Author Topic: sleeve issue (Read 10044 times)

hontrx265r · « **on:** October 25, 2013, 01:55:42 AM »

Opened the intake to find this spun sleeve. We will see how the mfg handles the issue tomorrow and report back. Anyone else had this happen. Its a 310 kit.

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rk88r · « **Reply #1 on:** October 25, 2013, 08:28:56 AM »

Wtf causes that?

hontrx265r · « **Reply #2 on:** October 25, 2013, 09:55:54 AM »

Its not a stock cylinder but I've already considered going back to one.

F-Red · « **Reply #3 on:** October 25, 2013, 10:10:12 AM »

That does suck weiner! But if that is who, I think it might be from, give him a call. He will make it right for you. :joyous:

Jerry Hall · « **Reply #4 on:** October 25, 2013, 10:44:52 AM »

Quote from: hontrx265r;15682

Opened the intake to find this spun sleeve. We will see how the mfg handles the issue tomorrow and report back. Anyone else had this happen. Its a 310 kit. ]http://

There are only two things that will allow the sleeve to be in the position shown. It was installed that way or the interference fit was too loose. Either way.......there is no excuse for shoddy workmen ship.

I cannot see how far the sleeve has rotated. If it has rotated too much, the piston rings may be snagging in one of the transfer ports.

jcs003 · « **Reply #5 on:** October 25, 2013, 11:34:40 AM »

first vid is explanatory and a bit funny. second vid has a remedy/insurance policy on the resleeve.

http://www.youtube.com/watch?v=ghlbCaZQjDc

http://www.youtube.com/watch?v=yCSKfLarKR4

john

hontrx265r · « **Reply #6 on:** October 25, 2013, 02:13:23 PM »

Jerry I was going to bring it over to you but I'm going to give the mfg a chance to make it right. I spoke with them this morn I'm going to send it out this afternoon.

udontknowme · « **Reply #7 on:** October 26, 2013, 02:32:17 AM »

tool marks in the aluminum appear to match whats on the sleeve. im thinking it was put in that way

hontrx265r · « **Reply #8 on:** October 26, 2013, 02:58:42 PM »

I think your seeing the reflection in the sleeve. I'm 99% sure this is a fitment issue and it rotated while running. I'm right with jerry on the incorrect interference fit. Pretty sure it will arrive to them on monday so I should have some news soon.

udontknowme · « **Reply #9 on:** October 26, 2013, 03:11:18 PM »

you got the jug in your garage. what better view can you get. if the tools marks match whats on the sleeve then obviously it was installed like that. if they dont match then probly it rotated

hontrx265r · « **Reply #10 on:** October 26, 2013, 05:04:05 PM »

The tool marks on the cylinder are reflecting on the face of the sleeve, the tool marks on the edge of the sleeve match the porting on the cylinder, it rotated

udontknowme · « **Reply #11 on:** October 26, 2013, 08:44:49 PM »

i looked at it again and see what you meen. the reflection is exact opposite of the cylinder tool marks which makes perfect sense. appears to be rotated for sure.

Jerry Hall · « **Reply #12 on:** October 27, 2013, 12:56:38 AM »

Quote from: jcs003;15700

first vid is explanatory and a bit funny. second vid has a remedy/insurance policy on the resleeve.

http://www.youtube.com/watch?v=ghlbCaZQjDc

http://www.youtube.com/watch?v=yCSKfLarKR4

john

If the interference fit is correct "pinning" the sleeve is not necessary. Pinning just make sleeve removal more time consuming if the sleeve has to be removed. Pinning the sleeve will also add a stress riser in the top of the cylinder where ring seal needs to be at it's best. A stress risers may cause the bore to have a slight high spot in the bore surface when the cylinder is up to temperature but will measure perfectly when the cylinder is at room temperature.

A cylinder that has been pinned like in the video, will usually have 2 very faint brown spots on the bore to the left and right side of the high spot. The faint brown spots are blow by.

jcs003 · « **Reply #13 on:** October 27, 2013, 07:54:25 AM »

Quote from: Jerry Hall;15836

If the interference fit is correct "pinning" the sleeve is not necessary. Pinning just make sleeve removal more time consuming if the sleeve has to be removed. Pinning the sleeve will also add a stress riser in the top of the cylinder where ring seal needs to be at it's best. A stress risers may cause the bore to have a slight high spot in the bore surface when the cylinder is up to temperature but will measure perfectly when the cylinder is at room temperature.

A cylinder that has been pinned like in the video, will usually have 2 very faint brown spots on the bore to the left and right side of the high spot. The faint brown spots are blow by.

this may be true of an aluminum sleeved cylinder but in an iron or steel sleeve it will not create any localized stress unless the tapered pin forced deep into the mating surfaces. also, in an aluminum sleeve it transfers the heat at the same rate so a sleeve sliding in the bore is unlikely if the fit is per manufacturers fit tolerances.

john

hontrx265r · « **Reply #14 on:** October 27, 2013, 12:44:43 PM »

Jerry, this motor has a ka4...4 rod in it, is this the old cr250? has wide wrist pin compared to my 88 crank.