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70deluxebus Samba Member
Joined: December 21, 2004 Posts: 100 Location: Heflin AL
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Posted: Mon Sep 26, 2011 1:37 pm Post subject: 25 & 36 hp fuel pump |
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Does anyone know the difference and how to tell them apart? Thanks |
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36hplandspeedracer Samba Member
Joined: January 30, 2006 Posts: 847 Location: Ivins, Utah
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Posted: Mon Sep 26, 2011 2:52 pm Post subject: |
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Lindy, contact Ed Fall at Vintage Werks for the specific details. He is the premier rebuilder of these components and can supply you with specific details for indentification.
[email protected]
I hope this is helpful..................
Burly |
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henry roberts Samba Member
Joined: February 24, 2003 Posts: 1276 Location: australia
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Posted: Mon Sep 26, 2011 4:30 pm Post subject: |
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here is a rough run down, the emphasis being on rough.
split etc till 1953? flat top. towards the end of this style they changed from an 8mm fuel line to a 6mm fuel line, there were probably heaps of other changes.
till mid 1955 wave top with drain screw on the side:
a few months? only mid/late 55, wave top with the boss for the drain screw but not tapped/fitted with the screw.
sorry can't find a pic atm.
56 wave top with no screw: edit, this may not be an actual production model.
circa 57, ribbed top with short outlet:
changed in 58? to ribbed top with tall outlet:
the last style
some useful threads:
54/5 engine thread:
http://www.thesamba.com/vw/forum/viewtopic.php?t=179439
58/9 thread:
http://www.thesamba.com/vw/forum/viewtopic.php?t=401420
Last edited by henry roberts on Mon Sep 26, 2011 10:54 pm; edited 1 time in total |
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EverettB Administrator
Joined: April 11, 2000 Posts: 69827 Location: Phoenix Metro
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Posted: Mon Sep 26, 2011 8:29 pm Post subject: |
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Nice breakdown.
Some more info:
53s are 6mm because they have the carburetor with the accelerator pump.
henry roberts wrote: |
56 wave top with no screw:
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I've never heard that, I think that might just be a mismatched top and bottom.
For example, the bottom wore out so it was replaced while the original top was retained. _________________ How to Post Photos
Everett Barnes - [email protected] | My wanted ads
"Water is the only drink for a wise man" | "Communication prevents complaints"
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henry roberts Samba Member
Joined: February 24, 2003 Posts: 1276 Location: australia
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Posted: Mon Sep 26, 2011 10:10 pm Post subject: |
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i could be wrong, it's been known to happen |
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70deluxebus Samba Member
Joined: December 21, 2004 Posts: 100 Location: Heflin AL
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Posted: Tue Sep 27, 2011 6:44 am Post subject: Thanks guys. |
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Appreciate the help. |
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WVWZ Samba Member
Joined: May 22, 2002 Posts: 40 Location: Lakewood, Ca
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Posted: Thu Mar 17, 2016 3:46 pm Post subject: Re: 25 & 36 hp fuel pump |
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Nice write up, I've been looking up and down thesamba and can't find a thread on how to rebuild a 36hp fuel pump. Can anyone here direct me to the proper thread? Thank you. _________________ looking for a 55 euro! |
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EverettB Administrator
Joined: April 11, 2000 Posts: 69827 Location: Phoenix Metro
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oldbusboy Samba Member
Joined: June 25, 2006 Posts: 604 Location: Bowen Island, BC Canada
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Posted: Thu May 18, 2017 10:03 pm Post subject: Re: 25 & 36 hp fuel pump |
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If I currently have stock 6mm fuel pump and want to run a Mann fuel filter that is 8mm how can I make the input line into the pump 8mm so I can use the filter?
Trevor
_________________ 1968 porsche |
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Mr. OGPaint Samba Member
Joined: September 24, 2010 Posts: 823 Location: Oregon
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Posted: Fri May 19, 2017 1:48 pm Post subject: Re: 25 & 36 hp fuel pump |
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Perhaps a brass adapter bushing similar to the ones VW offered for retrofitting 6mm components on cars with 8mm fuel systems....same concept but in reverse. _________________ https://instagram.com/mr.ogpaint
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Patrick Hall |
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Peter_Plade Samba Member
Joined: January 09, 2005 Posts: 551 Location: Denmark
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Posted: Sat May 20, 2017 12:57 pm Post subject: Re: 25 & 36 hp fuel pump |
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HerrLowlight wrote: |
If I currently have stock 6mm fuel pump and want to run a Mann fuel filter that is 8mm how can I make the input line into the pump 8mm so I can use the filter?
Trevor
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If you comes up with a solution please post it here as I'm planning the to the same thing. _________________ http://vw-bluehats.blogspot.com/ |
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Suboval Samba Member
Joined: September 15, 2003 Posts: 794
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Posted: Mon May 22, 2017 12:09 pm Post subject: Re: 25 & 36 hp fuel pump |
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Mr. OGPaint wrote: |
Perhaps a brass adapter bushing similar to the ones VW offered for retrofitting 6mm components on cars with 8mm fuel systems....same concept but in reverse. |
https://www.thesamba.com/vw/forum/viewtopic.php?t=478666&highlight=fuel+pump+adapter _________________ It all works on paper.
There's two things we learn from history:
1.) History repeats itself.
2.) We don't learn from history. |
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