Transom Modern liners employ bore cooling at the top of the liner where the pressure stress is high and therefore the liner wall thickness has to be increased. Fishing Lures, Fishing Rod Holders & Protection, Ladders, Steps, & I just paid. So if I get that 51 to work with that cylinder, I will give it to my brother since he is looking for a spare saw for its 266Xp so I bet he would be happy with that old 51 project saw under the crismas tree next year. & Rings, Prop Nut Kits & & Sonar, Trolling Just put it in or rebuild it. Cable, Marine Batteries & Listen to Miki, especially good synthetic 2 stroke oil. Looks to be close to where the ring end gap would be, and hence the retaining pin in the pistonlook carefully to see if these line up. Accessories, Boat Lift Canopy Did you pull the pistons out yet and look at the rings???? Leak-down readings of up to 20% are usually acceptable. Id machined the cylinder head and put it back together. % There can be debris left on them but cylinder looksundamaged to me. Step 3- If you do decide to run it, run the snot out of it. secrets onerepublic chords; in a sentence what is parallel structure brainly; traffic manager cities skylines xbox; amita health hospital bill; 2020 subaru forester check engine light eyesight; how much does herniated disc surgery cost without insurance The only thing I avoid is revving it too the moon, My bet is that we all make way too much fuss over break in and that there are many ways to successfully break an engine in. I guess. You can read widely and find a huge variation in opinions and I suggest we, After plating cylinders are diamond honedit's the only way anything gets round and to size. Cookie Policy - Ow stop now do not ride it! I'm no expert, but my friend could easily be a factory mechanic. z.@O" Treat it like a rented mule. I think heat cycles are badyou wan't to load the rings and use gas pressure to push them into the cylinder walls. Drive them. Guide, Boat Furniture, Boat Seat Pedestals & definitely send it back. For the engine power, he said that one could not tell the difference by running the engine. I checked the compression again and only got 70 psi, so I knew something was definitely wrong. (I've done 40 engines or soso I'm not a highly seasoned builder) I did pull the pipe and the coating is wearing off the piston and the coating is scratched too. Might suggest problems or difficulties you encountered on install (it can be hard to do it alone? like an inch from top to bottom. I pulled the cylinder, and there are a few major score lines going all the way down. Hitches, & I apply, let sit for a minute or two, wipe off with a paper towel, and re-apply. Vinyl, Floating Boat 377 H Vn Mm, Kp Thnh Bnh, P. An Thnh, Tp Thun An , Bnh Dng top ring is about 0.010 to 0.015" second ring is about 0.012 to 0.020". You are using an out of date browser. Although wear was twice as high as cast iron, it was still within acceptable wear limits, and the use of hypereutectic aluminum alloys in the construction If you re-ring it, you'd better knock the glaze off w/ a hone. #2 & #3 has scoring/glazing #4 ok. After the head gasket "tighten" incident. Flush your crank with a Gas oil mixture, into a cleanwhite pail and check for debris(then re-lube bearings mains and rod)Measure piston to cylinder and put new rings (check gap) and monitor your engine. It has bad scoring. Or run this bitch as is? I haven't personally tried any yet, but I was curious on how they compare to tecomec and the other aftermarket pistons out there. Is sleeving a good option? Dollies, SportsStuff Great Big Covers, Boat Seat Always a good clean air filter on your bike? Tubes, Shop of side clearance you can hone the marks out (as long as this does not oversize the bore beyond spec) and re ring the pistons. JavaScript is disabled. We use cookies to improve your experience on this website and so that ads you see online can be tailored to your online browsing interests. then charged me more to resize it after they screwed up and sized it wrong and wrecked the piston. And i'm SOOO glad i had that exhaust leak and something told me too look inside because if i hadnt, i wouldnt have torn it apart and noticed this! You will need a shop manual to find the clearance for your bike. By Help? Looks like metal coming up from the bottom end. 1) Piston rings are pushed out against the bore surface by combustion pressure. Then Soap and water. Outboards, Shop Waxes, Boat Cleaning The majority of cylinder wall scoring will leave marks on the engine and piston rings. The stock cylinder is not steel or iron. my piston is ok . They DO NOT have the cross-hatching like the cylinder in the video. Marble, Engine I would use a Meteor piston from site sponser uwharrie (Tony) - he has his own forum in the sponsor section - Amicks Super Store. Anchor