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Sun Nov 27, 2011 2:26 pm

First of all I want to confirm that both heads have the same part number, correct? There is no right or left?

Second, I have two sets of heads. One set has 022101372B and the other set has 022101372G. I know the 'G' heads are correct for the 2.0L non-hydro motor but haven't been able to identify or find any info on the 'B' heads. Anyone know what they are or if there are any differences between the B and G heads?

Sun Nov 27, 2011 9:38 pm

the left and right are different when they came from the factory. The left side (3-4) had the hole for the TS2. If your head has no hole it is the 1-2 side and if it has the hole it is the 3-4 side.

Here is a link you can use to find the other answer. Literally I found it in like 3 seconds. You can too. http://www.google.com/#hl=en&cp=10&gs_id=2...mp;bih=433

Sun Nov 27, 2011 10:03 pm

Thanks, but trust me - Google is the first place I looked. Plenty of info on the "G" series but I couldn't find anything on the "B" series.

All 4 of the heads I have have the temp sensor hole. I guess they're all 3/4 heads then? Is that the only difference? The hole must have been tapped at the factory after the heads were installed (or at least designated for the 3/4 side) otherwise you'd think they'd have different part numbers for left and right. I thought the Germans were pretty obsessive about this sort of thing.

Sun Nov 27, 2011 10:36 pm

I'd check that B number again

021 101 371 1.7
021 101 371 J 1.7
021 101 371 Q 1.7
021 101 371 Q 1.7
021 101 372 1.7
022.101.353 B 1.7 914
022.101.351 A 1.7 914
021 101 371 H 1.8 Bus
021 101 371 S 1.8 Bus
022 101 351 C 1.8 914 US
021 101 351 S 1.8 914 "Euro"
022 101 372 G 2.0 Bus
071 101 372 A 2.0 Bus; different exhaust ports
071 101 372 B 2.0 Bus; different exhaust ports
039 101 351 E 2.0 914 73-74
039 101 351 G 2.0 914 75-76

Mon Nov 28, 2011 8:48 am

Ok I went back and re-checked the B number and uh...turns out it's actually a G... :oops: Perhaps it's time for a break from the rebuild...

Mon Nov 28, 2011 9:49 am

also be aware - and to add to the confusion no doubt - that the numbers cast into the rocker box are are the casting numbers for the head, not the part number. they are a part number but not actually the part number for the cylinder head assembly. the head part numbers are stamped on the head with paint. if you look at this product listing:

http://www.germansupply.com/home/customer/product.php?productid=16537

you can see both sets of numbers. bad photos but you can see the paint stamped numbers. you'll only ever see the paint stamp numbers on old stock parts. the casting number is 071 101 371A but the part numbers on the pair of heads are 071 101 351A/352.

Mon Nov 28, 2011 9:55 am

Ah OK, so that's how they differentiated between left and right. I knew the VW engineers were diligent about that!

Mon Nov 28, 2011 2:21 pm

AB westy nut wrote: Ah OK, so that's how they differentiated between left and right. I knew the VW engineers were diligent about that!

There's a difference?

The last set of heads I picked up are covered in all sorts of stampings in different sizes, plus the original casting marks and a sort of triangular pain stamp. I have no idea what's going on with them. I have to admit the only part I care about is that the seats didn't fall out when I removed the valves. The fact that they both have "ULP" stamped on them and they have a matching number stamped somewhere which seems to mean they were made as a matching set is kind of neat. What looks like detonation damage and possibly bent valves isn't so hot though. No matter what they are still head and shoulders above the rest.

Oh I see the L/R difference. I've never seen a head with a TS2 hole so I guess there is no difference to me.

Mon Nov 28, 2011 2:42 pm

RatCamper wrote: There's a difference?

The last set of heads I picked up are covered in all sorts of stampings in different sizes, plus the original casting marks and a sort of triangular pain stamp. I have no idea what's going on with them. I have to admit the only part I care about is that the seats didn't fall out when I removed the valves. The fact that they both have "ULP" stamped on them and they have a matching number stamped somewhere which seems to mean they were made as a matching set is kind of neat. What looks like detonation damage and possibly bent valves isn't so hot though. No matter what they are still head and shoulders above the rest.

Oh I see the L/R difference. I've never seen a head with a TS2 hole so I guess there is no difference to me.

I've got one of those on my forehead now from all this part number talk...

Sat Mar 17, 2012 12:00 pm

Anyone know what an 022 101 371 H is for?

Sat Mar 17, 2012 6:55 pm

Those are Rare cylinder heads since they were built for the
1974 412 and also some type'2s

1974 412 had F.I. 1974 bus was carbed

Should have 39mm int.& 33mm exh.

can you post a pic of the combustion chamber?

i have a couple of them.

Tue Mar 20, 2012 6:08 pm

Tue Mar 20, 2012 6:26 pm

Yes, those are the same as the 3 i have except in the spark plug area.

Your's have been worked on as i'm sure you can tell.

I have one type2 head [NO head temp sensor]
And two With head temp sensors type4

They are 1.8 heads Not 2.0

Wed Mar 21, 2012 10:35 am

They look as if they have been flycut. What should the head bore be for 1.8 cyl?

Wed Mar 21, 2012 5:02 pm

Yes, those heads were Flycut and,I hope they were just cleaned
up for sealing by someone who new what they were doing.
Usually when this is done an equal amount SHOULD be removed
from the head surface also.

But i have seen this done when they had the old sealing rings
in the head and pounded a little ridge in them.

Measure the depth on all 4 to check the accuracy of the cut.

1.8 cylinder registers are 100mm
2.0 are 105mm