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John cilia
Samba Member
Joined: May 03, 2016
Posts: 140
Location: Toronto, Canada
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 Posted: Wed Dec 04, 2019 12:06 pm Post subject: 25 hp motor question |
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Does anyone know what goes in the small bottom hole of block?
Iam peiceing this motor together and wondering what parts go into it.
Thanks
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finster
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Joined: May 26, 2012
Posts: 7935
Location: north o' the border
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| Posted: Wed Dec 04, 2019 12:42 pm Post subject: Re: 25 hp motor question |
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do you mean the hole at bottom right? crankcase plug and has a slotted face
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John cilia
Samba Member
Joined: May 03, 2016
Posts: 140
Location: Toronto, Canada
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| Posted: Wed Dec 04, 2019 12:49 pm Post subject: Re: 25 hp motor question |
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So there are no springs or other parts behind it ?
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Currently restoring a 1953 11g in metallic blue.
The most important thing on a Tombstone is the Dash between the 2 dates. |
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finster
Samba Member
Joined: May 26, 2012
Posts: 7935
Location: north o' the border
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| Posted: Wed Dec 04, 2019 1:22 pm Post subject: Re: 25 hp motor question |
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I've never removed one but pretty sure it's just a plug
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sgmalt46
Samba Member
Joined: April 20, 2005
Posts: 1296
Location: south san francisco
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| Posted: Wed Dec 04, 2019 4:18 pm Post subject: Re: 25 hp motor question |
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| John cilia wrote: |
| So there are no springs or other parts behind it ? |
nope nothing behind it.
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John cilia
Samba Member
Joined: May 03, 2016
Posts: 140
Location: Toronto, Canada
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| Posted: Wed Dec 04, 2019 4:22 pm Post subject: Re: 25 hp motor question |
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Thanks for the good info.
John
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Currently restoring a 1953 11g in metallic blue.
The most important thing on a Tombstone is the Dash between the 2 dates. |
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mikeandkirsti
Samba Member
Joined: June 16, 2009
Posts: 284
Location: EU
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| Posted: Thu Dec 05, 2019 1:34 am Post subject: Re: 25 hp motor question |
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| The plug is tapered and you can use the original VW plug with a provision for a large screwdriver or buy a modern tapered plug in the same size (available from Würth in Europe) with a provision for a hex key wrench. |
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blood
Samba Member
Joined: October 01, 2015
Posts: 50
Location: nashville tn
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| Posted: Sun Dec 29, 2019 5:51 pm Post subject: Re: 25 hp motor question |
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| I think this opening is a drilling for the oil pickup tube to spigot into. Also on the 25 hp engine there is no internal opening to allow the oil in this timing gear area to drain back to the main sump. I believe that by the time 36 hp engines were built, a drain back passage had been cut into one of the case halves. I would also guess that would be a OK modification to perform on those early 25 hp engines. That would allow all oil to be removed during oil changes. Please chime in if some has had experience in this. |
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Zwitterkafer
Samba Member
Joined: November 17, 2007
Posts: 878
Location: Lanark County, Ontario, Canada
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| Posted: Sun Dec 29, 2019 7:19 pm Post subject: Re: 25 hp motor question |
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The oil drain-back passage question was recently answered in another thread:
PR entry reads: Jan 1950, from chassis 1-0138765, unit # 170086:
Crankcase: "Now: Oil can be completely drained off (passage through timing gear chamber)"
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