 Thinking of drilling my slides
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I was thinking of drilling the vacuum ports on my slides to 7/64. I read a little how to Drill out your slides and I was wondering if there really is any real benefit to be gained by doing this. It's a pretty simple mod, so I figured "why not", But I thought I'd get some feed back first before I went and permanently changed a part on my bike's carb. Thanks, Bob
'04 Speedy. Emgo 19" turn-outs, Polaris bellmouth, 142/45 Thrux needles, 3.5 turns. Pod filters My Bike
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Re: Thinking of drilling my slides
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Joined: Sep 2007
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Learned Hand
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Learned Hand
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If i'm not mistaken, your slides should already have 3mm holes in them. 
Howbeit when He, the Spirit of truth, is come; He will guide you in all truth:
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Re: Thinking of drilling my slides
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Just did the conversion and 7/64" is acctualy SMALLER than 3mm (7/64"=2.794mm)  . He could have meant 9/64", 1/8". Who knows? Would anyone care to chime in with what size they drilled theirs out to and what difference it made (if any)?
Last edited by v150super; 11/27/2009 7:18 PM.
'04 Speedy. Emgo 19" turn-outs, Polaris bellmouth, 142/45 Thrux needles, 3.5 turns. Pod filters My Bike
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Re: Thinking of drilling my slides
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Joined: Feb 2007
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Fe Butt
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Fe Butt
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Yours should already have the larger holes like our 04s. The advantage to be gained is the slides lift faster giving better throttle response.
I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!
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Re: Thinking of drilling my slides
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Joined: May 2009
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 , but sort of in the same area. Can anyone give me a part# or bike type that we can use the softer Kawi diaphram springs from? I read on another site that the GPz900 springs are recomended, but I can't find a place to order them. Thanks. Sorry for all the questions, I'm looking forward to chiming in with some helpfull info when I have some to give.
'04 Speedy. Emgo 19" turn-outs, Polaris bellmouth, 142/45 Thrux needles, 3.5 turns. Pod filters My Bike
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Re: Thinking of drilling my slides
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I did that & throttle responce was much better
"Got the wind in my face the road goes on for miles...."
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Re: Thinking of drilling my slides
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Joined: May 2009
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Just checked the holes and yep, 3mm. So now I'm thinking about the lighter springs. I'm pretty sure the guy that said "If it ain't broke, don't fix it" never owned a motorcycle  . Edit: found the part# for the springs if anyone is interested 92081-1760. The link takes you to the Bike Bandit site where I ordered mine from.
Last edited by v150super; 11/27/2009 9:11 PM.
'04 Speedy. Emgo 19" turn-outs, Polaris bellmouth, 142/45 Thrux needles, 3.5 turns. Pod filters My Bike
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Re: Thinking of drilling my slides
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Joined: Aug 2005
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Loquacious
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Loquacious
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Quote:
Just did the conversion and 7/64" is acctualy SMALLER than 3mm (7/64"=2.794mm) . He could have meant 9/64", 1/8". Who knows? Would anyone care to chime in with what size they drilled theirs out to and what difference it made (if any)?
drilled mine on my 05 to 7/64. noticable improvement in throttle responce. Definetly worth doing.
Erwin
05 America
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Re: Thinking of drilling my slides
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Joined: Aug 2007
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Should be Riding
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Should be Riding
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The Kawasaki springs will give more response than that hole ever will
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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Re: Thinking of drilling my slides
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What kinda Kawasaki springs did u use
2005 America 145 mains, , #48 pilots, , k&n pod filters, ported intakes manifolds, nology coils and wires, pro com CDI, 62 HP at wheel 68,000 hard miles still runs great gone "traded"
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Re: Thinking of drilling my slides
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Joined: Aug 2007
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Should be Riding
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Should be Riding
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I think they were from a Ninja KZ900 or something, I'll try to find a part number
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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Re: Thinking of drilling my slides
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Joined: Aug 2007
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Should be Riding
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Should be Riding
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Kawasaki part number 92081-1760 Quote:
Here is the stock spring next to the Kawasaki spring, stock on the bottom.
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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Re: Thinking of drilling my slides
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Quote:
drilled mine on my 05 to 7/64. noticeable improvement in throttle response. Definitely worth doing.
Me too. 7/64ths opened it up a might -- '05 865 cc
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Re: Thinking of drilling my slides
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Can drill out the slides and do springs?
2005 America 145 mains, , #48 pilots, , k&n pod filters, ported intakes manifolds, nology coils and wires, pro com CDI, 62 HP at wheel 68,000 hard miles still runs great gone "traded"
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Re: Thinking of drilling my slides
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Joined: Aug 2007
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Should be Riding
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Should be Riding
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Quote:
Can drill out the slides and do springs?
yes,do both
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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Re: Thinking of drilling my slides
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Joined: Feb 2008
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Loquacious
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Loquacious
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Quote:
Can drill out the slides and do springs?
Sure, however the unintended consequence is most probably going to be a lean spike as the slide rises under acceleration with the Kawi springs & larger diameter slide hole. My bike needed 45 pilots to balance things out when I went to the Kawi springs alone.
