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Post by Jarhead ☠on Jul 13, 2020 21:59:10 GMT -5
So it appears that one of the c-clips came out and did a fair amount of damage to the piston but thankfully not the cylinder 🙄 I went and bit the bullet and paid $91(tax&shipping) for the feebay nos piston and I'm going to hone the cylinder. It came with rings but I ordered 2 from Leon JIC, I'm a hack with rings. Hey it's only money and I can't take it with me!   |
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Post by sweepleader on Jul 13, 2020 23:16:06 GMT -5
Gently with the rings and you will have a spare set for many years.
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Post by Jarhead ☠on Jul 14, 2020 0:03:01 GMT -5
I really am a Mongo when it comes to rings.  |
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Post by tjthechainsawmech on Jul 14, 2020 0:12:35 GMT -5
Yikes! I've seen damage from that happening here and there. Does a nasty job for sure. Glad you were able to source parts quickly though.
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Post by Jarhead ☠on Jul 14, 2020 17:25:28 GMT -5
So I flushed out the crankcase and kept an eye out for any debris from the c-clip but nothing was found. I soaked the bearings with oil hoping to coax anything out but again nothing and the bearings are running smooth so hopefully it was pulverized and passed. This is the worst it has.  |
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Post by Jarhead ☠on Jul 20, 2020 18:09:02 GMT -5
So I installed the new piston but need to wait on the flex-hone this week. I scuffed the cylinder and it appears that it has good compression so hopefully it'll be better after the honing. Can I scuff the exhaust ports lightly to clean them up?   |
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Post by Jarhead ☠on Jul 22, 2020 18:21:42 GMT -5
Freshly honed cylinder!  |
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Post by edju1958 on Jul 22, 2020 19:51:31 GMT -5
Looks good!
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Post by Jarhead ☠on Jul 23, 2020 10:23:22 GMT -5
CRAP!
So I took care to oil the piston and cylinder prior to reassembly, I honed the cylinder and buffed the exhaust ports and used the proper tools to mount the cylinder and I still have two scratches on the piston. I checked everything out and made sure everything was smooth.
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Post by edju1958 on Jul 23, 2020 10:59:30 GMT -5
Would it have been possible thatthe C clip got stuck to the top of the cylinder & you didn't catch it?I've seen this with needle bearings on both an XL-400 & an SEZ.
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Post by Jarhead ☠on Jul 25, 2020 14:21:27 GMT -5
No I unfortunately didn't notice a small piece of carbon from the exhaust port.
I had to remove 1/2 of the protective coating from around the coil due to it being damaged by heat. I cut it out cleaned with alcohol and reapplied some high temp silicon to protect it from heat and moisture.
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