- Location
- Jeff city MO
What should the compression on a 02 yamaha gp 800 be .found one for the wife at a good price
Compression on a 2002 yamaha gp800
- Thread starter puppy
- Start date
Don 79 TA
Still Fat....
- Location
- Madision/Huntsville AL
i'm not sure, but somewhere around 170???
maybe take a gauge and make sure both cyl's are the same or close to each other
maybe take a gauge and make sure both cyl's are the same or close to each other
surferdude345
X-H
- Location
- Blacksburg for school
about 150 also check the carbs they tend to get real corroded on those if they aren't taken care of
w-nut
x2 nut
- Location
- christchurch new zealand
yep thats what my gp800 has for compression . i was worried about it been low when i brought it as well but after doing some research i was told 120psi is spot on the money . dont know if late model ones have more compression tho
- Location
- Jeff city MO
Thanks it is at 120 it just look a little low but I never checked a 800 before could you tell me if that is a good boat
tmetz
Camp Superjet!
- Location
- Naples, Florida
what motor is it? P/V or Non P/V? Im guessing your talking about the gp800r if its a 2000
- Location
- mobile alabama
all gp800 are pv
you will need to install new oil inj lines or go premix
also aftermarket pv or waveater clips
you will need to install new oil inj lines or go premix
also aftermarket pv or waveater clips
- Location
- Jeff city MO
Its a 2002 gp800r it has waveater clips on it 120 psi compression. do the oil inj lines go bad
w-nut
x2 nut
- Location
- christchurch new zealand
well if the ski looks in good condition and starts and runs fine you cant go to wrong really . compression sounds good and wave eater clips is a huge plus. i dont know about the oil lines as mine is premix . its alot easer to have all your skis premix that way there is no confusion over what gas you have mixed and dont have mixed
tmetz
Camp Superjet!
- Location
- Naples, Florida
No, I just picked up a GP800R...
Your compression is awesome! 120 - 120 doesn't get any better on these motor's!
Stop worrying and get out and ride!!!!!!!!!!!!!!!!! :brap: lol
Your compression is awesome! 120 - 120 doesn't get any better on these motor's!
Stop worrying and get out and ride!!!!!!!!!!!!!!!!! :brap: lol
- Location
- San Antonio
Yeah, i heard alotta 
about the oil lines on yamahas for 2000 and 2001, mine was the sport boat with twin 1200pv motors but i doubt they used different oil line between the boat and the ski... change out those lines..., what i read most get brittle and old and fall off becasue they were left alone for 8 years...
about the oil lines on yamahas for 2000 and 2001, mine was the sport boat with twin 1200pv motors but i doubt they used different oil line between the boat and the ski... change out those lines..., what i read most get brittle and old and fall off becasue they were left alone for 8 years...