The original exhaust systems on Healeys were very different from those currently available.
This deviation from “originality” is particularly evident on the BJ8 and is not mentioned in any of the “authoritative” books I have read. This is my attempt to ensure that this detail of originality will not become lost as the years pass.
Some of the differences that I have noted are as follows.
The front down pipes utilized one continuous sweeping curve rather than the series of small bends on the mild steel systems that have been available for the last 20 or so years.
I believe some of the stainless systems may have the single curve but of course stainless in definitely not original.
These are a pair that I had hanging around for years for when I build my BJ8 “museum” car..which I don’t think is ever going to happen.
The front mufflers are constructed entirely differently from anything I have seen available for many years. The parts book shows what I believe were the original type.
The mufflers originally used were what I describe as “pinched end” mufflers. These were “straight through” type mufflers and were stuffed with fiberglass. The metal used was quite heavy and they actually lasted for a very long time in good climates. Each muffler is 27 1/4″ long and oval in shape 31/2″ x 5 1/8″ and there is a folded and crimped seam along the top center. The edges where the pinched sections meet appear to be TIG welded together.
I had a couple of these they are both lefts, not a pair.
The parts book shows that the rear mufflers were not of the “pinched end” type but, like a few other things in the parts books, I believe that illustration shows what was available from the parts system rather than what was actually fitted to the cars. This did not happen very often as the original parts books are amazingly accurate and the only other questionable item which springs to mind are the felt insulation pads which are illustrated as fitted to the inside of the bonnet of non U.K. cars. I have never seen these or any evidence of them, however I digress.
The parts book shows the rear mufflers (resonators) as being the crimped end type rather than the “pinched end” type. I have seen a number of very original cars where the resonators were the pinched end type and am fairly convinced that these were what was originally installed.
Fortunately the hanger and clamps have been quite faithfully reproduced.
I’m sure there are people out there who have seen more original systems than I have and I would appreciate any comments or corrections.