11 replies to this topic

[Cook]

Hi,

 

I'm trying to plumb the carby in the WB and want to clarify a few ports as the more I read the more variations I seem to come across on various sites.

 

Firstly it is a 253 engine out of my Torana, running a manual gearbox, so I may be comparing apples and oranges to a degree.  Car is to be a daily driver so I am not looking to block-off ports to gain HP or protect the motor (to a certain degree). Here is a pic off another site

 

 

1. is for auto car

Hose to right of #1 is to PCV at rear of rocker cover

2. is to canister (I presume it goes to purge port on canister?)

3. Vacuum advance, which would go to distributor.  Now, I currently have a Vacuum Delay Valve on the manifold from the Torana set-up which I understand would normally run top the distributor so which way do I go here (or am I completely wrong).

In addition to 2 & 3 I have a third port to the right possibly where the hole is in this photo.  Any suggestions

4. choke kick off which is connected

5. Best I can find is a guess that it is clean air feed for auto choke thermostat.  So is it required and if so where does it plumb to?

 

In addition, at the front of the carby is a large port and I have not been able to identify what it is for or where it should be plumbed to. 

 

 

Hopefully you can give me some clarity.  Cheers Ron

 

 

 

Attached Files

•  carb lines.jpg   303.54K   9 downloads
•  Front of Stromberg Carby.jpg   48.12K   6 downloads

[EunUCh]

Dunno too much about the original plumbing ,

# 1 goes to full vac. so it may have had something to do with thermal switches ?

 

# 3 yes to vac. advance on dizzy.

#2 yes to can. (PURGE) i think they call it ?

 

The big one on the front i think , (lower picture ) goes to CARB on canister ? , it was supposed to be anther bowl vent along with the internal vent helped by the spring loaded washer on the accel. pump that kept all the fumes under control , fuel fumes would never find their way out of a spring loaded half sealing at best washer with a plunger through the middle of it ?

 

and just for shits and giggles , try and get a bit of resin , (bakelite) and make up a " heat riser' to put between the carb. and manifold to keep things a little cool ?

anyone got a book on how it was done from fact. ?

 

 

[UCSLE]

large one on the front is a vent to the canister

 

looked up the LX parts catalog and it has a different variation on some

 

 1v.JPG   125.47K   4 downloads

 

 v2.JPG   95.72K   3 downloads

 

[Cook]

Thanks guys.

 

The canister for the WB only has 2 ports, one for purge (which I believe is for carby port #2 and the other for tank.  I do have another 3 port canister but the base is different in the WB.  It has 2 tabs on bottom that allow it to be screwed down to the inner guard, not a frame like the Toranas. 

 

I have had a look at the parts manual for both WB and Torana and yes there are variations, that's why it may be a case of round peg in a square hole.

 

Believe it or not I did find a new insulator for the carb from a guy in Clayton.  It was from a Valiant rebuild kit he didn't use but fits fine.  He said he comes across them now and then but extremely hard to find.

 

So I am still unsure about:

 

Port to right of #3

What to do with Vacuum Delay Valve if I plumb #3 to distributor

#5 port

Front port

 

Cheers Ron

[EunUCh]

You are right , #5 is fresh air intake to choke thermostat , they used to have a steel tube in the drivers side exhaust manifold , one end

had a flare nut that connected the steel line to the choke thermostat on the carb. and the other end of the steel line found its way up

to #5 , but , just going on the HQ red book it is sort of hard to tell how far the steel line went , i would hazard a guess and say that it went

pretty well all the way up and then was connected by a piece of short rubber tube to #5 ?

 

The one to the right of #3 is marked egr on the side of the carb. where that port comes out/or in , the plot thickens , it leads down to

the carb. base and is restricted and ends up in a cavity that for all intents and purposes looks like when a gasket is fitted that the cavity

gets sealed and would appear that it goes nowhere and does nothing ?...you can see the drill bit in the restricted hole into the cavity.

 EGRPORT.JPG   354.73K   1 downloads

 

Not sure what the go is with vac. delay set up.

