bedell99

~SPONSOR~
May 3, 2000
788
0
Dominater. It always seemed like a good oil. It lubricates great. I just really think I just had to many hours on the bike, but I'm definetely going to use Steves advice and try a new oil.

Erik
 

NO HAND

~SPONSOR~
Jun 21, 2000
1,198
0
bedell99 said:
...but I'm definetely going to use Steves advice and try a new oil.

Erik
That's a very good idea. Polyolester really is a huge progress in oil technology but unfortunately it is also very expensive. That's why only a few oil companies have started using it yet.
 

bedell99

~SPONSOR~
May 3, 2000
788
0
Actually POE oil has been used in the HVAC industy as lubricant for refrigerant for years. I know Trane uses it in there R-12 and R-134A refrigerants as an oil for the compressors. I think now it is just being used as a 2-stroke oil which makes sense.

i went riding today. the biggest difference in performance though that i noticed was in the top end. i think the cometic gasket might be a bit thicker, because this baby was revving great on top. No loss on bottom either. Just running real crisp.

Erik

Erik
 

pokemanyz

Member
Jan 22, 2000
41
0
steve125 said:
The only difference between an A piston and a D piston is .0005......YZ 250's are a bit on the loose side, so no problems with a D piston in an A cylinder.

The difference between an A and B piston is .00016 thats pretty close to nothing.


I stand corrected !

I was going by memory since I don't have a Yamaha anymore.
I thought it was a .005 difference. :moon: :blah: :bang:
 

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