XLT sleeper - Snowmobile Forum: Your #1 Snowmobile Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 14 (permalink) Old 01-04-2009, 05:19 PM Thread Starter
Registered User
 
Join Date: Dec 2008
Location: Lloydminster AB
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
XLT sleeper

I was wondering if i could use my stock components, clutch,and carbs and igniton to bolt up to a 680 ultra case reed motor?
TATE is offline  
Sponsored Links
Advertisement
 
post #2 of 14 (permalink) Old 01-05-2009, 09:48 AM
Keep On!!!!
 
blackgmc99's Avatar
 
Join Date: Dec 2008
Location: Maine
Posts: 24
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Everything should work but the ignition. your carbs might might be a bit small tho depending what xlt they came off. I just did the same project but I had a complete donor ultra. Still working the kinks out but I think its gonna be quite the sleeper.
blackgmc99 is offline  
post #3 of 14 (permalink) Old 01-07-2009, 08:24 PM Thread Starter
Registered User
 
Join Date: Dec 2008
Location: Lloydminster AB
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
My carbs i have now i believe are the 34mm ACCS carbs so it hopefully should change my jetting to the bigger engine. But you wouldnt know what the diference is on the ignitions would you?
TATE is offline  
post #4 of 14 (permalink) Old 01-08-2009, 03:29 PM
Registered User
 
ridgerunner's Avatar
 
Join Date: Feb 2008
Location: Gorham, ME
Posts: 1,196
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
xlt has single cdi box, ultra has 3 individual.... probably more diff. than that, but just swap whole ultra assembly, carbs, clutch, cdi, etc. make it easier on yourself for tuning.
ridgerunner is offline  
post #5 of 14 (permalink) Old 01-13-2009, 06:39 PM
Registered User
 
Join Date: Jan 2009
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Question 1995 XLT xtra 12 bad crank - have a Ultra donor sled!

I have a very nice 95 XLT SP xtra 12 133.5 out of alaska. motor is now bad, and I have the option to grab a complete running 1996 Ultra SP! PLease tell this would be a drop in replacement?? Would the cooling lines be effected? they look like the ultra has a cooling line through the brakes? If I wanted a quick swap can I ignore this?
middlman is offline  
post #6 of 14 (permalink) Old 01-14-2009, 10:39 AM
Registered User
 
ridgerunner's Avatar
 
Join Date: Feb 2008
Location: Gorham, ME
Posts: 1,196
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
blackgmc99 did exactly that on his 96 ultra sp into a 97 xlt sp. its a direct swap if you use the ultra carbs, cdi, and exhaust. the cooling lines are a little different cause the ultra has cooled brakes and the xlt doesn't. if you use the xlt overflow bottle there should be an extra line on the bottom that will have to be blocked off. his sled works great, and has tuns of low-end power because the xlt is geared lower than the ultra.... he did the swap himself, so i know he can answer questions about what colant line goes where. all i know is it has to be a sealed loop, but yeah, slight modification and it goes right in.
ridgerunner is offline  
post #7 of 14 (permalink) Old 01-14-2009, 10:59 AM
Registered User
 
Join Date: Dec 2007
Posts: 15
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
could the slp tripple pipes from the monoblock motor be used with the 680 ultra swap, this is something i have also been thinking about due to reliabily problems with my monoblock. i want to do this but cant justify spending 700 on pipes to get the ultra motor to run better than my xlt motor. But if i can use my 600 xlt pipes i would probably do this conversion. Also, would to 800xcr motor go in a wedge chassis? That would be even better.
2000psdbio is offline  
post #8 of 14 (permalink) Old 01-14-2009, 11:20 PM
Registered User
 
ridgerunner's Avatar
 
Join Date: Feb 2008
Location: Gorham, ME
Posts: 1,196
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
the pipes from the xlt monoblock are different than those that would be needed for the ultra motor. i would say, if you want to do this swap and have triples for a monoblock, sell them on ebay and buy some good used ones. from everything i have read, when the agressive chassis was released, all 3 (xcr 600, ultra, storm/xcr 800) had engines based on the same '96 ultra 680 case-reed engine, just different top-ends for different displacement. i have wondered the same thing (800 trip. into a wedge), but i haven't seen both engines side by side. so i don't know if there is a different bolt pattern on the case-reed triples in the agressive chassis v. those in the wedge, or if polaris used the same base with just different motor mount plates. the theory is there, but then there could be a problem finding pipes for the 800 trip. into a wedge chassis.
ridgerunner is offline  
post #9 of 14 (permalink) Old 01-18-2009, 06:25 PM
Registered User
 
