996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

New location to hang turbos in

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Old Nov 14, 2012 | 09:19 AM
  #316  
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Originally Posted by Bisimoto
Those pressures are not high at all, to the contrary. Teams with much more resources that you and I (F1) take advantage of even higher pressures due to the atomization and power benefits.

OEs (including Porsche) now use direct injection (fuel pressures of 1200psi+), with pumps, lines and modern injectors for economy, power, and efficiency.

Maybe I am too much of a geek, who loves and builds fast cars, experiments, and bases info on facts and data...opposed to assumptions. I do not build "bombs", I build fast, reliable cars...while thinking out of the box. Thanks.


DFI systems are completely different than your standard fuel injection system. It's more related to diesel injection than MPFI and in no way should they be compared in operation parameters other than that they're fuel delivery systems with pumps and injectors.

130psi base on injectors not designed to run that pressure is nutty and dangerous on multiple levels.
 
Old Nov 14, 2012 | 09:24 AM
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Originally Posted by RennFab
DFI systems are completely different than your standard fuel injection system. It's more related to diesel injection than MPFI and in no way should they be compared in operation parameters other than that they're fuel delivery systems with pumps and injectors.

130psi base on injectors not designed to run that pressure is nutty and dangerous on multiple levels.
yup special high pressure injectors, mechanical high pressure fuel pumps on the rails. completely different from conventional fuel injection.
 
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Old Nov 14, 2012 | 09:38 AM
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Originally Posted by Tim941NYC
Hold up...Those psi's are high for any non direct injector as a base, then add your 1-1 fpr. You can get away with a lot on a 1200lb N/A motor with little load on it.. Is that why you like the short gears of the N/A tranny? You are using a Holley fuel pump they dont even rate them passed 60psi.. And at the 60psi their biggest pump flows 140gph. hmm. I will not get into math with you and a lot of thing "work" as long as you dont use them. F1 and direct injectors do not run on 12 volt.. Two different animals..
You totally missed my point sir: F1 systems take advantage of the improved atomization...and so do I. I am very curious to the myriad of assumptions around my projects...including the 1200lb comment. Nonetheless, I have had amazing results, long term that is, with higher than 40 psi pressures, and use them exclusively on my builds. Holley ratings are very conservative, to say the least, and I work directly with the manufacturer, and beta tested the prototype units for them. Try experimenting as I have, you will like the results. Thanks.

Originally Posted by RennFab
DFI systems are completely different than your standard fuel injection system. It's more related to diesel injection than MPFI and in no way should they be compared in operation parameters other than that they're fuel delivery systems with pumps and injectors.

130psi base on injectors not designed to run that pressure is nutty and dangerous on multiple levels.
Forgive me if I take offense to the "nutty and dangerous" comments, as I am big on reliability and safety. Once again, the comparisons (dfi and mpfi) were in regard to atomization benefits: power, cooling, et al. In addtion, my n/a setups are at 130psi, and my boosted hovers in the 90psi range, base...and yes, they are designed to run at those pressures! I have done this to race and street cars for over a decade, with championships and happy customers across the globe. Many successful teams have done the same across many forms of motorsports. It may be better if I keep my advantageous modification insights to minimum on forums. These back and forth comments could go on for days. Thanks for you contributions, and back to the original topic.

Nice setup, BTW.
 

Last edited by Bisimoto; Nov 14, 2012 at 09:50 AM.
Old Nov 14, 2012 | 11:53 AM
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Bisimoto I'm in Cali for some IBM Training but about 45 minutes away (mapped last night) but no time to come by and chat with you. Trust me people question everything, and if you don't do it their way you are stupid in their eyes. Don't let them bother you and just keep kicking ***.
 
Old Nov 14, 2012 | 01:23 PM
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back on topic. tim any new videos ?
 
Old Nov 14, 2012 | 01:42 PM
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Originally Posted by Powell
Bisimoto I'm in Cali for some IBM Training but about 45 minutes away (mapped last night) but no time to come by and chat with you. Trust me people question everything, and if you don't do it their way you are stupid in their eyes. Don't let them bother you and just keep kicking ***.

