820vs840 kit - Kawasaki Teryx Forums: Kawasaki UTV Teryx Forum
Kawasaki Teryx General Discussions General discussions pertaining to the Kawasaki Teryx.
Maintenance, cleaning, etc.

User Tag List

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 97 (permalink) Old 12-02-2009, 06:41 PM Thread Starter
Member
 
Join Date: May 2009
Posts: 41
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
820vs840 kit

Hi guys,
I'm having hunterworks build me a motor with the 820 fundy kit. My ? is what is the real difference in the 820 vs the 840, and how much hp does each have.
Fox Run is offline  
Sponsored Links
Advertisement
 
post #2 of 97 (permalink) Old 12-02-2009, 06:50 PM
Senior Member
 
Junior's Avatar
 
Join Date: Jul 2008
Location: Alberta, Canada
Posts: 516
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
You should read some threads on these motors because you are about to open a big can of worms, I know both motors have alot more HP & torque than stock! I think you will still be happy with the 820 or 840.

27" XTR's on ITP SS212 Chrome 14's
Dynatek N.P.
FST Standard Bore
Dalton Clutch Kit w/O.Drive
Muzzy's - ceramic coated
SDR Deluxe Cage w/roof
SDR Front Bumper w/winch
Twisted Stitch Vortex Front Heated Seats
Twisted Stitch Vortex Rear Heated Bench
Beautiful Lowered Seat Bases by SDR - Thanks!
Crow 5-point harnesses (x5)
Junior is offline  
post #3 of 97 (permalink) Old 12-02-2009, 07:11 PM
Banned
 
Join Date: May 2008
Posts: 1,124
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
There will be a little gain in torque but that is it. The main power gain will come from the cams if you are not running any ported heads.
Four Stroke Tech is offline  
 
post #4 of 97 (permalink) Old 12-02-2009, 07:47 PM
Senior Member
 
Join Date: May 2008
Posts: 3,999
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Quote:
Originally Posted by Four Stroke Tech View Post
There will be a little gain in torque but that is it. The main power gain will come from the cams if you are not running any ported heads.
Best answer I have ever seen from FST.



Hunterworks is offline  
post #5 of 97 (permalink) Old 12-02-2009, 07:48 PM
Senior Member
 
Join Date: May 2008
Posts: 3,999
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
If all things being equal except for 820 versus 840 20cc's are not going to change anything you could feel. I engine dyno might could show you but your butt won't know it.



Hunterworks is offline  
post #6 of 97 (permalink) Old 12-03-2009, 03:54 AM Thread Starter
Member
 
Join Date: May 2009
Posts: 41
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Well i guess my next ? is can i just put in a performance cam, and not do anything to the heads. And if i do need to do the heads how much$$$$$$
Fox Run is offline  
post #7 of 97 (permalink) Old 12-03-2009, 05:42 AM
Senior Member
 
Join Date: May 2008
Posts: 3,999
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Yes you can but in my experience head work only helps way up top.

Some would say all power in a CVT vehicle is high rpm power but from 0-20 while the belt is shifting out and the RPM is going up it is in the lower RPM range.

Only if I was doing constant top speed running would I do head work.



Hunterworks is offline  
post #8 of 97 (permalink) Old 12-03-2009, 07:16 AM
Banned
 
Join Date: May 2008
Posts: 1,124
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Quote:
Originally Posted by Hunterworks View Post
Best answer I have ever seen from FST.
All my answers have been truthfull,you just didn't want to hear the truth sometimes.
Four Stroke Tech is offline  
post #9 of 97 (permalink) Old 12-03-2009, 07:47 AM
Senior Member
 
Join Date: Jul 2009
Posts: 301
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Well seeing how I've done several 840's and did my teryx to an 820 simply because I had the pistons laying around I can say that there isn't much difference but if you're going to pay in full for a kit then why bother with the 820?
Shan is offline  
post #10 of 97 (permalink) Old 12-03-2009, 08:01 AM
Banned
 
Join Date: May 2008
Posts: 1,124
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Quote:
Originally Posted by Shan View Post
Well seeing how I've done several 840's and did my teryx to an 820 simply because I had the pistons laying around I can say that there isn't much difference but if you're going to pay in full for a kit then why bother with the 820?
The reason is his builder has a problem with hearing the truth from me so his customer will pay twice as much.

I PMed Fox before the sale,he didn't answer it he just sent the PM back blank.
Four Stroke Tech is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Teryx Forums: Kawasaki UTV Teryx 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:
OR

Log-in










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
 


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89