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What did you do on your Front Engine Dragster TODAY?

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GlennLever:
Went testing yesterday, here is a summery

Goals, smooth out the idle, get closer to the 8.500 index
We played around with the idle, but did not make much improvement on the idle
First run
Air Density 1973
Top Pulley 58  (went bigger here)
Pill 70
Fuel Pressure 81.98
Top end Boost 9.67
60 foot 1.263
¼ mile   8.548  154.42
Comments, for and 8.5 index this is close, it was a dude on the top end, EGT’s right side very low and uneven, feel so sloppy thought I would not be able to run it this slow for the season so made the decision to see if we could get to 8.00 instead of running 8.500 and if the motor couldn’t take it so be it.

Second Run
Air Density 2052
Top pulley 54 (more air, make it leaner)
Pill 70
Fuel Pressure 82.08
Top end Boost 11.30
60 foot 1.222
¼ mile 8.319 156.79
Comment, sounded strong, EGT’s were much more even right side lower than the left, felt like it was working, made the decision to run 8.500 for the rest of the season to save the motor.

Third Run
Air Density 2077
Top pulley 57
Pill 70
Fuel Pressure 79.43
Top end Boost 9.67
60 foot 1.260
¼ mile 8.459 154.85
Comment, sounded ok, want to go faster, but will resist. EGT’s right side over 100 degrees cooler than the left side.


Fourth Run
Air Density 2045
Top pulley 58 (less air)
Pill 75 (less fuel)
Fuel Pressure 76.24
Top end Boost 9.34
60 foot 1.237
¼ mile 8.455 154.47
Comment, sounded ok. EGT’s right side over 200 degrees cooler than the left side. Upper RPM curve is smooth on the graph.

Left head needs to come off and be sealed that same way we did the right after the first start up. It is leaking. New item on turnaround list, check valve cover bolts for tightness, ask me why.

All testing today was done without a shift light as it quit working, all shifts were within 100 RPM of 6300, most were less than 50 off.

Graph below is off the fourth run

wideopen231:
I'll just take a guess at the VC bolts. It like to make hard turn or you have dirty shield and suit or both and suit is dirty in other places.

gregm784:
Word of advice...pull valve covers every pass.  Takes just a minute.  Let's you catch bad stuff early.  You will catch roller lifters failing, bent pushrods, etc.  I run the valves every time we run the car. 

And yes, loose valve cover bolts require lots of simple green

GlennLever:

--- Quote from: wideopen231 on May 05, 2013, 03:41:52 PM ---I'll just take a guess at the VC bolts. It like to make hard turn or you have dirty shield and suit or both and suit is dirty in other places.

--- End quote ---
VC = valve cover, I got it, yes visor got dirty.

GlennLever:

--- Quote from: gregm784 on May 05, 2013, 04:17:18 PM ---Word of advice...pull valve covers every pass.  Takes just a minute.  Let's you catch bad stuff early.  You will catch roller lifters failing, bent pushrods, etc.  I run the valves every time we run the car. 

And yes, loose valve cover bolts require lots of simple green

--- End quote ---
It is on the list now. will do, I'm defiantly still learning.

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