David Hanchet Posted August 9, 2021 Share Posted August 9, 2021 There is a long vertical crack in the outer body of the carb, which appears to be due to expansion or corrosion in the venturi tube running through the body. The engine runs roughly due to a weak mixture. Does anyone have a spare useable carburetor or know where this can be repaired/rebuilt or if there is a suitable alternative replacement. I am in the UK. Any help greatly appreciated. David Link to comment Share on other sites More sharing options...
carbking Posted August 9, 2021 Share Posted August 9, 2021 The damage you picture is quite common for the Zenith "T" series carburetors. Can it be repaired? Yes, these carbs were used on a number of motorcycles, which seem to be worth their weight in platinum The procedure is to totally disassemble the carb, use a jig, weld the crack in the casting, remachine the casting, and machine a new venturi. Read EXPENSIVE! Having answered that question, on to your second question. I have no record that Chrysler used a Zenith T4X carburetor, but I do not have complete listings for export cars. Domestically, the 1925 model 50 used a Penberthy S-1 pot metal carb. The 1925 model 58 used a Stewart model 30 (brass carb) The 1926 model 58 continued with the Stewart until mid-year, when it was replaced by a Zenith T4XF (not the T4X you have). There are a number of aftermarket carbs which may be used. Don't know what you might find in the U.K. Jon 1 Link to comment Share on other sites More sharing options...
pmhowe Posted August 10, 2021 Share Posted August 10, 2021 I think Carbking has given excellent advice. That should be “Plan A”: Look for a suitable replacement. Plan B might be to find a person capable of 3D printing a new housing. Plan C is a stop gap measure: Take the carburetor apart, and use JB Weld to repair all the cracks. It will be ugly, and might not last for a long time, but it might also get your car back on the road for a time. I’d give it a try, if it were mine. Phil Link to comment Share on other sites More sharing options...
David Hanchet Posted August 10, 2021 Author Share Posted August 10, 2021 Thanks for your advice, I should have mentioned that the car is a right hand drive empire model originally exported to New Zealand and then imported 30 years ago to the UK. The engine will start easily enough and run with the choke out as a temporary measure. Are there any specialist carburetor suppliers in the US worth approaching? otherwise, I favour rebuilding it, if possible, for long term reliability. David Link to comment Share on other sites More sharing options...
hchris Posted August 10, 2021 Share Posted August 10, 2021 Hmmm, if it makes you feel any better I've got a box full of those carbs in the same condition (25 Maxwell in my case) Ultimately I used the best upper body and ground out the pot metal venturi, then had a venturi machined up from aluminum round, noting the position of groove and holes correctly. Given that the venturi profile was mostly guess work it actually worked quite well, now with 3D technology I'm thinking it wouldn't be a huge task to replicate Link to comment Share on other sites More sharing options...
Peter R. Posted August 11, 2021 Share Posted August 11, 2021 Shouldn't the bowl be mounted towards the direction of travel? I'd look into a Carter BB1 as a replacement. If you want to go European you could use a Solex VAFD or FV or an earlier M-Type Solex brass carburetor (the better choice in my opinion). A French Zenith Model U would be an option or a Pallas could be used. They all made replacement carburetors. What's the engine number of your Chrysler? Link to comment Share on other sites More sharing options...
David Hanchet Posted August 12, 2021 Author Share Posted August 12, 2021 The bowl faces outwards and would appear to be in the correct position. The air intake faces rearwards presumably to give it some protection and the choke and throttle cables and fittings all appear to be in the right place and working properly, if a little worn. I have a Carter BB1 but this will take some work to make it fit, and the mounting flange is a lot wider and may need to be fitted in an offset position if space allows. Thanks for advice on other carburetors which i will look into. The engine No is F76204 Link to comment Share on other sites More sharing options...
carbking Posted August 12, 2021 Share Posted August 12, 2021 David - both the Stewart and the Penberthy I mentioned in my first post have the centerline of the carburetor the same as the centerline of the car, rather than perpendicular as yours is installed. Jon. Link to comment Share on other sites More sharing options...
