we have been using the Percy's adjust-a-jet metering blocks on a Demon 750 for about 2 years now; they work great and make fine tuning the a/f ratio at the track very quick and painless. Only 'drawback' was the initial setup which required mods to our ram air box base because the added metering blocks change the location of the float level adjusting screws further outboard; had to cut two small holes in the base to clear. Also had to modify the fuel hookup for the same reason; float bowls are moved outboard. No big deal, just a little extra work.
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69 Bird w/1970 400 block(409 cubes), #64 heads, hyd. roller, Q-jet by Jeff E., original interior, ps, pdb, th350, and 3.73 gears. Pump gas, street driven muscle. 3800 lbs. race weight. Best, 11.39 @118, my son's car.
79 T/A w/463, Scat crank, Eagle rods, Icon pistons, Lunati solid roller, 262/270, KRE 325 heads, Northwind intake, QF950 carb, full interior, ps, pdb, th350, and 3.73 gears. Pump gas, 3650 lbs. race weight. 10.60 @ 126 so far...
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04-20-2009, 09:48 PM
Adjust-a-jet
Linear Mode
