nelam

I am trying to clean out the internal of my stock Nikki carb on my SA22C. I am thinking should I use the off the shelf carb. cleaner. The carb seems to function correctly, and I just want to clean it out as part of the tune up. Because when I look down into the carb. the venturi, and the throttle plate seemed to be a bit dirty.

Do you guys recommend cleaning the carb. by spraying carb cleaner into the barrels while idling? What else can I do to clean out the carb.? Which carb. cleaner should I use? I have good experience on Gumout products on piston engines.

I am worrying about the carb. cleaner will dilute the lubrication to the apex seals.

I am currently running MMO as premix (1oz MMO: 1 gallon of fuel), and OMP blocked off.

Thanks,
Nelson

Cody

I just spilled water down my carb when I read posts about other people doing it.

I was quite skeptical, and figured the car would just die....

But it worked, and damn, did it ever!

After the first burst of steam out the exhaust, it laid down some heavy carbon on the ground a foot from my exhaust tips. All of that crap, gettin cleaned out, with just water.....

RotaryRyan

Ive heard from a couple people that amsoil powerfoam works good. Never tried it.

DriveFast7

iTrader: (1)

i've used Gumout carb cleaner spray on my rotaries since 1988. great stuff. use one hand to bump up the rpms to 2-3000 while spraying away.

don't sweat the oil premix. it's not like you're revving the engine to 9000rpms with no oil injection at all!!!

one ounce premix per gallon is a LOT for a street car that spends most of it's life under 5000rpms. 1oz:1g is what we use at the race track; of course we shift anywheres from 7000 to 9600rpms all weekend long so our needs are different. do you foul plugs a lot?

Lotus00

I just sprayed carb cleaner down the carb while it was idling, it works fine. I dont think you need to worry about the mmo getting diluted, just dont spray a whole can down there in 1 second. just a little at a time and there should definatly be no problems.

I just used the ghetto carb cleaner my dad bought for cleaning the carb on our atv. it got my carb shiny clean

inittab

I use Amsoil PowerFoam and it works great! You will not be disappointed with the results.

http://www.syntheticoildealer.com/hall/powerfoam.htm

Sterling

Here's food for thought, as you seem to be extra worried about seal lubrication...

The prescribed OMP setting for the 12A is 2cc/6min@2000rpm.

That translates into 1cc/6000rpm...0r 1000 cubic millimeter per 6000 rpm...
or

1/6 of 1 cubic millimeter of oil, divided by two rotors, per revolution!

...Go ahead and spray some carb cleaner in there!

nelam

You are right Sterling. I am extra worried about seal lubrication. On the last fill up, I put almost 14oz of MMO into the gas tank but it only took 9 gal. of fuel to fill up. I was worrying about not getting enough lubrication for the apex seals, since I have just recently blockoff the OMP.

Being an graduating civil engineering student myself. I should do some realistic calculation on MMO to fuel ratio I should use. But in this case, the more the better. It will increase the safety factor, and do some internal engine cleaning with the richer ratio. Yeah, I am just being lazy. Dump the whole thing in there is easier than doing cals.

On the other hand, maybe that's why the car smokes a little at higher rpm due to too much MMO in the fuel????? I guess

Nelson

DriveFast7

iTrader: (1)

it'll smoke more at lower rpms because theres too much MMO in there for the amount of fuel flowing into the motor.

ratio is more favourable at higher rpms with it's pulling a lotta fuel.

BadAssRX-7

when i want to clean a carb/intake while its on a car i have tried a ton of the "carb. cleaners" the best stuff i have found so far is in a gold can with blue writing. i think its made by valvoline or stp. its carb. throttle body cleaner and it works GREAT. you see all the brown crap on the sides of the carb. it just washes right off with out even scrubing it. its about 4-5$ a can but it does a hell of a job. now for off car cleaning i like the carb cleaning dip you can get from napa it needs to be warm so it works best... i do them in summer time or in a nice hot shop area. it will get you high as a kite and it burns like hell but it only takes 5 min and the parts look brand new.