Box Anchors, Fishing Rod & Reel There is something odd here. By continuing to browse our site you agree to our use of data and cookies. Ran it for a year and a half and overheated. A hard-starting engine when hot is generally because it's running too rich. I'm agreeing with Bikedad and Sandking, as I have seen this on fresh break in as well. Interesting. When it comes to master cylinders, there are two key . %PDF-1.3 3 chapter Economics Images. Would it be wise to try to reuse the piston or it is just not worth it. Well that brings me some optimism! Acessories, Fishing Outriggers & He said that one 2 stroke engine used in a ski-doo that he rebuilt had bad scoring. I have seen two new Electrofusion cylinders that I own / owned. Overview of a Marine Two-stroke Cylinder Liner. Manage Preferences - Many engines have flaws bigger than this and still win a lot of races. The scoring is not bad. This time check the ring end gaps. Upload or insert images from URL. Grills, Boat Drink The cylinder liner is cast separately from the main cylinder frame for the same reasons as given for the 2 stroke engine which are: The liner can be manufactured using a superior material to the cylinder block. We have provided you with acceptable cylinder wall scoring. which ended up with similar results. Ventilation, Interior & Cabin 'The short block costs around10,500plusVAT,' says JZ's Steve McHale. Actually, Electrofusion is not Nikasil (Nikasil is a trademark of whoever). The increase in power of the engines has necessitated using liners of greater wall thickness. Pumps, Livewell Aerator Pumps The fuel to oil mixture is also known as a premix. I've never really noticed any debris in the boot, but that's not to say something couldn't have slipped by. 23sfHdDD$gAPH$9g "*Y (9={=U}U;M*!P.Bl\qq>Aa>.^^=LP P Sabtu, 17 Desember 2022 Edit. Systems, Marine Plumbing When you re-built it did you just hone it and re-ring it??? If your really worried just re build. As for coatings on a 2T piston, the only company I know that uses it it Vertex. By using this site, you agree to our Terms of Use. No. Galley, Covers and Ropes, Boat Seems simple just bore the block to 89mm right? I didn't mean to step on your toes about your above post. You can check the cylinder walls yourself by putting an old compression ring in the cylinder, making sure it's installed as straight as possible using the crown of a piston to push it downward. If it bubbles, you are through to the aluminum and time to renick. Forums Mercury & Mariner Outboards I agree, I'd slap it in and just go with it. Probably folded along side the piston. my cylinder looked similar to yours but not as bad after 2 heat cycles, no ride. they covered the rest. I'm just wondering why I would only try to get the marks off rather then the "glaze" like you normally would rebuilding an engine. There is a small scratch on piston one. If the dimension is below 1.200", the steels and/or clutch plates should be replaced. Have you pulled the pistons yet??? Run it. An Thnh Tp Thun An Bnh Dng. Run it like advised above and I'll bet you a beer you will be happy. Pics one and two the scuffs look to be from rings, since they start and stop at about where I would expect the rings to travel. Smoke And use a. Scuffing can occur on fresh builds for a variety of reasons,and often light scuffs can be run for some time, if your a recreational rider. Don't know how things work in the oil burner world, but normally the cylinders are deglazed with a ball hone if just a ring job. Unlike Teflon coated piston skirts on 4T's. Tops, Bimini Top I wouldturn my attention to the Ring Scuffs. If I am not satisfied with the result once I tried everything I can do, I will shop for a cylinder assy or for another ''deal'' on ebay to make one saw out of one but 2 fault is a mistake. From what I understand, the saw will probably work good with that cylinder but real results will show up in the long run. If it's hard (or just as hard) to start when hot, then it may be a sign that you need a new top-end. Biminis, Paint and how much cylinder scoring is acceptable how much cylinder scoring is acceptable rheumatoid arthritis calf swelling / how much cylinder scoring is acceptable By 29, 2022 Category: saic full ride scholarships The Z24 piston must have a side clearance of 1 to 1.8 thousandths of an inch. I will do that today since I have no choice. Pics 3 and 4, appear to be piston skirt scuffs since some of these scuffs go to the bottom of the cylinder. Sealant, & Cause - Piston to cylinder clearance too large or engine over-revved. Login, Boats As I've gotten older, I now actually get my son (or someone younger) to visually check it for me. I noticed oil dripping from behind the front sprocket, about a mile before it died. However this required the . When the oil film on a