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Space Docker
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 Post subject: carb mod
PostPosted: Fri Jul 22, 2011 11:23 pm 
Just wondered if anyone else has tried this, and if it helped any.......I'm sure I can't be the first.
I ground off the lip on the inside of the carb "throat" and polished everything nice and smooth. Seems like it should slightly improve airflow and cut down on turbulence a little. Sometimes small things can make a big difference.
Don't know when I'll get to try it out, it's been right around 100 degrees and doesn't start to cool off 'til after 10 pm. I've been trying to find things to do INSIDE the house. :)

So what do you think, good idea, bad idea, won't matter? :meh:

Image

EDIT 12/2/14: Should have edited this a long time ago. It turned out that I had taken it down too far at the outer edge. When I tightened the clamp, the lip just crumpled up and broke off: :oops:

Image

Now I leave about 1 - 1.5mm around the outer edge. Here's a much more recent example. I ran this carb all summer, and the lip is still intact.

Image

Image

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Last edited by oldfart55 on Tue Dec 02, 2014 10:12 pm, edited 1 time in total.

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Sith Slayer
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 Post subject: Re: carb mod
PostPosted: Sat Jul 23, 2011 5:49 am 
sounds right, let us know how it works.

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 Post subject: Re: carb mod
PostPosted: Sat Jul 23, 2011 12:51 pm 
i was thinking of doing this same thing! :banger: i think this should help a lot since carbs are so sensitive to airflow an turbulent airflow can make it run like shit (i know this from experince lol!) so this should def help to smooth it out.

it to has been blazing here where i live and i cant even go out and sit on my ruck without soaking it in sweat lol. sucks. evenafter 10pm its so humid but i cna ride then lol. please get back to us ASAP about how this works!

i like how you painted your carb hat and bowl looks good. :banger:

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Space Docker
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 Post subject: Re: carb mod
PostPosted: Sat Jul 23, 2011 2:47 pm 
Quote:
i like how you painted your carb hat and bowl looks good.


Thanks, man! :highfive: Seems like I'm always on a budget, so I try to think of DIY mods to give my ruck some personality.

Put the carb on earlier today while it was (relatively) cool. Started on the first try! :banger: I let it warm up for a few minutes, then adjusted the A/F screw. It's idling better than ever, so that's a good sign. 8) Came in, took a shower, and was ready for a test run (it's only 97 today, a real cool front :lol: ). Halfway thru my shower, the thunder started, and now it's raining. :cry:

I'm gonna try my best to get out sometime today. I put the same size jets in this carb as are in the other one, so it should be a fair comparison. All I need now is some cooperation from mother nature (she can be such a bitch sometimes).

BTW, I also ported and polished the intake manifold. I'll give a report first chance I get. :banger2:

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Space Docker
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 Post subject: Re: carb mod
PostPosted: Sat Jul 23, 2011 4:39 pm 
Okay, the rain fizzled out, it did drop the temp 10 degrees, 87 feels like A/C. :lol:

Rode for about an hour. :kamiscoot Was dealing with a pretty strong, gusty wind, which always makes it harder to judge performance. Best I can tell, I gained a little top end, maybe 1-2mph, but where I can really feel it is from launch up to about 30-35mph. I have a "test road" with landmarks I use to check my speed, and where I used to be at 38mph, I was at 41 today. :highfive:
It also seems to hold it's speed better on hills and against the wind. Idles smoother too.

All in all, I'd say this is definitely a worthwhile mod. :banger: I do a lot of riding in city traffic, so the improvement in takeoff and midrange alone were worth it to me. If anyone else tries this, let me know if you get similar results.

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 Post subject: Re: carb mod
PostPosted: Sat Jul 23, 2011 5:59 pm 
:banger: :banger: :banger: :banger: :banger:

yea man im all about DIY mods! this won is def a good one. i knew knew the takeoff would be better because less restriction and that would explain why top end is better. i will for sure be doing this! :highfive:

very good report man and your work on the carb looks very smooth and clean. what did you use to grind it off? (dremel im assuming)

also would love some pics on the intake mani. was thinking of taking mine off and doing something with it also.

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Space Docker
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 Post subject: Re: carb mod
PostPosted: Sat Jul 23, 2011 8:33 pm 
Thanks, man, I love it when something actually works out the way I think it should. :D And yeah, I did use a dremel. I started off with a grinding wheel, but the large sanding drum worked better and was easier to control. I got it as smooth as I could with the Dremel, then used progressively finer grit sandpaper, and polished it off with some stainless steel wool.

I should have took pics of the manifold but didn't think of it. No way I'm taking it back off now! :wink: I basically just did the same thing to it, ground down the inner surface on the end the carb mounts to.

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 Post subject: Re: carb mod
PostPosted: Sun Jul 24, 2011 6:07 am 
awsome sounds pretty straightforward! if you come up with any other sweet mods like this pleae let us know! :banger:

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 Post subject: Re: carb mod
PostPosted: Sun Jul 24, 2011 8:27 am 
Me likey... I also like the black cap and float bowl :banger:

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 Post subject: Re: carb mod
PostPosted: Sun Jul 24, 2011 10:42 am 
:highfive: I like where this is going. And the Black is awsome

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Space Docker
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 Post subject: Re: carb mod
PostPosted: Sun Jul 24, 2011 6:27 pm 
ruckus09 wrote:
if you come up with any other sweet mods like this please let us know! :banger:


Well, for what it's worth, since I was on an airflow kick, I did basically the same thing to the exhaust header inlet. :banana_det_down: Looked like it could be a bottleneck, so I ground off the little bit of pipe that stuck out, down level with the mounting flange, then used a step drill to take off the lip and rough out the shape. Smoothed it out with a round file and sandpaper, made it into sort of a funnel shape. (shoulda took pics)

Hard to say if it helped or not, but I figure it couldn't hurt :meh:

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Dirty Sanchez
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 Post subject: Re: carb mod
PostPosted: Mon Jul 25, 2011 1:05 pm 
Got a before pic on the carb?

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 Post subject: Re: carb mod
PostPosted: Mon Jul 25, 2011 1:13 pm 
He did alot of shaping look at the knife edge around the carb and the air hole deal that controlls fuel delivery. You could not do anymore porting than he did. I would like to see a mirror finish on that bad boy, bust out the polishing compound :banger:

Have you ever tried to do a head? I know there are big gains to be found in porting the head and shaving down the valve guids that block almost half of the intake and ex runner. I have an extra motor and want to try some head work but i have never taken apart a GET head yet, they cant be too complicated though :meh:

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Sith Slayer
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 Post subject: Re: carb mod
PostPosted: Mon Jul 25, 2011 1:34 pm 
viewtopic.php?f=13&t=58894

GET to it.

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 Post subject: Re: carb mod
PostPosted: Mon Jul 25, 2011 1:45 pm 
Thats the first thing i found/saved when i bought my ruckus :banger:

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