Breaking in the CR250!


welcome back to the channel guys so with
the 250 all wrapped up and all the little bugs worked out it is time to
break it in so I’m going to set up the suspension first set the sag and then
break in the engine the engine is completely fresh from top to bottom and
so we’re gonna need to run it through some heat cycles and I’m gonna walk you
guys through that and also I do have a couple little things to bolt on the bike
as well so let’s get started now the very first thing I’ll check when getting
a bike ready to ride is the tire pressure so I run 12 in the rear 14 up
front and I’m using about the most basic tire gauge here now on the suspension I
haven’t done any spring or about loving changes yet so it’s completely stock
internally but I am going to set all the clickers to the standard position so
when the forks up top is the compression stock is 15 clicks out from all the way
in and the rebound is down here on the bottom and that is going to be 15 clicks
out as well so I’m going all the way in on the clicker until it stops right
there and 50 now then gonna do the same on the other side then we’ve got the
rebound on the bottom for the shock we have three different adjustments here we
have high and low speed compression so high speed is gonna be the big nut low
speed is going to be the clicker and then down here is the rebound right
there so we’re gonna set the high speed compression at two turns out from all
the way and low speed compression is gonna be eight clicks out and four
rebound that is gonna be set at six clicks out so we’re all the way in we’re
going to go to full turns out right about there is two kind of a
bummer this hole in the side plate isn’t quite
centered on the shock that’s one thing I don’t like about this restyle kit and
then for the low-speed dampening this is gonna be eight klicks out from all the
way in now I’m going to take a quick minute and explain you guys the very
basics of compression and rebound when you’re riding the bike so compression on
the fork or shock is how soft or hard the shock compresses or for compresses
or shortens and then rebound is how fast it rebounds or lengthens for the shock I
explained how we have a high speed and low speed compression so that relates to
the speed of the shock or how fast the shock shaft is actually traveling not
the speed of the motorcycle so an example of an high-speed incident would
be a braking bump or really hard landing the shock is gonna compress quickly and
then an example of a low-speed compression would be going off a smooth
jump face or say going through like a roller section and then if you’re going
to be making adjustments only do one or two clicks at a time and only make
changes to one component at a time so don’t make changes to your Forks and
your shock at the same time just keep it really simple and while we’re on the
subject of suspension I do need to set the SAG on this shock that’s very
crucial to having a good balance bike and I’ve got a new tool to try out for
setting the SAG this is a sag checker from DRC available at Rocky Mountain so
I’m excited to test this thing out so basically how this works is you have
this piece of slides in the axial pop it up onto the swing arm tighten down that
screw to lock it onto the swing arm now we’re stuck on us we aren’t pretty good
and this piece comes all the way up to the fender so you’re gonna want to go
directly straight up to the fender you want that to be vertical and then this
piece just clamps right on to the fender now before I set the sag I’m gonna
briefly explain what exactly the sag is so sag is how much the rear end
compresses when your weight is on the bike and that’s very important for
having a well handling bike for example if you have too much sag your bike is
going to be choppered out like the rear ends gonna be low and the bike is not
going to turn very well and if you have not enough sag the rear ends gonna be
kind of high kind of like a stinkbug and it’s gonna be really unstable on high
speed sections now to start off we’re gonna take the marker bring it all the
way down to the bottom of the tool you got to make a hundred percent sure that
the wheels off the ground when you do that then we’re gonna pull the bike off
the stand throw on some boots a helmet basically you want all of the weight on
the bike as if you’re going riding you also want to make sure the bike is
topped off with fluids and then we’re ready to check the sag man it’s been a
long long time since I’ve worn boots kind of forget how stiff they are now
hopefully from here on out this will be a pretty regular occurrence buckling up
some boots so I’m gonna pull the bike off the stand nice and easy
traffic Chuck too much I’m gonna roll it over to the cabinet I wear something
that leaned up against and then sit on the bike in the neutral
position and try not to rock it too much the right about there
pretty settled in get off the bike slowly and that’s it now the distance
from the marker to the tool is gonna be the amount of sag we have and the number
we’re looking for on this bike is gonna be a hundred and three millimeters and
go ahead and bust out the micrometer z’ for this so we are at a hundred and
sixteen millimeters what is that like 13 millimeters too much yeah looks like I’m
a little too fat for this bike now to tighten up the SAG I’ll need to tighten
