wiseco or standard? - Page 2 - Snowmobile Forum: Your #1 Snowmobile Forum
View Poll Results: Wiseco or Stock pistons
Wiseco 9 37.50%
Stock 15 62.50%
Voters: 24. You may not vote on this poll

User Tag List

Reply
 
LinkBack Thread Tools Display Modes
post #21 of 29 (permalink) Old 11-27-2011, 04:53 AM
Sledaholic
 
MaineSled's Avatar
 
Join Date: Dec 2009
Location: Franklin County, Maine
Posts: 135
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
While SPI & Standard or coated pistons are fine...you'll be hard pressed to beat a set of Wiesco if you properly warm up your motor till the heat exchangers are warm like your supposed to.

***Another reason why I choose Wiesco is I been using them for over 30 years and am comfortable with a "known" product but in all fairness materials & coatings have come a long ways over the years so I'm sure the newer stuff has come a long way and are most likely comparable.
MaineSled is offline  
Sponsored Links
Advertisement
 
post #22 of 29 (permalink) Old 11-27-2011, 11:42 AM
Rick
 
indyryder500's Avatar
 
Join Date: Jan 2010
Location: Upper Michigan
Posts: 3,070
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
yeah Wiesco has come a long way in the last few years also.

97 ultra spx slp can geared clutch and 144 studs.(mine)
96 XLT studded with reverse(12y/o son)
98 xcf 440 (wifes sled)
96 puma 340 elec start(kids sled)
96 cougar 550 2up bone stock (sold)
96 XCR 440 clutched (sold)
92 indy 500 bored,clutched. piped(sold)
85 indy 400 (11 y/o son's sled)(sold)
87 yamaha excel 340 (parting out)(sold)


2011/2012 miles :00000000
indyryder500 is offline  
post #23 of 29 (permalink) Old 11-28-2011, 01:03 AM
Registered User
 
aduck's Avatar
 
Join Date: Feb 2010
Location: northern il
Posts: 3,717
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
every motor i open up gets wisecos. like said before as long as you let em get to operating temp youll have no issues which you should do either way.

93 mach1 670
02 rmk 800 162
95 powder special 580
aduck is offline  
post #24 of 29 (permalink) Old 11-28-2011, 01:38 AM
-LIFETIME MEMBER-
 
musicfreako's Avatar
 
Join Date: Dec 2009
Location: Allegan, MI
Posts: 347
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Oh I like weisco's. I put them in my Camaro, quad and lawn mower. But in a Snowmobile, they're too temperamental. I always let my stuff warm up, but there's too many variables in snowmobiling.

The only cat I'll ever own will have a track and not require a litter box

Current rides

98 ZR600 EFI (03 zr900 skid, reverse, fox shocks, clutched)
97 Polaris Indy 500 (stock)
91 El tigre EXT 530 (01 Zr skid, clutched, MINT)
94 Polaris Indy trail deluxe (very heavy!)

New rides
90 El tiger EXT 530
98 Zr 600 Carb
00 Zr 600 EFI (trophy winner in the 700 class drag races)
musicfreako is offline  
post #25 of 29 (permalink) Old 11-28-2011, 03:01 AM
Registered User
 
aduck's Avatar
 
Join Date: Feb 2010
Location: northern il
Posts: 3,717
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
ive never had any issues to date with em.

93 mach1 670
02 rmk 800 162
95 powder special 580
aduck is offline  
post #26 of 29 (permalink) Old 11-28-2011, 10:30 AM
Registered User
 
Join Date: Dec 2010
Location: Hambden Twp, Oh
Posts: 351
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Used Weisco on a couple of my bikes and was happy with the gains but in a 2 stroke snowmobile the stock pistons or SPI work great and are not as particular as the Weisco.

94 Polaris XLT - XTRA 10, Ski Skins, 3" riser
97 Polaris Ultra
96 Ski Doo Formula III 600 (sold)
97 Polaris XLT Limited - XTRA 12 (My Son's)
80 Kawasaki Intruder (sold)
72 Polaris 340 Colt SS (sold)
Skid is offline  
post #27 of 29 (permalink) Old 11-08-2012, 04:13 PM
Registered User
 
Join Date: Mar 2008
Posts: 28
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Where would you buy your pistons

Hello im still fretting on this one, two years ago I purchased 3 SPI moly coated piston kit off of e-bay, the rebuild occurred on a 1998 Polaris Ultra at 3000 miles and its been 400 miles since and the rings havent even seated yet, the compression still sits at 110 psi across the board, the cylinders were not glazed on inspection, Im wondering if thats what is happening, atleast I wasn't concerned about the quality of the SPI piston being purchased from e-bay at the time, could they have been misfits? The likely hood of being the only one having this issue is likely low I dont want to incriminate but I might have to call up the shop that sold me the pistons, as the mechanic who rebuilt states SPI is as reputeable as he is LOL, hes my Uncle so I could never fault his expert way. Where would you buy your engine parts?

racing_kidd
racing_kidd is offline  
post #28 of 29 (permalink) Old 11-08-2012, 05:16 PM
Registered User
 
Old Man's Avatar
 
Join Date: Dec 2007
Location: Dinorwic Lake, Ontario
Posts: 456
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
@racing kidd - Are you doing your compression test with all the plugs out, throttle held wide open and pulling it over at least 5 to 6 times or cranking it until the needle stops moving? Have you tried using a different compression tester? Just a couple of thoughts before assuming the worst.
Old Man is offline  
post #29 of 29 (permalink) Old 11-14-2012, 01:07 AM
Registered User
 
rcslsafut's Avatar
 
Join Date: Nov 2010
Location: utah
Posts: 315
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by 69CRUZR View Post
depends on the engine type. If the engine is a cast iron sleeved cylinder I would not run the Wisecos. If it is a nicasil (spelling?) coated aluminum bore then I would not worry about it. Aluminum heats up and expands MUCH faster than iron, and the cold seize syndrome is way more common in those engines, where a guy starts it lets it idle long enough it wont die when he slams the gas, and goes screaming wide open across a field. The pistons expand faster than the bore and it seizes up!

With the nicasil coated bore the metals used in both the bore and piston are certain alloys of aluminum, and will have a much more similar expansion rate, I chose Wiseco for my Liberty 600 after lots of debate about this exact same topic.
i totally agree !!!
rcslsafut 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