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Sprint carbs http://forum.triumphdolomite.co.uk/viewtopic.php?t=36421 |
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Author: | GrahamFountain [ Sun Jan 10, 2021 11:57 am ] |
Post subject: | Re: Sprint carbs |
I was also first registered in York, but that's as near as I come to your Sprint. The carbs are SU HS6s from a Sprint from after 1976. The tag on the left carb float chamber top, which seems to be in the right place, should say AUD663L. The set looks to be just missing the throttle linkage and rubber tubes. Graham |
Author: | soe8m [ Mon Jan 11, 2021 5:44 pm ] |
Post subject: | Re: Sprint carbs |
Quote:
I was also first registered in York, but that's as near as I come to your Sprint.
These are the pre 1976 type carb bodies.....The carbs are SU HS6s from a Sprint from after 1976. The tag on the left carb float chamber top, which seems to be in the right place, should say AUD663L. The set looks to be just missing the throttle linkage and rubber tubes. Graham Jeroen |
Author: | GrahamFountain [ Wed Jan 13, 2021 8:37 am ] |
Post subject: | Re: Sprint carbs |
Burlen Fuels have AUD 663 L&R as 1976 onwards. http://sucarb.co.uk/carbspec/carburetto ... s/id/2469/ Maybe the tags are wrong if the bodies are earlier, though I'm not clear on what the visible differences are. Graham |
Author: | GrahamFountain [ Thu Jan 14, 2021 10:18 am ] |
Post subject: | Re: Sprint carbs |
So are you saying that they are not AUD663's or that Burlen Fuels are wrong about the 663s being 76 on? Graham |
Author: | soe8m [ Thu Jan 14, 2021 6:57 pm ] |
Post subject: | Re: Sprint carbs |
Quote:
So are you saying that they are not AUD633's or that Burlen Fuels are wrong about the 633s being 76 on?
Not late ones. Early type body. The rear one isn't even a Triumph Dolomite Sprint one, looks like a Volvo one.Graham Jeroen |
Author: | GrahamFountain [ Mon Jan 18, 2021 9:10 pm ] |
Post subject: | Re: Sprint carbs |
Looking again at FZX 1257 on Burlen Fuels, that shows a carb without Waxstat Jets. Isn't that wrong for the FZX 1257? So maybe the FZX 1257 is the later one with the adjuster recessed into the body, and the pics on that site are not quite right. gRimmers appear to show the FZX series carbs as having a recessed adjuster, though they don't list AUD 663 for the Dolomite Sprint. Though I remain fairly sure the AUD 663s have the setscrew through the flange. But thinking about it, don't some AUD series carbs have a spring on the setscrew above the flange, like Burlen show on the FZX 1257, not a locknut like I've got on my carbs? Didn't look as closely at that picture as I should, did I? Graham |
Author: | GrahamFountain [ Mon Jan 18, 2021 9:28 pm ] |
Post subject: | Re: Sprint carbs |
Sorry, but I noticed I'd made a typo partway through this thread and put AUD 633 instead of AUD 663. Worse still, I then looked back at that errored post instead of the OP, and kept using 633 instead of 663. I've corrected it where I can, hopefully reducing the potential for confusion later. Graham |
Author: | soe8m [ Wed Jan 20, 2021 10:25 am ] |
Post subject: | Re: Sprint carbs |
The choke cable tube/holder and the plastic part both on the rear carb makes it Volvo for me. Jeroen |
Author: | soe8m [ Wed Jan 20, 2021 4:34 pm ] |
Post subject: | Re: Sprint carbs |
Quote:
That the float chamber top is not original I'll grant you. But, by the "choke cable tube/holder" do you mean the one like this on my own Sprint carb set?
Originally the front carb has the tube and the rear not. The choke cable attaches to the front carb. I believe that is with all Triumphs, also the big 6's and the 1850's. Also, what about the point that AUD 663s don't have integral idle adjusters and yet are later, i.e. 1976 and after, carbs? That feature being indicative of the FZX series of SUs. Graham I do not know any date or commission numbers when the carbs changed. The 1850's the change was around 1976, early/late. The sprint maybe a year later but I don't know exact dates. I know the early sprints have the screw through the carb and the later ones I have seen or had, had just like the later 1850's the screw in the carb housing. http://sucarb.co.uk/cf/vehicle/list/?ma ... e=Dolomite I'm not sure how accurate these lists above are. Jeroen |
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