660 Compression - Yamaha Grizzly ATV Forum
Grizzly Engine & Transmission Discuss your Grizzly engine and transmission modifications here.

 
LinkBack Thread Tools Display Modes
post #1 of 7 Old 02-19-2010, 10:36 PM Thread Starter
 
Join Date: Feb 2010
Location: Rifle, CO
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
660 Compression

Hi i am new to the site as well as the grizzly. I just purchased an 02 660. I am going through all of the normal engine maintenance. I have ordered the manual but have a hard time waiting for things. I did a compression test tonight and found what i think is rather low. 90psi. Does anyone know what the 660 should get new? Also if anyone has any sugestions on things that need looked after more than other machines please let me know.
2strokerider is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old 02-19-2010, 11:39 PM
 
LIV4MUD's Avatar
 
Join Date: Dec 2009
Location: Keswick Ridge, NB
Age: 32
Posts: 362
Thanks: 72
Thanked 56 Times in 45 Posts
Rep Power: 86
      
That is very low. I'm not sure but I think it should be around 150.

2013 Brute 750 SE
LIV4MUD is offline  
post #3 of 7 Old 02-20-2010, 08:10 AM
RIP Mike Mayho
 
Mad Mike's Avatar
 
Join Date: Dec 2006
Location: Michigan
Age: 56
Posts: 3,705
Thanks: 78
Thanked 406 Times in 327 Posts
Rep Power: 129
           
thats ok there is a auto compression release built into the cam. the 700 is only around 60 psi. I have a 660 manual I will look and see. post back later.

Signature edited by GEARSLAYER in respect for the great late Mike Mayho known to us as Mad Mike. Mike's no longer with us people.

Mike road a mean...
07 770 Green Grizzly: EHS/Barker Port/Polish w/1mm o/s valves,Trinity 734 BBK, Barker +4mm Stroker Crank, Stage 2 Raptor Hot Cam, Barker true dual exhaust, PC5 w/Auto Tune, EHS Airbox Setup, 2mm o/s Throttle Body by KDS, 25.5" Pit Bull Growlers, Owner of Mike`s Powerhouse Mods #2 and #3 (formerly coop45 mods).

GOD BLESS MIKE'S SOUL. HE WAS A GREAT FRIEND AND ASSET TO THIS SITE. SEE YOU WHEN I GET THERE BUDDY! JAMEY (AKA GEARSLAYER).
Mad Mike is offline  
post #4 of 7 Old 02-21-2010, 01:24 AM Thread Starter
 
Join Date: Feb 2010
Location: Rifle, CO
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Thanks, i talked to one of the service guys at yamaha today and he said he thought it was around 100. I know it is not 150. if it was that hi you would need a lot higher of an octane rating than you can buy at the pump.
2strokerider is offline  
post #5 of 7 Old 02-21-2010, 10:33 AM
RIP Mike Mayho
 
Mad Mike's Avatar
 
Join Date: Dec 2006
Location: Michigan
Age: 56
Posts: 3,705
Thanks: 78
Thanked 406 Times in 327 Posts
Rep Power: 129
           
I stand corrected the 660 standard is 188.31 psi, minimum is 163.57 psi and maximum is 210.5 psi.

on a 700 it`s minimum 55.8 psi,standard is 64 psi and maximum is 71.7 psi

I got this info from the Yamaha Service manuals. I thought the 660 specs were a typo but I have 2 different manuals and both state the same thing.

Signature edited by GEARSLAYER in respect for the great late Mike Mayho known to us as Mad Mike. Mike's no longer with us people.

Mike road a mean...
07 770 Green Grizzly: EHS/Barker Port/Polish w/1mm o/s valves,Trinity 734 BBK, Barker +4mm Stroker Crank, Stage 2 Raptor Hot Cam, Barker true dual exhaust, PC5 w/Auto Tune, EHS Airbox Setup, 2mm o/s Throttle Body by KDS, 25.5" Pit Bull Growlers, Owner of Mike`s Powerhouse Mods #2 and #3 (formerly coop45 mods).

