Setting up a pair of Weber DCOE 45s on a cross ram manifold.

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tweek's Turbos
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Setting up a pair of Weber DCOE 45s on a cross ram manifold.

Postby tweek's Turbos » Mon Feb 03, 2014 4:58 pm

I have been browsing the Saab V4 pages and have a start of a thought, but I may be hitting some of that English US/English UK pot holes.

I want to set up a pair of 45s on a bored out 1700cc engine. I'm not looking for a dyno warrior just a strong running V4.

One of the members suggests using:
36mm chokes. I am figuring this is the 36mm Venturi.
F9 main emulsion tubes.
135 main jets.

I am having trouble figuring out what the Needle valves, Start Valves, Start Air, and anything else I am missing needs to go on.

I have also read that the instructions that came with the twin weber set up for the v4 had clues on how to set up the carbs. Any of you have a copy or a list of these?

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Crazyswede
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Re: Setting up a pair of Weber DCOE 45s on a cross ram manif

Postby Crazyswede » Mon Feb 03, 2014 5:57 pm

tweek's Turbos wrote:I have been browsing the Saab V4 pages and have a start of a thought, but I may be hitting some of that English US/English UK pot holes.

I want to set up a pair of 45s on a bored out 1700cc engine. I'm not looking for a dyno warrior just a strong running V4.

One of the members suggests using:
36mm chokes. I am figuring this is the 36mm Venturi.
F9 main emulsion tubes.
135 main jets.

I am having trouble figuring out what the Needle valves, Start Valves, Start Air, and anything else I am missing needs to go on.

I have also read that the instructions that came with the twin weber set up for the v4 had clues on how to set up the carbs. Any of you have a copy or a list of these?


one of the earlier sport and rally catalogs was more of a how to manual than a catalog. If you can get a copy of that it may give you all of the Saab specs.
I am the 73%

tweek's Turbos
Posts: 132
Joined: Mon Jul 27, 2009 7:27 pm
Number of Saabs currently owned: 3

Re: Setting up a pair of Weber DCOE 45s on a cross ram manif

Postby tweek's Turbos » Mon Feb 03, 2014 7:04 pm

The June 1972 one I have printed from the net says:
"Included in the carburetor kits are modification specifications. For dual caburetor installations it is important that the carburetors are synchronized and the linkage is straight and in order. No play in the linkage is allowed."

Somebody on the fb group linked this,
http://www.misab.se/bestyckn.php?kid=4-140-172

Bilmärke/Model Förgasare Halsring Spridare Huvud-
munstycke E-rör Luft-
munstycke Lågfarts-
munstycke Acc.mun-stycke Pump-ventil Nål-ventil Fl
nivå

V4 1500 28/36 DCD 26
27 4.5 140
155 F30
F30 230
180 50
70 70 50 175 6

V4 1500 36/36 DCD 25
26 4.5 140
145 F30
F30 220
200 50 70 50 175 6

V4 1500 32/36 DGV 26
27 3.5 150
135 F6
F6 160
185 45
50 50 - 200 41

V4 1700 36/36 DCD 26
26 4.5 145
150 F30
F30 220
200 50 70 50 175 6

V4 Rally 40 DFI 32 4.5 220 F2 150 70 65 0 175 .

V4 1700 kam 7,6 Grupp 2 40 DFI 32 4.5 220 F2 160 60 65 0 175 .

V4 1700 kam 7,6 Grupp 2 2x40 DCNF 32 4.5 220 F25 135 50 40 . 200 .

V4 1500 Rally 2 x 45DCOE 36 4.5 140 F9 160 60F8 35 70 200 7

V4 1700 kam 7,6 Grupp 2 2 x 45DCOE 36 4.5 160 F9 145 50F8 40 70 200 7

V4 1700 Rally 2 x 45DCOE 36 4.5 130 F9 145 60F8 40 40 200 7

V4 Rally GR II 2 x 45DCOE 38 5.0 145 F9 230 65F8 50 70 225 7

V4 1850 Rally 2 x 45DCOE 38 5.0 145 F9 210 65F8 50 70 225 7

V4 1850 Rally 2 x 45DCOE 38 4.5 145 F9 190 60F8 50 70 225 7

V4 2,0 Racetrim 2 x 45DCOE 38 4.5 170 F9 160 65F8 50 70 250 7

99, 900 2000 cc std 2 x 45DCOE 34 5.0 130 F9 200 60F11 45 50 175 7

99, 900 2000 cc ngt trim 2 x 45DCOE> 36 5.0 140 F16 210 65F8 65 60 175 7

99, 900 2000 cc GR II 2 x 45DCOE 38 5.0 145 F16 190 65F8 50 50 175 7

99, 900 2000 cc trim 2 x 48DCO 42 5.0 180 F7 160 65F8 45 100 250

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Geoff
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Re: Setting up a pair of Weber DCOE 45s on a cross ram manif

Postby Geoff » Fri Feb 07, 2014 3:47 pm

You have a cross ram manifold for a V4? :-O :thumbsup:
Image
The kind of dirty that doesn't wash off :eyebrows:

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DrewP
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Re: Setting up a pair of Weber DCOE 45s on a cross ram manif

Postby DrewP » Fri Feb 07, 2014 8:43 pm

That must sound absolutely diabolical.
"You can educate ignorance, but you can't fix stupid."

tweek's Turbos
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Re: Setting up a pair of Weber DCOE 45s on a cross ram manif

Postby tweek's Turbos » Wed Apr 30, 2014 10:09 am

Geoff wrote:You have a cross ram manifold for a V4? :-O :thumbsup:



Yep,
Attachments
Manifold Coffee table.JPG

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Geoff
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Re: Setting up a pair of Weber DCOE 45s on a cross ram manif

Postby Geoff » Wed Apr 30, 2014 1:45 pm

:rock on: :mouthdrop: :rock on:
The kind of dirty that doesn't wash off :eyebrows:


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