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Wed Apr 07, 2021 12:56 pm

the mufflers for vw split 1200cc (shape as original) are no longer reproduced ... how do you do, modify those of the beetle by plugging an outlet?
Grazie Giorgio

Wed Apr 07, 2021 3:07 pm

if you search for 40HP as the 34PS are called here in the US you can find a few on here:

https://www.thesamba.com/vw/classifieds/search.php...words=40hp

some in Europe like this set:

https://www.thesamba.com/vw/classifieds/detail.php?id=2446436

Thu Apr 08, 2021 4:32 am

Thanks Mandraks!

mandraks wrote: if you search for 40HP as the 34PS are called here in the US you can find a few on here:

https://www.thesamba.com/vw/classifieds/search.php...words=40hp

some in Europe like this set:

https://www.thesamba.com/vw/classifieds/detail.php?id=2446436

Thu Apr 08, 2021 4:45 pm

1200cc 30 BPH or 34 BPH?? Both are not easily interchangeable. Requires cutting and welding.

Fri Apr 09, 2021 12:39 am

Hi,
muffler for bus 1200cc August 62 with preheaters, engine I think 34 hp

Eric&Barb wrote: 1200cc 30 BPH or 34 BPH?? Both are not easily interchangeable. Requires cutting and welding.

Fri Apr 09, 2021 8:45 am

Giorgio Udine wrote: Hi,
muffler for bus 1200cc August 62 with preheaters, engine I think 34 hp

By "preheaters" guessing it is a fresh air heating system on your 34 BHP (40 HP SAE) engine. If so, not the stock engine which would be stale air heated till mid DEC62. Not that it really matters, just as long as it gets you down the road.

Fri Apr 09, 2021 8:59 am

with August 62 it becomes version 63 therefore with preheaters system, the engine is correct version ...

Quote: By "preheaters" guessing it is a fresh air heating system on your 34 BHP (40 HP SAE) engine. If so, not the stock engine which would be stale air heated till mid DEC62. Not that it really matters, just as long as it gets you down the road.

Fri Apr 09, 2021 9:33 am

Giorgio Udine wrote: with August 62 it becomes version 63 therefore with preheaters system, the engine is correct version ...

Except for VW did not ALWAYS make ALL changes at that point in the year. See entry in the upper right of the image below from the "Progressive Refinements" that was a VW dealer only manual on changes at the factory:

The exception to this was the bus only 1500 optional engine package that came right off in AUG62 with fresh air heating.

Fri Apr 09, 2021 9:41 am

More of the "Progressive Refinements" manual and much much more good to know VW stuff here:

http://www.oacdp.org/

Thu Apr 15, 2021 11:20 am

in europe sometimes they come out cheap as NOS, due to the very low requests for purchasing.
early 40hp (34ps for us) in addition of the muffler exit modification, requires also the adaptation of the lenght and diameter of the rear, #1 and #3 cylinders.
You wil need to fabricate a tube or weld a sleeve to the heat exchangers. Than slightly enlarge the hole in the lower cylinder control box.

Thu Apr 15, 2021 12:58 pm

Eric&Barb wrote: More of the "Progressive Refinements" manual and much much more good to know VW stuff here:

http://www.oacdp.org/

This site is awesome, it answered the question about the difference between the small nut 3/4 ton and small nut 1 ton brake drums and axles I had. 5 silly millimeters.