Planet Minis

stevec · 11-03-2009, 09:47 PM

There's a relatively known brand of China pit bikes. (Not a PM advertiser). On the new 70cc stocker model, there's an attachment to the exhaust. Is it for emissions?

trackstar · 11-03-2009, 10:01 PM

I think it's where you plug in the trailer brakes, they just routed wire through the exhaust for that "clean" look.

stevec · 11-03-2009, 10:12 PM

LOL. You guys are a RIOT.

nielspbr · 11-04-2009, 12:30 AM

Secundiary air inlet, to bring down emissions a little.

CYCOROB · 11-04-2009, 01:27 PM

Quote:

Originally Posted by nielspbr

Secundiary air inlet, to bring down emissions a little.

ding ding ding , we have a winner .

mexicanyella · 11-04-2009, 01:30 PM

Damn, I been usin mine as a grab handle for when's I get stuck in the pig field. Ouch.

nelson28 · 11-04-2009, 01:37 PM

extra grab bar for big tricks?

monaghan · 11-04-2009, 01:41 PM

its for extra horse power

stevec · 11-04-2009, 05:30 PM

I think it's like an EGR valve in old cars.

Exhaust gas recirculation - Wikipedia, the free encyclopedia

They're modding our Minis into Dad's Oldsmobile!

Al Gore, I hate you.

mexicanyella · 11-04-2009, 08:14 PM

EGR feeds a metered amount of exhaust into the intake stream, to lower combustion temps, which in turn reduces oxides of nitrogen in the exhaust. It's hard to see whether that doodad on the pipe connects to the intake or not. I'm guessing it's more a simplified air-injection deal, as mentioned above, to induce a bit more combustion in the exhaust near the port, where it's still hot enough. Actually I'd think the one end of the thing would be even closer to the port; air injection setups on a lot of cars had air tubes whose tips almost brushed the exhaust valve stems they were so far into the exhaust ports. My old Jeep 6 was like that.

Imagine jetting a dirt bike to work well with EGR. Yechhh. Day may come, though...we have catalytic converters on some bikes, and EFI...

Steve, what's up with your Z and your SL? Ever find a cover, etc.?

southwickmx338 · 11-04-2009, 08:24 PM

Quote:

Originally Posted by crf88r

thats the canooter valve. It releases the pressure on the muffler bearing so you can matriculate the hiccus.

hahahahaaahahahah

southwickmx338 · 11-04-2009, 08:28 PM

AHH so thats where the purple powerband is located!? haha. But in all seriousness, It is to lower emissions and maybe reduce noise a little

weekendwarrior · 11-04-2009, 08:38 PM

its the "tiny turbo" it uses all of your exhaust fumes and turns it into 50 pounds of boost

stevec · 11-04-2009, 08:55 PM

Quote:

Originally Posted by mexicanyella

EGR feeds a metered amount of exhaust into the intake stream, to lower combustion temps, which in turn reduces oxides of nitrogen in the exhaust. It's hard to see whether that doodad on the pipe connects to the intake or not. I'm guessing it's more a simplified air-injection deal, as mentioned above, to induce a bit more combustion in the exhaust near the port, where it's still hot enough. Actually I'd think the one end of the thing would be even closer to the port; air injection setups on a lot of cars had air tubes whose tips almost brushed the exhaust valve stems they were so far into the exhaust ports. My old Jeep 6 was like that.

Imagine jetting a dirt bike to work well with EGR. Yechhh. Day may come, though...we have catalytic converters on some bikes, and EFI...

Steve, what's up with your Z and your SL? Ever find a cover, etc.?

I see, so that's air injection.
http://en.wikipedia.org/wiki/Automob...#Air_injection

I got so frustrated with that Z and SL, I sold them both. Vintage stuff are great when nice and shiny and working fine. They're a nightmare when every part needs replacing. Lately, I find myself looking at CRF and even China stuff.

