Bracket Talk
APD secondary float setting?

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June 14, 2018, 09:59 AM
Jason Compton
APD secondary float setting?
Anyone know what the float setting on an APD 4150 billet enforcer secondary should be? Have had no luck getting through their phone line the last few days. I have been setting it with the sight glass, but I would prefer to set it correctly. Thanks.


Jason Compton
June 14, 2018, 10:43 AM
67SS
With the bowl upside down set the float so a 3/8 drill bit will slide between the top of the float and roof of the bowl. Some also set using a 7/16 drill bit, which would give a lower float level. I set mine somewhere in between around 13/32.


Chad Harris
June 14, 2018, 10:58 AM
Lenny5160
quote:
Originally posted by 67SS:
With the bowl upside down set the float so a 3/8 drill bit will slide between the top of the float and roof of the bowl. Some also set using a 7/16 drill bit, which would give a lower float level. I set mine somewhere in between around 13/32.


Yep. I use the 3/8 bit for reference but I like to go a flat or two lower than that.


Tony Leonard
June 14, 2018, 01:12 PM
00 DEAD ON
Randy at APD told me to use a 5/16” drill bit. Good luck


Brian Mollison
2009 RaceTech Dragster
2020 Sumerduck Dragway VA Top ET Champion
2017 Sumerduck Top ET & SSS Track Champion
2017 MAC Top ET Track Champion
2009 Sumerduck Dragway Va Top ET & IHRA SSS Track Champion
2008 IHRA Division 1 Top ET Bracket Final Runner-up
2007 Colonial Beach Dragway Top ET Track Champion
June 14, 2018, 06:46 PM
Jason Compton
not sure if any of those measurements will work. If I could figure out how to post a pic,I could show the float is much smaller than the ones I'm used to. I finally got through to somebody at APD and he said 1.004 from the top of bowl on the pump side to the perimeter line on the float. Thing is there is no line!! Arrrggh. I'll try again tomorrow or just go back to using the sight glass.


Jason Compton