05-29-2007, 02:29 PM #1
- Join Date
- Apr 2007
Compression test, are the #'s weird here???
I have a 2004 GP1300R Riva stage 2 and some fourm ideas done to craft also. I did a compression test yesterday and these are my #'s.
Cylinder #1: 140lbs.
Cylinder #2: 140lbs.
Cylinder #3: 130lbs. (this is the one I'm concerned about, should I be)???
Riva Yamaha posted the compression #'s to be 145-150lbs for all 3 cylinders. Or is this just another one of their sales lies Are these compression #'s look about right. I'm not sure on in this type of thing.
Also, what can I do to get alittle bit more compression out of my engine. If I can, how do I go about doing it???
05-29-2007, 02:36 PM #2
#3 is typically lower than #1 and #2. Looks to be ok in my book, but I am sure someone will verify.
05-29-2007, 02:40 PM #3
05-29-2007, 02:57 PM #4
05-29-2007, 03:28 PM #5
05-29-2007, 03:48 PM #6
05-29-2007, 06:23 PM #7
05-29-2007, 06:46 PM #8
05-29-2007, 11:08 PM #9
And.....its 3% loss in air density every 1000' you go up.Mine loss is 12% up here!!!!!!!!!!! On a 225hp motor,im getting(average) a 27hp loss !!!!!!!.... Another 27hp should give me 3.5-4 mph gain!
05-29-2007, 11:21 PM #10
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