[eviltwin]

i have white smoke coming out of the top of my
engine and i have pinpointed where it is coming
from, but i don't know what to do about it.
It is coming from this hole at the top. it seems
like it is exhaust. after running for a while
it starts to bog down lots.

it looks like
a hose goes there or something. i am unsure
what hose goes there though...i only have drainage
hoses from the bottom of the carbs available.
http://www.everyotherfate.com/running.3gp

It is a honda cl360 1974
any suggestions?

thanks!
-brent

 

[oldschoolorange]

That is your crankcase breather. There should be a hose there. The smoke coming out is due to blow by combustion gases. I am not sure if you can find it but there should be a spec on how much pressure can be built in the crankcase in X amount of seconds. About your bogging, It is probably a jetting issue


Hey someone pas me the wrench........ Ahh screw it where is the torch

 

[oldschoolorange]

A little bit of smoke is normal

Hey someone pas me the wrench........ Ahh screw it where is the torch

 

[kenessex]

Eviltwin,
That fitting originally had a hose that went to the airbox to recirculate the fumes from your crankcase. It is supposed to make some smoke when the engine heats up. You can either run a hose back where it is supposed to go (probably the bottom of the airbox) or to a catch can that is ventilated so it doesn't build up pressure, or just leave the endof the hose open to the atmosphere but routed to behind your rear tire (in case it pukes out some oil) or K&N makes a special filter that goes on the end of the hose.
Your other problem sounds like it is probably carburation. If it bogs down after it warms up I would suspect too rich, so possibly float level, sticking needles or gummed up slides.

Ken

AHRMA 412
Vintage racing - old guys on old bikes

 

[ROSKO]

I have a hose running along the spine and behind the engine to dribble oil onto the pavement in front of my rear tire.

BORN TO LURK, FORCED TO WORK.
www.NYCvinMoto.com
www.VinMoto.org

 

[kenessex]

Rosko,
I like to do that too. That way I feel like I have some horsepower and can spin up the rear tire like a bad boy. It is one of my poser secrets. It is best if you use a really cheap tire like one of the K81 or K70 knockoffs. They are hard as a rock and can really slide around.
Ken

AHRMA 412
Vintage racing - old guys on old bikes

 

[eviltwin]

i think that is a great idea. i typically
put wd40 all over the back tire right before i
drive...so if i can just use a hose from my engine
to oil the tire up real good i can save lots
of money on wd40.

yeah.. i will take the carbs off
tomorrow and clean them out
and set the float level.

i can't figure out what kind of
tool i need to set the float level.

i was driving it around
and it bogs down after a while
and then just starts to die.
it also backfires too...
so i hope that is just b/c it is running too
rich.

i took off the air filters (boxes)
and they are filthy. it looks
like you just have to replace the whole thing.

do you recommend aftermarket filters?
any suggestions?

-brent

 

[joe c]

that and run about 50psi. yeah, that vent should have a hose that goes toyour airbox. but you can vent it anyplace. along the frame rails under the seat and behind the rear tire if possible. smoke and steam are the norm.

bogging has nothing to do with that.

check your plugs.

jc

 

[kenessex]

Joe's right. Check your plugs. What they look like will tell you what might be going on. Black and wet and oily = Bad. Black and gas wet = not as bad. Rusty dry and electrodes missing = replace your plugs. Post what they look like. Filthy air filters = Bad. If you use individual air filters you will probably have to rejet the carbs, but OEM air filters are expensive (and ugly). What are you going to do with the bike? now might be the time to start on modifying it so replace the pipes too as long as you are going to rejet anyway.

Joe is also right about the 50psi trick. I wish I had remembered that one. It is the best when you seat a new tire using lots of PSI and then forget to reset the pressure. That in combination with the mold release compound and not pumping the brake back up can be very entertaining for everyone involved.

Ken

AHRMA 412
Vintage racing - old guys on old bikes

 

[ttilghman]

quote:
..... behind the engine to dribble oil onto the pavement in front of my rear tire.

rosko-

yeah. with your 450, keeping the rear tire, or anything behind the carbs, well oiled shouldn't be a problem.

-tt

 

[eviltwin]

okay.
so i replaced the spark plugs yesterday,
b/c the bike wouldn't even start.
one was black and old (on the left side)
and one was black and oily (on the right side)
and it looks like i have bad gaskets on
the right b/c there is a little bit of oil around
the seam on the manifold.

well
eventually i am going to replace the seat and
the bars for sure, and drop some excessive parts,
but b/c it is the scrambler, i really like the
high pipes...and even though they are quite heavy
i think they look really cool and don't want to loose them.
...so i guess my immediate plans are to get the
thing running and all the maintainance up to date
and then start with my modifications (since everything
i need to do costs more money than i have at this time).

so hopefully i can figure out how to set the float level.
the manual i have isn't very clear on that process.
i am not even sure what kind of tool i need to measure the
level. a ruler?

-brent