Two Stroke Motocross

Two Stroke Motocross Forum => General Two Stroke Talk => Topic started by: Braap257 on August 08, 2010, 07:22:29 PM

Title: Motor to Pipe Gap??
Post by: Braap257 on August 08, 2010, 07:22:29 PM
There is a small "Slit like" Gap around the top of the pipe where it connects to the motor. Is this normal. Or do I need to fix it?  Just trying to get her ready for the 1st ride! ;D

Its around the top where its hardest to see "Of course" Idk if this is a problem or not. It may be normal but if it isn't im gunna fix it now.


(http://i726.photobucket.com/albums/ww262/Thefertagapher/PipeGap1.jpg)


(http://i726.photobucket.com/albums/ww262/Thefertagapher/PipeGap2.jpg)


Title: Re: Motor to Pipe Gap??
Post by: Coop on August 08, 2010, 07:48:12 PM
Looks like they have the wrong (weaker) pipe springs on your bike.
Title: Re: Motor to Pipe Gap??
Post by: Braap257 on August 08, 2010, 07:51:03 PM
What? The springs arent strong enough? they seem to be pretty tight to me.
Title: Re: Motor to Pipe Gap??
Post by: Coop on August 08, 2010, 08:00:21 PM
They don't really look like proper exhaust springs too me, they seem really thin.
Title: Re: Motor to Pipe Gap??
Post by: Braap257 on August 08, 2010, 08:03:28 PM
hmmm. What would be a good temporary fix?
Title: Re: Motor to Pipe Gap??
Post by: riffraff on August 08, 2010, 08:10:24 PM
Here's how you make your pipe fit right

http://www.piperepair.com/tips.htm (http://www.piperepair.com/tips.htm)
Title: Re: Motor to Pipe Gap??
Post by: Braap257 on August 08, 2010, 09:25:05 PM
Here's how you make your pipe fit right

http://www.piperepair.com/tips.htm (http://www.piperepair.com/tips.htm)

So i guess i would have to take the pipe off and bend it down?
Title: Re: Motor to Pipe Gap??
Post by: TMKIWI on August 08, 2010, 10:10:15 PM
They are not the proper springs.
Get some from a dealer, they are pretty cheap.
Title: Re: Motor to Pipe Gap??
Post by: evo550 on August 08, 2010, 11:28:28 PM
You need new springs and o rings
part number 5mw14642-00-00 and 90507-20052-00
Looks here
http://www.yamaha-motor.com/sport/parts/home.aspx (http://www.yamaha-motor.com/sport/parts/home.aspx)
just click on proceed to parts catalogue, then use the drop down boxes at the top of the page to find your bike.
Up comes the parts catalogue for your whole bike, you can even order the parts this way.
Title: Re: Motor to Pipe Gap??
Post by: Braap257 on August 09, 2010, 07:24:36 AM
I'm gunna try to pick some up from my local motorcycle shop whenever my gear finally comes in.. ;D
Title: Re: Motor to Pipe Gap??
Post by: maicoman009 on August 09, 2010, 07:31:06 AM
Yeah Brapp I was going to tell ya to take Kiwi's advice..... ;)
Title: Re: Motor to Pipe Gap??
Post by: Coop on August 09, 2010, 07:52:06 AM
Yeah Brapp I was going to tell ya to take Kiwi's advice..... ;)

