What is the difference between a VES and Non VES engine/ - Snowmobile Forum: Your #1 Snowmobile Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 20 (permalink) Old 10-11-2010, 11:29 AM Thread Starter
Registered User
 
ped917's Avatar
 
Join Date: Oct 2010
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
What is the difference between a VES and Non VES engine/

Got a 01 RMK 800 snow check, was curious what the difference is between and VES and Non VES engine? and how do I know what I have?
ped917 is offline  
Sponsored Links
Advertisement
 
post #2 of 20 (permalink) Old 10-11-2010, 02:22 PM
Registered User
 
Join Date: Sep 2010
Posts: 14
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Variable Exhaust System .... power valves im pretty sure
2001polarisxcsp is offline  
post #3 of 20 (permalink) Old 10-11-2010, 06:05 PM
Registered User
 
69CRUZR's Avatar
 
Join Date: Feb 2009
Location: White Bear Lake, MN
Posts: 1,557
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
yes it meants variable exhaust valve. your 01 SHOULD have them I believe. They are two circular black valves on each clinder towards the top. post a pic

1998 Polaris XC600 (with a XCR sleeper hood on it)
2006 Polaris Indy 500
1969 Chevy C10 "69CRUZR"
-383 stroker 450 hp 479 ft lbs of torque

2006 Chevy Colorado -daily driver


----------------------------

New Project Truck, this one for my Pops!

1953 GMC 5 Window Shortbox Stepside

Drivetrain: 2006 5.3 Liter v8 with 4l60e from an 06 Silverado.

Full IFS front suspension kit w/rack and pinion steering, and 4 link rear from TCI Enterprises.
69CRUZR is offline  
post #4 of 20 (permalink) Old 10-11-2010, 09:13 PM
Registered User
 
98700xc's Avatar
 
Join Date: Apr 2010
Location: Roseville Mi
Posts: 7
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
A 01 RMK 800 is a NON VES, the polaris 800's didn't get exhaust valves until 02.
98700xc is offline  
post #5 of 20 (permalink) Old 10-12-2010, 07:44 AM Thread Starter
Registered User
 
ped917's Avatar
 
Join Date: Oct 2010
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
is that a good or bad thing? I have been reading alot about the crank issues with this motor. From what I have gotten out of it, the non VES engines are alot better?
ped917 is offline  
post #6 of 20 (permalink) Old 10-13-2010, 02:48 PM
Registered User
 
stimpy's Avatar
 
Join Date: Feb 2004
Location: Duluth, MN
Posts: 354
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
the motors must be almost identical,I have a 2000 500 xc, and it has the castings for VES on the jugs, like it was made for it, but never milled out, and my son has a 99 440 xcr with VES,motors look identical to me, the exhaust manifold looks a little different, but thats all i can see.

2000 Indy 500 XC, Fox shocks up front, M10 trail in back. '99 440 XCR for my son. 96 XCR 600 SP tripple pipe, 862 miles on it !! (until it snows....then look out, odometer !!)
stimpy is offline  
post #7 of 20 (permalink) Old 10-13-2010, 02:50 PM
Registered User
 
hawkster's Avatar
 
Join Date: Oct 2010
Posts: 328
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i think only the libertys have ves too, no fujis with it
hawkster is offline  
post #8 of 20 (permalink) Old 10-13-2010, 03:23 PM
Super Moderator
 
BC_Dan's Avatar
 
Join Date: Jan 2004
Location: oregon
Posts: 13,420
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
The early Liberty engines did not have VES. But the 98 440XCR did have it. The 2000 600 Edge was next, then 2002 for the 700 and 800. Not sure when the 500 got it, I know the 2006 has it.

An engine designer can port a cylinder to make good power at lower RPM, or good power at high RPM. Porting in the cylinders can't work both ways. So, the Variable Exhaust closes the port for good low end performance, but the guillotine valve moves out of the way with engine compression so that the port can open up for good high end performance. Without the VES, porting is a compromise between low and high RPM performance. So, an engine equipped with VES (or other variable exhaust) should have a bit more power than one without.

2007 Dragon RMK 700 155", 2008 RMK 600 155", 95 Prowler 550 2-up, Really OLD AC Cheetah

http://www.avalanche.org/accidents.php
BC_Dan is offline  
post #9 of 20 (permalink) Old 10-13-2010, 04:29 PM
Registered User
 
hawkster's Avatar
 
Join Date: Oct 2010
Posts: 328
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
winter 2000-01 for the 700 with ves Snowtech Magazine - Snowmobiles, Snowmobiling, Snowmobile Techncial Data

600 xc had ves for 2000

2000 xc sp 500 had ves
hawkster is offline  
post #10 of 20 (permalink) Old 10-13-2010, 05:50 PM
Super Moderator
 
BC_Dan's Avatar
 
Join Date: Jan 2004
Location: oregon
Posts: 13,420
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Interesting. That link also talked about triples with VES, I looked at the Polaris website, and the 700 and 800 XCR triples also had VES in 1999. Who'd of thunk it

2007 Dragon RMK 700 155", 2008 RMK 600 155", 95 Prowler 550 2-up, Really OLD AC Cheetah

http://www.avalanche.org/accidents.php
BC_Dan is offline  
post #11 of 20 (permalink) Old 10-13-2010, 06:11 PM
Registered User
 
hawkster's Avatar
 
Join Date: Oct 2010
Posts: 328
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
hmmm liberty triples? dont think ive seen one, might have to actually read that
hawkster is offline  
post #12 of 20 (permalink) Old 10-13-2010, 06:12 PM
JDS
Registered User
 
JDS's Avatar
 
Join Date: Feb 2005
Location: Dakota Territory
Posts: 1,176
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The 500 XC didn't have ves in 2000, but the xp sp did. My son has a 500 XC SP 2000.

