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tcracing
Samba Member
Joined: August 12, 2022
Posts: 10
Location: Rocklin
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 Posted: Mon Dec 05, 2022 3:32 pm Post subject: Engine Identity |
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I picked up this 66' beetle and starting to tear it apart to make sure everything is good to go. I was told by the PO that it has a 1600cc motor. The serial # suggests it's a 1200. The serial # is D1153955. Am i reading this correctly?
D1=D0, D1 1966-1985 1200cc 34bhp DIN (German)
40HP SAE For Mexican made 1200s after January, 1978
Thanks
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KTPhil 
Samba Member
Joined: April 06, 2006
Posts: 33991
Location: Conejo Valley, CA
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| Posted: Mon Dec 05, 2022 3:43 pm Post subject: Re: Engine Identity |
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That engine number looks more like its from August 1973 or so (1974 model year).
Non-USA models could be had with the smaller displacement engines.
I'm not an expert on this, but I think they made these "special" 1200s from the same block, so externally it will look like a 1600. And in that case, a previous owner may have fitted 1600 P&Cs.
Please post up some photos, showing the intake manifold where it meets the heads, and the underside to see if it has one oil pressure relief valve or two. |
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gt1953
Samba Member
Joined: May 08, 2002
Posts: 13846
Location: White Mountains Arizona
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| Posted: Mon Dec 05, 2022 5:21 pm Post subject: Re: Engine Identity |
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I have a D engine case in my 72. The case is a dual relief, it is a stock 1600 dual port engine.
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Volkswagen: We tune what we drive.
Numbers Matching VW's are getting harder to find. Source out the most Stock vehicle and keep that way. You will be glad you did.
72 type 1
72 Squareback
({59 Euro bug, 62, 63, 67, 68, 69, 73 type ones 68 & 69 type two, 68 Ghia all sold}) |
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tcracing
Samba Member
Joined: August 12, 2022
Posts: 10
Location: Rocklin
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| Posted: Tue Dec 06, 2022 9:26 am Post subject: Re: Engine Identity |
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| gt1953 wrote: |
| I have a D engine case in my 72. The case is a dual relief, it is a stock 1600 dual port engine. |
Thanks for the info. I will take some photos and look to verify what I have.
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glutamodo
The Android
Joined: July 13, 2004
Posts: 26307
Location: Douglas, WY
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| Posted: Tue Dec 06, 2022 12:38 pm Post subject: Re: Engine Identity |
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From model year 1970 to the end of German production, 1200 engines shared the same engine block as the bigger engines, switching to cylinders with a larger diameter on their base to make them fit, and having the shorter stroke crankshaft. They can be upgraded if the crankshaft and engine studs are changed to ones that match the new application.
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Andy T.
IMAGE NOTE: It has been noted that Chrome based browsers may have issues in displaying my vast image library, which use non-secure links and are on an FTP server. Images should still be viewable if the link is clicked though.
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tcracing
Samba Member
Joined: August 12, 2022
Posts: 10
Location: Rocklin
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| Posted: Mon Dec 19, 2022 9:36 am Post subject: Re: Engine Identity |
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Thanks for everyone's help. It does have a dual relief case and dual port heads.
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Wily
Samba Member
Joined: September 11, 2022
Posts: 80
Location: Belgium
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| Posted: Mon Dec 19, 2022 10:58 am Post subject: Re: Engine Identity |
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i have a tool and here you go!
1974 Type 1
01.08.1973 / 31.12.1973
1200cc
25 kW / 34 PK |
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ashman40
Samba Member
Joined: February 16, 2007
Posts: 15982
Location: North Florida, USA
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| Posted: Mon Dec 19, 2022 12:36 pm Post subject: Re: Engine Identity |
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| tcracing wrote: |
| I picked up this 66' beetle and starting to tear it apart to make sure everything is good to go. I was told by the PO that it has a 1600cc motor. The serial # suggests it's a 1200. The serial # is D1153955. Am i reading this correctly? |
I take it from your description that you doubt the PO when they say the engine is a 1600cc? I would point out that the "D" on the case indicates it came from the factory in the '70s(?) as a 1200cc engine. That is all. It does not mean it is STILL a 1200cc engine. In the nearly 50yrs since it was built in the factory was it rebuilt into a 1600cc? There is a good possibility it was. Are there any indications your engine may have been rebuilt?
How can you tell? Pull a head and measure the piston diameter and the stroke. Do the calculation and confirm the displacement. Without this, all you can say is it STARTED life as a 1200cc.
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AshMan40
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'67 Beetle #1 {project car that never made it to the road  }
'75 Beetle 1200LS (RHD Japan model) {junked due to frame rot}
'67 Beetle #2 {2019 project car - Wish me luck!} |
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61SNRF
Samba Member
Joined: March 29, 2009
Posts: 4657
Location: Whittier 90602
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| Posted: Mon Dec 19, 2022 1:18 pm Post subject: Re: Engine Identity |
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As a sidebar, in the early 80's a place called S.I.R. in Orange County, CA was importing pallet after pallet of core engines from Europe.
Some were 1200, some were 1300 and others 1600's.
There may well have been other importers doing the same.
As mentioned the best way to know for certain what's inside is take it apart for inspection and measurement.
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-Bruce
An ounce of prevention is worth a pound of cure. |
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