down the shock spring a little bit this plastic kit makes a little bit harder to
get to the spring I don’t know if you guys can see this in here but the top
lock nut on the spring is gonna have to be loose and then we can tighten down
that spring a little bit so to tighten the spring I’m gonna spin it clockwise
so I’m gonna keep checking the SAG and adjust in the spring until I have a
hundred three millimeters on the SAG checker after a few adjustments got the sag down
to 103 millimeters right where I want it so and now it’s time to tighten up that
lock nut and we can call it good actually there’s one more measurement
I’m gonna do here and that is the static sag so the static stag is how much the
bike compresses or sags under its own weight so I can check the static sag
with this tool as well I’m gonna push the marker all the way down pull the
bike off the stand and let it compress under its own weight so after I recorded
this I realize there’s a better way to go about it then I showed in the video
you’re gonna want to pull the bike off the stand push the back of the bike down
and then let it slowly return this will eliminate all this diction in the
suspension and then once the bike has settled push that marker on the side
checker down to the bottom put the bike back on the stand and then measure it as
shown in the video now the number we’re looking for here is 30 to 40 millimeters
and this number will tell us if spring on a spike is too light or too stiff for
my weight we are at 35 millimeters so that’s within the range it’s a little on
the higher end now if the static sag was more than 40
millimeters that would indicate the spring on this bike is too stiff for my
weight and I would need to go to a softer spring and vice versa if the
static side was less than 30 millimeters the spring would be too soft now my
thoughts on the DRC sag checker tool works pretty good for setting the sag
yourself I would definitely use it again super easy to use I’ll drop a link down
below to where you can get them now for you guys that don’t have the tool or you
want to set your sag manually I do have a free article available that I wrote up
for you guys so I will drop that down below as well now let’s bring this
beauty outside and start breaking in the engine this is where it gets fun so I’m
gonna break her in using a series of heat cycles now I’ve already started the
bike a couple times but I’m gonna act like I’m going from the very GetGo just
to show you guys the entire process for the first heat cycle I’m gonna fire it
up and run it slightly above idle kind of revving it up and down a little bit
until the coolant temperature starts to go up slightly so luckily I’ve got
this coolant temperature gage I’m gonna watch that closely until it starts to
creep up and then I’ll shut the bike off I saw that gage moved just a little bit
so now I’m gonna let the engine cool for about five to ten minutes and then run a
second heat cycle for the second one I’m gonna bring that temp up a bit more and
then let the engine cool for another five to ten minutes and then we’re ready
for the third cycle I was able to get the temp a little over
a hundred degrees this time now I’m gonna let it cool for about 10 minutes
now if you don’t have a temp gauge on your radiator cap you can always use an
infrared heat gun let’s go ahead and check the cylinder head we are right
around 100 so it looks like that gauge works pretty good so I’m gonna let it
cool down to about 70 or 80 and then run the third heat cycle I love playing with
this thing it’s fun to see what temps are at cases at 70 degrees 77 see what
the pipe is that put the heck I think those must cool down pretty quick
forty-seven am I reading this right see what this side of the engine is 67 what
about the fuel yeah I guess it is around 55 60 degrees out here now what about
the silencer 50 yeah this thing cools down pretty quick now one thing you can
do while you are waiting for the engine to cool down is go through check some of
the bolts especially on a two-stroke things like to vibrate loose I already
noticed the master cylinder bolts were coming loose up here how to tighten
those up so I went through checked all the plastics seat the engine covers here
so yeah Paes this thing on top of those things as everything starts to break in it’s amazing how well the sing idols and
just how responsive it is yeah those electronic carbs are no joke
dude they fricking run Chris let’s go ahead and check these cylinder
head again 1:30 so normal operating tempest around 200 I’m gonna bring up to
180 and call it good so I was able to get her up to 180 I’m gonna let it cool
down completely check all the fluids retorque the head and then tomorrow
morning I’ll be able to go rip it around and do the final heat cycle before I
take this thing for a burn should probably check the spark plug honestly I
should have checked it after a few of those heat cycles just to make sure but
pretty confident this thing is run good kind of hard to tell for sure we don’t
have a ton of time on this plug you can see a little bit of brown or bronze
coming through on the inside of that plug so I would say we are golden
literally now one thing I did talk about is the fuel mixture I’m running 32 to
one which is what I would typically run but say if you’re running 40 to 1 or
leaner I would use 32 to 1 mixture for the first tank so while the fluids
checked out fine i retorque the head to the factory spec and at this point we
