Main Motorcycle: 1068cc '05 Thruxton
Join Date: Jan 2009
Location: Turku, Finland
|Air Cooled Twins Technical Talk Technical Talk for Hinckley Triumph Twins: Bonneville, Bobber, T100, Speedmaster, America, Thruxton, and Scrambler.
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Here's a question for the tuners... at what redline will be bike blow up?
As the sig says, I have:
* early '01 790 cams
* shim under bucket conversion
* double vlave springs
* +1.5mm oversize valves
also the following might play a part:
* inlet and exhaust ports have been smoothed and polished
* Wiseco 904
I raised the Procom's rev limiter to 9,000 and everything's been fine for a couple of years. (Yes, I regularly hit the redline.)
This year I made some 48mm headers (internal diameter is 45mm) - and now the bike still pulls quite well at 9k.
I'm quite tempted to raise the redline 100rpm at a time and stop when I feel a dropoff in power... but...
When can I expect everything to let go? 9,050 rpm or 10,000 rpm?
I've also wondered about this; as my '08 red lines on the tach at 7000, but the new model T100's redline at 8000, and the new Thruxtons at 8500.
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