Ladies and gents,
This may be a very, very long shot, but worth a try (my recent posting here looking for Norman supercharger contacts has been very fruitful, for which I am grateful).
In my mucking around with various Norman superchargers, I have managed to get my hands on one of the Mike Norman superchargers (a 12" casing size). This one was apparanty last running on a Mitsubishi, though had sat for some time without use. What has caught my interest is the fuel injector sitting on top of the supercharger. It is a Hilborn injector model U-3, with three 2” throttle plates. The injector was setup to run with a Hilborn pump siamesed to a dry sump setup. It was probably running on a Speedway car, though may well have seen other race use. I’ll pose these queries with the historic speedway guys, but would also like to check with this forum given it’s breadth of knowledge.
The cool thing about Hilborn injectors is that Hilborn keep all their old records, and I was able to get hold of the original build sheet. The injector was originally purchased from Hilborn in the US and shipped to Oz on the 25th of July 1972 by R Brown from Glenunga (Adelaide) South Australia.
The injector was installed on a Peugot 403 engine of 1550cc. I know little of Pug engines, though this strikes me as interesting. The original Pug 403 engine is a 1,468 cc (80mm bore and 73m stroke). To get 1550cc would mean going 90 thou over, which would be unusual (these are wet lined rather than bored so more likely to replace the liner). It is unlikely to be the later 1618cc Pug 404 engine (1960-75) or the Pug 504 (1796cc) engine. If someone wants to school me on how you get 1550cc out of a Peugot, I'm very happy to learn.
I’m keen to contact R Brown, and am hoping that the name rings bells with any of you who were around the Rowley Park circuit in the 70’s. Some early leads indicate that Mr Brown could be a one-arm tyre fitter working for Ray Skipper (possible), or could also be speedcar driver Dick “Jet” Brown, who Bonython imported from the US to race at Rowley Park. “Jet” was brought in pre-1957 though, perhaps a little early to be ordering Hilborn parts in 1972.
Any leads to help track down Mr Brown are appreciated.