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Discussion Starter · #3 ·
im mean crankcase. this is my first sled. i thought there would have to be some kind of oil to lubicate the crankshaft, rods and bearings. if not what lubes them?
 

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Originally posted by G5301@Oct 2 2005, 01:31 PM
No oil in crankcase, it'a two stroke. The lube comes from the injector oil.
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What this means is that the oil pump for your injection oil has lines that go to the crank case to oil the bearings and the oil mixes with the fuel to lube your piston & cylinder walls after it comes from the crankcase through the transfer ports.
 

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Originally posted by chevelle ss@Oct 2 2005, 01:23 PM
im mean crankcase. this is my first sled. i thought there would have to be some kind of oil to lubicate the crankshaft, rods and bearings. if not what lubes them?
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:augen41: :Wow1:



i suggest you get a service manual and do some reading on the net of the operating principles of a 2 stroke before you really mess something up in your motor, theres some good reading out there that will help you.
 

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LOL ^^^ You have found the right site to get any info you need, as long as you don't mind a little ball busting humor thrown in to keep it entertaining.
 

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Discussion Starter · #14 ·
that ok ,i will be able to figure this snowmobile motor real fast i have built many car engines including a supercharger 800 hp big block chevy. a few 2 stroke bike pistons. i have already installed my reverse kit with just the instructions and it works great. and just put in a ods clutch kit .all this with not ever seeing under a sled hood until 1 month ago. i have a good understanding how the afi works. this is my first sled and with this site and alittle time i will be-able to do all of it myself. i was just guessing that there was some kind of oil in the crank my 2 stroke bike did ,but that had tranny gears.snowmobile dont. i also understand now how the crank and bearing get lubicated through the injection pump thanks to the kind person who answered my question with out a smart remark about my mec skills now im putting new pistions in because the scratches in the piston skirts are more than fingernail deep. and taking the pistons out was a very simple job
 

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your two stroke bike did not have oil in the crankcase that lubed the crankshaft, it had oil in the tranny part of the cases which is completley sealed from the crankshaft area and cumbustion area of the motor.
 

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On your bike, the tranny case with all the gears were seperate then the engine crank case. The tranny lube did not go into the crank case.

On your sled, the oil is injected somewhere between the carb or EFI body and the engine. So the oil will mix with the gas and lube all the bearings in the crank case before it gets to the pistons and cylinders.

I'm a little slow with the reply
 

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Originally posted by chevelle ss@Oct 2 2005, 07:03 PM
that ok ,i will be able to figure this snowmobile motor real fast i have built many car engines including  a supercharger 800 hp big block chevy. a few 2 stroke bike pistons. i have already installed my reverse kit with just the instructions and it works great. and just put in a ods clutch kit .all this with not ever seeing under a sled hood until 1 month ago.  i have a good understanding how the afi works. this is my first sled and with this site and alittle time i will be-able to do all of it myself. i was just guessing that there was some kind of oil in the crank my 2 stroke bike did ,but that had tranny gears.snowmobile dont. i also understand now how the crank and bearing get lubicated through the injection pump thanks to the kind person who answered my question with out a smart remark about my mec skills now im putting new pistions in because the scratches in the piston skirts are more than fingernail deep. and taking the pistons out was a very simple job
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Originally posted by chevelle ss@Oct 2 2005, 07:34 PM
thanks. this site has alot of great info.
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Sounds like you dove right in and your getting it figured out.... :div20:
This site is a great source of info.. But you do have to deal with us smart-asses.. lol
 

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chevelle ss, its all in fun. I was the same way when i started wrenchin on my sled I have built supercharged motors for my mustang drag car. Everyone on this site is anxious waitin for the snow to fly which makes for wise aZZ comments. don't take it seriously just entertaining ourselves waitin for snow. Welcome to HCS you'll enjoy this site careful though it is ADDICTIVE!! :div20:
 
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