with smoke pouring out of the stack/exhaust.
Back to the 6.4L turbo. How would you guys write rules if you wanted the 6.4L turbo(s) to remain stock? How would you word that? Would it be an inducer measurement or would it be some other measurement? How can we tech it?
thanks
Back to the 6.4L turbo. How would you guys write rules if you wanted the 6.4L turbo(s) to remain stock? How would you word that? Would it be an inducer measurement or would it be some other measurement? How can we tech it?
thanks
Post Fiend
Joined: Oct 2009
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From: N. Fort Worth, tx
to measure the inducer is near impossible and in the field really hard as to measeure the high side would require some teardown of the engine. you best bet woudl be stock formation only. you could take a couple of test truck's and base line boost with egrdc# set at 0% vgtdc# 85% and rpm at say 1200 and say your boost must be under said number to to run. for example a 6.0 would be around 2.24psi max boost under that condition. this would tell you kinda of what the turbo is doing. I can look at the next 6.4 to hit my stall and give you a good number at 1000'
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Problem 2 is tuning, at weigh in you would be disqualified because you do not have enough time to return the ECM to stock.
The 6.4L and newer generations are going to be harder to control with visual inspection. Quote taken from a diesel performance web site: Upgrade your stock atmosphere charger from 65mm compressor wheel to a 71mm Billet wheel. Maintains stock appearance for sled-pullers.
I can see this truck would make it under your stock class rules except for the tires and front weight.......
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Nice looking truck though. I really like the paint job.
