SuzukiSavage.com - Jetting question

Ruttly Serious Thumper Offline Thumpers Rule Posts: 5053 Manteca , CA Gender:	Re: Jetting question Reply #60 - 11/30/16 at 19:57:12 Thanks Batman , we all thought you were smoking something !
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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5053 Manteca , CA Gender:	Re: Jetting question Reply #61 - 11/30/16 at 20:14:54 Wow Batman I still don't see a vip !
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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5053 Manteca , CA Gender:	Re: Jetting question Reply #62 - 12/01/16 at 04:17:29 Found it Batman sounds good it you got a flatside mikuni
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LANCER

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Re: Jetting question
Reply #63 - 12/01/16 at 05:16:37

Ruttly wrote on 11/29/16 at 20:21:46:

Lancer , So what is the range of the hole sizes when drilling atomizer. Do you have a chart to post or any other info ? Would like to try it before I lower it. So l can compare results. Looking to improve off idle snap. Back to short intake and small foam filter. Thanks

Didn't you get the yellow UFO sheet with the product ?
On page 6 of the yellow sheet it suggests that if you are running too rich after reducing the pilot jet size by 1/2 from stock that you drill a hole through the needle jet "nozzle" using a #55 drill bit to start, and going larger only if needed. It says that you should not go larger than a #40 drill bit, however this was originally written for snowmobiles in the far north. It is much colder up there and I found that I needed to go slightly larger on the LS650 since I lived in SC and now in OK with a milder climate.
I do not remember the conversion for the drill sizes but I do have a little book in the shop with that info and will go out and get it later this morning.
It is 23* outside right now.

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Dave YaBB Moderator ModSquad Offline SuzukiSavage.com Rocks! Posts: 17927 Camp Springs, Kentucky Gender:	Re: Jetting question Reply #64 - 12/01/16 at 05:39:19 LANCER wrote on 12/01/16 at 05:16:37: It is 23* outside right now. Sounds like the advice for snowmobiles might be applicable!
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Re: Jetting question
Reply #65 - 12/01/16 at 11:33:02

Rutty, while it's true that the VIP is designed for the flat side ,I think the idea could be adapted to almost any carb and maybe used with the torque wing on the inlet side, could boost performance from idle to at least half throttle.If it works as claimed we might even be able to use a smaller or stock idle jet and get a little better fuel mileage ,while still having a decent idle.

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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5053 Manteca , CA Gender:	Re: Jetting question Reply #66 - 12/01/16 at 12:16:51 I'm no expert , don't know much about the stock carb. But the 36mm vm mikuni gives great acceleration and then add the UFO & QFTW to really get things moving, I like this carb for it's price & tune ability
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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5053 Manteca , CA Gender:	Re: Jetting question Reply #67 - 12/01/16 at 19:05:21 Lancer , Guilty as charged , I must have been looking at the pictures. Gotta go dinner is ready.
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Re: Jetting question
Reply #68 - 12/01/16 at 20:24:14

Lancer, Now that you explained like that , don't you think that drilling a hole in atomizer to lean it would be the same as removing air jet allowing more air to pass thru ?
Or lowering atomizer to make things happen sooner as slide comes up and removing air jet to help lowered atomizer do its job ?
Both scenarios might require a richer pilot in my case up to a 12.5 from 10
But I think I'm a little rich there already and pretty sure a 10 is the smallest pilot available!
I have all kinds of drill charts at work.

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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5053 Manteca , CA Gender:	Re: Jetting question Reply #69 - 12/01/16 at 20:52:58 Batman , If you try to make one use caution, make sure it don't move ,you wouldn't want it stuck under slide and not be able to shut the throttle down Most of all be Safe !
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Re: Jetting question
Reply #70 - 12/02/16 at 08:48:59

Ruttly ,first off you probably don't need this as they don't make one for carbs smaller than 38mm and stated that smaller carb don't have atomization problems . If I were to build one for the bs-40 I'd be sure it in no way contacted the slide.It looks like like they made their VIP with a flange that fits over the front of the carb and would set in the same grove used to mount the carb. that should stop any movement.

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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5053 Manteca , CA Gender:	Re: Jetting question Reply #71 - 12/02/16 at 10:02:10 I have a BSA flat tracker and once a piece of the slide broke off and got wedged in groove holding at about 3/4 throttle what a ride then it came loose and passed thru engine and got trapped in muffler get this with no damage to engine one tiny mark on piston,good to have big valves !
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