Long time! I like what youve done to the place!

General topics related to John Deere Snowmobiles
wycrumb
Posts: 290
Joined: Thu Nov 06, 2008 1:00 am
Location: Fargo ND

Long time! I like what youve done to the place!

Post by wycrumb »

Want to really make that thing go? Put on dual Mikunis like my 600 has, the are flange style, round slide, 25mm I believe and have been told they are off of a Polaris. It runs great and I hit 65mph with that big sled in ideal conditions this year. They bolt right up and I have not fouled a plug yet, Took it 72 miles this weekend trouble free.
Here is a pic

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Wycrumb

'09 John Deere Snow-Mower SM440
'96 Lifted Utility Club Car Carryall II
'82 Kawasaki KZ650 CSR
'74 John Deere 300
'72 John Deere 400
'73 John Deere 400
'73 John Deere 600
'79 John Deere Trailfire 340/440
'80 John Deere Sportfire 440
KennyH
Posts: 29
Joined: Mon Apr 09, 2007 12:00 am

Long time! I like what youve done to the place!

Post by KennyH »

wycrumb wrote:Want to really make that thing go? Put on dual Mikunis like my 600 has, the are flange style, round slide, 25mm I believe and have been told they are off of a Polaris. It runs great and I hit 65mph with that big sled in ideal conditions this year. They bolt right up and I have not fouled a plug yet, Took it 72 miles this weekend trouble free.
Here is a pic
wycrumb,
That was going to be my next step! Dual carbs that is, I have a set of 32mm's (I think) but they are spigot mounted and need to find a set of the rubber mounts for them, then a dual outlet fuel pump and I'll be set!!!
This has been one of my favorite projects! It don't need to be pretty and I'm learning a few things about sleds!
Later,
Kenny
KennyH
Posts: 29
Joined: Mon Apr 09, 2007 12:00 am

Long time! I like what youve done to the place!

Post by KennyH »

I got the bad cylinder off today and it wasn't as bad as I thought it was going to be. Still bad though!


ICCSF 108, are both the replacement pistons the same or do they have a specific side? the bad one on mine is the recoil side. the pto side looks good.

Again,

THANKS FOR THE HELP!!!!
Later,
Kenny

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Last edited by KennyH on Sun Mar 22, 2009 10:18 pm, edited 1 time in total.
ICCSF 108
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Joined: Sun Jul 17, 2005 12:00 am
Real Name: Kenny Heins, AKA Grumpy
Location: Blue Springs Mo.
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Long time! I like what youve done to the place!

Post by ICCSF 108 »

KennyH, They are both the same..

Kenny
AKA: Kenny, Grumpy, Mr. Richard Head
"I Hunt For it, Purchase it, Haul it, Sometimes Repair it, Sometimes Break it, Then Fix it Again, Label it, Warehouse it, Talk About it, So NOW, HOW Can I Take Any Less $$ For It?"
"God I love the smell of KLOTZ in the morning, That smell, you know that Gasoline/Oil Smell, MAKES the whole place SMELL like.. LIKE VICTORY. You know someday the 2 strokers are gonna end..."
Do Anti-War Protesters have reunions? If so what do they TALK about?
KennyH
Posts: 29
Joined: Mon Apr 09, 2007 12:00 am

Long time! I like what youve done to the place!

Post by KennyH »

Thanks Kenny!
How do I go about getting the Aluminum off from the cylinder walls? Lightly scrape it with something? I've been told to use "The Works" toilet bowl cleaner, but how? Just put it on the aluminum with a Q-Tip?
The piston measured at 2.668 inches or 67.7672 mm's, so they must be standard bore, correct?
Again, Thanks for the help!
Later,
Kenny
KennyH
Posts: 29
Joined: Mon Apr 09, 2007 12:00 am

Long time! I like what youve done to the place!

Post by KennyH »

jdmatt wrote:No after market pistons available. ICCSF's would be the best bet, but I've been told that Rotax 440 F/A 20 over pistons will work, but I haven't had any one confirm that.
I did some checking into the 440 Rotax pistons. Found one guy from another site that had some but they are REAL EXPENSIVE!!! Kind of cost prohibitive for my application. $160.00 A PISTON! Those Ski Doo guys must have all the money!
Later,
Kenny
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