are ready for the fourth heat cycle so we’re gonna go ride the bike around for
about five minutes you can actually ride the bike normally at this point the
engine is pretty well broken in but the only thing you want to stay away from is
lugging it that actually puts more wear and tear on the engine parts than just
riding it formally all right think she’s all warmed up and
ready to rip I’m just gonna punch it around for a few
minutes and I actually need the bed in the brake
shoes as well for the brake pads so to do that
heart stop you got about five time that should be good
I’m also trying to break it myself – I haven’t been on a full-size bike like
June of last year so good solid 15 months or something so far it feels really tight everything
seems good pop on the tip like track and cruise
around a little bit a little really cross trap that’s fun
I’m already getting arm pump though alright I’ll show you guys the big bike
track I have out here it’s all weeded in right now I haven’t ridden it in
probably two years oh crap I can barely see where the chop
is anymore I think
earlier things began as a distraction just
completely grown in Oh hops back in over here my bikes can be full of weeds after this oh my gosh so it goes over the sole
female kind of dips down into this hole here
go back over another single got a right-hander that goes into this pretty fun little
double this jump was a ton of fun and this like is running clean I’m I’m
loving it yeah I can’t either tell her the shock
is anymore this is all just basically left memory
right now all right so this is where I’m gonna whines back toward the front
of the fire we have a huge huge sweeper I think it makes the whole 360-degree
turn here yeah and then we get into another little
double here this one’s fun well any jump is fun isn’t it I can’t see where I’m
going holy crap yeah I would not hit that with all those weeds and we go back into the tabletop so yeah
the track is about I’m gonna say like a mile I’m gonna get a dozer out here
pretty soon and clean it up and I’m going to shorten the track a little bit
just because it’s so I don’t know that I haven’t something a ton of maintenance
or something I have to maintain a little bit but yeah
should be a fun little track I think I’m finally feeling strong enough to hang on
to a full-size bike now so we’ll be back in business pretty soon here I should
actually go do a couple little starts out in the field just so I can kind of
ring it back a little bit I miss doing search it’s so much fun I’m
probably gonna loop out though probably shouldn’t Deeks myself get up in a
second oh my god I just booked out big time not
might have been 30 year alright I feel good
I think this bike might be geared a little too to blow to be doing second
gear starts oh yeah you think it’s wetter than
awesome good little break-in session well boys pretty excited with how this
thing is running out on the track you should probably let it cool down for a
little bit though I was really given it the berries on those starts probably not
the best idea with a completely fresh bike but you know what couldn’t resist
from having a little fun but I wonder what we got the temp up to let’s say
around 150 that’s pretty good not overheated or anything so at this point
I’m going to let it cool down completely do a compression test check the plug
again check all the fluids and then we’re pretty much all broken in so we’re
all cooled down time to do a compression test so we’re gonna be looking for
around 150 to 200 psi and all that depends on how well it’s broken in and
also the gauge itself spark plug still looks pretty good I was barely able to
get that gauge host stuffed up in there didn’t have to pull the tank off luckily
now what we’re gonna do is hold the throttle wide open and push down the
kill switch and see where we end up so we ended up right at 150 and that would
indicate the engine it’s not quite broken in all the way I’m gonna do a
couple more rides come back and test it again and hopefully we see around 175 so
every gauge is gonna read different some of the cheaper gauges might read a
little bit low but as long as you’re within that 150 to 200 range I would say
you’re fine and looking at the spark plug a little bit more it’s not really
showing a ton of color which could indicate a lean condition now the bike
actually runs really good it’s not showing any signs of it being mean it’s
not bogging out not idling high and it does produce a good amount of smoke and
there’s a little bit of spooge coming out down here so I won’t say it’s super
lean but just to be on a safe side I am going to pull the slide out and adjust
the metering rod here on the electron so got the slide out of the carburetor
and this right here is the metering rod and how you adjust it is by turning it
turning it in richens the mixture and turn it out leans it so usually you want
to go let’s say a quarter or half a turn at a time I’m gonna richen it up half a
turn this time just to be safe and then read the plug
see where it’s at and go from there on a side note these stands and works
connection are super nice never really appreciated having a parts tray until
now keeps everything off the ground and prevents you from kicking it around
these things are also super stable really heavy-duty a nice rubber pad on
top I’ll drop a link down below to where you can get them and I’ve got a solid
