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Question on the 73 xu1 cd stromberg carby

Started by _sunburst73-xu1_ , Oct 11 2009 06:51 AM

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147 replies to this topic

#51 S pack

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Posted 06 September 2010 - 11:28 PM

Yeah Daneo that's correct.
Fuel overflowing out the fuel bowl vent hole can be caused by incorrectly adjusted float levels but most commonly caused by a faulty needle & seat or crap getting caught between the needle & seat.

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#52 _sunburst73-xu1_

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Posted 11 May 2011 - 07:28 PM

The initial 500 2/73, 3/73, 4/73 % 5/73 XU-1,s ran the 226 TCX carbies

While the 288 6/73, 7/73, 8/73 & 9/73 Bathurst Homologation Specials ran the T226 TCX carbies

Note the differences in the housings....................

Sorry all to bring this thread up again.
This May sound a trivial thing but looking at the pic of the early 73 carb to the late 73 carb and if you have alook at the different of the bottoms of the fuel bowls,the early fuel bowl is more rounded then the later model.Dose anyone know if this was a change in the models or something???

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#53 _sunburst73-xu1_

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Posted 11 May 2011 - 07:31 PM

And this is what I mean

101_1512.jpg 66.85K 4 downloads

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#54 _Ozzie Picker_

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Posted 11 May 2011 - 07:46 PM

what i noticed was the left side of slide,at about 10 o,clock there is 2 holes one larger than other,where the other carb has one blank hole. i,d say this is the earlier as it doesn,t have the external hole thingies.

Edited by 73BATHXU1HTBATH350, 11 May 2011 - 07:48 PM.

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#55 S pack

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Posted 11 May 2011 - 07:48 PM

Hi Dane

A production change in the fuel bowls Zenith supplied with the carbs.
It looks to me like the extra meat in that area of the fuel bowl casting may have been to overcome distortion and leakage but that is only pure conjecture.

Cheers
Dave.

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#56 S pack

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Posted 11 May 2011 - 07:55 PM

what i noticed was the left side of slide,at about 10 o,clock there is 2 holes one larger than other,where the other carb has one blank hole. i,d say this is the earlier as it doesn,t have the external hole thingies.

Hi Craig

The difference is the later carby body has the two holes to suit with the thermal choke control (auto choke). XU1's didn't have this feature but O/S cars fitted with these carbs did as part of their emissions control measures.

Cheers
Dave

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#57 _Ozzie Picker_

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Posted 11 May 2011 - 07:58 PM

what i noticed was the left side of slide,at about 10 o,clock there is 2 holes one larger than other,where the other carb has one blank hole. i,d say this is the earlier as it doesn,t have the external hole thingies.

Hi Craig

The difference is the later carby body has the two holes to suit with the thermal choke control (auto choke). XU1's didn't have this feature but O/S cars fitted with these carbs did as part of their emissions control measures.

Cheers
Dave

thanks dave,

so would the overseas cars have different numbers stamped on them?

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#58 _sunburst73-xu1_

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Posted 11 May 2011 - 07:59 PM

Yeah I agree,that was my conclusion,waether its right or wrong.I do have a few different pic of the T226's and they seem to all have that later bowl.
Craig and that is the easyest way to tell on the car if there the later T226's
See pic
The 2 front carbies are the T226's and the back on is a early carbies,see where I have circled.

73 carb.jpg 114.41K 10 downloads

Edited by sunburst73-xu1, 11 May 2011 - 08:01 PM.

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#59 rodomo

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Posted 11 May 2011 - 08:00 PM

Looks the same as these, you'll note the centre carb in the top half of the pic has the extra casting web? :dontknow:

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#60 _Ozzie Picker_

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Posted 11 May 2011 - 08:01 PM

i can see the last one is the wrong one,maybe they were getting rid of the last of the stock on that car. in sunburst 73 pic

Edited by 73BATHXU1HTBATH350, 11 May 2011 - 08:03 PM.

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#61 _sunburst73-xu1_

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Posted 11 May 2011 - 08:10 PM

Funny you should say that Craig,I remember talking with a Bloke over the phone in Melbourne that exact thing and even said that some of the 150 Bathurst cars were like that too.
Rodomo
I don't know either,maybe its been changed over the years. :dontknow:

Edited by sunburst73-xu1, 11 May 2011 - 08:12 PM.

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#62 S pack

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Posted 11 May 2011 - 09:18 PM

what i noticed was the left side of slide,at about 10 o,clock there is 2 holes one larger than other,where the other carb has one blank hole. i,d say this is the earlier as it doesn,t have the external hole thingies.

Hi Craig

The difference is the later carby body has the two holes to suit with the thermal choke control (auto choke). XU1's didn't have this feature but O/S cars fitted with these carbs did as part of their emissions control measures.

Cheers
Dave

thanks dave,

so would the overseas cars have different numbers stamped on them?

Most likely (lots more research to be done) the numbers would be different as they would be a Zenith production code for the configuration/specification for the carby body to suit different engine manufacturers specifications.