CVK carbs are at best a compromise.
For reference, my 07 SM has K&N pods, 150 mains, 45 pilots, Thrux needles with (1) .46mm (or so) needle shim, Kawi springs,low speed screws less than 1 turn out, long TORS, & AI removed.
No internal mods yet, however I am awaiting receipt my TPUSA 813 cams 
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Re: Thinking of drilling my slides
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As anyone gone bigger than 7/64ths Im sure bigger isn't always better but sometimes.....
2005 America 145 mains, , #48 pilots, , k&n pod filters, ported intakes manifolds, nology coils and wires, pro com CDI, 62 HP at wheel 68,000 hard miles still runs great gone "traded"
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Re: Thinking of drilling my slides
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Joined: Jan 2008
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Learned Hand
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Learned Hand
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Quote:
As anyone gone bigger than 7/64ths Im sure bigger isn't always better but sometimes.....
yes, I drilled mine to .120 , a number 31 drill. About as snappy a throttle as you are going to get out of the CVK's.
05 speedmaster - 1100cc, 11:1 racing pistons, Carillo rods, thunderbike cams, ported and polished head, 2mm over intake and exhaust valves, Barnett kevlar clutch, scepter pipes, oversize manifolds, 45mm HSR's, TTP stage 4 firestarter
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Re: Thinking of drilling my slides
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Joined: Sep 2007
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Learned Hand
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Learned Hand
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Quote:
yes, I drilled mine to .120 , a number 31 drill.
That's a negligible difference from 3mm...
Howbeit when He, the Spirit of truth, is come; He will guide you in all truth:
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Re: Thinking of drilling my slides
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Joined: Aug 2005
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Loquacious
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Loquacious
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Quote:
Quote:
Can drill out the slides and do springs?
yes,do both
so the Kawi spring is weaker/less stiff?
Erwin
05 America
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Re: Thinking of drilling my slides
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Joined: Aug 2007
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Should be Riding
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Should be Riding
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Yeah, it makes the slide pop right up when you hammer the throttle. Even more of a difference on the bored stock carbs.
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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Re: Thinking of drilling my slides
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I just installed the Kawi springs, balanced my carbs (just a bit off) and WOW! It accelerates like a rocket now. I couldn't believe the difference.  . Best smile to dollar ratio I've found in a while.
'04 Speedy. Emgo 19" turn-outs, Polaris bellmouth, 142/45 Thrux needles, 3.5 turns. Pod filters My Bike
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Re: Thinking of drilling my slides
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Joined: Aug 2007
Posts: 10,730 Likes: 6
Should be Riding
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Should be Riding
Joined: Aug 2007
Posts: 10,730 Likes: 6 |
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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Re: Thinking of drilling my slides
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I ordered kawi springs for mine Tuesday guy said they would be here next Tuesday the suspense is kill me even know the high day was only 40 degrees out side and it isn't going to get any warmer Must get one more ride in this year 
2005 America 145 mains, , #48 pilots, , k&n pod filters, ported intakes manifolds, nology coils and wires, pro com CDI, 62 HP at wheel 68,000 hard miles still runs great gone "traded"
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Re: Thinking of drilling my slides
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I'm guessing that if I install the Kawi springs that it won't affect the jetting, right? Also, do the 08's need to have the slides drilled, or did Triumph make that correction somewhere along the line ?
08 America, A/I &, Calif emissions "stuff" gone, air box removed & battery relocated, billet intakes, UNI Pods, 145 mains, 42 pilots, Stage 2 igniter, intminators, 813 cams, Progressive 412's, modified seat.
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Re: Thinking of drilling my slides
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Joined: Feb 2007
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Fe Butt
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Fe Butt
Joined: Feb 2007
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Triumph made the hole in the slide bigger somewhere along the line before the 08 model year. Shouldn't effect your jetting but could give you a lean spot depending what your jetting is now. I am not sure how much tension difference there is.
I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!
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Re: Thinking of drilling my slides
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Joined: Jun 2009
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Edit: found the part# for the springs if anyone is interested 92081-1760. The link takes you to the Bike Bandit site where I ordered mine from.
Do the springs come in pairs? I went to the site and found the spring for $15, but it didn't say if it was for a single spring or a pair. And I'd have to end up with 2 extra springs in they come in pairs.
08 America, A/I &, Calif emissions "stuff" gone, air box removed & battery relocated, billet intakes, UNI Pods, 145 mains, 42 pilots, Stage 2 igniter, intminators, 813 cams, Progressive 412's, modified seat.
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Re: Thinking of drilling my slides
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I got my springs from the dealer I'll get them tomorrow they were $16 each after tax it was $35 and some change should be about the same with bike bandit
2005 America 145 mains, , #48 pilots, , k&n pod filters, ported intakes manifolds, nology coils and wires, pro com CDI, 62 HP at wheel 68,000 hard miles still runs great gone "traded"
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Re: Thinking of drilling my slides
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Yep, about $15 per spring.
'04 Speedy. Emgo 19" turn-outs, Polaris bellmouth, 142/45 Thrux needles, 3.5 turns. Pod filters My Bike
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