Guest Posted May 18, 2008 Share Posted May 18, 2008 you are welcome mate Link to comment Share on other sites More sharing options...
Guest nigelf Posted May 18, 2008 Share Posted May 18, 2008 Im probably wrong but the crank is part of the induction system so the fuel/oil mix goes down there...http://science.howstuffworks.com/two-stroke1.htmhave a looksy here!I did think the reed valve may have gone stopping the induction or compression drawing in the fuel...(or oil)Nigel Link to comment Share on other sites More sharing options...
Philk Posted May 18, 2008 Share Posted May 18, 2008 Yes hats off mate ballsy taking her down and having a go. Link to comment Share on other sites More sharing options...
softwarez Posted May 18, 2008 Author Share Posted May 18, 2008 Cheers guys! Right.. Just did a few odd bits today.. Spraying discoloured nuts n bolts etc.. lol! Had some time to waste. I was wondering.. I had a look in the repair manual and I couldnt find any information on what to do when replacing the cylinder and piston. What i mean by that is (I can fit it all etc, no problems) just.. Should i dab any special all around the parts before hand? Put afew drops of anything on the con-rod, cylinder etc etc? Im not sure.. Maybe i should just syringe afew drops of 2stroke in there? Ideas guys? Cheers.(Tomorrows the big day!)Edit: Remember i emptied all the oil out? (Not sure which part of the engine it is called..) But it has the dipstick and is at the very bottom...I'm not sure what oil to put back in.. Any ideas? Here is a image i have from the manual. Thanks. http://img150.imageshack.us/img150/2804/oilad7.jpg Link to comment Share on other sites More sharing options...
Voodoo Posted May 18, 2008 Share Posted May 18, 2008 5w 40 Link to comment Share on other sites More sharing options...
DutchMick Posted May 18, 2008 Share Posted May 18, 2008 this one moveshttp://www.keveney.com/twostroke.html Link to comment Share on other sites More sharing options...
softwarez Posted May 18, 2008 Author Share Posted May 18, 2008 5w 40 Ah, great stuff, thought so ! So it has to be 4 stroke right? Confusing since a two stroke bike... What is the reason for this? Cheers.The moving diagram is nice also, thx Edit: I have even more confusion now! I just looked at the Cagiva Planet Manual and it shows the Piston as having 2 Rings?? Both 91 version and 2001 version. Im confused as the piston i took out had only one ring? Link to comment Share on other sites More sharing options...
Voodoo Posted May 18, 2008 Share Posted May 18, 2008 5w 40 Ah, great stuff, thought so ! So it has to be 4 stroke right? Confusing since a two stroke bike... What is the reason for this? Cheers.The moving diagram is nice also, thx Edit: I have even more confusion now! I just looked at the Cagiva Planet Manual and it shows the Piston as having 2 Rings?? Both 91 version and 2001 version. Im confused as the piston i took out had only one ring? The two stroke oil is only for mixing with the petrol and it helps lubricate the piston. The rest of the engine, crank, gearbox etc... use four stroke oil.As for piston rings, well as long as you've ordered the right kit for your bike and year, then you'll be able to tell how many! Link to comment Share on other sites More sharing options...
softwarez Posted May 18, 2008 Author Share Posted May 18, 2008 5w 40 Ah, great stuff, thought so ! So it has to be 4 stroke right? Confusing since a two stroke bike... What is the reason for this? Cheers.The moving diagram is nice also, thx Edit: I have even more confusion now! I just looked at the Cagiva Planet Manual and it shows the Piston as having 2 Rings?? Both 91 version and 2001 version. Im confused as the piston i took out had only one ring? The two stroke oil is only for mixing with the petrol and it helps lubricate the piston. The rest of the engine, crank, gearbox etc... use four stroke oil.As for piston rings, well as long as you've ordered the right kit for your bike and year, then you'll be able to tell how many! Yeah.. the only thing is I have already ordered the Flat top with 1 ring. As that is what i took out of the bike.. So i figured it goes back in! lol.. But all this two ring etc etc is getting me slightly nervous Hmmm.. Link to comment Share on other sites More sharing options...
Voodoo Posted May 18, 2008 Share Posted May 18, 2008 Must admit, personally I always thought there were two rings on pistons. Link to comment Share on other sites More sharing options...
softwarez Posted May 18, 2008 Author Share Posted May 18, 2008 Flat: (1 ring)http://www.pjme.co.uk/acatalog/CAGIVA%20MITO%20MITAKA%20CYLINDER%20KIT%20FLAT%20TOP.jpgDome: (2 ring)http://www.pjme.co.uk/acatalog/CAGIVA%20MITO%20MITAKA%20CYLINDER%20DOME%20TOP.jpgTheres one with two (domed) and 1 (flat) the one i took out of my bike is flat with 1 ring.I've read claims that one Pin has less drag than two, hence slightly increasing RPM at lower revs..? Link to comment Share on other sites More sharing options...
