09-25-2010, 08:19 PM #1
Top End Rebuild Compression Issues (02 GP1200R)
Just got my cylinders back from Millennium Technologies and some Pro-X Pistons to match. I ran a compression check and it was 125 across the board. I Figured I would run some flush water to check my idle settings before break in the morning for about 5 mins.
I DID RUN THE ENGINE BEFOR ATTACHING THE WATER & DISCONECTED IT BEFOR TURNING THE ENGINE OFF
I checked the compression after I did that and starting from the Cylinder from the battery box I got
113, 123 and 125
Plugs all looked the same. Little slashes of oil on them.
Any ideas? Should I still continue with breaking it in, in the morning?
2002 GP1200R, Pre-mix with Amsoil Interceptor, Riva Free Flow and Stinger 3 Exhaust, R&D Filter Box
09-25-2010, 09:07 PM #2
- Join Date
- Apr 2010
- Greenville, NC
If i remember correctly you need to break it in before you will get a true compression reading. Since the rings are not seated yet.
09-25-2010, 10:04 PM #3
I hope so man. It would suck to have to get the cylinders re-plated or new pistons rings and gaskets. Thanks for the reply! Anyone else have any input?
09-26-2010, 12:14 AM #4
09-26-2010, 12:14 AM #5
09-26-2010, 12:16 AM #6
Thanks WFO! I guess I will be hitting the lake in the morning! Thanks again guys!
09-26-2010, 08:34 AM #7
- Join Date
- Jan 2006
- Texas City, Texas
09-27-2010, 06:30 AM #8
2 hours of breaking in yesterday. I checked the compression this morning. Starting from the rear of the ski I got 120, 125 and 127. I will do some more breaking in and post the results. Thanks Again Guys
11-02-2010, 05:06 PM #9
6 hours on engine since rebuild and the compression is 125, 125 and 123
Thanks again guys!
11-02-2010, 05:26 PM #10
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