OzSTOC

Honda ST1100 Section => Oils, Oil Filters & Servicing ST1100 => Topic started by: royst1100 on December 02, 2012, 09:46:32 AM

Title: Re: Cover for a K & N filter on a Honda ST1100
Post by: royst1100 on December 02, 2012, 09:46:32 AM

next trick

(http://i1210.photobucket.com/albums/cc413/royst1100/IMG_20120729_115003.jpg)

(http://i1210.photobucket.com/albums/cc413/royst1100/IMG_20120729_115025.jpg)

covering a k&n filter. tip decrease amount of oil as i found far better performance after first oil change. some usa stocers drill double this amount but ive found its not needed

Title: Re: Cover for a K & N filter on a Honda ST1100
Post by: Greencan on December 02, 2012, 09:49:26 PM

Quote

next trick

Why have you ruined your airbox cover? :'(

Ciao, the can :)

Title: Re: Cover for a K & N filter on a Honda ST1100
Post by: royst1100 on December 08, 2012, 09:29:48 PM

more air! and it does work. k&n filter under cover, lightly oiled not to many holes, pipes but better "performance" (not superbike) has greatly improved. i useto wear plugs out at around 3-5k klms. cannot remember last plug change but long before going to wagga towing trailer. besides that cover damaged and have another good one.

Title: Re: Cover for a K & N filter on a Honda ST1100
Post by: Brock on December 08, 2012, 09:34:39 PM

Quote

i used to wear plugs out at around 3-5k klms

   :eek :eek :eek

I havent even looked at my plugs, and I have had the bike for 60000 Ks

Title: Re: Cover for a K & N filter on a Honda ST1100
Post by: royst1100 on December 08, 2012, 09:38:12 PM

yeh id get usually 1 plug fail, no oviuse wear but uncleanable

Title: Re: Re: Cover for a K & N filter on a Honda ST1100
Post by: saaz on December 08, 2012, 10:27:35 PM

I have tried various combinations of extra air entry points on the ST11 with a K&N filter.  A few probably equivalent to the above add a bit of extra performance, but going too many detracts. Nothing a few rubber grommets to block off a few extra holes won't fix.  Not thta much in it really as the whole air intake system (long trumpets) are the main design parameters that is hard to improve.  A peaky power delivery from an ST11 is really defeating the purpose.

Title: Re: Cover for a K & N filter on a Honda ST1100
Post by: nate on May 14, 2014, 11:49:20 AM

Royce,

Am looking at a K & N filter now. What size holes did you put into your air box?

TIA
Nate

Title: Re: Cover for a K & N filter on a Honda ST1100
Post by: alans1100 on May 14, 2014, 01:02:01 PM

I too have a little trouble with the theory behind what the extra holes in the air box do.

On any given motor the induction stroke will only suck so much air/fuel mixture into a cylinder. By adding extra holes you're only adding another hole for the air to enter which reduces the air inflow from the original inlet.



 

Title: Re: Cover for a K & N filter on a Honda ST1100
Post by: royst1100 on May 14, 2014, 03:21:06 PM

cannot remember but central to the rim.
 as far as stock air flow I can see what you're saying BUT its worked on my ST. I followed several american who'd done this successfully