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View Full Version : hey quick question about atvs in general



justin1022
08-19-2010, 05:58 PM
hey bassicly all i want to no is what will running a quad without a header do? i no this cant be good for a atv my friend said it will blow orings because of no backpressure but my other friend thinks its allright someone tell me exactly what this will do? thanks!

CRE Performance
08-19-2010, 06:04 PM
Itll run like ***, sound like ****, and eventually burn an exhaust valve.

justin1022
08-19-2010, 06:07 PM
Originally posted by CRE Performance
Itll run like ***, sound like ****, and eventually burn an exhaust valve.

yes but anything else internally that will break ?

CRE Performance
08-19-2010, 06:12 PM
Im sure the possibilities are endless. Try it and see, report back. I could possibly see it ruining a cylinder or piston, but I think the ex valve will warp or burn, making it stop running, before it got to that point.

CJM
08-19-2010, 07:48 PM
Dont, the sucker will spit flames out and sound really, really bad.

06typeS
08-20-2010, 11:48 AM
should burn up the piston and valves pretty quickly

tri5ron
08-20-2010, 01:55 PM
Originally posted by 06typeS
should burn up the pistol and valves pretty quickly Pistol ???
Give it a shot, and report back.

smr
08-20-2010, 01:58 PM
if it's a 2 stroke it want run very long. It will burn up the piston, destroy the cylinger and maybe even the crank.

If it's a 4 stroke then it will burn up a valve and could posibley suck some dirt back into the cylinder.

honda400ex2003
08-20-2010, 03:12 PM
sounds like a good idea to me. I have a new project when i get home :D ill report back later tonight with my hp gains and my rejet specs. steve

buck440
08-20-2010, 07:37 PM
from what i hear you can spray paint the header and where the paint is unburnt is where you can cut it off at. that's what i did with my 07 zx-10r but i got a power comander though. if you had the right mapping, jetting, and a way of knowing if cold air was going in it you could. just for fun i once rode my 400ex 20min with just the header but a couple months later it smoked so bad i had to put a quart of oil in it after ever half hour of riding but it was not set for it though.

250raptor
08-20-2010, 10:15 PM
jeez i hope some of you guys are joking. but like some said it will run like **** sound like **** and screw something up. thats why i dont get on here much anymore, the site is over run with kids on 400ex's always wanting the loudest pipe or wanting to take their muffler or header off. you may just be asking to see what would happen but i have seen many other threads with people wanting to take their muffler off or something stupid. sorry for the rant, just had to get that out.

Tommy Warren
08-20-2010, 11:48 PM
what would you have to gain from pulling the header off anyways? I say go ahead and do it....if the thing blows up and you can't ride anymore it will be a huge gain for the sport :grr:

justin1022
08-26-2010, 10:42 AM
im not saying i want to do it man my freind did it and posted a video on youtube and said nothing bad will happen and i am disagreeing with him but do not no much about mechanics to explain why so he thinks nothing will just because i cant explain it to him i am not the type of guy to take a pipe of to gain db look at my atv i like things nie and clean and done right
http://sphotos.ak.fbcdn.net/hphotos-ak-snc1/hs140.snc1/5976_242624290550_594710550_8457091_803700_n.jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-snc1/hs160.snc1/5976_242624320550_594710550_8457094_1204609_n.jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-snc1/hs160.snc1/5976_242624335550_594710550_8457096_7020366_n.jpg

justin1022
08-26-2010, 10:48 AM
this is his comment

mach1stang310hp
5 days ago @modzlg oh and, think of cars. you can run a car straight pipe or with no header. what happens? NOTHING. so, there for a 4-stroke, which is the same as a car motor. wont have any problems. it's commen sence.

this is mine

modzlg
33 seconds ago @mach1stang310hp cars have EFI so it adjust to the exhaust change its common sence. is dirt bad for your engine? YEA its common sence will taking the header off make it easy for dirt to get into the engine? YEA its common sence will dirt wreak your engine faster then you can blink? YEA its common sence i definently wouldnt higher you as a mechanic just saying

06typeS
08-26-2010, 10:51 AM
Originally posted by tri5ron
Pistol ???
Give it a shot, and report back.

alzheimers kicked in, i just start typing random stuff

HondaRacing83
08-26-2010, 11:17 AM
i hope your joking

buck440
08-26-2010, 03:02 PM
you all realize jacklinks is the undesputed best gas station jerkey available right:confused: