Lost The Frame Oil Drain Plug.


4 replies to this topic
  • Doug_Caldwell

Posted August 13, 2004 - 07:03 PM

#1

I just wanted to post up a little reminder to check your drain plugs. I normally check and recheck mine, but the one time that you don't. I made it through 5 laps of practice, 2 of my 4 motos at 7 laps each, then 5 laps into my third moto of the day and that was it.

My wife said that from where she was watching, she saw me come around for the triple and there was no smoke. But she said that after the long sweeper where she could see me again, it was smoking like a freight train. I didn't notice anything was wrong at first. She looked at me really weird as I came over the tabletop right by her, but I thought that it was because I whipped it pretty hard over the jump. I went off the next big jump and had to get on the brakes, but they were not responding. A spectator waved me down and I killed the motor.

I had a new drain plug, oil filter and oil delivered. I gave the bike a quick once over, then fired it back up. No noise or smoke. I rode it around pretty hard and it didn't fail me. So I rode it the next day for 4 motos and never any trouble. When I got home, I tore the cams out to see if there was any damage.

The moral of the story is:

Some people are just plain lucky, and it was my turn. :thumbsup:

Let me know if there is anything you can think of that I should check before the next set of motos.

  • wrx_stud56

Posted August 15, 2004 - 10:05 AM

#2

thats kinda funny since that just happend to me ! but my nearest yamaha dealer is like 2 hrs away and i cant just drive there for a new frame oil plug ! so anyone have any idea on what size it is ? id appreciate it !

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted August 15, 2004 - 10:11 AM

#3

I believe it's a 7mm ISO thread, but in order to work properly, it needs the built in washer support face at the bottom of the hex head, and you need a copper washer to go with it.

  • wrx_stud56

Posted August 15, 2004 - 11:45 AM

#4

i think i could get away with using a 7mm iso with just a lock washer from the hardware store can i not ?

copper washer ? why would i need that ?

  • grayracer513

Posted August 15, 2004 - 12:49 PM

#5

Nope,

The bottom of the bolt has to seal oil at the drain hole. Any kind of lock washer would allow oil to run right past it.

The copper washer is used as a high pressure gasket. That is, it is capable of being placed under high torque pressure without squirting out of place. Bolts manufactured as drain plugs have a wider, washer-like face onthe bottom to spread the sealing forces out over the washer better.

Truthfully, you could use a plain bolt with a flat washer until you get the right one, just don't think that it isn't going to leak a little in the meantime.





Related Content

Forums
Photo

YZ450F 03 Sparks driving me crazy by SirAttard


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies
Forums
Photo

The "going back to the other darkside" adventure... by Monk


Dirt Bike   Make / Model Specific   KTM   250/350/450/505 SX-F & XC-F (4-Strokes)
  • Hot  94 replies
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
Motocross

Thinking about Yamaha 250... by Arctic Pride


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies
Forums
Photo

2016 YZ450 by CaptainKnobby


Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 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.