Weber 32/36 Smog Legal Vacuum Diagrams

[tjones02]

Since no one could help me in my earlier post... I decided to figure it out myself. Go figure?

http://www.bmw2002faq.com/component/option,com_forum/Itemid,50/page,viewtopic/p,492700/#492700

I figured out that why not just take a picture of each diagram to see how they turn out... well here they are....

Mainly for those who still have to pass smog/emissions tests when using the Redline Weber K 8205 32/36 (Smog) EMISSON LEGAL (CARB) C.A.R.B. Exemption D133-6 Kit. 1976, 76 1975, 75, 1974, 74, 1973, 73, 1972, 72, vacuum, hose, diagram, chart, magnetic valve......

[Mark92131]

The emission diagrams are on this site

http://www.dagsites.com/

Hope this helps...

Mark92131

[tjones02]

The ones on http://www.dagsites.com/ are for the stock 2bbl Solex DTITA equipped late '72 to '76 2002's. NOT for the Weber K-8205 BMW DGAV 33B32/36 kit. (I.E. C.A.R.B California Air Resources Board legal)

I couldn't find them online or in the FAQ so I provided them.

[tjones02]

I like to run the charcoal canister hose to the small vacuum port on the stock air filter housing. Even though the diagram shows to run a ported vac hose to the air cleaner I never have. And for that matter it would be a pretty big vacuum leak!

[Guest Anonymous]

I replied to your earlier post and wondered where you were going. Years ago I acquired two Weber 32/36 DGV5A's that were equipped with silver aluminium "CARB" tags. As I recall, the carbs came in standard Weber boxes with single page virtually illegible instructions. They covered the usual float, idle, and choke setup. I do not remember seeing the diagrams you posted.

At the time, I was in your state and, as you may imagine, the Webers were bought to satisfy Smog testing requirements. One of the Webers was installed on a Audi (as replacement for the Solex). I remember scratching my head trying to figure out how to hook up the distributor vacuum advance/retard when the Weber had different and fewer ports. When I compared the Weber with a non-smog approved version I concluded the only difference was the incoming fuel feed.

In looking at your diagrams, I can't help but notice that it looks like they depict the Solex and not the Weber. Yes, the actual picture is the Weber, but the diagrams? Aside from "not used" and "egr" I don't see anything different about the Weber's installation. Sure, the adjustments are different between different carburetors, but I do not see a whit of difference between the "Weber" diagram and Dang's version.

So let me ask, now that you have the diagram, what are the differences, if any?

Thanks

[tjones02]

Compare these diags for the Webers to the stock Solex ones on http://www.dagsites.com/ and the differences should be apparent.

Yes the carb in the Weber diagrams IS the Solex. They are only modified versions of the original BMW diagrams and NOT new drawings.

If the kit you got was the K-8205 BMW DGAV 32/36 33B kit for 2002's it would have included these diagrams.

[Guest Anonymous]

I have a 74 49 state version with a Weber carb that I was told was "smog legal." My car runs fine with the egr eliminated. (It never functioned since the exhaust manifold was plugged solid with exhaust residue.)

I do not think your diagrams affect my setup, I did compare your 74 pic with the one on dagsite and I do not see a difference. Maybe I am dense. Is there one for the 74 or is it the other years? How could it be much different other than the porting?

TIA

[tjones02]

Here's the STORY....

Someone a long long long time ago decided to develop a California legal Weber 32/36 kit for the 2bbl Solex equipped BMW 2002's. WHY I don't know but they did their homework and got the Weber 32/36 3B DGAV kit legalized meaning (C.A.R.B California Air Resources Board) under Executive Order (E.O.) number D-157 (for the Jam Engineering kit) and # D-133 (for the Redline Weber kit)and these diagrams are supposed to be used to re-arrange various vacuum hoses/lines and to remove "dashpot" and plug off the White Magnetic Valve when installing one of these kits.

Most of you never knew that the Weber 32/36 was legal or illegal. Here in sunny California on "Smog Exempt" vehicles all the original equipment is still supposed to be there and in operational order unless that equipment has C.A.R.B exemption. Now I am NOT the smog police, I am just the teller of truth.

