'D' case question

awesome dude · Posted: Tue Apr 15, 2014 2:22 pm Post subject: 'D' case question

So i got a long block with a 'D' case and 373 heads (mind you the whole reason i bought it in the first place was for the heads)..but when i took the heads off and looked and the pistons they say 84.45 on them.

I thought that the 'D' case was a 40hp case not one of the later ones.

what am I missing here?

cru62 · Posted: Tue Apr 15, 2014 2:45 pm Post subject:

Upgraded P & Cs? That is kind of standard for 40hp. Check the crank. It may be 69mm.
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awesome dude · Posted: Tue Apr 15, 2014 3:06 pm Post subject:

can you could put 85.5 in a 40hp case?

andy198712 · Posted: Wed Apr 16, 2014 12:34 am Post subject:

my D case is dual relief and will take 1600 barrels...
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glutamodo · Posted: Wed Apr 16, 2014 8:20 pm Post subject:

VW1200 Model D blocks from August 1969 up until the end of production in Germany in January 1978, were pretty much the same as their 1300/1500/1600 counterparts and received the same upgrades. It is not uncommon to find D-blocks from that era that have had a 69mm crankshaft/rods dropped in along with matching pistons/cylinders/heads.

-Andy

awesome dude · Posted: Wed Apr 16, 2014 11:52 pm Post subject:

crap!

thanks for the help.

glutamodo · Posted: Thu Apr 17, 2014 3:55 am Post subject:

I just re-read your first post - you said you have 84.45mm pistons? Was that a typo then? (Back in the day, VW used to sell oversize pistons to go along with two oversize bores on the cylinders - but those were 0.5 and 1.0mm over, so the closest you'd get would be 84.0mm (probably 83.95mm) for the 1500 engine.)

awesome dude · Posted: Sat Apr 19, 2014 7:28 pm Post subject:

oops! 85.45mm

Damian Gomez · Posted: Mon Jun 02, 2014 7:57 pm Post subject:

I have a 40 hp with a D stamped on it, the number is 6464792 how do I know if its a duel relief? or what year it is?
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63' beetle, stock 1200cc, 12v, daily driver but a project

glutamodo · Posted: Mon Jun 02, 2014 8:44 pm Post subject:

You sure it's a D or a WD? VW did not use the letter D until during model year 1965... and your number is for model year 1962... (probably Feb 1st or 2nd 62)

Pictures are always nice to have when asking such questions.

Dual relief didn't start for many years after that. Your engine should only have the one relief valve by the oil pump - which should have 6mm studs (unless it was reworked - I have such a VW-remanufactured block in my 62 - but it also has a 2nd engine number off to the side of the block from the original number)

Your engine should also have the small round oil filler hole in the top of the block - shown here in comparison to the design started for model year 1965:

Image may have been reduced in size. Click image to view fullscreen.

Now....

Far below is a photo I took, that I don't quite understand...

Progressive Refinements (VW's own in-house "book of changes") says that the D-code was added at engine number 9247364...

and between then and the end of Model Year 1965, this letter D used with a VW emblem, BELOW the main engine number, as in this example:

However, prior to that time, VW usually had a production line "W" stamp in that general area... no one knows what it means, but it was a W followed by a letter or number. Like this:

Well, I have this engine number that was produced after the previously listed engine number when the "D" was supposed to be introduced, but it doesn't have the "VW D" as shown above, it still has the W stamp, followed by a D:

Anyway, what does your engine look like in comparison to those examples?

-Andy

Damian Gomez · Posted: Mon Jun 02, 2014 8:53 pm Post subject:

heres a pic of the engine number area,
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63' beetle, stock 1200cc, 12v, daily driver but a project

Damian Gomez · Posted: Mon Jun 02, 2014 8:57 pm Post subject:

I have all the original receipts from the two previous owners, none for a rebuild and the guy I bought it from said it was a 1600, probably just said that to sell it though
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63' beetle, stock 1200cc, 12v, daily driver but a project

glutamodo · Posted: Mon Jun 02, 2014 9:03 pm Post subject:

Cool, thanks for the photo...

Personally, I think that is a blank dealer replacement new block that was custom stamped with a previous engine number. Those numerals do not look like the ones the VW plant was using, and they are they are slanted. The "D" doesn't have either a W or a VW before it.

I would check the top of the block for a painted on "KD" mark, which was found on new replacement blocks.

That example is a good one - an engine that got custom restamped with an "impossible" number (36HP) and one that later got remanufactured by VW and received a 2nd VW-Recycle engine number off to the side:

Damian Gomez · Posted: Mon Jun 02, 2014 9:13 pm Post subject:

could I see this by removing the engine tin? cause I drive the car daily
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63' beetle, stock 1200cc, 12v, daily driver but a project

glutamodo · Posted: Mon Jun 02, 2014 9:24 pm Post subject:

Those particular KD stamps would have been visible between the fan shroud and the firewall - might need a strong neck and a flashlight though to see it, and that's only if the block isn't covered with grime!

Damian Gomez · Posted: Mon Jun 02, 2014 9:39 pm Post subject:

just went to go check, block was pretty clean, but no stamps at all.
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63' beetle, stock 1200cc, 12v, daily driver but a project

glutamodo · Posted: Mon Jun 02, 2014 9:50 pm Post subject:

Look for 6mm or 8mm oil pump studs.

Dual relief - I doubt it but here's where they are if there are two of them:

Damian Gomez · Posted: Mon Jun 02, 2014 10:04 pm Post subject:

is this under the car near where you change the oil?
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63' beetle, stock 1200cc, 12v, daily driver but a project

glutamodo · Posted: Mon Jun 02, 2014 10:16 pm Post subject:

ermmm.. yes, the bottom of the engine block facing the ground. You can see the oil strainer hole in the middle of my last photo. Left side of the car.

Damian Gomez · Posted: Mon Jun 02, 2014 10:38 pm Post subject:

okay that's where I have it, on the left side, didn't get a chance to measure it though
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63' beetle, stock 1200cc, 12v, daily driver but a project


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