Just some added info-
When Col. Joe Hauser started developing race engines for his 1600, he and
his cam grinder started out with a chevy cam profile, if I remember
correctly. After a lot of time on a dyno, he settled on a profile commonly
known as a 'BL-4.' The "BL" just happens to stand for British Leyland.
This has turned out to be a good cam for a 'workhorse' race motor, and most
folks that have been racing a 1600 for any length of time have probably used
this profile.
When I had a cam ground up about a month ago, Dema Elgin recommended a
british "A-series" engine cam profile, but opened up the lobe centers to 108
degrees to move the power band up a little higher in the rpm range. So, I'm
producing peak hp at about 8000 rpm. Keep in mind that the rules require us
to use stock SU carbs, but that doesn't mean the carbs don't receive quite a
bit of special attention.
Fellow racer Bill Wessel and I have been using the desktop dyno software off
and on for about two years to look at different cam profiles and engine
combinations for the 1600 race motors. The results it gives seem to make
sense, and correlate with real dyno numbers within about 5-10%.
The 'short bus' Datsun 510's are really making lot's of power on the track
these days. We're working hard to find cam profiles that will produce good
horsepower, but still give us good reliability.
Happy roadstering,
--
Chris Coker
69 1600 SPL311 <http://mywebpages.comcast.net/chriscoker/roadster.html>
66 1600 GP Race Car www.risensonracing.com
Royal Oak, MI
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