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

Another Fuel pump upgrade question

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  #16  
Old 09-06-2011 | 06:24 PM
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Originally Posted by jonty
The 340 will not support much HP though?
Sure it will, but that also depends on inj size, duty cycle, lines...etc..etc.

Lots of related factors, E85 requires 30% more fuel in my case; so I'd run at least 1100cc injectors.
 
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Old 09-06-2011 | 06:36 PM
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The largest concern I had with a single in tank pump is the two sumps in the turbo tank, drawing air is just as harmful as a pump failing/under sized. You can mount the weldon pump on rubber isolators and run the speed controller they sell. One step step further would be to trip the full speed of the pump off a boost switch. I like the school of KISS.... Keep It Simple Stupid! So mine runs full tilt all the time. My regulator and return line where sized to handle the fuel flow. Good luck with what ever route you go. Having race cars you know what you need to do. With street cars its all to often what can I get away with for now, "I only do a pull once in a blue moon the other 99% of the time its stop and go or parkway driving" RIGHT! not after the feeling you get from full boost. It is worse then drugs.
 
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Old 09-06-2011 | 06:37 PM
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Originally Posted by vntperformance
Sure it will, but that also depends on inj size, duty cycle, lines...etc..etc.

Lots of related factors, E85 requires 30% more fuel in my case; so I'd run at least 1100cc injectors.
So it will support 700 whp?
 
  #19  
Old 09-06-2011 | 06:39 PM
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Originally Posted by jonty
So it will support 700 whp?
Your going to have to upgrade the pump in the tank as well for that much power...And it also depends on what fuel you plan to run, cause 700whp on pump gas ain't happening.
 
  #20  
Old 09-06-2011 | 06:44 PM
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That was the purpose of the thread to discuss any single pump options, there are a myriad of dual pump options available.
 
  #21  
Old 09-06-2011 | 07:12 PM
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Look at the specs for the DW301. At 13.5v, 30 psig, it will flow 335 ltr/hr or 1060 bhp. It's a high flow pump designed to deliver high power from ethanol which requires greater fuel. It should be able to handle your gas needs at 700 whp with the right set-up.

PS Just used their calc function. It will be close, may not quite get there.
 

Last edited by TTdude; 09-06-2011 at 07:27 PM.
  #22  
Old 09-06-2011 | 08:21 PM
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Originally Posted by vntperformance
Your going to have to upgrade the pump in the tank as well for that much power...And it also depends on what fuel you plan to run, cause 700whp on pump gas ain't happening.
I thought a few of the big HP kits (Switzer's P800, 911Tuning's Ski850, et al) were making high, high 600's at the wheels on 93 pump... pretty darn close to 700 whp, no?
 
  #23  
Old 09-06-2011 | 08:32 PM
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Originally Posted by c32AMG-DTM
I thought a few of the big HP kits (Switzer's P800, 911Tuning's Ski850, et al) were making high, high 600's at the wheels on 93 pump... pretty darn close to 700 whp, no?
We run big turbos ( 30r type) with a complete 1200 HP kit including the blow thru MAF, Y pipe, hUge ICs, intake above ICs, 2nd pump, etc. ( if you do 35rs and build motor), and I have never seen 700 whp on pump gas... can it be done ? probably... do I recommend it? no... at 1 bar the car made 600whp... with a great curve... at 1.45 it made 700whp but you need better gas...
We look at it from safety point of view too... not just maximum power....
and dont look at just peak numbers.. because a 600 whp car can beat up a 700 whp car if it hits 700 at 7000 rpms and has nothing until then....
 
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  #24  
Old 09-06-2011 | 08:46 PM
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I never mentioned pump gas you are jumping to conclusions, can we keep it on topic.
 
  #25  
Old 09-06-2011 | 08:53 PM
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Originally Posted by MARKSKI@911tuning
We run big turbos ( 30r type) with a complete 1200 HP kit including the blow thru MAF, Y pipe, hUge ICs, intake above ICs, 2nd pump, etc. ( if you do 35rs and build motor), and I have never seen 700 whp on pump gas... can it be done ? probably... do I recommend it? no... at 1 bar the car made 600whp... with a great curve... at 1.45 it made 700whp but you need better gas...
Great info, thanks.

We look at it from safety point of view too... not just maximum power....
and dont look at just peak numbers.. because a 600 whp car can beat up a 700 whp car if it hits 700 at 7000 rpms and has nothing until then....
Very true, excellent point as well. Thanks Markski.
 
  #26  
Old 09-06-2011 | 09:48 PM
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Originally Posted by jonty
I never mentioned pump gas you are jumping to conclusions, can we keep it on topic.
What's wrong w/all around info?
 
  #27  
Old 09-06-2011 | 09:57 PM
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Originally Posted by vntperformance
I want to be able to run e85 all the time.
Me too. Can you PM me what you've found as far as setups? I haven't seen much as far as tuners pushing a particular "E85 Kit" as much as folks telling me they can build a setup for me. Hell at this point -- I can't even gauge what kind of $ investment we're talking. Pump+injectors+tune?

Thanks!
Henry
 
  #28  
Old 09-06-2011 | 11:53 PM
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Originally Posted by vr4henry
Me too. Can you PM me what you've found as far as setups? I haven't seen much as far as tuners pushing a particular "E85 Kit" as much as folks telling me they can build a setup for me. Hell at this point -- I can't even gauge what kind of $ investment we're talking. Pump+injectors+tune?

Thanks!
Henry

Sent!
 
  #29  
Old 09-07-2011 | 09:03 PM
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Originally Posted by TTdude
Look at the specs for the DW301. At 13.5v, 30 psig, it will flow 335 ltr/hr or 1060 bhp. It's a high flow pump designed to deliver high power from ethanol which requires greater fuel. It should be able to handle your gas needs at 700 whp with the right set-up.

PS Just used their calc function. It will be close, may not quite get there.

You need to add the boost psi you will be running to you fuel psi then see the flow rate at that psi. You will see the pumps dont flow so much.
 
  #30  
Old 09-07-2011 | 09:09 PM
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Originally Posted by Tim941NYC
You need to add the boost psi you will be running to you fuel psi then see the flow rate at that psi. You will see the pumps dont flow so much.
Yes, I know, thanks. This is why I added my PS. It will be close. The right combination of fpr and injector may do it. The DW301s flow about the same as a Bosch044.
 
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