Author Topic: WTF?? three torched pistons (Read 32354 times)

rjt500r · « **Reply #60 on:** July 23, 2014, 03:05:57 PM »

Quote from: KASEY;39672

if that had that severe of an air leak,, refer back to my original post please,

Judging by your helpful, informative and positive replies, you must be the pride and joy at your professional position, at the suicide prevention hotline !

KASEY · « **Reply #61 on:** July 23, 2014, 08:05:04 PM »

well I did stay at a holiday inn last night... as jerry hall said.. LISTEN you can hear way more than you can feel. I have been running 2 stroke engines 45 years and I have never burned a hole in a piston of any kind,, because I learned from my grampa a long time ago to listen to the song of the motor,, it tells you everything.. it may sound funny to you kids,,, and you can say all you want ,,, it works for me...

Bio86 · « **Reply #62 on:** July 23, 2014, 08:16:04 PM »

Wonder if its going into an overly lean condition when you're mid to full throttle cruising. Sure be nice to have a pyrometer and wideband o2 sensor to log what is going on during the failure.

hontrx265r · « **Reply #63 on:** July 23, 2014, 09:51:49 PM »

I have a data logger with wideband o2 and extra analog for tps, or egt or any analog signal I'd sell it for 250.00 never been used. Think it runs 400.00 new.

rjt500r · « **Reply #64 on:** July 24, 2014, 07:42:29 AM »

Quote from: KASEY;39713

well I did stay at a holiday inn last night... as jerry hall said.. LISTEN you can hear way more than you can feel. I have been running 2 stroke engines 45 years and I have never burned a hole in a piston of any kind,, because I learned from my grampa a long time ago to listen to the song of the motor,, it tells you everything.. it may sound funny to you kids,,, and you can say all you want ,,, it works for me...

We can go back and forth for days about this, 100 more people can post here and tell me the motor is telling you there is a problem. I too have been riding two strokes for over twenty years i have a garage full of them. I have never had this problem with any of them. I have had engines with air leaks, i have had motors that ran lean and yes i could tell that there is a problem. This engine is not doing that!! Hence the reason for my post. Thanks to all that contributed , i will figure it out i always do.

muthahucker · « **Reply #65 on:** July 24, 2014, 08:54:16 AM »

You posted pics of your ignition, the first pic im assuming is your CDI? That doesnt look like an OEM CDI.. Id toss that thing and get an OEM replacement.

pinned250r · « **Reply #66 on:** July 24, 2014, 10:06:46 AM »

Quote from: muthahucker;39752

You posted pics of your ignition, the first pic im assuming is your CDI? That doesnt look like an OEM CDI.. Id toss that thing and get an OEM replacement.

I thought so too. I just didn't want to sound dumb if I was wrong.

muthahucker · « **Reply #67 on:** July 24, 2014, 10:52:18 AM »

Ive never seen markings like that on an OEM CDI. You will never get consistant readings while trouble shooting the engine if your using an aftermarket garbage CDI.

rjt500r · « **Reply #68 on:** July 24, 2014, 12:59:50 PM »

Quote from: muthahucker;39765

Ive never seen markings like that on an OEM CDI. You will never get consistant reads while trouble shooting the engine if your using an aftermarket garbage CDI.

The CDI was mentioned, i have already got a replacement for it, thanks

mx250r91 · « **Reply #69 on:** July 24, 2014, 03:07:11 PM »

That is an OEM CDI, Shindengen is who manufactures them for Honda. Is it for sure a 250R CDI? Should have either HA2 or HB9 on the other side. I think the 400EX CDI is about the same size and has the same connectors...

rjt500r · « **Reply #70 on:** July 25, 2014, 07:35:57 AM »

Quote from: mx250r91;39781

That is an OEM CDI, Shindengen is who manufactures them for Honda. Is it for sure a 250R CDI? Should have either HA2 or HB9 on the other side. I think the 400EX CDI is about the same size and has the same connectors...

And there it is !! This cdi was on one of three 250r's that i bought, plugged into the harness like it belonged there. I put it on this bike, never checking that it could be something other than a 250r cdi. The number is KKO CL-77, turns out it's for a XL200. Thanks

pinned250r · « **Reply #71 on:** July 25, 2014, 08:07:36 AM »

And there's the holes in your pistons... Glad you figured it out!

Bio86 · « **Reply #72 on:** July 25, 2014, 10:52:33 AM »

All you have to do is swap an XL200 motor in and you're all set!

Jerry Hall · « **Reply #73 on:** July 25, 2014, 11:44:46 AM »

Using a timing light after the first piston failure would have instantly found the problem and prevented the audible hole drilling detonation on the 2nd and 3rd piston.

Rupp250 · « **Reply #74 on:** July 25, 2014, 01:20:15 PM »

Glad you figured it out.