Jump to content

Recommended Posts

Posted

On the stock carbs there is a hole on top of the slides . If you put the needle retainer in one way the hole is open. If you install it the other way the hole is closed. Which way??

Posted

WTF are you guys smoking?? yes...it does matter.

That hole is a vent so the slide can go back down...without it...it can act like a piston and stick on you. The rubber seal will seal dirt and foreign matter out of the carb, but it needs that vent to let it lower down.

 

The retainer for the needle should NOT cover that hole...

 

And yes...I have 100% seen that happen. I completely broke the carbs down, lightly sanded the slide, made sure the idle kit screw hole that was drilled did not nick the other side of the carb.

 

After riding for a few minutes...it would stick...

 

About the third inspection I noticed that...and all was well....

Posted
WTF are you guys smoking?? yes...it does matter.

That hole is a vent so the slide can go back down...without it...it can act like a piston and stick on you. The rubber seal will seal dirt and foreign matter out of the carb, but it needs that vent to let it lower down.

 

The retainer for the needle should NOT cover that hole...

 

And yes...I have 100% seen that happen. I completely broke the carbs down, lightly sanded the slide, made sure the idle kit screw hole that was drilled did not nick the other side of the carb.

 

After riding for a few minutes...it would stick...

 

About the third inspection I noticed that...and all was well....

If the cap on the carbs seal properly, then pressure inside the carb top is equal to pressure in the carb bore, in which case there can be no "piston effect" as you describe. That hole in the slide is actually a fluid drain to remove to allow condensate to escape.

 

That slide sanding expedition you went on wasn't something I was real excited about either.............. Which pretty much ;eaves us at me asking you what you are smoking? :biggrin:

Posted

I'm not sure which side to agree with. From the engineering standpoint mark sounds right, and I don't really think that hole gets plugged off perfectly even if it is covered up, so it would still work how Dave says.

 

And if the hole was plugged, and the carb cap on, you would actually be getting more pressure on the top side (less volume=more pressure) so it would want to force it back down :confused:

 

hm

Posted

isn't the spring under the carb caps, what returns the throttle slides? i know the first year i had my shee, i put those plates in, so they would plug that hole in the slide and i never had an issue. now this year when i cleaned the carbs, i put the plate in the slide, so it doesn't cover the hole. i don't know....it worked for me both ways.

Posted
Wow!!!!

 

 

Damn noobs stirring up trouble. I was thinking that it may make your throttle pull harder if the hole was plugged. Any thoughts

 

There's not really enough volume there to make a difference. Besides like I said earlier, if it is GOING to make it harder it would have to seal off completely and I don't see that happening.

Posted
Gotta disagree...Mark.

If I didn't experience it for myself 100% I'd agree with your theory...sorry.

I realize the scotch pad to the slide thing may be a good idea in certain cases, but I don't think it carries over to the slide drain hole thing.

 

I also realize that you and I probably are not going to agree on this one. :biggrin:

Posted
Wow!!!!

 

 

Damn noobs stirring up trouble. I was thinking that it may make your throttle pull harder if the hole was plugged. Any thoughts

This issue is that I don't think you can completely close off that hole without going way out of your way................. and like was said earlier, you get the same end result no matter which way that gizmo is in there. :cool:

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...