Compression test on a 660 - Yamaha Rhino Forum - Rhino
Tutorials How To Guides for Modifications, Bolt-Ons, Maintenance and Troubleshooting - Pictures make it better!

LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 04-05-2012, 06:35 AM Thread Starter
Join Date: Oct 2007
Location: South Georgia
Posts: 81
Compression test on a 660

Picked up a used engine for my 07 Rhino. Any idea what numbers i should be looking for on a compression test?Thanks
MartinD is offline  
Sponsored Links
post #2 of 4 (permalink) Old 04-05-2012, 06:57 AM
Gear Grinder
str8tjaket's Avatar
Join Date: Jun 2011
Posts: 223
i believe you have to do a leakdown test
str8tjaket is offline  
post #3 of 4 (permalink) Old 04-05-2012, 08:20 AM
Site Supporter
CamShaw's Avatar
Join Date: Jan 2007
Location: garden grove, ca
Posts: 7,752

I heard there was a test sequence in the manual for checking compression with the decompression release intach, never checked into it....let us know...

07 rhino,camo,bilsteins,camshaw 727,HSR carb,custom clutching,camshaw spindles,custom cage,bed delete,all go fast rzr eater! 714 883 6171
CamShaw is offline  
Sponsored Links
post #4 of 4 (permalink) Old 04-05-2012, 08:49 PM
Join Date: Feb 2012
Location: Ca.
Posts: 118
I just went throught this and scared the crap out of me @ 70 lbs. So I made some calls and found out to get the best result with a compression test and not a leak down test.

1 Make sure battery is fully charged.

2 Make sure you use a good tester not a Harbour Freight.

3 Push the throttle to the floor when cranking.

I ended up @ 130lbs up from 70 after making these changes which was a little low but my valves were extremely tight so after the valve adjustment I am positive it would read where it should. I do not know for sure but I believe the 660 should be around 185 lbs.
knoxxx29 is offline  

  Lower Navigation
Go Back   Yamaha Rhino Forum - Rhino > Technical > Tutorials

Quick Reply

Register Now

In order to be able to post messages on the Yamaha Rhino Forum - Rhino forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome