why two pipes? - Page 2

geezer · 07-21-2011, 09:54 PM

yes your right water warrior 2 valves flow more than 1 but no need for two separate exhaust ports. my fzr is a 5 valves and its got one pipe per cylinder so if there was some sort of advantage to this you would think more manufactures would be doing it to.clearing the frame seems to be number 1 in my book, along wiht suzuki might have been experimenting with the concept but couldnt justify the extra cost of all the extra stuff that goes with 2 seprate ports. just a thought
on the TU with its 2 valve head. i wanna say they did this for a torque increase. its true a four valve head will flow better than a 2 valve, but depending on valve lift and some other factors like RPM, more usable torque is probably the end result for the TU. not to mention FI which would add a ton of midrange punch to the mill. i bet you that bike will run circles around this one

alantf · 07-22-2011, 05:17 AM

Just a point to ponder on......... The 125cc version of the gz is identical in every other way, except that it's got only one pipe. But I believe it's only got 2 valves per cylinder. Still, just goes to show that two pipes aren't needed to bypass the frame, as was suggested earlier. :??:

geezer · 07-22-2011, 06:41 PM

true that. hmm so then im thinking it was a suzuki test to see if this combustion head thing was gonna work. i think if failed! :neener: also is the frame the same on the 125? if not then the clearance idea could still be valid. anoother question. is this exact engine in anything else other than the gz?

Water Warrior 2 · 07-23-2011, 12:29 AM

I would think the 250 and 125 engines are used in a variety of Suzuki models around the world. For those of us in North America a 125/250 is considered small but in many third world counties they are the norm.

clonak · 09-21-2011, 06:02 AM

I had a gander at a GN250 the other day, looked very similar, and have heard rumors about it being the same engine. It had the 2 exhausts too. I wondered what the deal was with it as well. on the GN also looks like frame clearance, although, I dont see why it couldnt just come out to one side a little bit ?

clonak · 09-21-2011, 06:16 AM

Just been looking at a mid 80's GN, same design. long experiment if thats all it was...

Gz Rider · 09-21-2011, 09:02 AM

...

07-21-2011, 09:54 PM	#11
geezer Senior Member Join Date: Mar 2011 Location: dahlonega GA Posts: 563	Re: why two pipes? yes your right water warrior 2 valves flow more than 1 but no need for two separate exhaust ports. my fzr is a 5 valves and its got one pipe per cylinder so if there was some sort of advantage to this you would think more manufactures would be doing it to.clearing the frame seems to be number 1 in my book, along wiht suzuki might have been experimenting with the concept but couldnt justify the extra cost of all the extra stuff that goes with 2 seprate ports. just a thought on the TU with its 2 valve head. i wanna say they did this for a torque increase. its true a four valve head will flow better than a 2 valve, but depending on valve lift and some other factors like RPM, more usable torque is probably the end result for the TU. not to mention FI which would add a ton of midrange punch to the mill. i bet you that bike will run circles around this one __________________ 99 gz 250 and a currently dismantled fzr 1000 Login or Register to Remove Ads
	0

07-22-2011, 05:17 AM	#12
alantf Senior Member Join Date: Nov 2008 Location: Tenerife (Spain) Posts: 3,716	Re: why two pipes? Just a point to ponder on......... The 125cc version of the gz is identical in every other way, except that it's got only one pipe. But I believe it's only got 2 valves per cylinder. Still, just goes to show that two pipes aren't needed to bypass the frame, as was suggested earlier. :??: __________________ By birth an Englishman, by the grace of God a Yorkshireman.
	0

07-22-2011, 06:41 PM	#13
geezer Senior Member Join Date: Mar 2011 Location: dahlonega GA Posts: 563	Re: why two pipes? true that. hmm so then im thinking it was a suzuki test to see if this combustion head thing was gonna work. i think if failed! :neener: also is the frame the same on the 125? if not then the clearance idea could still be valid. anoother question. is this exact engine in anything else other than the gz? __________________ 99 gz 250 and a currently dismantled fzr 1000 Login or Register to Remove Ads
	0

07-23-2011, 12:29 AM	#14
Water Warrior 2 Senior Member Join Date: Dec 2006 Location: Squamish B.C Canada Posts: 11,409	Re: why two pipes? I would think the 250 and 125 engines are used in a variety of Suzuki models around the world. For those of us in North America a 125/250 is considered small but in many third world counties they are the norm.
	0

09-21-2011, 06:02 AM	#15
clonak Member Join Date: Aug 2011 Location: Auckland New Zealand Posts: 58	Re: why two pipes? I had a gander at a GN250 the other day, looked very similar, and have heard rumors about it being the same engine. It had the 2 exhausts too. I wondered what the deal was with it as well. on the GN also looks like frame clearance, although, I dont see why it couldnt just come out to one side a little bit ? Login or Register to Remove Ads
	0

09-21-2011, 06:16 AM	#16
clonak Member Join Date: Aug 2011 Location: Auckland New Zealand Posts: 58	Re: why two pipes? Just been looking at a mid 80's GN, same design. long experiment if thats all it was...
	0

09-21-2011, 09:02 AM	#17
Gz Rider Senior Member Join Date: Aug 2011 Posts: 852	Re: why two pipes? ... __________________ *Alert - This person is a douche. Use these comments and advice at your own risk*
	0