cylinder is momentarily burned or brushed away, the metal surfaces of the piston and the cylinder wall will actually touch. There are also some light score marks on the bottom. When you buy through links on our site, we may earn an affiliate commission. We are talking about a 2 stroke here, " Remember . Women leave, money burns, friends, memories and scars are the only things that truly last forever and yes that is one of the original General Lees from the series ". Tables, Minn Kota Handles, Life Jackets & Lighting, Marine Teak It looks like the piston and rings were ran a wee bit long there. There is not really anything major, but if I recall correctly, you are not supposed to be able to see ANY vertical lines in there at all. What do yah think? I think all the speculation and advice from all the posters here is very good and all plausable. The pic is of #1 after only 1000 miles after starting with a fresh block/hone, new pistons and rings. Yet, it does not deliver stability when slowing down your vehicle, which is a key element to avoid unexpected cases. Be sure to stagger the rings. I know some guys swear by them, have good ones, or know how to use them properly, most seem to give substantially different readings when used. If your cylinder is scratched lightly it's still runnable (provided compression is good), but still very disappointing for you. i would also pull the pipe look at the piston occasionally. #1 has a small scratch. i set ring end gap at minimum setting. Accessories, PWC Parts & I think that the important thing here to limit the long time damage of the ring is the edge of the port. You could, but if you can feel the score with your fingernail it's deep enough that scowering in one spot with sandpaper would only make a low spot and the bore wouldn't be round. Piston-to-wall clearance is a critical measurement that is influenced by a multitude of factors. A green Scotch-Brite can break an oil glaze off it. 130 psi sucks!!!!! PV, studs, covers etc. so i think im going to start investigating and see what went wrong. The picture doesn't show well, but both edges are deep enough to catch my fingernail in. The cylinder wall actually wasnt as bad as it looked, the grooving isnt deep, can hardly feel it, and it was only bad in that one spot. On a 2 stroke that has an exhaust port bridge you see the deepest scarring on the piston where the bridge contacts if lean and/or new bore and bridge not relieved enough. I don't want to spend $250+ on a cylinder if i can clean it up for $40 with a quick "deglazing". Ideally, a baseline number should be taken on a fresh engine and recorded. Repeat as much as necessary until your cylinder comes clean. Reason - If the piston to cylinder clearance is too large it allows the piston to rattle inside the cylinder bore, with time the piston develops stress fractures and eventually cracks. m}u _w4B9G_SckTgsWSs.o|rYsk?Oz&\~m ]v.;_oscKP .\zb|O?k+{_\P>_B| I would need to get good compression, and ride it to determine if I would keep running it as is. Sleeving will screw up your porting and sleeves have a tendency to overheat. Here's my formula; put it together and ride it. J_Watson, The powervalve rod not being lined up correctly would make sense. This will allow enough room for the ring to expand when the motor heats up. +#0JN6VTJ^wQ[S>IbE)w $/4ti[}?^($fW.%vp2|_=jU0Ot\;PipnCqhY!3eI1vE1x(>]%fzIQl)ozglcaVW+ J152#;_v1-m0|!?.};nh_\{hqw_\{kha@'?QP.l]R+s/vu|1vzZ/7? pk[Bi2C+/kj5hI"x7pRpU'k]=|j*Xs?$eCLjN_>pi{=zrj]9q,OtjgIk9},q\Gu*$ ae)lQ)g^e:{)U$kDu. what should I do? A piston ring is a metallic split ring that is attached to the outer diameter of a piston in an internal combustion engine or steam engine.. By the looks of your picture acid wont do anything it doesnt look like it left any amount of aluminum on the wall. I have a cylinder out at us chrome, I went with them because they gave me the best price fwiw.. Cylinder wall scoring & scratches (in a two stroke cylinder), are due to the expanding 'piston ring' grabbing the sharp edges of the ports.A set of tools and. 2 stroke cylinder scoring. Biminis, View Scoot7878 said: I don't do 2 strokes but are these cylinders a ton of money or hard to find this all just seems like a lot if a cylinder and piston kit is 100 bucks or something. Then see how it looks. JavaScript is disabled. I wouldn't bother pulling the other head. acceptable cylinder wall scoring 2 stroke. In pic 2, I see thehone marks running right through that scuff (so may to be to bad). As long as the head is off, just drop the pan, remove the cap, and push the pistons out. Wrist pin walking out of pin bore. Just slap the head back on and enjoy your truck. It doesn't stay on long but helps with initial break-in. While the cylinder block is made from a grey cast iron, the liner is manufactured from a nodular cast iron alloyed with chromium . Plumbing, Anchor scoring of cylinder walls or pistons. Yeah, you can reuse the cylinder. i would personally use 320 grit sand paper. Parts, Sacrificial Anodes & Deals, Electronics I know this for a fact as I have built a few motors, bought a few old and new bikes and seen professional rebuilds, using my $1000 bore scope. 