The front port , (the big one on bowl i am guessing) , maybe it was bunged up if there are only two ports on the canister , PURGE & TANK , those carbs. still have the internal bowl vent so it may just be that they didn't use it ?

interesting stuff .

 

[Dr Terry]

Be a bit careful here guys. The carby & inlet manifold shown in the photo are late LX, in other words WITH ADR27A anti-pollution gear. The sections of the parts catalogue shown are for the early LX (& LH), WITHOUT ADR27A. Most of that pictured will be quite incorrect.

 

Try to get a copy of the later parts catalogue (even HX or HZ will do) & that will show you the correct plumbing. Even the auto choke pipes are very different between the two.

 

Likewise the canister:- pre-ADR27A they had 4 fittings, with ADR27A they had 3 & for WB they went to 2, so you will need the canister with 3 fittings for your fuel vapour venting to work correctly.

 

Also I'm not sure what you mean by "vacuum delay set-up", can you post a picture of it.

 

Dr Terry

[Cook]

Thanks Dr Terry.

 

I haven't looked into it in depth but haven't seen a 3 port canister that has the tags at the bottom to enable it to be screwed to the inner guard.  Any suggestions on which may suit?

 

Cheers Ron

 

Attached Files

•  Pic with Vacuum Delay Valve.jpg   78.79K   3 downloads

[Cook]

Sorry Dr Terry I deleted half of my post.

 

I am conscious of getting the emissions gear right and as I've said, I think part of my problem is figuring out the differences between what I have out of the Torana and fitting it to suit the WB requirements.

 

The above pic is from an earlier post.  The vac delay runs from the TVS to a solenoid (if I am reading right) then to the green/white valve, then to something else.  Mine stops at the valve.

 

I've just noticed in that photo a hardline from the from port of that carby going to somewhere?

 

Cheers Ron

[Dr Terry]

Now you've got me confused.

 

The top pic is of a WW Stromberg from an ADR27A red 253.

 

The last pic is of a Rochester QJet from an ADR27A red 308.

 

Exactly what do you have ?

 

Once I've got that I will explain the vac advance plumbing.

 

Also I don't believe that there is a canister that with tags, I think you just need to use the earlier bracket.

 

Dr Terry

[Cook]

Dr Terry, if you're confused how do you think I feel.  LOL.

 

I have a Stromberg and the only reason I attached that photo was it is the only one I have seen with the same vac delay valve (or that's what it was referred to as) that I have.  Here is a photo of the valve on my manifold.  I can get some more photos if that helps. 

 

I do have a WB parts manual but it is a bit sparse on emissions (or I am not understanding it properly).

 

I was wondering if I run a hose form the front port to a "T" piece and then pick up the other hose from the #2 port at rear of the carby and run them both to the purge port on the canister.  If that would achieve the same result.  I'm not keen on having to find and weld up a canister bracket if I can help it.

 

Cheers Ron

Attached Files

•  Vac Delay Valve.jpg   161.86K   4 downloads

[EunUCh]

In the lower picture in post #1 it looks like there is a plate with 2 holes in it , if the manifold pictured is WB? then there should be 2 steel 

tubes in the holes in that plate , one has a flare nut that goes to choke thermostat (the front hole) , the rear pipe does a sort of weird bend and then is connected by a rubber pipe to #5 ?

[Cook]

Thanks EunUCh that's correct.  Only problem is that my carby has a manual choke so I presume that I will blank these off.  I will post some more pics when I get a chance but having done some more research found an old post with further explanation.  #5 is fresh air feed pipe for the auto choke, as you say.

 

So I think this is how it goes:

 

Port #1 - blank off as this is for auto trans

Port to right of #1 to PCV valve at rear of rocker cover

Port # 2 - to charcoal canister Purge port

Port #3 to vac advance on distributor

Port to right of #3 possibly blank off unless further information forthcoming

Port #4 to choke kick-off

Port #5 blank off as is for fresh air feed for auto choke

 

 

Therefore only 2 uncertainties are:

Port at front of carb - consider running to a T piece and pick up line from Port #2

Vac delay valve?

 

Cheers Ron