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Offline Dick

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k & n filters
« on: October 10, 2018, 06:33:33 PM »
Is it worthwhile fitting a k & m air filter? If so how much more b h  P   @ torque ,without  remapping & should ,some service be cheaper ?
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Online grunty-motor

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Re: k & n filters
« Reply #1 on: October 10, 2018, 08:57:47 PM »
1-2bhp maybe.......maybe

Online UncleGary

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Re: k & n filters
« Reply #2 on: October 11, 2018, 01:05:51 AM »
I think the reason K&N doesn't claim specific performance improvements in their advertisements is that they can't back it up with evidence. As far as I know their stuff is well made but whether it is worth the price they ask is another thing.

The other way to look at it is that Triumph knows what the potential of the engine is. If a better filter would send performance way up, they would have done it. Filters are relatively cheap compared to engine development and research.

Offline Dick

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Re: k & n filters
« Reply #3 on: October 11, 2018, 09:24:10 PM »
When I get some Money, I will tray one on a rolling  road,  back to back ,first I will see if it changes the tick over! Good Indication of breathing, thank for your input, will resort back,
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Online Stevie.P

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Re: k & n filters
« Reply #4 on: October 11, 2018, 11:15:54 PM »
*Originally Posted by Dick [+]
.... first I will see if it changes the tick over! Good Indication of breathing, thank for your input, will resort back,

.... yes, in the days of carburettors and a mechanically set tickover screw, but the ECU electronically controls the tickover and will simply hold it back at its set parameter. :084:
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Offline K1W1

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Re: k & n filters
« Reply #5 on: October 12, 2018, 03:26:38 AM »
On a modern fuel injected computer controlled bike the performance improvements will be between the riders ears rather than at the rear wheel.
You would be far better off to install a Unifilter pre filter and save yourself the hassle of having to change the OEM on a regular basis.

Offline Paulhere

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Re: k & n filters
« Reply #6 on: October 12, 2018, 08:56:57 AM »
*Originally Posted by Dick [+]
Is it worthwhile fitting a k & m air filter? If so how much more b h  P   @ torque ,without  remapping & should ,some service be cheaper ?


You shouldn't lose too much.
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Offline Dick

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Re: k & n filters
« Reply #7 on: October 12, 2018, 04:38:15 PM »
I was hoping for a gain! I have spoken to my local rolling road experts, To day, well respected, & They say a k & m filter has 50 percent less resistance on a flow meter,(got to be worth it ) I presume a off road bike has a very thick filter. My 250 crf had one, also had to cover it it oil.once in a wile.
 
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Offline Paulhere

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Re: k & n filters
« Reply #8 on: October 12, 2018, 05:02:49 PM »
*Originally Posted by Dick [+]
I was hoping for a gain! I have spoken to my local rolling road experts, To day, well respected, & They say a k & m filter has 50 percent less resistance on a flow meter,(got to be worth it ) I presume a off road bike has a very thick filter. My 250 crf had one, also had to cover it it oil.once in a wile.

Depends if it fits the airbox if it's gonna work at all. I bought one for my ST1050, didn't fit the airbox, phoned the supplier who sent another, that didn't fit either, sent them both back & fitted oem, perfect fit in the seal grooves.

I fitted a K&N in my Yam trail bike, ok up to half throttle, tried larger jets & again but it got nicked before I got it to run right above half throttle. It was carb'd.

Any point having more air coming in unless more can get out? Your money, try it & let us know.

I think Triumph have done pretty well to get 94bhp from a 800cc motor with decent mpg & reliability. Why screw it up. Honda's Africa twin is same 94bhp from a 1000cc but weighs a bag of cement more.

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Offline Dick

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Re: k & n filters
« Reply #9 on: October 12, 2018, 06:37:29 PM »
My wife,s   street triple 765 has 122 bhp  ,I just want to keep her in sites ! & 40 k less 'I know it's a different sort  of bike! The tiger is just too big for her.looking @ the new 1200 street Scrambler looking @ it  ( N E C  next month )
just because you have your eyes open does not mean you are alive!

 


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