Quote:
Recently stumbled on
this excellent blog post where a SU HS6 rebuild is shown in detail, including drilling and honing the bodies in preparation of rebushing.
The writer -who does this for a living- rebushes them with Delrin, a Dupont made plastic, and states that in 20 years he never got complaints about wear. It also reduces the risk of splitting the body should a metal insert be just too large. There's also a reply of someone using Acetal, fwiw.
With that number of carburetters (or is it carburettors?) to do, it might be worth investing in some tools.
Thanks for the kind words. A few comments:
1. I don't do this for a living; if I did I'd starve. I'm retired, living on my pension. Since I don't need income, I freely share my "secrets", and my blog posts are intended to teach people how to do a job themselves.
2. In my opinion o-rings are not a good idea. You need to replace the shafts and the bushings themselves to provide secure centering of the shaft so that the throttle plate will close reliably and at a consistent idle speed. O-rings would be quite difficult to install, don't generally perform well in unlubricated, rotating, service, and frankly, would not provide any benefits that are not to be more easily obtained with a good-fitting, long-lasting Delrin bushing.
3. It sounds as if the people in this forum are very capable, and some of you should be able to do this type of work. But it does require considerable setup expense, so if you have only a few to do, it's more cost effective to hire it done. Burlen's price of 60 British pounds per carburetor is reasonable. I'm currently charging $125.00 US per pair, or roughly 45 British pounds per carburetor, but because of the expense of trans-Atlantic shipment, it's probably not cost effective to send them to me.
4. Although Burlen's price is reasonable, they're simply not using the best and longest-lasting material for the job. Delrin is that best material.
5. I would be happy to assist any of you in getting set up to do this job yourself; to that end you may contact me with any questions you may have. My contact information is shown on my "About" page:
https://thosbryant.wordpress.com/about/
Tom Bryant