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1954 & 1955 engines whats not correct!
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62ItalianRagtop
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PostPosted: Mon Jun 25, 2018 5:05 am    Post subject: Re: 1954 & 1955 engines whats not correct! Reply with quote

mabbo wrote:
Hi,

I recently bought a Swedish 55 Oval. This is the engine:
Image may have been reduced in size. Click image to view fullscreen.


The distributor is a Bosch VJU 4 BR 8. The vacuum canister usually looks different to mine. Is it just missing the bolt? What is the screw for?
Image may have been reduced in size. Click image to view fullscreen.


Also, I have a screw missing from the carb, I think its the venturi locating screw, can anyone confirm?
Image may have been reduced in size. Click image to view fullscreen.


Thanks, Neil


Open a topic on your 55 please Very Happy
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Larmo63
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PostPosted: Tue Jun 26, 2018 10:32 am    Post subject: Re: 1954 & 1955 engines whats not correct! Reply with quote

I'd love to find and/or source a correct May '55ish engine and parts.

If anyone has suggestions, let me know. I believe my engine is a '60?

My engine # is 378500 3
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EverettB Premium Member
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PostPosted: Tue Jun 26, 2018 5:49 pm    Post subject: Re: 1954 & 1955 engines whats not correct! Reply with quote

Watch the classifieds or post a wanted ad.
We don't allow ads here in the Forums

Yes, 3785003 is an April, 1960 engine #.
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56samba
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PostPosted: Sun Aug 19, 2018 9:09 am    Post subject: Re: 1954 & 1955 engines whats not correct! Reply with quote

Couldn't find any good pictures of the early 54 domed pistons... so here you go.
Never saw them before in real life.
Also notice the old part number on the pistons and that they were made in late 53. The engine is June 54, very excited to take my early Jan. 54 engine apart and look for the casting dates on these cylinders.


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Chrisisw
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PostPosted: Mon Aug 20, 2018 6:52 am    Post subject: Re: 1954 & 1955 engines whats not correct! Reply with quote

Sweet! Never seen them before either
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sweden
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PostPosted: Mon Aug 20, 2018 10:27 am    Post subject: Re: 1954 & 1955 engines whats not correct! Reply with quote

Nice pictures.
The piston is same from 21 december 1953 to 31 august 1954.
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RockStock
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PostPosted: Wed Mar 27, 2019 5:42 am    Post subject: Uterus Manifold end date Reply with quote

Does anyone have the final VIN of the Uterus Manifold?
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janerick3
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PostPosted: Thu Mar 28, 2019 5:49 am    Post subject: Re: Uterus Manifold end date Reply with quote

RockStock wrote:
Does anyone have the final VIN of the Uterus Manifold?


Progressive Refinements doe not list a changeover date/VIN/engine number.

My Dec '54 engine has the interim, black-painted, thin-wall manifold that preceded the 701E.
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56samba
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PostPosted: Thu Mar 28, 2019 2:25 pm    Post subject: Re: 1954 & 1955 engines whats not correct! Reply with quote

RockStock wrote:
Does anyone have the final VIN of the Uterus Manifold?


Canít find the reference now, but from my remembrance it was April of 1955. I have a late Jan. 55 engine that also came with this manifold.
Guess youíre asking because of your bus? This one should have the uterus manifold.
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splitjunkie
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PostPosted: Thu Mar 28, 2019 6:57 pm    Post subject: Re: 1954 & 1955 engines whats not correct! Reply with quote

Changeover from Uterus to the 701e manifold.

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BulliBill
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PostPosted: Sun Mar 31, 2019 2:50 pm    Post subject: Re: 1954 & 1955 engines whats not correct! Reply with quote

These are what I call "domed" pistons. I re-discovered and quickly cleaned up this set of used 77mm "dome-top" pistons, cylinders and their ring sets. The pistons seen just a few posts earlier I personally would call "dished", not "domed". Am I incorrect in that nickname nomenclature?

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Can anyone clearly and simply describe the advantages/disadvantages of both domed and dished piston tops versus the more common flat-top pistons we're used to seeing in old engines. Perhaps a little background about why each type was needed and when they were used by Volkswagen...

Bill
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56samba
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PostPosted: Mon Apr 01, 2019 5:56 am    Post subject: Re: 1954 & 1955 engines whats not correct! Reply with quote

Bill, are you sure these came from a 36hp engine? I only knew them from later engines with 77 mm bore.

The pistons that I pictured were used in the early months of 1954. They lower the CR a bit and were replaced when they introduced the BR8 dizzy.
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BulliBill
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PostPosted: Mon Apr 01, 2019 8:01 am    Post subject: Re: 1954 & 1955 engines whats not correct! Reply with quote

No, I am not sure what those domed pistons go to. I was just putting the photos out there so someone might reply with info about what they were for, what year and type engine applications they have. I'm certainly no engine expert, but I'm assuming that the domed style reduces the combustion chamber volume and increases the compression ratio a bit? If someone knows for sure, let us all know. When you say "later engines with 77mm bore", which years and horsepower ratings are your thinking they might be for? Thanks for any info anyone!

Bill
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