Finally did a compression test on my bike

[thirdgenlxi]

And I must say... not too bad! I think they actually would be better though if I had the correct fitting for the compression tester. The coupling I have is the right diameter and thread pitch for my cyl head, but it's about half the length of the threads on the plugs, so it's not long enough to thread in with the proper o-ring. I had to end up using a dinky little a/c o-ring which was thinner and did affect my readings some because it only threaded on maybe one turn (it was leaking a lil bit at one point). Had I used the correct fitting (which I can't seem to find anywhere) I have a feeling they would have been damn near spot on

Readings were....

cyl 1 - 175 psi
cyl 2 - 165 psi
cyl 3 - 170 psi
cyl 4 - 165 psi

The spec in the manual is 178 psi, so even with the coupling that didn't fit quite right, they were all still pretty close!

http://i2.photobucket.com/albums/y15/thirdgenlxi/Misc%20Pics/th_MOV00759.jpg (http://s2.photobucket.com/albums/y15/thirdgenlxi/Misc%20Pics/?action=view&current=MOV00759.flv)

Plugs still looked pretty good too (had 38k miles on these plugs).... that's a very good thing, means she's running the way she should be (although I know it might be a lil rich cuz I need to have my PCIII tuned)

http://i2.photobucket.com/albums/y15/thirdgenlxi/Misc%20Pics/DSC00764.jpg

Oh yea air filter was looking pretty dirty too so I cleaned it out and re-oiled.... gotta get her all ready for this months round of roadtrips! LOL

http://i2.photobucket.com/albums/y15/thirdgenlxi/Misc%20Pics/DSC00771.jpg

[tached1000rr]

What type of airfilter you running? I was thinking of getting a K & N for the F4I.

[Gas Man]

That is killer Jared!! Good numbers.

Plugs look nice and good cinnamon color!

[thirdgenlxi]

What type of airfilter you running? I was thinking of getting a K & N for the F4I.

I've been running a BMC race for awhile now... very happy with it, it catches alot of crap. Everytime I take it out it's dirty again so I know it's doing it's job

[Rangerscott]

May you be blessed with another 100,000 miles. LOL

[Rider]

You're not running rich at all. The color of the plugs indicate you are exactly where you need to be with you air fuel ratio.

[BobTheBiker]

looks like its tuned pretty good to me. for a bike with 150+k miles on it only being a few pounds short of the spec on compression is EXCELLENT. that impresses me.

[ZUKIMON]

Those numbers are impressive man. Plugs loose awesome too. ;)

Here's a little something I learned from a guy at the dealership I work for. When he put the fuel pressure regulator on my bike (this is before I owned it) he also wanted to check compression. Due to the very small plugs that we have, he had no way to connect his standard guage to it. He took an old plug that he had from changing these and broke the ceramic out of it and removed everything but the threaded end/base and the hex head. He then threaded the upper portion of that to match his hoses for his guage and there you have it, instant adapter. I plan on doing the same thing the next time I change out the plugs as I want to be able to keep a check on it each time I do plugs. ;)