what is good compression for triz

[erikb45]

85 triz 250 whaat is good compression for this motor?

[Bryan Raffa]

whats yours? it could be any where from 150 up to 200 depending whats done to it.

[erikb45]

i got almost 150 i think it was 148 and i kept kickin as fast as i could and it wouldnt climb no more. if this is no good how muchwill a basic overhaul cost for the topend? can i do this myself

[Bryan Raffa]

your doing it with the throttle wide open right!

[erikb45]

nope i forgot about that part!!! damn it what happens at wot

[Bryan Raffa]

thats what ya need do do when your doing a compression check with a guage
hold the throttle open, with the guage in the head, and kick it till the needel doesn't climb any more,,do that and report back. I bet it will be higher.

[erikb45]

for that ill have to wait for tommorrow. but i think im goin out this weekend and clear the old gas out. need a good place/s to ride where no problems from local patrol got a couple places for me to try ill travel a little ways dying to get this thing in the dirt. thanx for the help

[Bryan Raffa]

probley wouldnt hurt to clean the airfilter and oil it, and clean the carb out by removeing the float bowl and spraying some carb cleaner,and blow it out with some air, If it hasnt been run in a wile. And check the oil! theres a screw on the clutch cover that you remove and fill it till it comes out of it,The screw is right behind the waterpump where the 2 hoses connect on the cover,It's all by itself.

[erikb45]

i took the whole carb apart a;ready and blew out the jets with carb cleaner and compressed air. im thinking about putting a k&n in maybe even w/o the air box ( i wont see mud or water that deep) .

as for the oil what oil is beter then otthers and how much does it take if i change it .

[Bryan Raffa]

if you do that get a outerware for the filter! k&n's will let in fine dust particals through unlike a oiled foam filter's, I recomend a outerware for any clamp on

[03 ORANGE SHEE]

i run 10-40 in mine, but i have run atf, 90 wt, 20-50wt and i dont feel a difference

[ATCR250R]

Did you get a new compression number yet?

[erikb45]

yes i did just got home and i was able to get it up to 165 which if im not mistaken is decent. escpecially for sitting for 3 years

[Bryan Raffa]

ya thats really good!

[erikb45]

yeah feel better about not rebuilding the top end! appreciate the help

:Bounce :Bounce :Bounce :Bounce

[erikb45]

oh yeah orderd my bearings from dads
changed the tranny oil today
pulled out the packing in the pipe

gettin things done!

[slothminx]

I had 168psi on my Z when I bought it, I took it apart to check out the condition of the topend anyway, Good thing I did!!!! The piston had 2 big cracks and 2 smaller ones.

I rebuilt the topend and im now reading 195 psi ;)

[erikb45]

:( that doent make me feel good

[mnnmaz]

hell run it and when it pops do a bigger bore! :)

[slothminx]

All im saying is, you should probably just take the top end to give it a check over ;). 165 psi is fine for compression it will run strong. But its always good to check the topend condition to save from having a meltdown ;)