Pipe testing

6 replies to this topic
  • Guest_Guest_*

Posted June 07, 2000 - 07:59 AM


Don't you guys think that Dirt Bike/Rider etc, should do a 400/26cc pipe test which includes the sound & power rating, especially as buying a pipe these days seems to be a gamble (never as quiet as claimed). All us enduro, trail & dualsport riders get the short end of the stick when trying to bolt on a bit more POWER...

  • Dan_Lorenze

Posted June 07, 2000 - 08:54 AM


Ben, You are right on the money! That pipe test didnt offer me any information at all, if you look at the dyno results none of them are exceptional, Yes I do understand that track results are different. At least they could have posted DB's on these pipes. In order for me to spends hundreds on a new pipe I need to be convinced that it's worth it, so far im not convinced!! It seems as though Yamaha has produced a nice stock unit not your typical 10lbs piece of metal. Dan

  • Heywood

Posted June 07, 2000 - 04:08 PM


Right On Ben / Dan! What is up with that? Why couldn't they include a comment on the noise level. I know the 426 is a motocrosser for closed course competition only .... yada, yada, yada,..... but I also know there are a few of us out here that consider noise levels when looking at pipes.

[This message has been edited by Heywood (edited 06-07-2000).]

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  • James_Dean

Posted June 07, 2000 - 05:23 PM


Yes Ben Yes, they missed our big concern about any pipe. Somebody needs to give a good comparison of sound and power. Whoever can make a good balance will win my money.
James Dean

  • brurag

Posted June 07, 2000 - 08:09 PM


I road a poker-run last Saturday. For water-cooled 4-stroke they had a maximum db reading of 98. I run a Powercore IV SA with the Hi-Flo Head-pipe and the db reading on my 2000 WR400f was between 100 - 102 db's. They let me ride anyway!

  • Clive_in_York

Posted June 10, 2000 - 12:03 AM


I have a 2000 WR.

I'm lucky enough to have a track at home to ride. It's quite near the village so noise IS a consideration. The stock Euro silencer is also a big consideration! DOMA, FMF, WB silencers are anything but (silencers) and for trail riding they're irresponsible.

For a silencer that fits well, looks good, performs very well and sounds acceptable give Edmondson Racing a call. I think their pipe is better priced than some others too. Incidentally, I run the air box lid on, snorkel out and the bike can holeshot in Expert class MX races so no prob with power.

  • Matt_Porritt

Posted June 10, 2000 - 03:53 AM


I don't wan to sound irresponsable of anything but we have no db. testing over here in New Zealand and in my mind a loud pipe is a safe pipe.
It lets people know you arecoming.. but there is such thing as a obnoixious sound level.
I'm just dissapointed that recreational riding has come to a point where you have to be quiet to the surrounding trees..
Show me a test in which trees are damaged by sound/noise.

Saying all this my W/Bros bike with 10 disks IS quieter than the stock YZ400 pipe..

**Ride it like you Stole it!**
Matt Porritt
99 YZ400F
Rubber Chicken Racing


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