Breaking-in a new engine

stv1jzgte · #11 (**permalink**) 09-25-2009, 05:43 AM

Quote:

Originally Posted by donuts31

Run it hard but very load on the engine and engine rpm. Don't want anything to be constant (load/rpm). I'm fortunate that I live in a hilly area and I run it full throttle uphill and then full throttle on straightaway and lower throttle on downhill portion. Engine gets a great workout throughout its rpm and load range.

No better way to get this rings seated. Its combustion pressure that pushes the rings against the cylinder wall. If you pamper it for the first tank, the rings will not seal as they should.

this should be a sticky!

Salty Gator · #12 (**permalink**) 09-25-2009, 07:01 AM

Quote:

Originally Posted by drhofferber

was it 2stroke or regular oil...the best i have found is 2 stroke marine full synthytic...????Dennis

Pennzoil 2 stroke oil.....bought at CarQuest auto parts store

xlite · #13 (**permalink**) 09-25-2009, 08:25 AM

Quote:

Originally Posted by GearNut

Be carefull of marine grade 2-stroke oils. All but a few very old marine engines I have seen are water cooled (the water you are floating in).
Air cooled engines operate at different temperatures than water cooled engines and typically require an oil matched to the task.

Walmart Supertech Marine oil has proven to be very reliable in my case. Used at 50:1 from the start my engines have excellent power and very long life. One engine 14k and only now starting to lose compression.

stv1jzgte · #14 (**permalink**) 09-25-2009, 08:52 AM

Quote:

Originally Posted by xlite

One engine 14k and only now starting to lose compression.

jebus that's heaps!
my first motor i got thirdhand was 3 years old befor i got it and i did 1400km before the lil end bush disintegrated. **** oil

xlite · #15 (**permalink**) 09-25-2009, 09:12 AM

Long ago I used Pennzoil 2-stroke which is what all the airplane guys recommend but switched to Walmart marine because it was 1/5 the cost and just as good.

I'm about to try synthetic for the first time just to see if any of there's anything to those claims of magic performance increase. Last week rep said he's stop by with a bottle of Dominator but not yet. Might have to give him a call.

bandito · #16 (**permalink**) 09-27-2009, 08:15 AM

Xlite theres no majic involved its science bro, synthetics have better antifriction properties to increase the moving parts life from wear. Synthetics also help to cool the motor better due to better heat disapation in 4 strokes.

foureasy · #17 (**permalink**) 09-27-2009, 06:09 PM

is it just me or is castrol bean oil the only option. is it really a two stroke if it doesn't smell like bean oil?

meowy84 · #18 (**permalink**) 09-29-2009, 12:53 PM

Thanks for the info guys. Looks like there's a few oil brands/types that I can safely use for the initial break-in. I'll have to check which ones are sold in my local stores. Thanks again.

meowy84 · #19 (**permalink**) 09-29-2009, 01:06 PM

Speaking of bean oil , I use the stuff in my nitro model airplane glow engines...as high as 20%-25% castor content is recommended for some of my older lapped iron/steel piston and liner engines. Even thought the model fuel you buy already has castor oil in it I have to buy castor oil in little bottles from my local pharmacy and add to the nitro fuel I buy at my hobby shop since the new model engines with their aluminum pistons and brass or chromed liners typically need much less oil content. Since the castor oil itself doesn't burn boy is it ever messy coming out!

Also before the advent of 'modern science' old motorcycles and cars from the teens and twenties had to use castor as lubricant.

Nothing to do with our bikes but I thought I'd add that little tidbit anyhow. LOL

xmikex · #20 (**permalink**) 11-02-2009, 10:57 PM

Quote:

Originally Posted by donuts31

Run it hard but very load on the engine and engine rpm. Don't want anything to be constant (load/rpm). I'm fortunate that I live in a hilly area and I run it full throttle uphill and then full throttle on straightaway and lower throttle on downhill portion. Engine gets a great workout throughout its rpm and load range.

No better way to get this rings seated. Its combustion pressure that pushes the rings against the cylinder wall. If you pamper it for the first tank, the rings will not seal as they should.

For oil: Maxima 927 at 32:1 is all you will ever need. Once broken in, you can then go to 40-50:1 without any worries. I speak from exeperience.

i thought that you were suppose to run 28:1....im new to this so my mind is open to learn, tech me please if im wrong