03-01-2019, 02:44 AM
Jon,
As far as I'm aware the eyebolt jets were invariably fitted to much earlier bronze bodied / bronze float chamber SU's - the type of choke lever linkage requirement needed at (1) is obviously different. All the alloy bodied OM's I've come across have taken the (A) Standard Jet at 0.090" - having said that, Burlen do supply new H Type eyebolt jets at 0.090". I doubt if there's any real difference between the 0.090" jets themselves, it all depends on whether your OM has the correct style of choke lever to accept an eyebolt jet or has the choke lever for an (A) standard jet. I've some photos on file somewhere of early bronze bodied SU carbs with eyebolt jets - I'll try and find them.
Here's a photo I've just found on the net which shows the design of the choke lever attachment to the eyebolt jet - note that this arrangement doesn't have provision for a return spring between the choke lever and carb body - presumably the choke linkage would have been by rod rather than by wire.
Screen Shot 2019-01-03 at 01.08.42.png (Size: 155.82 KB / Downloads: 544)
As far as I'm aware the eyebolt jets were invariably fitted to much earlier bronze bodied / bronze float chamber SU's - the type of choke lever linkage requirement needed at (1) is obviously different. All the alloy bodied OM's I've come across have taken the (A) Standard Jet at 0.090" - having said that, Burlen do supply new H Type eyebolt jets at 0.090". I doubt if there's any real difference between the 0.090" jets themselves, it all depends on whether your OM has the correct style of choke lever to accept an eyebolt jet or has the choke lever for an (A) standard jet. I've some photos on file somewhere of early bronze bodied SU carbs with eyebolt jets - I'll try and find them.
Here's a photo I've just found on the net which shows the design of the choke lever attachment to the eyebolt jet - note that this arrangement doesn't have provision for a return spring between the choke lever and carb body - presumably the choke linkage would have been by rod rather than by wire.
Screen Shot 2019-01-03 at 01.08.42.png (Size: 155.82 KB / Downloads: 544)