Geesh I get no respect, no respect I tell ya!
Title: Re: Motor to Pipe Gap??
Post by: eprovenzano on August 09, 2010, 08:05:33 AM
Yes the springs do need replaced, cheap and easy fix.  When you take the springs off, I would also pull the pipe off, clean everything, and add some RTV hi-temp silicone sealer when reinstalling the pipe to ensure a air tight seal. The RTV hi-temp silicone can be purchased at your local auto parts dealer.
Title: Re: Motor to Pipe Gap??
Post by: scotty dog on August 09, 2010, 01:22:52 PM
Yes the springs do need replaced, cheap and easy fix.  When you take the springs off, I would also pull the pipe off, clean everything, and add some RTV hi-temp silicone sealer when reinstalling the pipe to ensure a air tight seal. The RTV hi-temp silicone can be purchased at your local auto parts dealer.
Thats what i was gonna mention, some silicone, seals and springs together with a good clean and she be all good..
Title: Re: Motor to Pipe Gap??
Post by: socalcajun on August 09, 2010, 01:30:01 PM
Everyone's touched it. Quick and cheap maintanence. The springs and gaskets are some of the simpliest you fix'em parts on the bike. You'll get the feel for what your bike needs and how often the longer you ride it.

Now quit nit pickin the damn thing and go ride. :P ;D
Title: Re: Motor to Pipe Gap??
Post by: scotty dog on August 09, 2010, 01:36:17 PM
Everyone's touched it. Quick and cheap maintanence. The springs and gaskets are some of the simpliest you fix'em parts on the bike. You'll get the feel for what your bike needs and how often the longer you ride it.

Now quit nit pickin the damn thing and go ride. :P ;D
Words of wisdom right there.. Take note  ;D ;D
Title: Re: Motor to Pipe Gap??
Post by: TMKIWI on August 09, 2010, 02:07:43 PM
Yeah Brapp I was going to tell ya to take Kiwi's advice..... ;)

Geesh I get no respect, no respect I tell ya!

I trust you coop  :D
Title: Re: Motor to Pipe Gap??
Post by: JohnN on August 09, 2010, 04:44:32 PM
Yes the springs do need replaced, cheap and easy fix.  When you take the springs off, I would also pull the pipe off, clean everything, and add some RTV hi-temp silicone sealer when reinstalling the pipe to ensure a air tight seal. The RTV hi-temp silicone can be purchased at your local auto parts dealer.
Thats what i was gonna mention, some silicone, seals and springs together with a good clean and she be all good..

x3

 ;D
Title: Re: Motor to Pipe Gap??
Post by: Braap257 on August 09, 2010, 07:23:05 PM
haha I'm Gunna! I want to take it out soo bad! My gear should be ready to pick up tomorrow!!
Title: Re: Motor to Pipe Gap??
Post by: eprovenzano on August 10, 2010, 05:30:35 AM
I guess we need to cut him some slack, no gear = no ride...  same rules as in my house...   ;D
Title: Re: Motor to Pipe Gap??
Post by: socalcajun on August 10, 2010, 09:33:09 AM
I guess we need to cut him some slack, no gear = no ride...  same rules as in my house...   ;D

Same here, but ain't peer pressure a beast. ;D
Title: Re: Motor to Pipe Gap??
Post by: scotty dog on August 10, 2010, 12:31:24 PM
I guess we need to cut him some slack, no gear = no ride...  same rules as in my house...   ;D

Oh yeah..............forgot about that.. :-[

Hope ya gear turned up cob i know how hard it is to have to wait..
Title: Re: Motor to Pipe Gap??
Post by: maicoman009 on August 13, 2010, 06:36:34 PM
Yeah Brapp I was going to tell ya to take Kiwi's advice..... ;)

Geesh I get no respect, no respect I tell ya!
I have respect for ya Coop as I do for every 2-stroke fan on this site but you just mentioned to Brapp that they were the wrong springs twice where as the Kiwi said to go get the proper ones from the dealer which I thought that was the most logical advice.
Title: Re: Motor to Pipe Gap??
Post by: Coop on August 13, 2010, 08:52:32 PM
...but you just mentioned to Brapp that they were the wrong springs twice where as the Kiwi said to go get the proper ones from the dealer which I thought that was the most logical advice.

Hmm my bad. I assumed when you tell someone twice they have the wrong springs it's implied they should go get the correct ones... ;D  :P
Title: Re: Motor to Pipe Gap??
Post by: Braap257 on August 15, 2010, 03:13:17 PM
guys, guys, guys. There is room for everyone's opinion lol.