I knocked out enough head gaskets to know how important a REAL fuel system is. I know you did too. we use the same fuel pump for now. I like 20% left in my duty cycle and at least 10% overhead left in pump with A/C on headlights on and radio bumping you fav rap song... When you boost a motor and run psi like that on a 1/4 only ***** out car that you never lift off the gas put on a radio use headlights power windows...ect... You can do alot of things am it "works".
 
Old Nov 14, 2012 | 01:42 PM
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Originally Posted by Steve K ny
back on topic. tim any new videos ?
Waiting on parts
 
Old Nov 14, 2012 | 02:05 PM
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Originally Posted by Tim941NYC
I knocked out enough head gaskets to know how important a REAL fuel system is. I know you did too. we use the same fuel pump for now. I like 20% left in my duty cycle and at least 10% overhead left in pump with A/C on headlights on and radio bumping you fav rap song... When you boost a motor and run psi like that on a 1/4 only ***** out car that you never lift off the gas put on a radio use headlights power windows...ect... You can do alot of things am it "works".
please tell me you dont actually listen to rap lol
 
Old Nov 14, 2012 | 02:07 PM
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Originally Posted by unvmy996
please tell me you dont actually listen to rap lol
cant hear his radio over exhaust anyway lol
 
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Old Nov 14, 2012 | 02:25 PM
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dubstep...
 
Old Nov 14, 2012 | 03:18 PM
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Originally Posted by Powell
Bisimoto I'm in Cali for some IBM Training but about 45 minutes away (mapped last night) but no time to come by and chat with you. Trust me people question everything, and if you don't do it their way you are stupid in their eyes. Don't let them bother you and just keep kicking ***.
+1

There are a few people on the 996t forum that knock people down for trying different things. There are people whom use technology and push the envelope by trying something new and their are the ones that modify something that has already been made. People on this section hate seeing the former, unless ..
 

Last edited by f1crazydriver; Nov 14, 2012 at 03:29 PM.
Old Nov 14, 2012 | 03:39 PM
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+1
I personally know the dedication and hard work that goes into Bisimoto's project(s). He is extremely thorough in his research and methodical in his execution. Kudos to Bisimoto!
 
Old Nov 14, 2012 | 03:40 PM
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Originally Posted by prodigymb
cant hear his radio over exhaust anyway lol
true.
 
Old Nov 14, 2012 | 05:03 PM
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Originally Posted by Bisimoto
You totally missed my point sir: F1 systems take advantage of the improved atomization...and so do I. I am very curious to the myriad of assumptions around my projects...including the 1200lb comment. Nonetheless, I have had amazing results, long term that is, with higher than 40 psi pressures, and use them exclusively on my builds. Holley ratings are very conservative, to say the least, and I work directly with the manufacturer, and beta tested the prototype units for them. Try experimenting as I have, you will like the results. Thanks.



Forgive me if I take offense to the "nutty and dangerous" comments, as I am big on reliability and safety. Once again, the comparisons (dfi and mpfi) were in regard to atomization benefits: power, cooling, et al. In addtion, my n/a setups are at 130psi, and my boosted hovers in the 90psi range, base...and yes, they are designed to run at those pressures! I have done this to race and street cars for over a decade, with championships and happy customers across the globe. Many successful teams have done the same across many forms of motorsports. It may be better if I keep my advantageous modification insights to minimum on forums. These back and forth comments could go on for days. Thanks for you contributions, and back to the original topic.

Nice setup, BTW.
Reading about cars like yours (and Tim's) that go so far beyond standard upgrades and truly explore the possibilities of different configurations by ditching the playbook and starting from scratch is inspiring. A lot of us dream, but you guys execute! Very nice, and congratulations to you BOTH on amazing builds that stretch the imagination! At your level, engineering and art are one.
 
Old Nov 14, 2012 | 05:23 PM
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Originally Posted by Tim941NYC
dubstep...
Guess its better then rap
 


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