JD
____________
2008 Polaris RMK 600-155"
2001 Arctic Cat ZR500
2003 Polaris Trail RMK 550F(wife's)
JDS is offline  
post #13 of 20 (permalink) Old 10-13-2010, 06:19 PM
Registered User
 
hawkster's Avatar
 
Join Date: Oct 2010
Posts: 328
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i have actually never seen a liberty triple before, weird
hawkster is offline  
post #14 of 20 (permalink) Old 10-13-2010, 06:55 PM
I just fix 'em...
 
IRONDOG's Avatar
 
Join Date: Oct 2006
Location: Clio, Michigan
Posts: 1,045
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Quote:
Originally Posted by ped917 View Post
is that a good or bad thing? I have been reading alot about the crank issues with this motor. From what I have gotten out of it, the non VES engines are alot better?
The cranks are the same on VES and non-VES 800 engines and they all are subject to the same problems.
Jerry

They all start turning to junk as soon as you pull the rope...
www.snowmobileswapmeet.com
IRONDOG is offline  
post #15 of 20 (permalink) Old 10-13-2010, 06:56 PM
I just fix 'em...
 
IRONDOG's Avatar
 
Join Date: Oct 2006
Location: Clio, Michigan
Posts: 1,045
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Quote:
Originally Posted by hawkster View Post
i have actually never seen a liberty triple before, weird
This is not a Liberty- it's a Fuji.
Jerry

They all start turning to junk as soon as you pull the rope...
www.snowmobileswapmeet.com
IRONDOG is offline  
post #16 of 20 (permalink) Old 10-13-2010, 07:00 PM
I just fix 'em...
 
IRONDOG's Avatar
 
Join Date: Oct 2006
Location: Clio, Michigan
Posts: 1,045
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Quote:
Originally Posted by hawkster View Post
i think only the libertys have ves too, no fujis with it
The 1999 XCR700 is a Fuji with valves as are all XCR800 engines.
Jerry

They all start turning to junk as soon as you pull the rope...
www.snowmobileswapmeet.com
IRONDOG is offline  
post #17 of 20 (permalink) Old 10-13-2010, 07:25 PM
Registered User
 
hawkster's Avatar
 
Join Date: Oct 2010
Posts: 328
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
ahhhhhh right you are, Quoted from snowgoer mag: "The 794cc liquid-cooled Fuji triple is in its sophomore season. Three flat slide 38mm carbs feed the NiCaSil-lined cylinders through case reed induction. Digital CDI lights the fire and the spent charge exits through triple exhaust ports. "


Those ports change in size for maximum output at all rpm levels, thanks to Polaris variable exhaust system (VES). Polaris and Fuji engineers revised the system slightly for 2000 to make the engine fit in the smaller Gen II chassis. But, while they were at it, the engineers tweaked the system to gain about 3 hp, according to Polaris officials. They also used new springs in the VES that are quite similar to the ones suggested in a Polaris service bulletin last winter. Early season dyno pulls on the 2000 engine back up the Polaris hype: racers are getting 155-157 hp out of the triple in stock form, compared to a generous 152 hp last year. The power hit is immediate, with a broad and steep powerband.
hawkster is offline  
post #18 of 20 (permalink) Old 10-13-2010, 08:32 PM
Super Moderator
 
BC_Dan's Avatar
 
Join Date: Jan 2004
Location: oregon
Posts: 13,420
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Sweet engine, hawkster! Gotta love the sound of those triple/triples!

2007 Dragon RMK 700 155", 2008 RMK 600 155", 95 Prowler 550 2-up, Really OLD AC Cheetah

http://www.avalanche.org/accidents.php
BC_Dan is offline  
post #19 of 20 (permalink) Old 01-07-2012, 03:31 PM
Registered User
 
Join Date: Nov 2011
Location: Utah
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
so after all this, I have a 99 RMK 700.....does this have the VES? Does it really make a big difference?
AvyDogHandler is offline  
post #20 of 20 (permalink) Old 01-07-2012, 06:20 PM
Registered User
 
69CRUZR's Avatar
 
Join Date: Feb 2009
Location: White Bear Lake, MN
Posts: 1,557
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
No it does not, and you wont notice. Those engines are monsters by themselves! I have the 600cc version of the "big block" Liberty. Yours should look identical to this. The little black squares by the exhaust ports on the pics a few posts above is what an exhaust valve looks like. If yours had it it would be called the small block and have those black valves directly above the exhaust Y-pipe.
Attached Thumbnails
Click image for larger version

Name:	liberty.jpg
Views:	2121
Size:	64.0 KB
ID:	18263  

1998 Polaris XC600 (with a XCR sleeper hood on it)
2006 Polaris Indy 500
1969 Chevy C10 "69CRUZR"
-383 stroker 450 hp 479 ft lbs of torque

2006 Chevy Colorado -daily driver


----------------------------

New Project Truck, this one for my Pops!

1953 GMC 5 Window Shortbox Stepside

Drivetrain: 2006 5.3 Liter v8 with 4l60e from an 06 Silverado.

Full IFS front suspension kit w/rack and pinion steering, and 4 link rear from TCI Enterprises.
69CRUZR is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Snowmobile Forum: Your #1 Snowmobile Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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