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Old 03-17-2010, 11:37 PM   #1
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Default factory settings on a OS Vspec

anyone got the factory needle settings off the top of there head for an OS vspec. i got one that developed a small air leak out of the carb and was chasing my tail all night trying to tune it and now that i caught the leak my tune is so far out of whack i need to retune so was just going to start from scratch
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Old 03-17-2010, 11:45 PM   #2
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i think its 2 turns in from flush on top or 3 1/2 turn out from all the way in and its about flush on bottom maybe 1/4th turn in. i always start at flush and tune from there.
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Old 03-18-2010, 11:39 PM   #3
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HSN = 3 turns out from fully closed.
LSN = flush with collar.
Idle = 0.5 - 1mm
And if you fiddled with the "Middle speed needle", its 1 turn in from flush.

Here is a link to the V-Spec's manual. See pages 17 and 22.
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Old 03-19-2010, 05:34 AM   #4
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Originally Posted by Rampokker View Post
HSN = 3 turns out from fully closed.
LSN = flush with collar.
Idle = 0.5 - 1mm
And if you fiddled with the "Middle speed needle", its 1 turn in from flush.

Here is a link to the V-Spec's manual. See pages 17 and 22.
You may see other settings, but the one's listed in Rampokker's post, and the manual in that link are the most recent "revised" settings, per the OS tech support rep I spoke with a couple of months ago about this.
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Old 03-19-2010, 06:06 AM   #5
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You may see other settings, but the one's listed in Rampokker's post, and the manual in that link are the most recent "revised" settings, per the OS tech support rep I spoke with a couple of months ago about this.
yeah, it clearly states that the mid range needle should be one turn in from flush. The old manual (the one that i have), says it should be flush with the carb body.

I want to turn it in like the new manual says, but is it neccesary? Should i just go ahead and do it now while i am breaking in? Does this apply to the ninja also?

The ninja manual tells you nothing.
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Old 03-19-2010, 06:53 AM   #6
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yeah, it clearly states that the mid range needle should be one turn in from flush. The old manual (the one that i have), says it should be flush with the carb body.

I want to turn it in like the new manual says, but is it neccesary? Should i just go ahead and do it now while i am breaking in? Does this apply to the ninja also?

The ninja manual tells you nothing.
The tech support rep was saying that the original settings were found to be a bit on the rich side. One turn in from flush on the MRN made the engine more responsive. The extra half turn out on the HSN gives back some of the fuel that is lost by leaning out the MRN.

I don't know about the Ninja....
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Old 03-19-2010, 07:00 AM   #7
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i am misunderstanding something. The hsn is still the same, yet you say an "extra" half turn.

So the hsn sould be three and a half?

Or are you talking a race tune will be a full half turn (which is alot) richer then what you normally have?
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Old 03-19-2010, 08:30 AM   #8
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Man never never never touch the middle needle only bad will come from it.
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Old 03-19-2010, 12:35 PM   #9
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Man never never never touch the middle needle only bad will come from it.


i hear you. But if you mark on your carb the original position and you make a mistake, all you have to do is return it to the original spot.

Besides, if a turn on my middle needle will make my engine run that much better it's worth a shot.
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Old 03-19-2010, 12:35 PM   #10
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Originally Posted by Stubbs View Post
You may see other settings, but the one's listed in Rampokker's post, and the manual in that link are the most recent "revised" settings, per the OS tech support rep I spoke with a couple of months ago about this.
I was wondering about that exact same thing yesterday stubbs. I just happened to tune my car from factory settings yesterday after putting in a new rod and carb needle o-rings. I couldn't find the paper manual that came with my engine, so I got the pdf off the web. Could've sworn I saw the factory settings for the MRN to be flush when I got the engine. Thanks for clearing it up.
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Old 03-19-2010, 01:04 PM   #11
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The Mid Speed Needle should ALWAYS be flush with the carb body at the 11 O' clock position. I don't know what OS is thinking telling people to run it 1 turn in. 1 turn on the MSN is HUGE!
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Old 03-19-2010, 04:51 PM   #12
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The Mid Speed Needle should ALWAYS be flush with the carb body at the 11 O' clock position. I don't know what OS is thinking telling people to run it 1 turn in. 1 turn on the MSN is HUGE!
my thoughts excactly. That is why i won't do it. Mine is running just fine.

if it aint broke don't fix it.
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