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Re: My 929, eratic idle and judder to 3000rpm [message #299354 is a reply to message #299352] Fri, 11 May 2018 18:42 Go to previous messageGo to next message
Kakugo is currently online  Kakugo   Germany
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(18) Geoff Duke
I didn't know you had a K&N filter installed. It could explain a lot of things.
Re: My 929, eratic idle and judder to 3000rpm [message #299355 is a reply to message #299354] Fri, 11 May 2018 22:04 Go to previous messageGo to next message
slaz is currently offline  slaz   United Kingdom
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(21) Valentino Rossi
"Being a tight arse,me not you,i'd try the plugs first,ok a PITA but
a darn sight cheaper than £157 think"

Thank me later Laugh
Re: My 929, eratic idle and judder to 3000rpm [message #299357 is a reply to message #299354] Fri, 11 May 2018 22:37 Go to previous messageGo to next message
Kermit is currently offline  Kermit   United Kingdom
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(22) Giacomo Agostini
Kakugo wrote on Fri, 11 May 2018 18:42
I didn't know you had a K&N filter installed. It could explain a lot of things.
Can you explain as while I know (probably from here many years ago) the oem Honda filter is very good, K&N aren't exactly cheap tat and pretty much on the standard bearers on track (car and bikes) so while it might or might not breathe a little easier than the oem, its easy to clean & reoil when the whim takes me and will outlast the bike no doubt....think I costed it at 1.5 to 2 oem filter changes = 1 K&N filter (excl the oil)

@Slaz Good call but if it hadn't been the plugs, I'd be down £27 + cost of whatever it was Laugh

[Updated on: Fri, 11 May 2018 22:39]

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Re: My 929, eratic idle and judder to 3000rpm [message #299358 is a reply to message #299357] Sat, 12 May 2018 14:37 Go to previous messageGo to next message
Kakugo is currently online  Kakugo   Italy
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(18) Geoff Duke
Kermit wrote on Fri, 11 May 2018 23:37
Kakugo wrote on Fri, 11 May 2018 18:42
I didn't know you had a K&N filter installed. It could explain a lot of things.
Can you explain as while I know (probably from here many years ago) the oem Honda filter is very good, K&N aren't exactly cheap tat and pretty much on the standard bearers on track (car and bikes) so while it might or might not breathe a little easier than the oem, its easy to clean & reoil when the whim takes me and will outlast the bike no doubt....think I costed it at 1.5 to 2 oem filter changes = 1 K&N filter (excl the oil)

@Slaz Good call but if it hadn't been the plugs, I'd be down £27 + cost of whatever it was Laugh

Do you remember when I said the exhausts on MotoGP bikes are really not Akrapovic or whatever but made by a Honda/Yamaha/Etc subsidiary and just branded for commercial purposes? Same thing about air filters.
Ten Kate (to give an example) has been sponsored by BMC air filters since they have been around, but they have always used Honda OE. The only alteration they do on very fast tracks (such as Monza) is to remove the wire shround around the filter to gain a tiny bit of extra air flow. Honda (or Ducati, or BMW or etc) keep the data for themselves but it's well known their OE air filters and air boxes flow all the air the engine could possibly need, even with high compression pistons (if you can find them: OE pistons are insane these days eek ) and/or different engime management system.
I don't think K&N air filters fit as sloppily or tear as easily as those made by some of their competitors but the whole oiling procedure leaves me very dubious. Even on leafblowers and concrete saws (the two engines eating more dirt per hour in existence) we use ordinary dry paper filters, at most with a dry sponge prefilter to keep the largest particles out.
What does that oil does to the air flow? think
I suspect even K&N doesn't know the answer: motorcycle airboxes have been designed not merely for sheer air volume for for resonance and controlled flow since 1990 at very least. It costs manufacturers millions merely to design one to pair to the engine, with many hours and a lot of computer time going into extremely sophisticated programs I wouldn't even know how to start.

One final thing just remember to push the stick coils all the way in... you don't want to know what happens if you fit one sloppily. Laugh

Re: My 929, eratic idle and judder to 3000rpm [message #299376 is a reply to message #299331] Thu, 17 May 2018 13:56 Go to previous messageGo to next message
Kakugo is currently online  Kakugo   Italy
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(18) Geoff Duke
So... any news? think
Re: My 929, eratic idle and judder to 3000rpm [message #299377 is a reply to message #299376] Thu, 17 May 2018 20:17 Go to previous messageGo to next message
Kermit is currently offline  Kermit   United Kingdom
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(22) Giacomo Agostini
Sorry no not yet and its embarrassing as good weather for UK (for once) yet not quite got round to taking the bike out for a spin or going to work on it Blush

I'm subconsciously probably trying to beat (undercut) last years MOT to MOT mileage figures which were well under 1000 miles according to the tester Wall

[Updated on: Thu, 17 May 2018 20:17]

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Re: My 929, eratic idle and judder to 3000rpm [message #299378 is a reply to message #299377] Thu, 17 May 2018 21:49 Go to previous messageGo to next message
Quazi is currently offline  Quazi   United Kingdom
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(22) Giacomo Agostini
Shocking Kermit that, hold you head in shame. Laugh
Re: My 929, eratic idle and judder to 3000rpm [message #299379 is a reply to message #299377] Fri, 18 May 2018 19:51 Go to previous messageGo to next message
Kakugo is currently online  Kakugo   Italy
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(18) Geoff Duke
Miles going towards testing new parts, repairs etc do not count for the yearly average. Wink
Re: My 929, eratic idle and judder to 3000rpm [message #299588 is a reply to message #299379] Fri, 29 June 2018 23:51 Go to previous message
Kermit is currently offline  Kermit   United Kingdom
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(22) Giacomo Agostini
only took a month for me to get out on to and from work Blush

Its working nicely again so thanks for the recommendation on the plugs as seemed more complex that those basic items Thumbs Up

[Updated on: Fri, 29 June 2018 23:51]

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