discount code for you guys as well to save 20% use the code cam 20 now to
adjust the metering rod you physically have to turn it now electron sells a
tool to do that now I don’t have one but in a pinch you can use a towel wrapped
around the rod and a set of pliers the rod is actually made of some pretty hard
steel so you’re not gonna damage it and you want to make sure the rod is fully
extended you don’t want it pushed in like this that’s not gonna do anything
so you’ve got it all the way extended gonna give it a half a turn in just like
that now the flat portion of the rod needs to be facing the intake of the
engine push the rod in twist it around set it back in make sure it’s fully
extended and we’re ready to put the slide back in just went for a quick burn
pull the plug out and I’ll show you what it looks like side by side with a new
plug you can see the inside of the plug on the left definitely has a lot more
color it’s got that tan shade to it so I would say it’s running pretty solid and
you can tell the difference when you’re out riding too definitely feels a little
bit more crispy now as far as breaking the bike in I think we’re all set
I’m gonna do another compression test in a few weeks once I ride the bike a
little bit more and see how that looks I think it’ll jump up a little bit but
yeah pretty pumped how everything is looking now the next thing I’m going to
work on is I am going to trim off this little piece here on the
Shroud stand back yeah I think it looks kind of dorky on there honestly I think
of a flow better this whole piece will actually line up with a side plate and I
really don’t know why they put that on there and another plus to trim that off
is you’ll be able to see the carbon tank underneath a little bit better now to
get this thing smoothed out I ended up using a file and then finished it up
with 320 grit sandpaper probably wasn’t the best idea to use a hotknife on this
thing left a lot of rough edges and I’m gonna do a ton of filing to get it all
smoothed out so on the next route I think I’m gonna use that saw so the saw
actually ended up working out pretty good especially once I torched the blade
cut right through that plastic so yeah pretty excited with how these came out
let’s move that pretty nice now that actually looks pretty good you can see
that carbon poking through right there we’re gonna be digging that and I think
the whole shroud just flows better with the side plate and in my opinion I think
it looks more factory now the only thing I’m worried about is your pants catching
right here on this edge a little bit of a sharp angle could smooth it out a
little better but honestly when you’re riding your legs are more rubbing right
here where the air box is but overall I think it was a success thought I’d give
you guys the heads up on a few new products I’m releasing got a few new
shirt designs this one you can obviously tell pretty stoked on got the logo on
the neck there nice subtle addition but these things are super soft you guys
will love them so got a few other new designs on the website as well at primum
XCOM and I’ve also got these black shock bumpers too when I was building the
shock for this bike couldn’t find anything that wasn’t yellow or brown and
so I pulled some strings and now I’ve got some available for you guys I’ll
show you what they look like on the bike it’s a nice black shock bumper down
there you know that brown or yellow nastiness you know
go grab a stock bumper to show you guys how ugly they are so this is a new OEM
bumper got like a yellow color to it but as soon as they start getting dirty they
turn brown yuck and these black bumpers are actually colored all the way through
I’ve got one here that’s cut in half you can see that color goes all the way
through and it’s not gonna fade not gonna chip off or discolor so these
things are the ticket for a good lookin Chuck so I’ve got black chalk bumpers
for cr125 in 250 so2 207 as well as CRF 250 s and 450 s all the way up to 2020
so pretty cool deal I’ll drop a link down below to the bumpers as well as the
new shirts now the very last thing we’re working on for today is pretty freakin
cool we’ve got a case of titanium hardware from tusk
so we’ve got a few different colors here and sizes these are the kind of factory
color they call it it’s got the rainbow color a couple different sizes there and
the ones in the case they don’t spill them are black and then all these bolts
got some real nice head on them they’re all drilled out for safety wire looking
pretty trick absolutely love the look of this stuff now let’s figure out where
we’re gonna put all this bling and I’ve heard this number before I don’t know if
it’s completely true or not but if you swap out every piece of hardware every
bolt on the bike for titanium you’ll save about 6 or 7 pounds so pretty
impressive got the ignition side done looks pretty
good I’m gonna do all the case bolts as well I’ll have to buy the right sizes
for that but sadly I didn’t have the right size bolts for the clutch cover
and water pump those bolts pretty long so I’ll have to order these specific
bolts for that but overall really dig in how much these bolts spruce up the bike
so that’s gonna be it for this video thank you so much for watching hope you
guys enjoyed it and I will see you all in the next one I’ve got a really
interesting video coming your way so stay tuned