The Legal Weber 32/36 kits are available from almost any of your favorite BMW parts suppliers..... (only a partial list)

Redline Weber: one of the originators of the kit.

http://www.redlineweber.com/html/application_guide/BMW.htm

Jam Engineering: as far as I know, they are THE originators of the kit.

http://www.jameng.com/products/index.phtml?section=2

Top End Performance

http://www.racetep.com/weber/bmwkit.html

Korman Autoworks

http://www.kormanfastbmw.com/2002indu.htm

And many other pedestrian auto parts suppliers...

http://www.statracing.com/pn/webs101043608.asp

http://www.prostreetonline.com/m/bmw_carburetor-kit.asp

[tjones02]

I TRY to provide valid usable information and get only.... confusion and ARGUMENT! ARRRG!![/i]

[ingraham]

... you guys just aren't looking closely enough. It would be easier to understand if you had the Weber installation instructions in front of you.

If you bug me enough, and if you're nice about it, I'll do my best scan of the instructions and post it. Email me.[/i]

[shannahan]

Thanks a bunch for this. I will probably desmog at some point but in the mean time this was a big help. Actually I nearly had it figured out but was missing the egr vacuum on the side of the carb. This carb was from another completely desmogged car that I just swapped in, and I missed that one somehow. It was capped but cap was cracked so it had a terrible leak.

I must be missing something else as well. Your diagram seems to indicate another vacuum provider on the front of the carb. In your diagram it goes to the fuel return et al. I do not see this on my Weber. I have ...

1 - A port in the front of the manifold for the air pump equipment.

2- A port in the back which I run to the white side of the controller valve and vacuum advance

3 - The egr (red) port in the carb

4 A port just below the carb on the manifold. I use this last one for many things including the fuel return.

Also none of the diagrams indicate the vacuum canister does anyone know where this should be hooked in.

[tjones02]

For the fuel return valve T into the red ported vacuum hose that is for the black port of the EGR valve... it/they should be connected to the "#4" port on the passenger side of the carb...

The White magnetic valve should be blocked off with a Weber.... the black valve should be used for the distributor....

Does this car have to pass a smog test????

If not then disconnect the vacuum hoses from the EGR, red valve and control valve. Connect the vacuum advance directly to the T for the fuel return valve carb "red " vacuum port. Disconnect the black valve and vacuum retard and plug that port on the #4 intake runner... leave the retard port on the dizzy open. Do not cap off. Vacuum advance is good, retard is no good.

Next... if you don't have a vacuum pump to check the Air pump diverter valve with... looks like this... http://www.thetoolwarehouse.net/shop/MIT-4000.html ..... then you'll have to suck on the hose to pull some vacuum.... put your tongue on the end of the hose and see if the valve holds vacuum.... another way to check that valve is to pinch the hose while the car is running and feel for a change in idle quality.... if it leaks vacuum or the idle smooths out then that valve is bad and you may as well disconnect the hose to it and cap it off at the intake... AND take off the belt for the air pump... AND cap off the air injection hose that it in front of the head. My favorite way of doing this is to remove the elbow pipe from the front of the exhaust manifold, stick a dime in there and reinstall the elbow pipe. If I could've only had all my customers give me a dime for this I may be a rich man!

Next... Do you have an adjustable timing light?? I use this one... http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_19845_19845

If so... With the vac advance side of the dizzy disconnected and the hose plugged off; set the timing to 34 deg max advance at around 3000 rpm. Then reconnect the vac advance to the dizzy and set the carb from there. I've set the timing as high as 46 deg (advance connected) on one of those dual vac dizzy's with 91 octane... so don't be afraid of a little seat of the pants timing experimentation. Your right foot and the idle quality will tell you when there's enough timing advance. If you can't get the carb to smooth out the idle And or the motor it pinging on full throttle then there's to much timing.

BTW some of the dizzy's have the retard and advance sides mixed up... to test... set the timing as above. THEN rev to any rpm well over idle observe the timing and rpm then connect ported vacuum (carb port) to either side of the dizzy and observe the timing change. If it went up then you've got the right one.

Your right foot and your gas bill will thank me. At different times of course.

HTH.... and well, I hope you can understand all this.

[shannahan]

No Montana does not check cars at all for smog!!!

I hope to get rid of the entire EGR and air pump systems. I just did not know the ramifications of just unplugging the vacuum with all the goodies still in place. I have bypassed the white controller and for a time the vacuume advance controller on the firewall as well, but have that one back in now. I do not have a vacuum retard system (automatic transmission)

The thing is this car idled fine and ran okay with the Solex, (recently started surging and no power under load). but the idle was always spot on. so I figured everything else was good.

Thanks I will look this over. I had just checked the timing not long before the conversion but that is next.

[shannahan]

Oh one more thing. Just so I am clear there is only one vacuum port on the weber the one on the passenger side, correct.

Thanks again.

[tjones02]

Oh one more thing. Just so I am clear there is only one vacuum port on the weber the one on the passenger side, correct.

Thanks again.

YUP.