MonoManiacs : KTMax ~ KTM 690 Flowjob

22 Апр 2015 | Author: | Комментарии к записи MonoManiacs : KTMax ~ KTM 690 Flowjob отключены

KTM 690 Duke


We picked up our bikes they spend a week at the resort for KTMs, Sommer KTM in Sommer is one of the most experienced and KTM specialists in Europe.

Our bikes a friends 690 SM Prestige and my 690 SMR — got the gas flowed, Duke/SMC cams and the forks were modified.

Two already had a full Akra and one a Leo system. KN airfilters and the gear removed. Sommer uses a dyno that measures at the crank in DIN HP as most manufacturers do.

Stock, the 690 SM is specified at 63 HP.

The before of my SMR put out a healthy 67 HP at 7800 RPM and 70 Nm at 5500 After the flow job and Duke/SMC cam went up to a little over 72 HP at RPM and 73 Nm at the same 5500 RPM at the crank. But maximum figures only half the story.

Both power and torque are up 3 to 5 HP/Nm throughout the ENTIRE rev between 3000 and 8000 The curves are ‘simply’ lifted their full length. and much more useful and on a road bike than a top-end gain.

The Duke/SMC cam in together with the flow job so we no separate info for each But this cam doesn’t do much if anything — for power The timing is virtually identical, the shape of the lobes is a little

At best it changes/improves the throttle and feel of the engine. On its own it’s not worth the effort and cost to fit but the heads had to come off anyhow so.

On the the improvements are hard to miss. Low end is stronger and smoother from up with less chain There’s also clearly vibration throughout the rev range. And the 690 is pretty good on this

Really good! As the graphs the power output remained but there is simply more and that’s what you feel It’s obviously more and faster but the engine actually more relaxed and effortless.

KTM 690 Duke

But it to the redline like mad.

The extra power comes a louder sharper bark the Akra’s too.

The results from my mates’ are exactly the same within 1 HP due to differences between engines. is solid, high quality ‘Heads off’ to Sommer!

The pics give an idea. is the head from the SM Prestige a friend. It has done about 13K

Jan 2009 update: Sommer KTM has sold to new owners and a new crew; KTM West

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KTM 690 Duke
KTM 690 Duke
KTM 690 Duke

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