Carby Options - 1300cc Twin Port Beetle

1,769 posts · joined Oct 2004 · 3 Jun 2007, 10:23 pm

#594863

I'm looking to renew the carby & inlet manifold on my '72 1300 standard beetle, as the heat risers have rusted through (I have heaps of trouble with massive flat spots once the air temp gets cooler) & the carby is now 35yrs old & drawing its fair share of air around the throttle shaft.

Investigations have shown that new standard carby & manifold is going to cost me between $400 & $500 so I thought I might aswell upgrade to twin carbies.

My options as far as I can see are;

1. 40mm Kadrons

2. 34mm ict Webers or Empis

3. adapt a set of Type3 carbies

Can any of these combos be set up to work correctly on a 1300cc engine?
I am leaning towards the Kadrons as they will provide more room to move when I am ready to increase engine size, but I am afraid they will be to big for a standard 1300.
The Webers would maybe not as beneficial on a future larger engine & the type 3 setup will probably be the cheapest but will bring with it the same wornout carby issues that I currently have.
If anyone can give me some advice it would be most appreciated?

Cheers
Brendan

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VWCOOL 23 Windows of Awesome

5,158 posts · joined Jun 2003 · 4 Jun 2007, 6:25 am

#594901

surely someone would have a good SH one...? Big carbs on a 1300 is a waste - but so is $500 for a new carby!

Pay your debts, CxxT

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 · 4 Jun 2007, 6:55 am

#594903

Buy a new manifold best method to fix

I read it on FACEBOOK so it must be true

http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630

http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099

http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603

http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

koolkarmakombi enkarmarising

2,078 posts · joined Jun 2003 · 4 Jun 2007, 8:53 am

#594919

2nd new manifold and recond carb= more money in pocket and nice running car.

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vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 · 5 Jun 2007, 7:20 am

#595129

Is your mainfold a single or dual pre heat tube ??

I read it on FACEBOOK so it must be true

http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630

http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099

http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603

http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

Special Air Service Chief "Gunna"

1,769 posts · joined Oct 2004 · 5 Jun 2007, 9:32 pm

#595292

vw54 wrote:Is your mainfold a single or dual pre heat tube ??

Thanks for the input guys, I should have said that as soon as I have need to crack the engine apart (currently its solid apart from this issue) I will be going to at least 1600cc so that is why i am thinking of getting the bigger carbs now & rejetting etc when I increase capacity.

vw54, my existing manifold is a single preheat tube, but it is for a 31pict 3 carby so its got a smaller opening & bolt spacing is closer together than the more common 34pict 3 manifold.

Cheers
Brendan

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vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 · 6 Jun 2007, 7:12 am

#595334

the mainfolds are availble new if you need one, make sure you get the quality German rubber boots if your replacing them

I read it on FACEBOOK so it must be true

http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630

http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099

http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603

http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 · 7 Jun 2007, 2:38 pm

#595557

Hi

The 1300 twin port also has smaller alloy cast ends as well and the rubber boots are smaller also. Might be better off getting a whole 1600 manifold and carb, seeing as your going 1600 anyway.

Steve

Special Air Service Chief "Gunna"

1,769 posts · joined Oct 2004 · 7 Jun 2007, 4:06 pm

#595569

1303Steve wrote:Hi

The 1300 twin port also has smaller alloy cast ends as well and the rubber boots are smaller also. Might be better off getting a whole 1600 manifold and carb, seeing as your going 1600 anyway.

Steve

Thanks Steve, I didn't know that, I have 1600 end castings in the shed so I'll use them if I go that way.
an anyone confirm nor deny the fact that 1300 twin port heads have smaller valves &/or ports than 1600? I would assums cam would be different also?

Where can I get a carby rebushed & are the throttle bushes the only part that wears out that cant be replaced simply by screwing them off & replacing them or am I missing something?

Cheers
Brendan

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Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 · 10 Jun 2007, 9:17 pm

#596159

Carburettor Service Company on Parramatta Road Burwood in Sydney will do the work
Do a search i have posted there address details several times

Give them a call -good people

That is where they leak - bushings.

Futue te ipsum!!!

Special Air Service Chief "Gunna"

1,769 posts · joined Oct 2004 · 10 Jun 2007, 10:44 pm

#596175

Thanks Barry,
I've since found out that I can get them done here in Taree so I'm going to cet a price here.

Cheers
Brendan

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ctefeh Wolfsburg Wizard

479 posts · joined Apr 2005 · 12 Jun 2007, 12:08 am

#596365

SAS,
I believe the 1300 valves may be smaller. I seem to remember my old Sealed Power Catalog lists different sizes. I'll see if I can dig it up, or get brave and crawl through the underhouse pile to measure up a 1300 head I have.

Ctefeh

ctefeh Wolfsburg Wizard

479 posts · joined Apr 2005 · 13 Jun 2007, 9:33 pm

#596794

SAS,
I measured 35.5 x 32 head diameters on the heads that came off my AB block 1300 TP. Same size as a standard 1600 TP.

Ctefeh

Special Air Service Chief "Gunna"

1,769 posts · joined Oct 2004 · 13 Jun 2007, 10:30 pm

#596819

Thats outstanding Ctefeh, thanks heaps for that.
Cheers
Brendan

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