Guest Posted May 18, 2008 Share Posted May 18, 2008 go for the 1 ring Link to comment Share on other sites More sharing options...
softwarez Posted May 18, 2008 Author Share Posted May 18, 2008 go for the 1 ring yeah, i thought since a 1 pin came out.. I might as well buy a 1 pin to go back in! So it will be here tomorrow... Cant wait to see the results! Hope it works Link to comment Share on other sites More sharing options...
Voodoo Posted May 18, 2008 Share Posted May 18, 2008 But have you sorted out your barrel yet, or do you get a new one in the kit? Link to comment Share on other sites More sharing options...
softwarez Posted May 18, 2008 Author Share Posted May 18, 2008 Yes it includes the barrel.. piston.. rings.. gaskets.. the bearing for the top of the conrod.. So its like a full top end rebuild (i think thats what its called)Okay, I have a few questions before i crack on tomorrow! 1. Conrod area how is this lubricated? via 2stroke or shares the engine/transmission 4stroke 5w-40?2. Should i carefully lubricate 2stroke onto the cylinder walls and piston (lightly with my finger)Really appreciate this guys!! Link to comment Share on other sites More sharing options...
Guest Posted May 18, 2008 Share Posted May 18, 2008 Yes it includes the barrel.. piston.. rings.. gaskets.. the bearing for the top of the conrod.. So its like a full top end rebuild (i think thats what its called)Okay, I have a few questions before i crack on tomorrow! 1. Conrod area how is this lubricated? via 2stroke or shares the engine/transmission 4stroke 5w-40?2. Should i carefully lubricate 2stroke onto the cylinder walls and piston (lightly with my finger)Really appreciate this guys!! can you get 5w-40 if so yes it will work Link to comment Share on other sites More sharing options...
Voodoo Posted May 18, 2008 Share Posted May 18, 2008 Yeah, thats what I would do1. Conrod area lubricate with engine/transmission 4stroke 5w-402. 2 stroke onto the cylinder walls and piston (lightly with my finger) Link to comment Share on other sites More sharing options...
softwarez Posted May 18, 2008 Author Share Posted May 18, 2008 Great stuff guys, Cheers! Dont know what i would do without ya Gonna get some sleep and have a go at it tomorrow when the rebuilt kit arrives. Cheers! How much should i lubricate the Conrod area? I.E before i put the cylinder ontop etc. Should i do it lightly with my finger also or..? (I'll check back in the morning, thx mate ) Link to comment Share on other sites More sharing options...
Voodoo Posted May 18, 2008 Share Posted May 18, 2008 Not really sure, I guess the engine will lubricate it once its going so perhaps just a bit with your finger will be okay, then again even if you drowned it in oil it 'probably' wouldn't do any harm. Link to comment Share on other sites More sharing options...
Guest Posted May 19, 2008 Share Posted May 19, 2008 I can hardly wait for this Link to comment Share on other sites More sharing options...
Guest Posted May 19, 2008 Share Posted May 19, 2008 Not really sure, I guess the engine will lubricate it once its going so perhaps just a bit with your finger will be okay, then again even if you drowned it in oil it 'probably' wouldn't do any harm.no not really Link to comment Share on other sites More sharing options...
softwarez Posted May 19, 2008 Author Share Posted May 19, 2008 Okay, I need to buy some 4 stroke 5w-40 today to fill the bike back up with! now.. Im a little confused.. is 4 stroke the same as 'normal' oil, aka the stuff i would use in a car? or is it very specific like the 2 stroke is? Thanks. Link to comment Share on other sites More sharing options...
Guest Posted May 19, 2008 Share Posted May 19, 2008 4 stroke the same as 'normal' oil,is it for the pistonget 5w-40 oil not 4 stroke Link to comment Share on other sites More sharing options...
Voodoo Posted May 19, 2008 Share Posted May 19, 2008 Don't listen to Johns, he's been popping pills again!5w 40 is 4 stroke oil, just like what you put in your car. Two stroke oil that gets mixed with your petrol is probably a lot thinner. Link to comment Share on other sites More sharing options...
Guest Posted May 19, 2008 Share Posted May 19, 2008 Don't listen to voodoo i know bikes i know what you are working with i have donw it so Link to comment Share on other sites More sharing options...
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