Im guessing this is bad right?
06-17-2007, 07:43 AM
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Im guessing this is bad right?
I was doing some maintenance and changing clutch shoes when I came accross this. As far as I know compression is still very good ill be running it later today, but im guessing its not supposed to have this score down the side of the piston is it.
As for the sleeve you can barely make out where the score started from, but I cant feel any scratch. Its also strange the score apears to be square so if anything caused it it was a piece of sand.
As for the sleeve you can barely make out where the score started from, but I cant feel any scratch. Its also strange the score apears to be square so if anything caused it it was a piece of sand.
06-17-2007, 04:47 PM
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RE: Im guessing this is bad right?
That is very blurry. I unfortunately cant make out a think. Can you try to retake the pics and post them again?
06-18-2007, 04:23 PM
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RE: Im guessing this is bad right?
Unfortunatly that was a pic using the macro switch. My camera is prob 5 years old which in normal camera terms isnt much but it is for digital cameras. I stuck it all back together and its running so im not going to worry about it for now. I do notice its not running as well as it should though. It has compression, but I think some of the compression escapes down into the boost port.
06-18-2007, 07:20 PM
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RE: Im guessing this is bad right?
What kind of engine does that sleeve go to anyways? From the looks of the port configuration, it has a nice race design configuration (deep rear lateral intake ports). As for its timing, I cant tell j=from pics. I would have to measure it.
Back on subject, try to continue to tun it and see if you feel any noticible performance difference. After looking at your pics more carefully, the scratch on the piston looks bad. I would say that your piston and sleeve are in need of replacement. But run it anyways and at least get some fun out of it; run that sleeve and piston like you stole it and until they are truely worn down to nothingness. Then, rebuild it or get a new engine.
Back on subject, try to continue to tun it and see if you feel any noticible performance difference. After looking at your pics more carefully, the scratch on the piston looks bad. I would say that your piston and sleeve are in need of replacement. But run it anyways and at least get some fun out of it; run that sleeve and piston like you stole it and until they are truely worn down to nothingness. Then, rebuild it or get a new engine.
06-19-2007, 04:38 PM
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RE: Im guessing this is bad right?
Thats a piston and sleeve from my LRP z28 spec 3 
. I plan on running the piston and sleeve into the ground. I think alot of my tuning woes are from the stupid half tank lean its alot more noticable now with the damaged piston, but its still got compression I just have to run it a bit leaner. Ill probably be ordering a new piston sleeve set in a week or so. I wont replace them until the old one is gone completly though.
Also can someoen give me good tips on putting a new sleeve in so I dont damage it. Getting the old sleeve out and in was a Pain. Getting it out was easier then putting it in. I stuck the sleeve in the freezer for about 10 minutes to shrink it and I applied heat to the case to expand it, but it didnt seem to help.
I was just thinking about how the sand got in there. I remember a couple weeks ago I was tuning my trucks at the track when my pipe came off. and my truck took a header into a jump beacause the sudden loudness startled me a bit. I think this is where the sand came from.
. I plan on running the piston and sleeve into the ground. I think alot of my tuning woes are from the stupid half tank lean its alot more noticable now with the damaged piston, but its still got compression I just have to run it a bit leaner. Ill probably be ordering a new piston sleeve set in a week or so. I wont replace them until the old one is gone completly though.Also can someoen give me good tips on putting a new sleeve in so I dont damage it. Getting the old sleeve out and in was a Pain. Getting it out was easier then putting it in. I stuck the sleeve in the freezer for about 10 minutes to shrink it and I applied heat to the case to expand it, but it didnt seem to help.
I was just thinking about how the sand got in there. I remember a couple weeks ago I was tuning my trucks at the track when my pipe came off. and my truck took a header into a jump beacause the sudden loudness startled me a bit. I think this is where the sand came from.