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#63 _Mike73_

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Posted 07 June 2011 - 12:47 PM

with dane...true

Some 5th month date cast 226 TCX carbies seen recently, ( that would make that false )
Bruce might like to comment on these, he saw them.

Mike

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#64 lx308

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Posted 05 July 2011 - 03:44 PM

Hi there. Any thoughts on these carbies? Could they be correct for a Feb 73 XU1?
1 carbie has 226A & TC, the other 2 have 226 & TC.
Any info would be great.
Posted Image

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#65 _sunburst73-xu1_

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Posted 05 July 2011 - 04:11 PM

I think from memory the TC 226's were late 72 carbs.The early 73's got the 226 TCX and the later 73s got the T226 TCX.Have alook threw this whole thread I think its mensioned in it somewhere.
cheers Dane

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#66 lx308

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Posted 05 July 2011 - 04:18 PM

Yeah, I've found the date code & they are all 5/72. Five dots with the 2 in the centre. So it's posible they were fitted to a early 73 car..
Cheers.

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#67 lx308

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Posted 05 July 2011 - 05:40 PM

Have I read this date code correctly? 5/72?

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#68 _sunburst73-xu1_

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Posted 05 July 2011 - 07:14 PM

This old thread may help you aswell.
cheers Dane
http://www.gmh-toran...j-xu-1-carbies/

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#69 liswar2

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Posted 09 July 2012 - 12:06 PM

Cyan carbys 001.JPG 126.28K 8 downloads

Cyan carbys 002.JPG 122.14K 2 downloads

Cyan carbys 003.JPG 126.28K 5 downloads

Cyan carbys 003.JPG 126.28K 5 downloadsHi , here a a few photos of my Carbys going back on to my 4/73 Cyan xu-1
they are 2 x 226B TCX and 1 x TC 226
i thought they were a matched set , but after reading this link???
thanks liswar

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#70 liswar2

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Posted 09 July 2012 - 12:09 PM

226B TCX

will have to grab the 3 brass tags from the shed ...

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#71 _sunburst73-xu1_

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Posted 10 July 2012 - 07:51 PM

Cyan carbys 001.JPG 126.28K 8 downloads Cyan carbys 002.JPG 122.14K 2 downloads Cyan carbys 003.JPG 126.28K 5 downloads Cyan carbys 003.JPG 126.28K 5 downloadsHi , here a a few photos of my Carbys going back on to my 4/73 Cyan xu-1
they are 2 x 226B TCX and 1 x TC 226
i thought they were a matched set , but after reading this link???
thanks liswar

They could well be a set that originally were put together the way they are.I know of some later 73 xu1's also Bathurst cars that had at least one early 73 TCX fitted from new.
Anything could have happen back in the day.
I'd just put them on your car,at the end of the day no one can tell them particular carbys apart anyway.
cheers

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#72 Kockum

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Posted 29 August 2013 - 04:50 PM

Resonantly purchased some 73 xu1 carbies,the numbers on the face of the body where the air filter backing plate go's are no1 T226A,no2 T226A and no3 T226B.They also have TCX on them aswell but whats the A and B stand for?Been talking with a forum member and has seen over the years that a every matching set has T226A,T226B and T226A.
Holden must of put the T226B carby on there for a reason.Would be very interested in hearing from any fourm members that have the 73 xu1 to see if they have the same.
cheers Dane

yeh, mine are the same, and thay are original.

cheers gong

there where 2 batches of the 1973 carbys the a batch and then the b batch, it is like everything with holden what thay grabed from the shelf is what you where given,,,
dane my first carby was t2268 then the other 2 where t226a, thay cast all 73 carbys in janury and thay had alot of cars to supply for,, i am not sure about the fact that brizzy cars had 2 bs and adlaide had 2 as,,, i would think it is another thing we need to sort.

cheers gong

I read recently in another thread where the top brass carby tag number for T226 TCX carbs was given as 3133. This number is only part of the story.

Holden did not fit three T226A TCX carbs nor three T226B TCX carbs.

A mixture of A and B carbs were fitted and the top brass tag numbers should reflect this.

As Bruce, John Gong and Dane have all found, one T226B carb and two T226A carbs in original matched sets.

First carb should be - T226B.

Top tag number - 3133.

This carb has the brass vacuum advance fittings.

Carbs two and three are - T226A.

Top tag numbers - 3134.

These two carbs have the brass vacuum advance passage plugs.

There is/was a forum member selling sets of three repro XU1 T226 TCX brass tags with 3133 as the only top tag number. I am not having a go at him because these tags were obtained from a supply house in Victoria - Monaro Muscle Parts.

The following photos are of my factory fitted carbs and brass tags.

No repro tags here.

You will notice in the last photo they did a very poor TCX stamping - two thirds of the ' T ' is visible, a micky hair of the ' C ' is all and the ' X ' is lost in space.

I do not accept that 3133 is the only top brass tag number, nor that it is a date code.

Using the figure of 288 cars, and by the way no one will ever know how many cars were actually fitted with T226 TCX carbs, if 3133 was the only date code, then that means they did the whole Australian shipment of 864 carbs plus spare matched sets from your Holden Dealer in one day!

That is very hard to swallow.