GOD BLESS MIKE'S SOUL. HE WAS A GREAT FRIEND AND ASSET TO THIS SITE. SEE YOU WHEN I GET THERE BUDDY! JAMEY (AKA GEARSLAYER).
Mad Mike is offline  
post #6 of 7 Old 02-21-2010, 11:17 AM
 
UpstateNYGrizz's Avatar
 
Join Date: Nov 2009
Location: Saratoga Springs, NY
Age: 52
Posts: 2,624
Thanks: 254
Thanked 750 Times in 492 Posts
Rep Power: 96
           
Mike has got it right, I just verified it with my service manual.

2016 Grizzly 700 Special Edition W/EPS - Carbon Metallic
27in Kenda Bearclaw HTR
Ricochet Full Skid Plates w/UMHV
Viper Elite 3000lb Winch w/Amsteel Blue
Totron 12in & 6in LED Light Bars
Yamaha Rear Cargo Box
PowerMadd Guards & Wraps
RotoPax 4 gal Fuel Pack

2009 Rhino 700 Special Edition - Black
27in Sedona Rip Saw on ITP Black SS108 Wheels
Viper Max 4000 w/Amsteel Blue
Ricochet Full Skid Plates, K&N Filter, EZ Steer Power Steering

Totron 12in LED Light Bar & 4 - 3in Cubes
J Strong Roof & Windshield

J Strong Front & Rear Bumpers
J Strong Dual Battery Isolator


2002 Grizzly 660 - SOLD

US Govt survey shows three out of four people make up 75% of the total population.
UpstateNYGrizz is offline  
post #7 of 7 Old 02-22-2010, 09:15 PM
 
smoke660's Avatar
 
Join Date: Nov 2008
Location: Memphis
Age: 39
Posts: 251
Thanks: 26
Thanked 39 Times in 33 Posts
Rep Power: 98
     
Wonder why there is a huge difference between the 660 and the 700...?

10 Outty 800 4" CATVOS, OL2s on Diesels, /// 'ed, Snorked, Rad racked, LTE Duals, LTE tune, ATR Spine, Ricochet, DPS, HIDS, Twin Air

06 Can Am Outty 800 MAX Modded out

06 686 Grizzly: Gone but never forgotten!!

http://www.youtube.com/user/atlas346/videos
smoke660 is offline  
Reply

  Lower Navigation
Go Back   Yamaha Grizzly ATV Forum > Grizzly Forums > Grizzly Engine & Transmission


Search tags for this page
2002 grizzly 660 compression
,
660 grizzly compression specs
,
checking compression 660 grizzly
,
compression test grizzly 660
,
compression test on a yamaha r 660 grizzly 03 model
,
cylinder compression spec for yamaha grizzly
,

grizzly 660 compression

,

grizzly 660 compression test

,

grizzly 660 low compression

,
need a compression specs for 2002 grizzly 660
,
rhino 660 compression test
,
rhino 660 only has 50psi compression
,
what is compression for 660 grizzly
,
what should tje compreesion be on a grizzly 660
,
yamaha grizzly 660 compression release
Click on a term to search our sites for related topics.

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



Similar Threads
Thread Thread Starter Forum Replies Last Post
EPI Clutch Compression Tool? Leatherneck The Tool Box 2 03-09-2015 09:33 AM
Whats your compression loudelectronics Grizzly Engine & Transmission 13 06-24-2009 09:08 AM
686 hi compression vs 734 bbk loudelectronics Grizzly Engine & Transmission 33 06-22-2009 10:03 AM
HIGH COMPRESSION PISTON ALC Grizzly Electrical & Lighting 0 02-02-2009 02:27 PM
660 compression micheal Grizzly Engine & Transmission 0 03-13-2007 08:52 PM

Posting Rules  
You may not post new threads
You may not 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