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IMG_6126
2013 05 06 More of Lake Bridgeport
Date: 05/06/2013
Views: 5598
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IMG_6139
2013 05 13 A very large quarry near Bridgeport.
Date: 05/13/2013
Views: 6080
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IMG_6143
2013 05 13 There in front of the wing you can see the Bridgeport Airport.
Date: 05/13/2013
Views: 7664
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IMG_6146
2013 05 13 More North Texas ranch land.
Date: 05/13/2013
Views: 6912
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IMG_6153
2013 05 13 The Gainesville Airport
Date: 05/13/2013
Views: 6177
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IMG_4309
N914XL as it has been flying recently. Soon there will be wheel pants which will call for another picture.
Date: 12/19/2012
Views: 5984
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IMG_3265
Herein lies the culprit! The change from flat fiber washer to "O" ring. When the "O" ring is applied to the attachment screw and tightened to the torque spec, the bottom of the fuel bowl is deformed upward. This deformation reduces
Date: 05/30/2012
Views: 37383
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IMG_3438em
There was a bit more work with the Billet pump package, but it proved not to be the problem. Moving on, OK, not the fuel system. Try running the engine as a normally aspirated engine. Remove the connection between the turbo and airbox. Believe it or
Date: 07/17/2012
Views: 9852
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IMG_3538em
I removed the entire airbox to to check all the plumbing connections.
Date: 07/30/2012
Views: 8961
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IMG_3540em
While the airbox was off, I again check all the pressure hoses to the carbs. Oh, what have we here. BIG leaks in the pressure lines to the carb bowls. Two leaks like this. Not observed before because the fittings were tied to that fuel line and the sp
Date: 07/30/2012
Views: 9404
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IMG_3571em_r
Pulled all the pressure hose off again and check for leaks and continuity. All OK, no problems at all.
Date: 08/01/2012
Views: 8890
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IMG_3577post
Next test, connect high pressure port from airbox directly to the "T" into the carb float bowl pressure lines and try a run. Still didn't work. Same smooth up to 4200/4300 RPM, smooth drop to 3200 RPM, smooth acceleration up to 4300 RPM, drop
Date: 08/03/2012
Views: 11978
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IMG_3334post
Requests to check the fuel delivery system. Started with the gascolator. Any large quantity of crap in the gascolator? Here's the fuel from the gascolator in the test vessel. A tiny bit of black crud from who knows what. But not enough to cause a pro
Date: 06/13/2012
Views: 6779
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IMG_3367post
Request for fuel pressure input to the fuel pressure regulator. Installed a fuel pressure sensor on the input to the regulator. So now we have differential pressure out of the regulator and pressure into the regulator.
Date: 07/02/2012
Views: 6213
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IMG_3374em
Run the engine, check the pressures. All seems OK. 5 lbs into the regulator and 3.8 lbs out of the regulator. This is with the Billet mechanical pump. Which became the next source of concern.
Date: 07/04/2012
Views: 6011
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IMG_3384em
Remove the Billet pump from the circuit. Run with only electric pump. Input line connected directly to the regulator. At the same time, remove airbox pressure from differential gauge to get absolute fuel pressure out of regulator.
Date: 07/09/2012
Views: 6938
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IMG_3392
Differential pressure with engine running on electric pump: 3.8 lbs
Date: 07/09/2012
Views: 6566
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IMG_3391em
Input fuel pressure: 5 lbs. Just like with the Billet pump. Next request was for a fuel flow test. Reconnected the Billet pump to the fuel circult. One electric pump running fuel through the billet pump produced 1 gallon of fuel in a bit less than 3 m
Date: 07/09/2012
Views: 9421
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IMG_3290post
Here you can see where the gasket was cut by the bowl where it wasn't properly located.
Date: 05/31/2012
Views: 6111
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IMG_3301post
The issue being the softness and flexibility of the gasket material. Makes it difficult to ensure proper location while reattaching the bowl. The gasket is probably fine for a carb rebuild where you are doing it on the bench and can turn the carb over f
Date: 06/01/2012
Views: 6408
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