new bikeman durability kit install
- Thread starter j9845
- Start date
R
Reddragon800
Well-known member
The answer is simple........ Stop trying new kits out there. Pull out that kit and buy the proper fix kit from MNTNK. They started the kit...best one out there!!
R
Reddragon800
Well-known member
Are you serious.....
You have wosner pistons now and there not working..... and the only thing you can say is you don't like wiesco pistons. I have a group of guys up here who all run the MNTNK kit and there are no issues. You said that you cant figure out the problem... How about run pistons that work....LOL. Or not..
You have wosner pistons now and there not working..... and the only thing you can say is you don't like wiesco pistons. I have a group of guys up here who all run the MNTNK kit and there are no issues. You said that you cant figure out the problem... How about run pistons that work....LOL. Or not..
you cannot just hone the cylinder. it will not remove the imperfections.
also honing will remove the nikisil plating. the plating reducing surface friction.
you will have to get the cylinders re plated. or exchange with millenium technologies or us chrome.
also honing will remove the nikisil plating. the plating reducing surface friction.
you will have to get the cylinders re plated. or exchange with millenium technologies or us chrome.
G
geo
Well-known member
Somebody will probably say this is wrong lol. You're decision.
Buy a small diamond file and chamfer your ports (especially if you had some one try to hone without the right stuff). If you don`t know what that is take it to someone that knows nicasil in a 2 stroke.
Then,,,. Likely those lines in the cylinder are just visual (can`t feel them with a scriber-fingernail). What I do is grab a dingle ball hone that is too small, wrap a fresh maroon scotchcloth (3M only) soaked in a cheap two stroke mineral oil around it in the right way for spin and spin slowly (300 rpmish) up and down from both top and bottom.
Your not really putting a cross hatch in it but it look nice lol. I wash out the scotch cloth each time in the solvent tank and resoak in cheap two-stroke oil.
Then find a tub big enough and soak the cylinders in the hottest water you can (my shop hot water tank will burn my skin) and dump it (this preheats the aluminum). Next fill again and add a bit of degreaser detergent. I go to the trouble of using a fine wire brass brush on the nicasil while soaking in this solution. Dump, fill with plain hot water to rinse and I finish under the tap.
Immediately after the rinse I blow dry the bore a bit (most will evaporate) and take big finger fulls of my cheap blue two stroke oil and swipe the nicasil all over until it stops soaking in.
Because I`m anal about these things, I do the whole works again as many times as it takes until my scotchcloth and cheap blue 2stroke oil stay clean. Those piston coatings have good and some bad points too (looking at things microscopically lol) IMO.
I would be putting in new rings after this but probably reuse the pistons (skirt measurements required) but would pay special attention to making sure the rings lands are spotless inside. I use a magnifying glass for this.
Buy a small diamond file and chamfer your ports (especially if you had some one try to hone without the right stuff). If you don`t know what that is take it to someone that knows nicasil in a 2 stroke.
Then,,,. Likely those lines in the cylinder are just visual (can`t feel them with a scriber-fingernail). What I do is grab a dingle ball hone that is too small, wrap a fresh maroon scotchcloth (3M only) soaked in a cheap two stroke mineral oil around it in the right way for spin and spin slowly (300 rpmish) up and down from both top and bottom.
Your not really putting a cross hatch in it but it look nice lol. I wash out the scotch cloth each time in the solvent tank and resoak in cheap two-stroke oil.
Then find a tub big enough and soak the cylinders in the hottest water you can (my shop hot water tank will burn my skin) and dump it (this preheats the aluminum). Next fill again and add a bit of degreaser detergent. I go to the trouble of using a fine wire brass brush on the nicasil while soaking in this solution. Dump, fill with plain hot water to rinse and I finish under the tap.
Immediately after the rinse I blow dry the bore a bit (most will evaporate) and take big finger fulls of my cheap blue two stroke oil and swipe the nicasil all over until it stops soaking in.
Because I`m anal about these things, I do the whole works again as many times as it takes until my scotchcloth and cheap blue 2stroke oil stay clean. Those piston coatings have good and some bad points too (looking at things microscopically lol) IMO.
I would be putting in new rings after this but probably reuse the pistons (skirt measurements required) but would pay special attention to making sure the rings lands are spotless inside. I use a magnifying glass for this.
Last edited:
C
Carlos Randolph
Active member
GEO....
Love the scotch brite pad over the ball hone idea!
Feel bad for ya j9845,
Sucks as you tried to make your sled better, and its not going so hot. Beeeeen there DONE that. Rebuilt my first sled 2stroke 25yrs ago, for the most part have had good luck and some bad. Most recently back in 2011 on my 08xpx 800r. Ended up having to do the 08 twice......(feel your pain) as the base gasket failed some how and stated sucking water into the case and ate my brand new pistons/cylinders on my break in ride. 2nd time was the charm and put 2000mi on that motor prior to me selling it. Still have no idea what went wrong the first time, could have been me, could have been the renicked mono jug was messed up some how from the get go, as it was replaced for free by US Cr. Either way it sucked
Love the scotch brite pad over the ball hone idea!
Feel bad for ya j9845,
Sucks as you tried to make your sled better, and its not going so hot. Beeeeen there DONE that. Rebuilt my first sled 2stroke 25yrs ago, for the most part have had good luck and some bad. Most recently back in 2011 on my 08xpx 800r. Ended up having to do the 08 twice......(feel your pain) as the base gasket failed some how and stated sucking water into the case and ate my brand new pistons/cylinders on my break in ride. 2nd time was the charm and put 2000mi on that motor prior to me selling it. Still have no idea what went wrong the first time, could have been me, could have been the renicked mono jug was messed up some how from the get go, as it was replaced for free by US Cr. Either way it sucked
Not to derail.... but dont those pistons show waaay to much wash? Any possibility of coolant getting in there?
W
Wood
Well-known member
The pistons are probably still too new to get a good read on wash. Not enough carbon buildup...takes a bit of time.
J
j9845
Member
Thanks guys for all the feedback.
Carlos - your right it does suck. Not sure when wrong but it is what it is. In the process of getting it back together with new rings. Cylinders and pistons where still good
Shout out to Geo for answering a lot of my questions I had. He helped out a tone.
I have cleaned the cylinders up with a 3M pad. Had the chamfer on the ports checked. and set my new ring gap to .025. Ill be putting it all back together tonight/tomorrow and try to get it broke in this weekend.
In a month ill be headed out to Cooke. We'll see how she runs...
Thanks again to all that helped out.
Carlos - your right it does suck. Not sure when wrong but it is what it is. In the process of getting it back together with new rings. Cylinders and pistons where still good
Shout out to Geo for answering a lot of my questions I had. He helped out a tone.
I have cleaned the cylinders up with a 3M pad. Had the chamfer on the ports checked. and set my new ring gap to .025. Ill be putting it all back together tonight/tomorrow and try to get it broke in this weekend.
In a month ill be headed out to Cooke. We'll see how she runs...
Thanks again to all that helped out.
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