Hello List,
First, Happy Independence Day weekend USA!
Since I have a stock 72 TR6 with carbs, A type overdrive and dual exhaust, the
highway rpm range is from 2100 to 3000 depending on traffic and road
conditions. I am interested in maximizing the lower torque range from 1200 to
3000 rpm. I am not interested in HP ratings. Torque gets you down the road.
The web site Triumph 2000 Tuning website
http://www.kvaleberg.com/t_tune.html
has an extensive list of camshaft profiles for PI models. It seems that the
stock camshafts are better suited to my needs. The pre 72 USA TR250/TR6
camshaft (10/50 50/10) has a power band 1500- 4800 and the currently installed
72 onwards USA camshaft (18/58 58/18) has a power band 2000-5000.
1. If the pre 72 camshaft is put into a stock 72 motor, what are the opinions
from the list about a possible torque increase and performance if any?
2. Would I get a similar result by increasing the valve lift with 1.55:1
roller rockers on the currently installed camshaft 72 onwards?
3. Any other suggestions for increasing the low end torque?
4. Or am I just wasting my time and future money for a small performance
increase?
I am only considering options available in the future if/when I need/decide to
rebuild the engine. I could collect the parts when they are on sale in the
future. I will probably do a little autocrossing at the local scca events
after getting the suspension up to the task.
Thanks,
Greg Perry
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