Triumphrat

robnobrakes · 09-25-2006

Modifications:

Airbox removal

K & N Filters

Rejet 138 (up from 110)

1 Tooth up on front sprocket.

All carried out at Bob Farnham Tuning, Wrotham, Kent TN15 7RR.

Rear Wheel Horsepower with TORS cans: 60.1 BHP

Rear Wheel Horsepower after 65.1 BHP

Rear Wheel Torque with TORS cans: 49.1 ft lbs

Rear Wheel Torque after 55.5 ft lbs

power
torque

sweatmachine · 09-25-2006

wow! 65hp and 55 ft lbs, those are good numbers!

Some 904cc big bore guys are not far from that...

thanks for sharing!

robnobrakes · 10-14-2006

Cylinder head now skimmed, ported and gas flowed.

Rear wheel BHP now 70.6

Rear wheel torque now 60.3ft/Lbs

This bike is quick. My mate on his 955i Speed Triple had to work hard to get past (in a staight line accelleration test). He does not keep up on the twisties

[ This message was edited by: robnobrakes on 2006-10-14 22:58 ]

ratcat · 10-14-2006

interesting why I achieved even more power changing headers and mufflers only, no other mods (!), look:

caspianthruxton · 10-14-2006

what header and mufflers are you running?

robnobrakes · 10-15-2006

[quote]
On 2006-10-14 11:44, ratcat wrote:
interesting why I achieved even more power changing headers and mufflers only, no other mods (!),

Interesting graphs.

Very good top end power. The torque is not so strong, nor is the mid-range power.

I wonder what the curves would be like with your exhausts and headers with the cylinder head work, K&N's and rejetting.

Pict · 10-16-2006

Rob

How much material did you take off (skim) the head?

robnobrakes · 10-16-2006

Pict

I didn't do the work myself so don't know. Compression ratio has been increased from the original (measured) 9.2 to 1 to 10.4 to 1.

sweatmachine · 10-16-2006

yeah find out how much material was removed for us please!

I think if you get some cams that motor will really sing, 70 hp is good though!

robnobrakes · 10-16-2006

Bob Farnham advised me that the standard 790cc Bonnie cams (higher lift/longer duration apparently) will give another 6 or 7 BHP at the top end, with a similar loss low down. I'm not sure I want to loose the low down power though.