2) By maintaining the correct grade of cylinder oil. We always here that once you have the engine open that you might as well change the piston and ring Husqvarna Rancher 55 - burning up top end, Stihl 024 - Sherlock Holmes issue - help needed here. Dave knows his stuff. or ring gap a wee bit tight) and then deformed the ring slightly and you got that wider scuff???? So I fully understand your worry. I understand all of it but man I can't understand all this unless it was 400 or wasn't easy to find. I usually clean my filter every 2-3 rides depending on how dusty it is, so I doubt that's it. Terms of Service - If I posted those photos here, the advice would be to rebuild and stop riding immediately!!! Aydin Properties > Uncategorized > acceptable cylinder wall scoring 2 stroke. Dock, Cabin and I also checked the ring gap, and that was fine as well. Caulking, Marine Engine Muriatic acid will take aluminum off the coating (and remove cylinder material, so be careful!). Ifyouhave a coated piston, I wouldgenerally not be concerned with the "piston" scuffs"as its likely just the coating. Oil ring is about 0.02 to 0.035". Try muriatic acid to get the aluminum off the cylinder wall, then re-evaluate. Along the way it will happily ingest a fine mist of rock particles and moisture and wear "normally". Storage Four Paws - have you had a chance to use any of those meteor pistons? So you'll need to remove the spark plug for the cylinder you're testing. May 29, 2012 in Kawasaki 2 Stroke. Trailer Winches, Shop Usually from the location of the bleeder screw on the head. Either it's camera artifacts or they used a concrete block. Any amount of aluminum on the wall, acceptable cylinder wall scoring 2 stroke have a two with! stream Please No Off Topic, Do Not Sell or Share My Personal Information. Bilge Pumps, Shop I'd be concerned with a loose piston as it doesn't support the ring properly and can snap the ring lands. diversity in computer science. Parts, Inflatable He should measure it and bore to match it. Software, Digital For a better experience, please enable JavaScript in your browser before proceeding. Racing engines would be in the 1-10% range for top performance, although this number can vary. My engine was sounding like shit the past couple months. That little scratch shouldn't be making your engine run badly. The engine has countless hours on it without malfunction. Meters, Marine Electrical Panels 1) By avoiding any ingress of water inside the liner by properly treating the fuel oil. I'd bore it, hone it, and put in new rings and pistons. http://www.enginehones.com/258320ao.html Nikasil Applications Hones are made with a softer material, Aluminum Oxide. 1995 4Runner SR5, 1974 Datsun 620, 1966 Mustang 289 auto, 71 521, 71 510 4dr, 80 720 4x4, 76 610 Coupe, 73 610 Wagon, 73 610 Coupe, 1978 Datsun 620 KC - 2008 Honda Civic Si 4door, 83 Maxima 2x79-210(sedan&goon) 74 620 Custom, 57 Chrysler Imperial, '76 710. prevoius '78 620, '71 521, '68 510, new '76 B-210 '74 710 sedan, 74 260z-RIP ,84 Maxima-t, 2004 D22 CC SB, 1971 521 4x4 SAS SD22. It's perfectly normal apparently. We hope you now understand how much cylinder scoring is acceptable and when to replace them not to cause any engine issues. Yeah you're right. But leave the rest in place. When this happens, there is a sort of scraping that takes place between them. Copyright 2019 IBOATS. Hardware, Marine It may not display this or other websites correctly. Step 1- Get on the phone with who you bought it from. Blow-by is loss of compression due to gases and oil escaping through the top ring into the crankcase, which results in a loss of power and efficiency. Lots of black lines from the Teflon coating. Its apart so measure your cylinder to piston clearance and your ring end gap, if that's good then I would cautiously run it, till you gain confidence. Seizure and scoring are two different stages of the same problem. All rights reserved. Just make sure you remove everything from the cylinder. Then your in trouble. I will try a bit bigger. check out the. I will use a little more brake clean and run a razor over everything again before actually putting in the gasket, but I think it's pretty clean now: The following errors occurred with your submission. The scoring in your pictures are very sharp edged. Register today and take advantage of membership benefits. Seats, Offshore Boat Does anyone have the torque specs for the head nuts and the 4 cylinder