Thanks for the comments ... I just wish I could answer your questions with some authority. I think your knowledge and experience is far beyond what I can offer. My mechanical knowledge is somewhat limited ... fortunately I have become good friends with a couple of like-minded Triumph people over the past 20 odd years who have helped me considerably in my motoring exploits.
So far as the racing and the extractors go, the mechanic who was building the engine felt that the extractors would make some improvement, but I don't have any dyno figures to support this. The cam I was (and will be using) was just a fast road reprofile - can't remember the number - purchased from Triumphtune UK in early 90s. With different needles it was supposed to optimise performance with the SUs.
With the racing, we really started off as absolute amateurs with heaps of enthusiasm, but not the knowledge of what was involved in making these engines go. It seemed all too easy to say "let's go racing".
The class we initially ran the car in was titled Roadrunners, which as the name suggests allowed for very few modifications to Under 2 litre cars (over and above safety items). The Sprint was actually quite competitive in that company (although the standard brakes were never up to the job). That class was disbanded following year and we had to run in a far less restrictive class which allowed full development. As much I would have loved to, a had no budget or knowledge to develop the car the way you and the guys from Sprintparts have and we just ran around at the back and experienced a variety of problems. It was only after hanging up the racing suit that I found out via getting in touch with Nigel Garrett who was winning all the Post Historic Touring Car races in the UK at the time that we should have been running a sandwich plate to stop the bottom end continually cracking the bearing webs. This was really the only major engine problem we had (apart from not developing enough power to be competitive!!) and I once sent a fax to Terry and Triumphtune asking whether this was a common problem and was there a cure. He replied that he had nver heard of the problem before and it must have been a problem with Australian delivered cars only!! That kind of sums up my racing experience ...
Anyway, I guess it didn't completely kill my enthusiasm 'cause here I am building another Sprint ...
Photo test 2 - Project Silver
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Hans ten Broeke
Thanks for the answer,
About; He replied that he had never heard of the problem before , I can asure you, that is the first thing people have been leurned in this field, even eurlier than the normal words people do know MAMA and PAPPA.
The next they learn is: leve it with me I, or we will. and from that on everything stops totaly.
Sometimes you wonder how they ever could make susch a lovely looking car s any way.
Thanks again Hans
About; He replied that he had never heard of the problem before , I can asure you, that is the first thing people have been leurned in this field, even eurlier than the normal words people do know MAMA and PAPPA.
The next they learn is: leve it with me I, or we will. and from that on everything stops totaly.
Sometimes you wonder how they ever could make susch a lovely looking car s any way.
Thanks again Hans