Bob Angell Posted November 26, 2017 Report Share Posted November 26, 2017 Can I replace a Solex Carburettor on my 1200 Herald with a single SU or Stromberg carb and what do I need in parts? I realise that the Solex is a down draught so is there a modification part to convert for the side draught SU or Stromberg or do I require a new manifold? Many thanks. Bob Angell Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 26, 2017 Report Share Posted November 26, 2017 a thought . you may find a twin su set up ex 1200 spitfire is an easier available swap , the 13/60 has different porting so i dont think thats a straight fit there have been adaptors around in the past ,not sure about availability and due to design not good for flow . Pete Link to comment Share on other sites More sharing options...
Bob Angell Posted November 26, 2017 Author Report Share Posted November 26, 2017 Thank you Pete. I am not looking for increased performance but just to make it run smoother. The Solex carb had been butchered by previous owner(s) who had badly warped the flange by overtightening the flange bolts causing a 2mm curve. I refaced it but there is loss of power at revs and I think the carb is past its sell by date, although I have put in new jets etc. Regards, Bob Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 26, 2017 Report Share Posted November 26, 2017 ive searched around for a 1147 side draft manifold and not come across anything . twin wont boost a lot of power and good used is in the end available around the traders pete Link to comment Share on other sites More sharing options...
Colin Lindsay Posted November 29, 2017 Report Share Posted November 29, 2017 I used the 1200 Solex to Stromberg adaptor for almost a year, running a Stromberg on a 6J needle with no problems. I only stopped as I'd dismantled the car... Twin carb manifolds come up all the time, the Alexander version is nice for the twin 1.25 Strombergs but some of them require a bit more tweaking of other components to get the best out of them. Link to comment Share on other sites More sharing options...
Bob Angell Posted November 29, 2017 Author Report Share Posted November 29, 2017 Thank you for your reply Colin. I am hoping to use a single carburettor as opposed to twin. As I have problems with the existing Solex I thought it an ideal opportunity to 'upgrade' to a better carb. My Solex had been over tightened on the flange causing a 2mm gap between the flange and manifold. I refaced it but it still let's air in. The adjustment needle is also poor. My other choice is an SU. Many thanks. Bob Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 29, 2017 Report Share Posted November 29, 2017 why not give places like the carburettor exchange a call for a re build quote small company , no frills, generally well price being local ive used them for many years http://www.carbex.demon.co.uk/page2.html Pete Link to comment Share on other sites More sharing options...
Colin Lindsay Posted November 29, 2017 Report Share Posted November 29, 2017 If you do get a price for a Solex refurb, let me know!! I'm just about to rebuild one and am wondering if the cost of the spare parts, plus my time and effort, is really worth the saving.... Link to comment Share on other sites More sharing options...
Guest Posted November 29, 2017 Report Share Posted November 29, 2017 Bob. If the Solex is a down draft, perhaps you might be better looking for a Weber carb which in most cases has an identical footprint to the inlet manifold. Something along the lines of a 28/36. Regards. Richard. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted November 29, 2017 Report Share Posted November 29, 2017 Webers can be expensive and hard to find, plus the manifold can be even harder to locate for any kind of reasonable money. I got a Weber carb (allegedly for a Herald) a few years back on eBay and amazingly enough a manifold came up a few weeks later. I'm still debating whether or not they'll be wasted on my 1200. I also managed to find an uncut blank for a Solex manifold which appears to mount the Weber carb in the same position as the Solex on the original cast-iron manifold. I was also intending to experiment with a SU carb from a Morris Minor which has a horizontal float chamber but a tilted body to suit the Solex mount / adaptor. Link to comment Share on other sites More sharing options...
Guest Posted November 29, 2017 Report Share Posted November 29, 2017 Colin. My experience of Weber carbs has always been positive and they are certainly light years ahead of their Solex counterpart. Spares are more plentiful and the tuning range is excellent; in addition a twin choke is far more manageable to tune than a pair of carbs - especially as you automatically eliminate the connecting apparatus normally associated with twin carbs. Out of interest what model is the Weber you have ?? Regards. Richard. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted December 2, 2017 Report Share Posted December 2, 2017 Sorry for the delay, had to go dig it out.... Its a type 36DCOE. I meant that original period Webers are hard to find and quite sought after, new ones are a different matter. I'll experiment with this one once I have an actual Herald up and running, which will be on the original Solex as a base point to start with. Link to comment Share on other sites More sharing options...
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