11-03-2009, 09:47 PM	#1 (permalink)
stevec 2nd Gear Member Join Date: Sep 2007 Posts: 425 My Mood:	What Is This Exhaust Thing? There's a relatively known brand of China pit bikes. (Not a PM advertiser). On the new 70cc stocker model, there's an attachment to the exhaust. Is it for emissions? Attached Thumbnails

11-03-2009, 10:01 PM	#2 (permalink)
trackstar 2nd Gear Member Join Date: Jun 2009 Location: Roy Utah Posts: 372 My Mood:	Re: What Is This Exhaust Thing? I think it's where you plug in the trailer brakes, they just routed wire through the exhaust for that "clean" look.

11-03-2009, 10:12 PM	#3 (permalink)
stevec 2nd Gear Member Join Date: Sep 2007 Posts: 425 My Mood:	Re: What Is This Exhaust Thing? LOL. You guys are a RIOT.

11-04-2009, 12:30 AM	#4 (permalink)
nielspbr Euro Seagull Join Date: Feb 2008 Location: Netherlands Posts: 464 My Mood:	Re: What Is This Exhaust Thing? Secundiary air inlet, to bring down emissions a little.

11-04-2009, 01:30 PM	#6 (permalink)
mexicanyella El rey de los puntos Join Date: Aug 2008 Location: Troy, MO Posts: 984	Re: What Is This Exhaust Thing? Damn, I been usin mine as a grab handle for when's I get stuck in the pig field. Ouch.

11-04-2009, 01:37 PM	#7 (permalink)
nelson28 2nd Gear Member Join Date: Dec 2008 Location: mount pleasant pa Posts: 642 My Mood:	Re: What Is This Exhaust Thing? extra grab bar for big tricks?

11-04-2009, 01:41 PM	#8 (permalink)
monaghan 2nd Gear Member Join Date: Dec 2008 Location: Toronto, ON Posts: 967 My Mood:	Re: What Is This Exhaust Thing? its for extra horse power

11-04-2009, 05:30 PM	#9 (permalink)
stevec 2nd Gear Member Join Date: Sep 2007 Posts: 425 My Mood:	Re: What Is This Exhaust Thing? I think it's like an EGR valve in old cars. Exhaust gas recirculation - Wikipedia, the free encyclopedia They're modding our Minis into Dad's Oldsmobile! Al Gore, I hate you.

11-04-2009, 08:14 PM	#10 (permalink)
mexicanyella El rey de los puntos Join Date: Aug 2008 Location: Troy, MO Posts: 984	Re: What Is This Exhaust Thing? EGR feeds a metered amount of exhaust into the intake stream, to lower combustion temps, which in turn reduces oxides of nitrogen in the exhaust. It's hard to see whether that doodad on the pipe connects to the intake or not. I'm guessing it's more a simplified air-injection deal, as mentioned above, to induce a bit more combustion in the exhaust near the port, where it's still hot enough. Actually I'd think the one end of the thing would be even closer to the port; air injection setups on a lot of cars had air tubes whose tips almost brushed the exhaust valve stems they were so far into the exhaust ports. My old Jeep 6 was like that. Imagine jetting a dirt bike to work well with EGR. Yechhh. Day may come, though...we have catalytic converters on some bikes, and EFI... Steve, what's up with your Z and your SL? Ever find a cover, etc.? Last edited by mexicanyella; 11-04-2009 at 08:17 PM.

11-04-2009, 08:28 PM	#12 (permalink)
southwickmx338 1st Gear Member Join Date: Jan 2009 Location: Southwick,Massachusetts Posts: 209 My Mood:	Re: What Is This Exhaust Thing? AHH so thats where the purple powerband is located!? haha. But in all seriousness, It is to lower emissions and maybe reduce noise a little

11-04-2009, 08:38 PM	#13 (permalink)
weekendwarrior PM Newbie Join Date: Jun 2009 Location: Welland Ontario Posts: 55 My Mood:	Re: What Is This Exhaust Thing? its the "tiny turbo" it uses all of your exhaust fumes and turns it into 50 pounds of boost

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