ridgerunner's Avatar
 
Join Date: Feb 2008
Location: Gorham, ME
Posts: 1,196
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
ultra 680 in a xlt

he is what has been found so far by the guy that actually performed this swap (blackgmc99). he used the ultra 680 engine, clutch, coils, carbs, exhaust, mounting plates, and belt. the engine is pretty much a drop in system, used the air box from the xlt (only if an sp w/ 38mm carbs) and the ultra's cables for the choke and throttle. the engine sits back slightly once its in the sled, so the belt from the ultra is used. the only semi-issue found (so far) is the cooling system. the 680 case reed and the xlt mono-block have different cooling attachment points and hose sizes. just make a closed, sealed loop. with the testing done so far, the xlt coolers have been plenty.

in the sled


xlt monoblock


in the second picture you can see how the cooling system was attached on the monoblock. this pretty much just got reattached to the ultra engine.
ridgerunner is offline  
post #10 of 14 (permalink) Old 01-19-2009, 12:59 AM
Registered User
 
Join Date: Dec 2007
Posts: 15
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The only thing i have noticed is the carbs on the ultra mount lower than on the monoblock motor. But both sleds can use the 38mm roundslide mukini carbs. So it seems that since both sleds were built in the wedge body style that there would be plently of room for the ultra motor with 38mm roundslide carbs to fit into a wegde chassis. I guess thats why you use the ultra mounts. It leaves room for the carbs on the xlt/xcr. You wouldnt nessesarly need the clutch from the ultra just the belt. since all polaris' use the same clutch. Now i think i just need to find a ultra motor with pipes to do my swap...it sounds fairly strait forward.
2000psdbio is offline  
post #11 of 14 (permalink) Old 11-19-2012, 11:56 AM
Registered User
 
Join Date: Nov 2012
Location: Ontario, Canada
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by ridgerunner View Post
he is what has been found so far by the guy that actually performed this swap (blackgmc99). he used the ultra 680 engine, clutch, coils, carbs, exhaust, mounting plates, and belt. the engine is pretty much a drop in system, used the air box from the xlt (only if an sp w/ 38mm carbs) and the ultra's cables for the choke and throttle. the engine sits back slightly once its in the sled, so the belt from the ultra is used. the only semi-issue found (so far) is the cooling system. the 680 case reed and the xlt mono-block have different cooling attachment points and hose sizes. just make a closed, sealed loop. with the testing done so far, the xlt coolers have been plenty.

in the sled


xlt monoblock


in the second picture you can see how the cooling system was attached on the monoblock. this pretty much just got reattached to the ultra engine.
i was wondering if you could send me the pictures of the secong picture of the cooling system on the monoblock on the ultra engine (the picture no longer appears in the thread). I am currently working on the same project and would appreciate some help! Thank you.
polaris1977 is offline  
post #12 of 14 (permalink) Old 11-19-2012, 03:36 PM
Super Moderator
 
BC_Dan's Avatar
 
Join Date: Jan 2004
Location: oregon
Posts: 13,511
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
You may want to message ridgerunner, he may not be following a thread this old...

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 #13 of 14 (permalink) Old 11-19-2012, 05:37 PM
Registered User
 
ridgerunner's Avatar
 
Join Date: Feb 2008
Location: Gorham, ME
Posts: 1,196
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
I don't have any photos of the sled on my computer anymore, and the sled is actually running the XLT motor again. The ultra engine died (not related to the install). I attached photos show the cooling loop of both sleds.

ultra
http://www.polarispartshouse.com/oem...tra-sp-e960678

xlt
http://www.polarispartshouse.com/oem...-system-xlt-sp

If you are able to use the ultra hoses it will make the whole process easier....

Last edited by ridgerunner; 11-19-2012 at 05:38 PM. Reason: stupid photos didn't post...
ridgerunner is offline  
post #14 of 14 (permalink) Old 11-19-2012, 06:47 PM
Registered User
 
Join Date: Nov 2012
Location: Ontario, Canada
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks. Unfortunately I only have the xlt hoses. Did you use the xlt reservoir and if so, how did you adapt it to the ultra engine? The xlt reservoir has smaller hoses and different configuration. I also asse that I need to add a filler cap somewhere along the line....
polaris1977 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:
OR

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