Anyways, Pulled the pipe and silencer today and got them both completely oiless. gunna get the FMF pipe and o-ring kit as i heard its the best. About to go to walmart to get some clamps for the exhaust hose "as obviously i had to cut the old ones off :)" And as somebody mentioned before to get some RTV and I did. Picked some up at the AutoZone a few days ago. So everything is nice and clean and will be sealed perfect  ;D
Title: Re: Motor to Pipe Gap??
Post by: Braap257 on August 15, 2010, 05:56:13 PM
This week is looking to be a good one! On wed my fmf pipe spring and o ring kit will be in along with the spring puller  ;)

And on thurs my new Jersey, Pants, Renthal Bar pads "For the Renthal Handle bars of course :)" My oil plug and some stickers i bought :)


Now for the questions. I figure RTV stuff shouldn't go where the pipe connects to the motor as it may be too hot and with  new springs and an o ring is shouldn't need it right? And i plan on using the RTV to get a solid seal where the pipe connects to to the silencer.
Title: Re: Motor to Pipe Gap??
Post by: TMKIWI on August 15, 2010, 06:03:30 PM
You can buy high temp rtv.
I just use abit of grease on the new o-rings to help it slide on and seal. High temp grease of course.
Title: Re: Motor to Pipe Gap??
Post by: Braap257 on August 15, 2010, 06:16:19 PM
Mkay thanks, Heres a pic of the springs. Is this why my pipes leaking?


(http://i726.photobucket.com/albums/ww262/Thefertagapher/P1000621.jpg)
Title: Re: Motor to Pipe Gap??
Post by: GlennC on August 15, 2010, 06:48:27 PM
Mkay thanks, Heres a pic of the springs. Is this why my pipes leaking?


(http://i726.photobucket.com/albums/ww262/Thefertagapher/P1000621.jpg)

Can I have the one on the left? I think it will fit my old stapler. :D
Title: Re: Motor to Pipe Gap??
Post by: Braap257 on August 15, 2010, 07:34:58 PM
Mkay thanks, Heres a pic of the springs. Is this why my pipes leaking?


(http://i726.photobucket.com/albums/ww262/Thefertagapher/P1000621.jpg)

Can I have the one on the left? I think it will fit my old stapler. :D


haha too funny  ;D
Title: Re: Motor to Pipe Gap??
Post by: Coop on August 15, 2010, 08:43:11 PM
Mkay thanks, Heres a pic of the springs. Is this why my pipes leaking?


No guarantees but that spring on the left is definite NOT an exhaust spring and much too weak. You did the right thing by ordering proper springs.
Title: Re: Motor to Pipe Gap??
Post by: evo550 on August 16, 2010, 05:20:33 AM
Braap,
If the "O" rings are fresh, you shouldn't need and RTV sealant. The o ring won't melt, but they tend to go hard after a while and lose their sealing quality.
The goop that's leaking out of your header pipe isn't caused by poor sealing at the cylinder, it's caused by overly rich jetting.
Put on fresh springs and "o" rings, get your jetting right and your problems will be cured for good.
Title: Re: Motor to Pipe Gap??
Post by: Braap257 on August 16, 2010, 08:49:35 AM
Braap,
If the "O" rings are fresh, you shouldn't need and RTV sealant. The o ring won't melt, but they tend to go hard after a while and lose their sealing quality.
The goop that's leaking out of your header pipe isn't caused by poor sealing at the cylinder, it's caused by overly rich jetting.
Put on fresh springs and "o" rings, get your jetting right and your problems will be cured for good.

Well, When i pulled the pipe off i don't believe any O-rings in were in there. But they will be in there soon enough. And i wasn't gunna use RTV on the around where the pipe connects to the motor. I was gunna use some for where the pipe connects to the silencer. As for the jetting, Yes i know its too rich. But I don't have the time to jet it myself right now. And being as I have never done it before it would probably take forever. I wonder if there was someone in my area who could do it for me?