You do have to wonder about that. How restrictive is the standard airbox...and is it actually making things worse with regards the breathing concerns? I plumbed mine up the original way ie vent via the rocker cover, and no Yamaha aos fitted. The outlet breather hose from the airbox, goes down to the drive chain.
Hi Stu , Are you saying you take the rocker cover to air box hose all the way down to the chain now with no airbox ? Do you get oil all over the chain or does it stay relatively clean ? You have a motor the way it should be with proper clearances , they should have all been this way .
Hi Nopdog , Did the engine finally break in , or was there another expanation for this good news ?
To be honest Tony, I’m not sure. As I did a number of things at the same time. The “engine breaking in” I think certainly played a part.
Hey @Stu Bodycote just on that, I'm assuming your suggesting that the restriction of the standard airbox leads to increased vacuum at the breather?
I always thought the stock airbox was just too small for the engine.
That's how I've always seen it, the filter opening being the main restriction.
If that was the case, with the position of the intake on the Commando being the restriction, you'd expect to see a significant improvement from the Dominator
Only if the other restrictions were addressed as well.
I have had some in the past, but will look st the breather set up as well...a few things to be considered! I’ll noodle some more on it...
‘If owt’ FE? Just wondering if you‘re from the right side of the Penines?
Hello,
I thought Clive had a definitive answer on the dyno with his efforts ? The clamp on K&N project yeilded 5 HP mid range and 3HP on top with a torque boost . Does anyone recall this ?
I thought Clive had a definitive answer on the dyno with his efforts ? The clamp on K&N project yeilded 5 HP mid range and 3HP on top with a torque boost . Does anyone recall this ? I saw similar results , but my data was not gathered as scientifically . Now 3HP may not seem like much , but if you like the look and it is done more professionally with a tuner it's a proven way to go in my view. !
3-5 doesn’t sound like much until the other guy wins the race.
Hello Clive , I am glad you responded to this . I seem to remember that you did a thorough dyno tune with air box and then put in the K&N clamp on air filter modification and got improved dyno results ? My flawed effort didn't get the stock airbox numbers first . Some are still sceptical of this approach and think it is an imaginary improvement . I've got a mind to do a video showing how quickly mine pulls to the rev limit at top speed.
Think we’d all be interested in seeing that video Tony! In awe of you more technically inclined types and your travails in maximising this somewhat flawed machine! I hope some day to be able to ‘ride on your collective coat tails‘ and follow the idiots guide to 961 success! Until then, I’ll keep riding and hope that it doesn’t explode!!
