compression test

[ivtecnician]

whats the normal psi test on a 99 gsxr 750 srad?
i did mine today and at normal running temp 150psi all across

[Patrick]

Sounds a little low, did you have the throttle wide open when you did it?
When was your last vavle adjustment?

[ivtecnician]

yup throttle wide open i just got the bike not to long ago god only knows how they kept up with it
when i got it, it needed brakes,tires,oil change(motul15w40),air filter cuz it didnt have one, had a completely hollow yoshi pipe rs3 but just replaced it with a yoshi trs
i think it might need rejetting title says 99 but it has carbs
i talked to a suzuki tech today he said im within specs but i dunno
with the hollow pipe and at a stand still when i would go to give it full throttle it would bogg around 5-7k then open back up
now it doesnt do it with the new pipe
we put a wide band on it from idle it would run 14.3-15.7
full throttle
1 14.5
2 same
3 15.6
4 16.0
5 15.9
6 14.0
7 11.9
8 11.0
9 10.8
10 10.5
this was with a fjo wideband

[josh302]

seams lean 1-6.

[Patrick]

Optimum ratio is 13.2.


Patrick

[ivtecnician]

how can i do a valve adjustment? i was reading that they have to be re-shimmed

[josh302]

you need a book, I have one for a busa, I think its diff on those

[ivtecnician]

i got the manual but damn it looks like i got to take alot of stuff off
first time workin on bikes

[level5]

valve adjustment isn't going to help with the bog. It's the carb, accelerator jet that is dirty. Look at line 4 on your read out that is about your 5-7k rpm. 16? Compression at 150 is normal.

[ivtecnician]

is there an adjustment screw for low and high end mixture

[jetcycles]

sounds like a service manual is what you need. . .

[level5]

is there an adjustment screw for low and high end mixture


That screws is for idling only.

[ivtecnician]

sounds like a service manual is what you need. . .
just got it today lots of good stuff in there but dang there are so many small parts i think it would be best to switch to f.i.