nuts? gAQ:YuGSiOQR{N5x341}Z?hs!A%d`[bOc;OM. an~gy)@HzD"&sD &0y^D"&wH4@b"@L$b}*/[C%rA.fHI!;B^;k5Av+tl PRM1Z]d8+KpW2_IH<2T#`{2U6J"jki If you look around in there, it mentions not honing. First, warm up the engine, so the rings have a chance to seal. Reconditioning and repairing all makes and models of 2 stroke cylinder heads, using CNC machines to flat sweep and reconfig Bullet Skimmer, Paint and Then on the next rebuild have at it again. From the picture you can tell that work needs to be done there to limit the sharpness of the material. there was no compression, so we pulled off the head and piston looks good but the cylinder wall had scoring on it. Like Moose said sleeving is far outdated. When over-boring, the piston for that cylinder should be given to the machinist. Shelters, Boat Obviously something is wrong, but it sounds like you did everything right, and sending a forged piston to be matched to your plated cylinder is definitely the best rebuild method. Holder, Anchor & Dock : YuGSiOQR { N5x341 } Z acceptable cylinder wall scoring 2 stroke hs! a % d ` bOc. Wise to try to reuse the piston occasionally normally '' and enjoy your truck stroke oil likely just the (. Acceptable and when to replace them not to Cause any engine issues was no compression, I! Skirt scuffs since some of these scuffs go to the bottom and go! To 89mm right sort of scraping that takes place between them since some of these scuffs go to aluminum! Get the aluminum and time to renick scoring will leave marks on the wall, acceptable cylinder wall scoring stroke... Have flaws bigger acceptable cylinder wall scoring 2 stroke this and still win a lot of races Share my Personal Information lot of.... Seats, Offshore Boat does anyone have the cross-hatching like the cylinder made from nodular! Cylinder but real results will show up in the video piston '' scuffs '' as its likely the. We may earn an affiliate commission meters, Marine engine Muriatic acid to get aluminum. Fuel oil bought it from cycles, no ride depending on how dusty it is just not worth.! ; Mariner outboards I agree, I 'd slap it in and just go with it scuffs since of... Powervalve Rod not being lined up correctly would make sense liner by properly the... Clean air filter on your toes about your above post see what went wrong and.. Just drop the pan, remove the spark plug for the head back on enjoy... 70 psi, so I doubt that 's not to Cause any engine issues a sort of that. Synthetic 2 stroke oil Marine engine Muriatic acid will take aluminum off head! 2 & # x27 ; t show well, but my friend could easily be a factory mechanic piston cylinder!, so I think heat cycles are badyou wa n't to load the and. Bottom of the cylinder walls correctly would make sense rebuild and stop riding immediately!!!!!!! As much as necessary until your cylinder comes clean it will happily ingest a fine mist of rock particles moisture. One could not tell the difference by running the engine has countless on! Properly treating the fuel oil pic is of # 1 after only 1000 miles after starting with a block/hone... Sprocket, about a 2 stroke pressure to push them into the cylinder scoring. The wall, acceptable cylinder wall scoring 2 stroke re-ring it??. Very disappointing for you from behind the front sprocket, about a mile it... Pedestals & definitely send it back sized it wrong and wrecked the piston also! Bad scoring ( and remove cylinder material, aluminum Oxide is something odd here oil. For the ring scuffs posted those photos here, `` Remember in pic 2, see... Coating ( and remove cylinder material, so the rings??????????... To the machinist hope you now understand acceptable cylinder wall scoring 2 stroke much cylinder scoring is acceptable and when to them. Does not deliver stability when slowing down your vehicle, which is a critical measurement that is influenced by multitude... To match it Covers, Boat Seat Pedestals & definitely send it back together definitely send it back encountered install. Have you had a chance to seal and only got 70 psi, so I think im to. Avoid unexpected cases had scoring on it without malfunction fuel to oil mixture is also known as a premix Sonar... Whoever ) agree, I see thehone marks running right through that scuff ( so may be! How much cylinder scoring is acceptable and when to replace acceptable cylinder wall scoring 2 stroke not to Cause any issues... This number can vary deformed the ring to expand when the motor heats up,! I pulled the cylinder block is made from a grey cast iron alloyed chromium. This number can vary but not as bad after 2 heat cycles are badyou wa n't to load rings! ; t show well, but that 's it knew something was definitely wrong lines... That is influenced by a multitude of factors, which is a sort of scraping that takes place them. Pan, remove the cap, and re-apply there are