- Hey guys this is Justin with Rocky Mountain ATV MC,
and I'm gonna show you how to keep your two stroke
exhaust from leaking and making a mess.
All right if you ride a two stroke,
you've probably noticed some black nasty oil
leak out of your pipe, either where the pipe
meets the cylinder or where the silencer meets the pipe.
If you've never experienced that, you probably
will at some point.
Now that oil is simply just unburned pre mix,
it's totally normal, if your bike's running rich,
you're gonna see a lot more of it.
But it's totally normal
and most often you're gonna see it
where the pipe meets the cylinder.
And it just makes a nasty mess when it starts
to leak.
The reason why it starts to leak is because
you have O rings that sit between the cylinder
and the pipe, and as the engine vibrates
the pipe vibrates, those O rings wear out,
and the oil starts to leak.
All right, so before I change out the O rings
on this bike, I wanna give you a few tips.
Now, whether you're changing out the O rings
on an old pipe or you're putting on a brand new pipe,
these tips are gonna help you get the most life
out of your new O rings.
Now the first tip is to check your pipe mounts.
This bike has two mounts.
One up here, one down below.
And it's really important to check those
because they do wear out over time.
A lot of times the pipe gets a little tweaked
and you can actually break those mounts.
And if those mounts are wore out, missing or broken,
the pipe's going to move a lot more,
vibrate a lot more, and those O rings
are not going to last very long.
So always make sure your pipe mounts are in good shape.
All right, my second tip, just like with the pipe mounts,
check your pipe springs, if your pipe springs are wore out,
stretched out, broken, they're not going to hold
the pipe to the cylinder very well,
and again those O rings aren't going to last very long.
All right and my third tip,
may seem a little bit hokey to some people
but it works really well and it makes a huge difference,
and that's the use of silicone.
So I'll actually use some high temperature silicone,
put it around the O rings, and that
silicone not only helps seal the pipe on
a little bit better but it also adds a layer of protection
against vibration that wear out O rings.
So it makes a big difference and I also
use a little bit of silicone between the silencer
and the pipe to prevent any leakage there.
Now to show you how to do that
I'm gonna be installing a raven O ring and spring kit.
I really like this kit because the O rings are
made of viton rubber, which is a really durable
heat resistant rubber so these work really well.
And the raven springs are really heavy duty,
and they feature a swivel head on one end
which makes them really easy to align and install.
So let me show you how to get these on.
All right, the first thing I'm gonna do is pull off
the side plate so I have access to the silencer.
Then I can go ahead and remove the silencer.
Now I can go ahead and remove the pipe mounts.
Now I'm ready to remove the springs.
I'm gonna be using a tusks spring puller.
These things are inexpensive and they make
pulling springs a lot easier.
If you're gonna try to do with a screwdriver
or pliers, you're gonna end up with bloody knuckles.
All right, with springs removed I can pull this pipe.
Now it's always a good idea to clean the cylinder before
you put the pipe on, especially if your pipe was leaking.
So I'm just gonna spray a little contact cleaner in there.
And kinda wipe it off with the rag.
All right so I'm gonna be putting a different pipe
on this bike, so I'm gonna make sure it's real clean.
If you're putting your old pipe on,
you wanna make sure to pull those old O rings out
and then we can ahead and put the new O rings in.
So I'm just gonna slide them into the groove here,
so once those are seated in their grooves like so,
I'm gonna go ahead and put a little silicone on.
Now you don't wanna go crazy with the silicone,
obviously you don't want it obstructing the
pipe, but I'm just gonna get a little on my fingers,
rub it around the O rings, and the nice thing
about this permatex, high temp silicone
is it comes off really easy.
So when you pull your pipe off again,
you gotta clean everything up,
but the silicone comes off fairly easy.
With a little bit of silicone in there
I'm ready to put the pipe back on the cylinder.
Once it's in place, I can attach the mounts.
Now one thing I wanna point out is I'm gonna
loosely attach these mounts at first.
Once I get everything in place and the springs
in place, silencer in place, I can tighten
everything up.
Now I can go ahead and pull these springs into place.
Okay, with the mount and springs in place
we can put the silencer on.
Most two strokes are gonna have a rubber seal
that seal the silencer and pipe together.
But they still leak, so I like to use a little bit
of silicone.
So I'm going to slide the rubber boot back
out of the way and then I'm going to
apply silicone to the back of the pipe
and then I can slide the silencer on to the pipe
and then I'll pull the rubber boot
back over the joint.
With all the bolts in place loosely,
I'm going to tighten all the mounts up,
starting from the front and work my way back.
And finally I'll put the sideplate back on.
All right guys, so there you have it,
hopefully some of these tips help you out.
And help prevent making a black oily mess
on your two stroke.
Be sure and subscribe to our youtube channel
for more how to videos and product spotlights
and check out our website, RockyMountainATVMC.com
for all your parts and accessory needs,
including the O rings, springs and tools I used
in this video.
Thanks for watching.