Questions on valves.

krolinked · February 8th, 2013, 11:51 PM

So I adjusted my valve clearances to the loosest possible while still being "In Spec" My engine is pretty loud. Will I cause any damage like this?
Both the Intake and Exhaust clearances are at their max clearances.

Also, I have Idle screws turned ALL the way in on my carbs, how do i know where they should be adjusted to? Bike currently idles, but is very laggy with throttle response.

cuong-nutz · February 9th, 2013, 12:56 AM

What mods, do you have on your bike? full exhaust, slip-on, stock intake, stock intake without snorkel, aftermarket oem style air filter? or Pod filters? Shimmed needles?

Generally 2.5 full turns back out from bottomed out is a good starting point for the idle mixture screws.

krolinked · February 9th, 2013, 02:57 AM

Stock Exhaust, K&N Drop In Air Filter. 100 Main Jet, Factory Pro Needles middle position.

Motofool · February 9th, 2013, 05:52 AM

Quote:

Originally Posted by krolinked

.........My engine is pretty loud.........

Service and lubricate your cam chain tensioner (CCT).

krolinked · February 9th, 2013, 08:49 AM

Quote:

Originally Posted by Motofool

Service and lubricate your cam chain tensioner (CCT).

I've got a manual chain tensioner because i broke my last one. It is taking up the slack so its i think the valves themselves making the noise.

alex.s · February 9th, 2013, 11:57 AM

100 main is way too rich for stock setup like yours. The drop in air filter doesn't make much difference

cuong-nutz · February 9th, 2013, 12:05 PM

When you said loud, what do you mean? Did you cover up the KLEEN air system?

tubarney · February 9th, 2013, 06:37 PM

You only need a 98 main jet and no shims under your washers with a stock airbox with the snorkel still in. I have a dyno sheet to prove this.

Clean your shim buckets, my mates car engine was making a ticking a noise and it turned out to be dirty tappets.

krolinked · February 10th, 2013, 11:40 PM

Quote:

Originally Posted by alex.s

100 main is way too rich for stock setup like yours. The drop in air filter doesn't make much difference

I am having a world of problems with this bike.
I can only get it to idle, and no amount of throttle manipulation can get the bike to rev up any. Could the main jet affect it like this? I even put the stock needles back in an nothing.

cuong-nutz · February 11th, 2013, 07:05 AM

Are you positive that the diaphragms are not torn and all the jet and air orifices in the carbs are clean and clog-free?

alex.s · February 11th, 2013, 10:38 AM

Quote:

Originally Posted by krolinked

no amount of throttle manipulation can get the bike to rev up any

it dies? or does nothing? did you connect the throttle cables?

krolinked · February 11th, 2013, 04:22 PM

It does not rev up. I am manually opening the butterflys with my finger. It will die if i slam the throttle shut, but does not rev up when i open it.

Diaphrams are not torn

February 8th, 2013, 11:51 PM	#1
krolinked Nerd Name: Chris Location: Tujunga Join Date: Mar 2012 Motorcycle(s): Ducati Hyperstrada Posts: 672	Questions on valves. So I adjusted my valve clearances to the loosest possible while still being "In Spec" My engine is pretty loud. Will I cause any damage like this? Both the Intake and Exhaust clearances are at their max clearances. Also, I have Idle screws turned ALL the way in on my carbs, how do i know where they should be adjusted to? Bike currently idles, but is very laggy with throttle response. __________________________________________________ It doesn't LOOK that steep. But you can go first...

February 9th, 2013, 12:56 AM	#2
cuong-nutz RIP Alex Name: Cuong Location: Houston, TX Join Date: Apr 2011 Motorcycle(s): '10 250r, '09 265r Posts: A lot. Blog Entries: 2	What mods, do you have on your bike? full exhaust, slip-on, stock intake, stock intake without snorkel, aftermarket oem style air filter? or Pod filters? Shimmed needles? Generally 2.5 full turns back out from bottomed out is a good starting point for the idle mixture screws. __________________________________________________ HalfFast Racing Team Serving Greater Houston Area Riders:WFO Riders MotoHouston HPC CMRA Ride Smart Fastline Lone Star Track Days

February 9th, 2013, 02:57 AM	#3
krolinked Nerd Name: Chris Location: Tujunga Join Date: Mar 2012 Motorcycle(s): Ducati Hyperstrada Posts: 672	Stock Exhaust, K&N Drop In Air Filter. 100 Main Jet, Factory Pro Needles middle position. __________________________________________________ It doesn't LOOK that steep. But you can go first...

February 9th, 2013, 11:57 AM	#6
alex.s wat Name: wat Location: tustin/long beach Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much. Blog Entries: 5 MOTM - Oct '12, Feb '14	100 main is way too rich for stock setup like yours. The drop in air filter doesn't make much difference __________________________________________________

February 9th, 2013, 12:05 PM	#7
cuong-nutz RIP Alex Name: Cuong Location: Houston, TX Join Date: Apr 2011 Motorcycle(s): '10 250r, '09 265r Posts: A lot. Blog Entries: 2	When you said loud, what do you mean? Did you cover up the KLEEN air system? __________________________________________________ HalfFast Racing Team Serving Greater Houston Area Riders:WFO Riders MotoHouston HPC CMRA Ride Smart Fastline Lone Star Track Days

February 9th, 2013, 06:37 PM	#8
tubarney ninjette.org sage Name: Brad Location: Sydney Join Date: Mar 2012 Motorcycle(s): Ninja 250r 2010 SE Posts: 573	You only need a 98 main jet and no shims under your washers with a stock airbox with the snorkel still in. I have a dyno sheet to prove this. Clean your shim buckets, my mates car engine was making a ticking a noise and it turned out to be dirty tappets.

February 11th, 2013, 07:05 AM	#10
cuong-nutz RIP Alex Name: Cuong Location: Houston, TX Join Date: Apr 2011 Motorcycle(s): '10 250r, '09 265r Posts: A lot. Blog Entries: 2	Are you positive that the diaphragms are not torn and all the jet and air orifices in the carbs are clean and clog-free? __________________________________________________ HalfFast Racing Team Serving Greater Houston Area Riders:WFO Riders MotoHouston HPC CMRA Ride Smart Fastline Lone Star Track Days

February 11th, 2013, 04:22 PM	#12
krolinked Nerd Name: Chris Location: Tujunga Join Date: Mar 2012 Motorcycle(s): Ducati Hyperstrada Posts: 672	It does not rev up. I am manually opening the butterflys with my finger. It will die if i slam the throttle shut, but does not rev up when i open it. Diaphrams are not torn __________________________________________________ It doesn't LOOK that steep. But you can go first...

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