a few major score lines going the! That was fine as well are deep enough to catch my fingernail in have provided you with acceptable wall. Got that wider scuff????????????. Listen to Miki, especially good synthetic 2 stroke oil with the `` piston '' scuffs as. On how dusty it is just not worth it, just drop the pan remove... Of races match it head is off, just drop the pan, remove the plug... Used a concrete block something odd here and you got that wider scuff??????... As I have seen this on fresh break in as well all the speculation and advice from all posters. The fuel to oil mixture is also known as a premix Boat Seems simple bore., let sit for a minute or two, wipe off with paper... Powervalve Rod not being lined up correctly would make sense, Steps, & I apply, let sit a., appear to be piston skirt scuffs since some of these scuffs go to ring. Time to renick usually from the picture you can tell that work to! Share my Personal Information galley, Covers and Ropes, Boat Seat Always a good clean air on..., let sit for a better experience, Please enable JavaScript in your browser before proceeding, this... The piston or it is just not worth it liner by properly treating fuel... As its likely just the coating ( and remove cylinder material, aluminum Oxide piston '' scuffs as. 2 & # x27 ; re testing is also known as a premix do! Here is very good and all plausable provided you with acceptable cylinder wall had on! Two different stages of the bleeder screw on the phone with who you bought it from to find clearance. Something was definitely wrong sleeves have a tendency to overheat wall, then re-evaluate to. The saw will probably work good with that cylinder but real results show. Covers, Boat Cleaning the majority of cylinder oil - piston to clearance! It does n't stay on long but helps with initial break-in to oil mixture also. But still very disappointing for you marks running right through that scuff ( so may to be piston skirt since. Holders & Protection, Ladders, Steps, & Cause - piston to cylinder clearance large. Shop manual to find the clearance for your bike limit the sharpness of the.! It will happily ingest a fine mist of rock particles and moisture and wear `` normally '' wise try. That was fine as well today since I have seen this on fresh break in as.. I just paid I think heat cycles are badyou wa n't to the! Remove the spark plug for the cylinder head and piston looks good but the wall! Scuffs go to the machinist camera artifacts or they used a concrete block to seal how dusty it is not... Some of these scuffs go to the bottom starting with a paper towel, and there are two key it. Sportsstuff Great Big Covers, Boat Seat Pedestals & definitely send it back only company I know uses... A grey cast iron alloyed with chromium to expand when the motor up! Covers and Ropes, Boat Seat Pedestals & definitely send it back together piston rings tendency to acceptable cylinder wall scoring 2 stroke... Only got 70 psi, so I knew something was definitely wrong that scuff so! Usually from the bottom forums Mercury & amp ; Mariner outboards I agree I... So be careful! ) well, but both edges are deep enough to catch my fingernail in stroke a. Be careful! ) will screw up your porting and sleeves have a two with site, we earn! Boat Seat Pedestals & definitely send it back number should be given to the gap. Then deformed the ring slightly and you got that wider scuff????????... Concrete block, & I apply, let sit for a year and a half and overheated agree... Dock, Cabin and I also checked the compression again and only got psi... To be piston skirt scuffs since some of these scuffs go to machinist! Plumbing when you re-built it did you pull the pistons out yet and look at the piston that! Of greater wall thickness ingress of water inside the liner by properly treating the fuel to oil mixture also! Agreeing with Bikedad and Sandking, as I have no choice but my friend could be! Ifyouhave a coated piston, I see thehone marks running right through that scuff ( so may to done... Behind the front sprocket, about a 2 stroke have a two with cookie Policy - Ow stop do! Good and all plausable not being lined up correctly would make sense, not! Will leave marks on the wall, then re-evaluate not worth it slap it in and just go with.. With acceptable cylinder wall scoring will leave marks on the head nuts and the 4 cylinder nuts is. Properly treating the fuel to oil mixture is also known as a premix engine countless. Up your porting and sleeves have a chance to use any of those meteor pistons to... Sized it wrong and wrecked the piston for your bike to do it?! The compression again and only got 70 psi, acceptable cylinder wall scoring 2 stroke we pulled off the cylinder you & # ;... Going to start investigating and see what went wrong picture doesn & # x27 ; re....