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wuwei75 Samba Member
Joined: March 05, 2014 Posts: 264 Location: OKC
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Posted: Sat Feb 18, 2017 4:44 pm Post subject: HPMX float level question |
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Hi all
Took my hpmx's apart to clean and such before installing and noticed that the floats are at different length from top of carb when seated. They are same for both carbs.
This normal?
Thanks
Brett
_________________ 1974 Super Beetle (Jill)
1972 Fastback (Maude) |
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Mikedrevguy Samba Member

Joined: October 15, 2008 Posts: 2304 Location: No. Idaho
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Posted: Sat Feb 18, 2017 5:40 pm Post subject: Re: HPMX float level question |
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Picture didn't come through, but not sure what you mean?? _________________ 74 1303 (RevBug): plan for German Look
76 914 with 2260
69 Bwajaja
"The wise speak because they have something to say; while the foolish speak because they have to say something." Plato
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wuwei75 Samba Member
Joined: March 05, 2014 Posts: 264 Location: OKC
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Posted: Sat Feb 18, 2017 5:52 pm Post subject: Re: HPMX float level question |
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not sure why pic didn't come through. Hmm.
Anyway, there are two floats, one for each bowl. ON the float closest to pivot, the distance to the top of the carb is 10mm exactly. But on the float furthest away from pivot, the distance is 13mm. It's the same set up on both carbs.
Hopefully that makes sense.
thanks,
brett _________________ 1974 Super Beetle (Jill)
1972 Fastback (Maude) |
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[email protected] Samba Member

Joined: May 17, 2003 Posts: 4875 Location: Harmony, PA
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Posted: Sat Feb 18, 2017 5:56 pm Post subject: Re: HPMX float level question |
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| When setting the level, you measure the point furthest away from the needle/seat. So, in your case, your float level is 13mm. If you're not off-roading, you could probably adjust them a little more so the measurement is closer to 10mm. |
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wuwei75 Samba Member
Joined: March 05, 2014 Posts: 264 Location: OKC
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Posted: Sat Feb 18, 2017 6:30 pm Post subject: Re: HPMX float level question |
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| [email protected] wrote: |
| When setting the level, you measure the point furthest away from the needle/seat. So, in your case, your float level is 13mm. If you're not off-roading, you could probably adjust them a little more so the measurement is closer to 10mm. |
Thanks. In this case since the closest one is at 10 and furthest at 13, I'm assuming I carefully bend arm right at where closest float starts to 'level them out'?
Brett _________________ 1974 Super Beetle (Jill)
1972 Fastback (Maude) |
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mark tucker Samba Member

Joined: April 08, 2009 Posts: 23945 Location: SHALIMAR ,FLORIDA
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Posted: Sat Feb 18, 2017 6:33 pm Post subject: Re: HPMX float level question |
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| it's on a pivot. kinda hard to get them exzact.but it can be done.but it may be too high then. also ploat drop is very importaint.as is making sure the float dosent stick any where. |
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wuwei75 Samba Member
Joined: March 05, 2014 Posts: 264 Location: OKC
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Posted: Sat Feb 18, 2017 6:51 pm Post subject: Re: HPMX float level question |
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A tiny bit of tweak at pivot as mark said and both are at 10mm and then adjusted to 32.5 for max drop. Bada bing bada boom!
Thanks for all the help. Learning as I go!
Brett _________________ 1974 Super Beetle (Jill)
1972 Fastback (Maude) |
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Dale M. Samba Member

Joined: April 12, 2006 Posts: 20892 Location: Just a tiny bit west of Yosemite Valley
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Posted: Sat Feb 18, 2017 8:21 pm Post subject: Re: HPMX float level question |
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Not sure what you are seeing here... As you measure float at end furthermost from pivot..
Dale _________________ “Fear The Government That Wants To Take Your Guns"
"Kellison Sand Piper Roadster" For Street & Show.
"Joe Pody Sandrover" Buggy with 2180 for Autocross (Sold)
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All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ...
Last edited by Dale M. on Sun Feb 19, 2017 8:42 am; edited 2 times in total |
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slalombuggy Samba Member

Joined: July 17, 2010 Posts: 9340 Location: Canada
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Posted: Sun Feb 19, 2017 12:12 am Post subject: Re: HPMX float level question |
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Do not bend the arm to level them out.
Just measure from the float to the gasket at the furthest point. If you bent the arm straighten it out or your float level will be too high and you will flood your carbs.
brad |
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wuwei75 Samba Member
Joined: March 05, 2014 Posts: 264 Location: OKC
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Posted: Sun Feb 19, 2017 5:02 am Post subject: Re: HPMX float level question |
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| slalombuggy wrote: |
Do not bend the arm to level them out.
Just measure from the float to the gasket at the furthest point. If you bent the arm straighten it out or your float level will be too high and you will flood your carbs.
brad |
Are you suggesting I shouldn't adjust it at the pivot to make furthest point 10mm?
I verified when I adjusted at pivot that both floats were 10mm.
Thanks
Brrtt _________________ 1974 Super Beetle (Jill)
1972 Fastback (Maude) |
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67rustavenger Samba Member

Joined: February 24, 2015 Posts: 11498 Location: Oregon
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Posted: Sun Feb 19, 2017 8:18 am Post subject: Re: HPMX float level question |
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Adjust the float level at the furthest point away from the pivot to 10mm with the gasket in place.
Just bend the little tab that the needle rides against.
FWIW I have mine set at 11.4mm. My engine seems to run better at that setting.
Good Luck.
| wuwei75 wrote: |
| slalombuggy wrote: |
Do not bend the arm to level them out.
Just measure from the float to the gasket at the furthest point. If you bent the arm straighten it out or your float level will be too high and you will flood your carbs.
brad |
Are you suggesting I shouldn't adjust it at the pivot to make furthest point 10mm?
I verified when I adjusted at pivot that both floats were 10mm.
Thanks
Brrtt |
_________________ I have learned over the years.
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wuwei75 Samba Member
Joined: March 05, 2014 Posts: 264 Location: OKC
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Posted: Sun Feb 19, 2017 9:18 am Post subject: Re: HPMX float level question |
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Awesome. That's what I did. We shall see how it goes. The joys of learning dual carbs.
😂😂😂
| 67rustavenger wrote: |
Adjust the float level at the furthest point away from the pivot to 10mm with the gasket in place.
Just bend the little tab that the needle rides against.
FWIW I have mine set at 11.4mm. My engine seems to run better at that setting.
Good Luck.
| wuwei75 wrote: |
| slalombuggy wrote: |
Do not bend the arm to level them out.
Just measure from the float to the gasket at the furthest point. If you bent the arm straighten it out or your float level will be too high and you will flood your carbs.
brad |
Are you suggesting I shouldn't adjust it at the pivot to make furthest point 10mm?
I verified when I adjusted at pivot that both floats were 10mm.
Thanks
Brrtt |
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_________________ 1974 Super Beetle (Jill)
1972 Fastback (Maude) |
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