Zwitter Intake Manifold / Intake Manifolds

[Mr. Okrasa]

Someone is looking for one and I came up with these different types. Not sure which one is correct:

http://ImageEvent.com/mrokrasa/zwitterintakemanifolds
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1959 VW Karmann Ghia Coupe / Bamboo-Green / Denzel 1300cc / OG. owner, paint

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[bwaz]

i'll ignore the "pervert" comment...

I think that both the 802 and 701 would be correct. The 802 originally, the 701 later as a replacement. (not the "E" version)

http://www.thesamba.com/vw/forum/viewtopic.php?t=294002&highlight=zwitter+manifold

[splitjunkie]

the 802 is the only manifold that was used during actual production so that is the only correct one if you are going for factory orignial. The 701 was a later 25hp replacement (glad to see my thesis about the 701 is taking hold ).

The 802 was the replacement manifold for the older jacketed and non jacketed K manifold up until at least the middle of '55 so the 701 had to have come some time after that.

The 701's will have an E but it has been ground off.

the 701E is a garden variety 36hp manifold
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Chris

You know, a lot of these scratches will buff right out... Jerry Seinfeld

[Mr. Okrasa]

[nlorntson]

[Mr. Okrasa]

[Mr. Okrasa]

[bwaz]

8 02 was on my zwitter... and not on 1955 delivered cars....

and I've found John Henry's listing to be dead on...

http://www.zarwerks.com/intake_matrix.htm

[johnshenry]

1.125" OD on the end casting for 25hp, and 1.250" OD for 36hp.
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John Henry

'57 Deluxe
'56 Single Cab

[johnshenry]

[usariemen]

Always a lot of confusion about these.
And you did not even talk about these exotic birds.

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Master of my domain!

[johnshenry]

[nlorntson]

[johnshenry]

They are hard to find in usable condition, they rot on the inside. The guy I got mine from originally wanted like $800+ for it, but then discovered that it had a pinhole leak inside and would leak between the intake runner and the heat riser. So it is unusable... but perfect on the outside and perfect for a "museum" (don't forget to stop at the gift shop on your way out, gaskets are half off in March!!!). I made him a lowball offer and he took it.

I think I saw documentation some time ago that pointed to '54-'55-ish, so not 25hp.
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John Henry

'57 Deluxe
'56 Single Cab

[splitjunkie]

These are '54 - early? '55 36hp manifolds. They were so bad they they must have had to recall them because you hardly every see them. As John said, they rust from the inside of the heat chamber. You can see them in the '54 and '55 bug and bus owners manual

These are the optional cold weather climate 25hp manifolds.

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Chris

You know, a lot of these scratches will buff right out... Jerry Seinfeld

[splitjunkie]

Let me clarify.

The jacketed K was replaced by the 08.02 (P/N 129 501c) with the introduction of the Zwitter and continued until the end of the 25hp engine in '53.


The 08.02 (P/N 129 501c) is the only correct factory manifold for the Zwitter and '53.

This manifold was the only supplied replacement 25hp manifold until at least 9/55. See these technical bulletins:


Technical Bulletin K1 - Carburetor SOLEX 28 PCI - Optional Fitting. All show and list the Zwitter manifold as the manifold to replace the earlier manifolds. If the 701 had already existed they would have used those because their heat risers didn't rot out.

http://www.thesamba.com/vw/archives/manuals/techbulletins/k1.php

The first one listed was dated 1/53 and the last one listed was 3/55. We don't know if this is the last bulletin, It's just the last one we have access to.





Technical Bulletin M1 - VW Engines This lists the various manifolds and carburetors. the 9/1955 and 9/1957 ones have a lot of valuable info.

http://www.thesamba.com/vw/archives/manuals/techbulletins/m1.php

The 9/55 lists: "Only intake manifold 129 501c delivered as replacement part" for the 25hp engine. So the Zwitter manifold was available as the only replacement manifold at least as late as 9/55 for the 25hp engine.

The 9/57 copy lists: "Induction Manifold spare part No. 111 129 701" as the 25hp manifold spare part. This is the 701 manifold you have. So, the 08.02 (P/N 129 501c) manifold was replaced by the 701 sometime between 9/55 and 9/57 based on the above documents.




The 701 manifold was exactly the same as the current 701E 36hp manifold at the time. The only difference is they fitted them with the smaller 25hp end castings and ground off the E on the jacket casting.

I hope this makes it clearer.
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Chris

You know, a lot of these scratches will buff right out... Jerry Seinfeld

[johnshenry]

Good stuff Chris, thanks for taking the time to put all that together.
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John Henry

'57 Deluxe
'56 Single Cab

[hazetguy]

[splitjunkie]

I think we need to come up with an official name for the '54 manifold.

To me the center section looks like a pear or a uterus. Perhaps the "lady parts manifold"?
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Chris

You know, a lot of these scratches will buff right out... Jerry Seinfeld

[johnshenry]