STIC metering unit

bowser
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185
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12/23/2013
Location
AU
Anyone else using one?

Have been using one in my 18 300XC for a little while now and it just keeps getting better. I was running the recommended jetting 50/182 and played around with it a little bit but didn't fully understand the concept of what the STIC does. I decided to throw the Mikuni back on which has been modified and the difference was larger than I imagined. I found with the STIC it actually made too much power in tighter woods riding and dropped back to yellow PV spring from the red.

If you are wondering what they are like or if they are worth the expense, then YES is the answer. yes they are expensive but it honestly has made way more power and a better bike to ride than any after market accessory i have bolted to my bike.
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Whymee
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566
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12/17/2009
Location
WV US
5/22/2019 1:16pm
I have one to try on my 18 TC250.

Suppose to be the bees knees...
CSAR FE
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641
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5/30/2017
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Tucson, AZ US
5/23/2019 5:51am
Derek at HP Race Development has a porting package what works really well with the STIC, if you want to keep going with the motor. An RK Tek Head, Derek’s porting, and the STIC in a taper-bored carb made my 300 a force to be reckoned with.
40
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263
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12/26/2015
Location
WY US
5/24/2019 8:47am
Which tubes are you guys using- 0.114" or 0.115"?

The Shop

Whymee
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566
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12/17/2009
Location
WV US
5/26/2019 6:44am
I have the STIC block in my hand as I type. Never installed. Purchased from Harris winter of '17.

School me in the size of the tubes or orifice. Is one better than the other? Advantages or disadvantages?

I did not know "sizes" were / are available?
BR8ES
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1914
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6/3/2018
Location
Bennett, CO US
5/26/2019 7:03am Edited Date/Time 5/26/2019 7:03am
what do you have now? One was in favour at that that time, may be different now. I have had both the .114 and .115... .114 seems to be what is in vogue at this point.
bowser
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185
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12/23/2013
Location
AU
5/27/2019 12:52pm
it should have .114 or .115 engraved into it
Whymee
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566
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12/17/2009
Location
WV US
5/27/2019 3:54pm
I just put my STIC under a magnifying glass.

Neither of those numbers are present.
BR8ES
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1914
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6/3/2018
Location
Bennett, CO US
5/27/2019 4:01pm
contact Derek Harris, he should be able to tell you,
40
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263
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12/26/2015
Location
WY US
5/27/2019 6:20pm Edited Date/Time 5/27/2019 6:40pm
The reason why I'm asking is that there are jetting differences between the 0.114" and 0.115" tubes when used in the same carb. George (STIC) said the tubes were marked with the size, but neither our 114 or 115 tubes have any size references stamped or engraved on them. The 0.001" difference (one thousandth) seems inconsequential, but that was not our experience when jetting them.
Regarding the design differences between the two tubes, George explained that he designed the 0.114" in an effort to improve off idle and roll on acceleration over the 0.115. Derek suggested a hood mod to us on our early release 0.115 tube which made a big big difference in throttle response on our case reed CR250 and was later incorporated into the 0.115 design by George (STIC). The 114 goes one step further. YMMV depending on your particular engine, carb and setup.
15tc150
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406
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4/21/2019
Location
CA
5/28/2019 10:17am
YESSSSSSS!!!! FINALLY, Iv been wanting to hear what people have to say about these things, they intrigue me, the whole premise behind the way they work is awesome, and the ability to adjust your metering tube as well has me very curious.
It's nice to hear a first hand experience and the results that you got with the metering block. It's always good to know what your getting into before you buy it, cuz for a tiny piece of a carb, it does cost quite a bit of money, pretty much covers the cost of buying an entirely separate carb. So just to be sure and that it's not just a bunch of hoakey tricks and advertising, is quite assuring when it comes time to order.
if anyone's got detailed pics, please help us out, so we can see a few different angles of it. The whole idea of taking the air/fuel adjustment and turning it into a loop that can drastically Alter mainjet pickup and low rpm, and effectively bridge the gap between the pilot and main jet loops, is awesome, super cool idea. I want one of these so bad, and matched up to a dicks intellijet, would make for one formidable pwk38
5/28/2019 11:22am
What would the STIC do for a 1989 CR125 with a 38mm PWK Airstryker? Would it only increase power at the top or would it help the low-mid curve as well?
bowser
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185
Joined
12/23/2013
Location
AU
5/28/2019 11:49am
What would the STIC do for a 1989 CR125 with a 38mm PWK Airstryker? Would it only increase power at the top or would it help...
What would the STIC do for a 1989 CR125 with a 38mm PWK Airstryker? Would it only increase power at the top or would it help the low-mid curve as well?
The STIC vastly improves low end in my experience, makes the bike run super clean and strong, but smooth strong. As smooth and linear in not better than my TPI did but a whole heap more power. Bloody things is warp speed when revved out now. Would make a 125 fun
1
15tc150
Posts
406
Joined
4/21/2019
Location
CA
5/28/2019 12:11pm
I want one for my tc144, everything else is getting pretty dialed, but I'd love to work with one of the stic blocks, to see just what it is capable of, if it yeilds results like what people are saying, I am eager to try one
Whymee
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566
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12/17/2009
Location
WV US
5/28/2019 4:01pm
I have a 15.

Emailed Derek on updates/recommendations...

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