Oily

MrLarkins · #1 08-12-2008, 05:46 PM

I am thinking I have an air flow / mixture problem...still
Now, I have taken the muffler off and used a grinder on the gasket and opening on the muffler pipe, so that they matched the exhaust port on the engine. But it's leaking oil.

Intake angle pipe

Intake on engine

Exhaust on engine

Exhaust (muffler)

MrLarkins · #2 08-12-2008, 05:46 PM

Oil on Case

Head and Plug

SUGGESTIONS? SHOULD I MATCH THE INTAKE PORT LIKE I MATCHED THE EXHAUST PORT?

jf30cp · #3 08-12-2008, 06:13 PM

looks like to me you need to get some new gaskets. also what mix are you running? looks like you are running way way to rich with all that un-burned oil. I am no expert but this is what i think.

datz510 · #4 08-12-2008, 06:15 PM

Looks like the head gasket was leaking a little too. Definitely replace the gaskets. Nice job port matching! Looks really nice!

misteright1_99 · #5 08-12-2008, 06:34 PM

You might also want to look at the flange on the exhaust and intake manifolds. Mine were nowhere near flat.......

MrLarkins · #6 08-12-2008, 08:17 PM

need a port and polish expert here!!! should i match the intake like i matched the exhaust, or does that not matter? what gain could i expect if i did? would i even see a gain?

i mixed 4oz oil to 1.4 gallons...i should be the opposite of oil rich shouldn't I?, i'll add some more straight gas to my mix and see if it clears up any.

Bikeguy Joe · #7 08-12-2008, 09:06 PM

That's already pretty lean on the gas/oil mix ratio.

Bikeguy Joe · #8 08-12-2008, 09:07 PM

I think your carb is set a bit rich too.

MrLarkins · #9 08-12-2008, 09:17 PM

Quote:

Originally Posted by Bikeguy Joe

I think your carb is set a bit rich too.

you talkin' 'bout that clip on the pin thingY?, if so, mines second from the top

Bikeguy Joe · #10 08-12-2008, 09:21 PM

One question for those of us whom are too tired to "do the math"...what ratio is 4 oz. of oil to 1.4 gallons of fuel?

Even though you are set at the second notch, you may still be rich. The last bike I built I had to go to the top for the first time.

Also, keep in mind that the "leaner" the oil to fuel mixture, the "richer" the fuel to air ratio.

So...if you are running something like 40:1 or 50:1, then the second notch may be too rich.

Personally, with the bushed wristpin engine, I wouldn't run any leaner than 32:1.