carb backfire LOUD!



8 replies to this topic
  • sirthumpalot

Posted March 29, 2002 - 01:19 PM

#1

After washing the bike today I was running the engine to get it hot so it would dry. After it got warm I was playing with the throttle and whacking it open (I like the sound..hehe..) and since it was idling and not really hot yet it kicked back through the carb. WOW was that loud! Sounded like a regular backfire but I could hear it and feel it. All of the water on the seat and sides of the air box jumped right off! I haven't looked at my filter yet, I hope it's still in one piece. OK I had nothing important to say, just wanted to babble a bit.. :)

  • RichB

Posted March 29, 2002 - 01:21 PM

#2

Maybe there's a reason yamaha puts a screen in the cage, you think??????

  • Hokie

Posted March 29, 2002 - 01:41 PM

#3

Originally posted by RichB:
Maybe there's a reason yamaha puts a screen in the cage, you think??????


Yeah, it is to restrict the performance right? :)

  • RIDEPATE

Posted March 29, 2002 - 01:45 PM

#4

really,maybe that screen "swirls" the backfire!! lol

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • mcarp

Posted March 29, 2002 - 02:26 PM

#5

YES! THAT'S IT! The screen SWIRLS the BACKFIRE!!! I knew there was a reason this screen exists!!!! :)

Whew, we can all rest comfortably now!

  • thumper4life

Posted March 29, 2002 - 02:40 PM

#6

i cant!!! i still need proof that theres not a tracking device that the EPA/government put on there to spy on our everyday lives and brainwash us to become their working drones :D

cant sleep, government watching me! cant sleep, government watching me! cant sleep, government watching me! cant sleep, government watching me! cant sleep, government watching me! cant sleep, government watching me! cant sleep, government watching me! cant sleep, government watching me! cant sleep, government watching me! cant sleep, government watching me! cant sleep, government watching me! :)

  • RichB

Posted March 29, 2002 - 05:17 PM

#7

I'm getting a good laugh out of some of this stuff guys but the scary thing is I've seen a yamaha street bike burn to the ground almost taking a garage with it from a backfire through the carb (which caught the filter on fire).

I'm telling ya, if you saw that in person you might not be as quick to think there's not a legit reason Yamaha put it in there.

Late.

  • RIDEPATE

Posted March 30, 2002 - 05:11 AM

#8

HEY RICH, dont worry my screens not going anywhere,we were just cracking on another post about removing the screen where the guy said if you removed it it would improve the "swirling effect"to the carb.........ha what a joke!!!!

[ March 30, 2002: Message edited by: RIDEPATE ]

  • Jon_Escombe

Posted March 30, 2002 - 02:14 PM

#9

Last year I tried back-to-back dyno runs using the stock 426 cage & the cage from a 125 (which has no mesh). Made no difference to power..

I did this shortly after seeing a Husky burn to scrap after backfiring through the airbox. This was during a re-start after a crash (presumably flooded), watching the poor guy trying to scoop gravel over his burning bike wasn't a pretty sight :)

Convinced me to keep a screen in there..





Related Content

Forums
Photo

Is it worth it? (Cam and High compression piston) by macgi77


Dirt Bike   Make / Model Specific   Honda   CRF 150/230 F/L
  • Hot  36 replies
Forums
Photo

yz250x vs 450 4t comparisons (preferably desert riding) needed by JakeNorthrupYZ450F


Dirt Bike   Make / Model Specific   Yamaha   Yamaha 2-Stroke
  • 9 replies
Reviews

Yamaha YZ450F 2017 by Chris.GVS


Yamaha YZ450F 2017
  • - - - - -
  • 0 reviews
Forums
Photo

Michigan Motocross Tires by 288yz450


Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply
Forums
Photo

James Stewart back on a YZ450F by YamaLink


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies
 
x

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.