290 mains for a k&n ?

[stockridinshee]

yes i understand that but it doesnt ever bog at all, it just does the reving and every time i go up on the main it gets better. should i just go back down to a 260 or so and leave it or what? im just not undsertanding why i could even have a 290 in it and be able to ride it if im that far off. cause if i should be at 240 or so like most of you thats pretty far off. i would think it wouldnt even run and if it did it would just foul plugs all day.

 

i run 50:1 with klotz and 93 pump gas.

 

also what do i cut the plus with to do a plug chop? i dont have a dremel or anything that would cut it. what about a grinder?

 

thatnks once again for all your help guys

[Rare Scottish Tree Badger]

yes i understand that but it doesnt ever bog at all, it just does the reving and every time i go up on the main it gets better. should i just go back down to a 260 or so and leave it or what? im just not undsertanding why i could even have a 290 in it and be able to ride it if im that far off. cause if i should be at 240 or so like most of you thats pretty far off. i would think it wouldnt even run and if it did it would just foul plugs all day.

 

i run 50:1 with klotz and 93 pump gas.

 

also what do i cut the plus with to do a plug chop? i dont have a dremel or anything that would cut it. what about a grinder?

 

thatnks once again for all your help guys

395341[/snapback]

Every motor's different. ... Yours is maybe breathing better.

 

I asked about your premix ratio to see if you were running a lean fuel to oil ratio, but you're not.

 

I would do the plug chop with the 290s first. ... Better to be too rich than too lean at WOT. Warm up the bike on old plugs and swap in new plugs for the WOT run.

 

Here's a pic of cut plugs. ... The one on the right is cut with a grinder and the left is with a hacksaw. Much neater with the hacksaw - cut through the threads (about 5 threads from the washer) until you feel the teeth against the porcelain, they'll just slide and not cut, and then move round the plug a bit further. Once all the way around, the upper threaded portion with the earth strap will just pull off.

*

Rare.