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Author Topic: Roots type and EFI 5.0?  (Read 14181 times)
wywindsor
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Location: casper wyoming

« Reply #15 on: June 11, 2009, 08:01:17 pm »

I would suggest finding a whipple 200r or 200ax ,possibly one size bigger or smaller depending on how much boost you want to run.Then build the intake yourself.You'll save lot's of money for other stuff like fuel managment and ignition parts.whipple sells different length snouts and you'll get the satisfaction of not buying all bolt on parts.Not  bad ,but I like to do more myself.Unlike most chevy guys..
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HeadDoctor
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Location: Fayetteville Georgia

« Reply #16 on: November 06, 2010, 10:31:32 am »

With an FI set up and either a roots or a screw is that they both have enherent internal leakage problems that centrifugal and rotary vane pumps don't have.

If you notice on all the race set ups they all run fuel through the blower - why?
1) To keep it sealed up
2) To kool the air temp - positive pumps make a lot of heat

Next - Getting the FI system to put fuel in the motor when it needs it at low speed is very difficult, the cure for that is to put an axuillory fuel nozzel or 2 spraying into the inlet side of the blower. One install I saw at a friends dyno shop in Alphretta he calculated the nozzel size he needed for the engine and put 50% of through the blower and 50% through the manifold and the drivability was great. 


Denny
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gtvert90
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« Reply #17 on: November 06, 2010, 10:50:04 am »

Awesome read I forgot about this thread  since it was started over 4 years ago and hasn't been active in a year and a half Roll Eyes Roll Eyes Roll Eyes
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Phil.
88foxgt
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« Reply #18 on: November 06, 2010, 11:24:08 am »

Awesome read I forgot about this thread  since it was started over 4 years ago and hasn't been active in a year and a half Roll Eyes Roll Eyes Roll Eyes

still good info......
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