SuzukiSavage.com - where to start with VM36 tune

savagebob Full Member Offline SuzukiSavage.com Rocks! Posts: 235	Re: where to start with VM36 tune Reply #15 - 11/05/13 at 19:51:04 ok cool i'll follow your route.. are you sea level? I think I'll need at least the same size primary jet as my exhaust is larger dia all the way through and it's ported out
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Alcohie YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 16 Onalaska, Texas	Re: where to start with VM36 tune Reply #16 - 11/06/13 at 07:10:04 Just 130ft or so above sea level, keep me updated on your progress!
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savagebob

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Re: where to start with VM36 tune
Reply #17 - 11/06/13 at 21:59:15

Ok well the carb is pretty straight forward now that I've opened it up for a looksie.

But, my pilot jet is soldered closed? It's also VERY hard to see the numbers on them lol. My eyesight is good but man, you need a magnify glass to see anything.

My needle had the clip on the second notch, I lowered it down to the 3rd notch and put it back together but still not gonna run without enricher.

It maybe ran for like.. a second and then dies.. which is a second better than before but not enough.

So.. where to.. should I take the sealed primary out and put in something??

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LANCER Serious Thumper Alliance Member Offline Savage Beast Performance Parts Posts: 10661 Oklahoma Gender:	Re: where to start with VM36 tune Reply #18 - 11/07/13 at 03:34:14 Responded to your email; swap the soldered pilot for the #15
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savagebob Full Member Offline SuzukiSavage.com Rocks! Posts: 235	Re: where to start with VM36 tune Reply #19 - 11/08/13 at 19:40:14 Ok I've dropped in the #15 pilot, needle back to 2nd notch now it idles, lots of backfires though when I twist the throttle to 1/4 - 1/2 and pops and shut off with a boom. Alcohie are you running the UFO?
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LANCER Serious Thumper Alliance Member Offline Savage Beast Performance Parts Posts: 10661 Oklahoma Gender:	Re: where to start with VM36 tune Reply #20 - 11/08/13 at 21:45:43 savagebob wrote on 11/08/13 at 19:40:14: Ok I've dropped in the #15 pilot, needle back to 2nd notch now it idles, lots of backfires though when I twist the throttle to 1/4 - 1/2 and pops and shut off with a boom. Alcohie are you running the UFO? What is your pilot screw setting ?
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Alcohie YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 16 Onalaska, Texas	Re: where to start with VM36 tune Reply #21 - 11/08/13 at 21:55:10 Yes I have ufo, try letting it warm up at idle for 10 to 15 mins then adjust the mixture screw clockwise about a 1/4 turn at a time and see if it improves any, the idle will probably raise a little when adjusted note how many turns out! If less then 1 turn out go up to a 17.5 (advice I received from lancer)
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savagebob Full Member Offline SuzukiSavage.com Rocks! Posts: 235	Re: where to start with VM36 tune Reply #22 - 11/09/13 at 02:44:57 It's got 1.5 turns out.. so I adjust the screw and when the idle picks up a bit faster that's the correct spot? It's sorta hard to tell the difference in idle at all from the screw to be honest. I took it for a ride but anything above a slow cruise and it surges and pops, like it wants to go but it can't.
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LANCER

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Re: where to start with VM36 tune
Reply #23 - 11/09/13 at 04:10:46

Once completely warmed up, when you are ready to adjust the pilot screw, it can be helpful to raise the idle up with the idle screw. Take it up to 1500-1800 rpm, or if you do not have a tach then raise it so there is a significant increase in rpm just based on your estimate from the sound.
By raising the rpm this way, the engines changing rpm/sound from the pilot screw adjustment is easier to notice because the engine is a little more responsive to the pilot screw changes. You want to find the place where the rpm is maximized during pilot screw adjustment. When you find this BEST setting, if you turn either right or left, the engine will decrease rpm. There is usually a small range right & left (like 1/4 turn or so) where there is no noticeable change, and if so, then set the screw at the mid point between those to marks.
Of course, if you find the engine rpm continues to increase as you go to either full rich (less than 1 turn out), or near 3 turns out on the lean side, then you should change the pilot jet accordingly and start the tuning again from the 1.5 turn out position.

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savagebob

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Re: where to start with VM36 tune
Reply #24 - 11/12/13 at 02:06:26

ok I tried a #15 pilot and the needle at no.3 notch, screw 2 turns out. Ran better but with a big rough patch around 1/4 - 1/2 throttle. If I slowly turned throttle it's ok, but if I crank it quickly it stumbles.

Put needle back to no.2 notch and symptoms were worse.

Replaced pilot with #17 with needle at no.2 screw 1.5 turns out. Running better but still with the rough patch when I snap open the throttle quickly.

Also, I aways get a gunshot out the exhaust approx 2 seconds after I turn it off. How do I get rid of that?

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LANCER Serious Thumper Alliance Member Offline Savage Beast Performance Parts Posts: 10661 Oklahoma Gender:	Re: where to start with VM36 tune Reply #25 - 11/12/13 at 02:56:32 keep the 17.5 pilot and take the needle clip back to the #3 slot adjust the pilot screw as needed for best rpm that should improve your 1/4-3/4 response
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savagebob

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Re: where to start with VM36 tune
Reply #26 - 11/15/13 at 01:38:16

that got it. 17.5 pilot, needle at 3rd notch and screw 1.5 turns out.

Way way better, I think I could still tweak it slightly tho. Launches hard in 1st, but chop into 2nd and wot and it bogs for just a moment before accelerating really hard. Might just play with the screw slightly.

Feels much quicker than when I first got the bike! Acceleration off the line is good. It's gonna be interesting when this supercharger goes on..

Cheers Lancer

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savagebob Full Member Offline SuzukiSavage.com Rocks! Posts: 235	Re: where to start with VM36 tune Reply #27 - 12/02/13 at 12:23:38 I've played with this some more, I've got it pretty good but if I wind it wide open in 1st or 2nd there is an annoying hesitation before it pulls hard. How would I go about getting rid of this?
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verslagen1 YaBB Moderator ModSquad Online Where there's a will, I want to be in it. Posts: 28884 L.A. California Gender:	Re: where to start with VM36 tune Reply #28 - 12/02/13 at 14:44:23 savagebob wrote on 12/02/13 at 12:23:38: I've played with this some more, I've got it pretty good but if I wind it wide open in 1st or 2nd there is an annoying hesitation before it pulls hard. How would I go about getting rid of this? raise the needle I believe.
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savagebob Full Member Offline SuzukiSavage.com Rocks! Posts: 235	Re: where to start with VM36 tune Reply #29 - 12/02/13 at 17:57:25 hmm it's already at the 3rd notch wouldn't that make everything too rich? That said.. I've tried adjusting the air screw and can't get rid of the hesitation, it pulls hard after it splutters for a bit.
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