SV650.org - SV650 & Gladius 650 Forum - View Single Post

Seeker · 21-02-19, 09:30 PM

Welcome.

The K1 is red lined at 10500, maximum power is developed at 9000 rpm so power will drop off after that. If you were in a hurry changing gear at 9k rpm would be best. Running it up to 11k will not be any quicker and risks engine damage if done repeatedly.

If you feel the bike isn't as quick as it used to be there are questions:
1) how old are the plugs?
2) how old is the air filter?
3) when were valve clearances last checked?
4) how many miles has the bike done?
5) does it burn oil

If there's a blocked (or partially blocked) main jet in one carb, a plugged exhaust, an air leak - all of these can reduce power. I think there used to be issues with foam under the tank obstructing the air intake on older bikes.

21-02-19, 09:30 PM	#3
Seeker Member Mega Poster Join Date: Jun 2016 Location: NE Lincs Posts: 1,069	Re: Hello all Welcome. The K1 is red lined at 10500, maximum power is developed at 9000 rpm so power will drop off after that. If you were in a hurry changing gear at 9k rpm would be best. Running it up to 11k will not be any quicker and risks engine damage if done repeatedly. If you feel the bike isn't as quick as it used to be there are questions: 1) how old are the plugs? 2) how old is the air filter? 3) when were valve clearances last checked? 4) how many miles has the bike done? 5) does it burn oil If there's a blocked (or partially blocked) main jet in one carb, a plugged exhaust, an air leak - all of these can reduce power. I think there used to be issues with foam under the tank obstructing the air intake on older bikes.