[gorskined]

Hello all
i was wondering what is an acceptable amount of fuel variance between cylinders?


a little back ground i have a 76 3.0l row turbo everything new or rebuilt.. The motor for the most part is built to stock with an ic and a evergreen k-27 raptor turbo. I am not looking for Hp more interested in drivability and longevity. This will be my fair weather fun driver . I had a few setback but I finally have things sorted for the most part .
so back to my original question the newly rebuilt non adjustable 76 FD has uneven flow between cylinders. I tested by collecting the fuel in glass beaker. Then measured using a 300ml graduated cylinder I rounded the meniscus up or down to the nearest 5ml mark, like chemistry class allover again.
I ran this test with all different flow condition about 20 times over the last few days low flow, high flow and varied flows high to low, low to high. Each test I shoot for collecting about 200ml of fuel .
There is between 15 and 20 ml variance with a 200ml collection , cylinder #6 is always has the highest flow. The test was run with bran new right out of the box injectors. i even swapped around the injectors to see if it made a difference (no difference). the motor runs and sounds great my AFR # are good the WUR pressures are spot on. I have yet to road test the car. I'm concerned with the fuel variance.

Here are a few example of my test results ,so should I be concerned ?

Thanks

....full flow.....high /low.....low
#1..180ml.......225ml.......205ml
#2..180ml.......225ml.......200ml
#3..175ml.......220ml.......205ml
#4..175ml.......230ml.......205ml
#5..180ml.......220ml.......195ml
#6..190ml.......240ml.......215ml