About the author

Comments

  1. That bike is mean bro!! Hope all is good with you and your treatment plan for A.L.L. Cam, I'm currently doing well I would say! 🙏

  2. After such a long time to finally see this project running. Well done bud. You deserve the fruits of your labour. Hope your health is doing better?

  3. Super sick bike!! Maybe think about protecting that clean frame with some plastic against scratches from your boots

  4. I love how well you show the build and walk us through it I’m always learning something new while also being entertained!

  5. Awesome job brother👏, learned alot from you, all the way from Malaysia, nxt up the dirt bike track, can't wait😎👍

  6. Man I wish I lived closer to you! I’d love to ride with you and get to know you! So happy this bike turned out good and you’re recovering 🙌🏻👏🏻

  7. If the hole was centered you couldnt get the wrench on. Guess you could use a socket then. That is one very sexy machine. Its a museum piece actually. The best parts available, if you eliminate one off factory stuff.

  8. Beautiful bike. I've also been watching since day 1. I think u might have mixed up the static sag. If you have too little static sag you need a stiffer spring and vice versa if you have too much static sag you need a softer spring

  9. Dude that thing sounds sooo awesome. Just needs a bit of high temp silicone to seal off that spooge drip on the brake line and maybe 44:1 once its all broken in and that thing is gonna rip

  10. Is that normal for it to smoke that much at idle? I have a problem with my '87 YZ80 that would smoke like that if not worse.

  11. It’s a dirtbike, there’s no need to break the engine in. The parts are quality and your driving style does not put any stress on the parts. Watch how the pros drive, they don’t break the engines in, it’s full throttle from the start.

  12. MAGNIFICENT JOB BROTHER ❤️❤️❤️💪💪💪🇺🇸🇺🇸🇺🇸GOD BLESS YOU AND PROTECT YOU AND YOUR FAMILY AND FRIENDS 🙏MOTOCROSS FOR EVER AND HONDA 💪💪💪

  13. For cutting the plastics you can use a torch and sort of flame polish the rough edge where the cut was after you file it flat. That will help take it back to the molded look on the edge that was cut.

  14. Awesome job Dude! I’m envious! Even though I’m an old dude now. I moto crosses in high school in the 70’s and continued road racing up into the 2000’s. I miss the speed and competition. Great reminiscing, thanks!

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