Peter R. Posted August 12, 2021 Share Posted August 12, 2021 (edited) On 8/12/2021 at 12:02 PM, David Hanchet said: I have a Carter BB1 but this will take some work to make it fit, and the mounting flange is a lot wider and may need to be fitted in an offset position if space allows. Carter offered three different BB1 universal carburetors with adjustable main metering screws. I don't know if your BB1 a universal carburetor and if so, which one it is. The BB1 I was referring to is a BB1-245S. It has a 1-1/4" SAE flange but the holes are drilled to adapt it to a 1" flange (center to center distance 2-3/8"). BB1D has the same flange but the centers are drilled 2-11/16" (regular 1-1/4" SAE). BB1-245SD and BB1D are actually the same carburetors but with different center to center distances. I had around 15 BB1 universal carburetors but they're all gone by now because I put them on all kinds of small and mid size cars. A good solution to replace many of those problematic OE carburetors of that time. But if you decide to go for a Carter BB1 I could help you with parts. I have all parts in stock (NOS) and I might even have an extra 245SD housing. Edited August 21, 2021 by Peter R. (see edit history) Link to comment Share on other sites More sharing options...
Peter R. Posted August 12, 2021 Share Posted August 12, 2021 8 hours ago, David Hanchet said: The engine No is F76204 David, According to the engine number your Chrysler is a Model 58. B & S 3-5/8" x 4-1/2" (92 x 114) 186 cui (3 Lt.) As Jon mentioned the car was originally equipped with a Stewart carburetor. I have a bunch of Stewarts in stock. I can gladly look if I have one. Peter Link to comment Share on other sites More sharing options...
carbking Posted August 12, 2021 Share Posted August 12, 2021 Peter - it would be a Stewart Model 30. Jon. 1 Link to comment Share on other sites More sharing options...
Peter R. Posted August 18, 2021 Share Posted August 18, 2021 On 8/13/2021 at 12:22 AM, carbking said: Peter - it would be a Stewart Model 30. Thanks for the info, Jon. I don't have much info on Stewart carburetors (....only what Dyke's tells me) Peter Link to comment Share on other sites More sharing options...
Peter R. Posted August 18, 2021 Share Posted August 18, 2021 David - I went through my Stewart carburetors but unfortunately I can't help you with a Model 30. I have a bunch Stewart Model 25 carburetors for Dodge, Essex and Hudson but no Model 30 for Chrysler. BTW Carter obviously recommended the BB1-245S carburetor as a replacement for Chrysler Model 58. 1 Link to comment Share on other sites More sharing options...
David Hanchet Posted August 20, 2021 Author Share Posted August 20, 2021 Thanks for all the above information, Think I need to start again as I assumed the Zenith T4X was original. The photo below is of a picture showing the carburetor in my Chrysler 4 Instruction Book second edition 1925, Unfortunately, there is no name on the carburetor in the photo and the manual does not state the name or model. Could you please confirm this is a Stewart Model 30. My choice now appears to be to either buy a Stewart Model 30 if one is available, or a Carter Model BB1-245SA. Does anyone have one of the above for sale? I do have an an old Carter Model BB1D could this be used? and is there any material difference between this and the one above? Sorry so many queries David Link to comment Share on other sites More sharing options...
carbking Posted August 20, 2021 Share Posted August 20, 2021 That is indeed a Stewart model 30. The BB1D is too large. Jon. Link to comment Share on other sites More sharing options...
David Hanchet Posted October 15, 2021 Author Share Posted October 15, 2021 On 8/20/2021 at 7:08 PM, carbking said: That is indeed a Stewart model 30. The BB1D is too large. Jon. Link to comment Share on other sites More sharing options...
David Hanchet Posted October 15, 2021 Author Share Posted October 15, 2021 Any idea where I can buy a Stewart model 30 ? David Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now