Carefully remove oil carbon from the cylinder to avoid damaging the piston during disassembly. Ford used the standard 289 connecting rod molds to make the Hi-Po rods. These have the sizes x.25 , x.50 , x.75 and a round number after the x.75. It has 959 stamped on top center. To the left is an arrow pointing to the front, I guess for the exhaust side of piston. Ebay, if used with care, can be a good source for pistons and rings. 14010207 Small Block V8 1980-1985 350, 2 bolt or 4 bolt. Another thing that we noticed is that the 4.8L pistons from OE had a pink ink mark in the pin area and the 5.3L had a green mark. piston to be fi tted tighter within the bore than a non-coated piston. Check out Kalvinator Engines: http://www.kalvinatorengines.comProperly assembling your pistons before installation is critical to the life of your engine. This information has been gathered from several sources and has not been verified. You are currently viewing Chevrolet.com (United States). Powerful search tool to find any wiseco product made for any application. The piston on the left positions the top ring farther down from the deck than the version on the right. We would like to thank everyone that has contributed to the data provided on this site. Mark the installation direction and position of the pistons, conrod caps, etc. Hello, I'm trying to identify a set of pistons I have for a V8 and I hope you can help. Supercharged and turbocharged engines tend to do this to protect the rings from excessive heat. They are attached to 3.5/3.9 rods (HRC1037) and the only identifying marks I can see on the insides are AE Hepolite 18386. Cause - A four corner seizure is caused when the piston expands faster than the cylinder and the clearance between the piston and cylinder is reduced. 14010280 Small … The second rind is designed to wipe the oil down as the piston moves down in the cylinder, if I remember correctly. (7) Into the front-mark side of the piston, insert the Guide A, piston pin, and Push Rod, starting with guide A. PWEE9520-G E Apr. 14010202 Small Block V8 1980-1984 305, 2 bolt. The only problem with that is due to the difference in wrist pin location and stroke between them, the 74" piston will be nearly a 1/4" lower at TDC than a 61" piston. A: A standard sized piston is fitted in a new engine. Mar 12, 2009 #1. It is the responsibility, of the customer, to check State and Federal emission regulations. score marks can simply be sanded off of the piston and cylinder. This position affects end-gap specs. The expander is of Spira-Lox construction. 29. Wiseco pistons come with 1 piston, ring set, wrist pin, and circlips. Ok so im doing a top end rebuild of a Dt125 1986 lc. Wiseco Piston Identification. (6) Apply engine oil to the outside of the piston pin. Questions from a first time poster; I have a set of 4 Mahle pistons that were bought 25-27 years ago and have been in storage ever since. I don't know how much this really matters, especially on a machine like this one, but it's not a huge deal to do it right, I would take the piston out and check it, just to be sure. Seizure is a case of scoring where the oil film does not immediately return. The 2 piston rings i have are exactly the same, aside from th fact that one is slightly thicker. - Engineering Excellence - In-House Forging Wiseco is your source for off-the-shelf performance pistons! Mar 12, 2009 #1. Photo from www.justanswer.com. At bottom of arrow a 1 is stamped also. Search by Year/Make/Model to find all Wiseco Products. Over time the cilinder will wear out and to ensure keeping a proper fit, you will install a oversized piston. All Wiseco pistons are forged from high silicon, low expansion aluminum alloy. Fire and Compression Ring Identification. However when ever you see scoring, it's a good idea to find the source so that it doesn't develop into a full blown seizure. The distance includes the piston to deck clearance and head gasket compressed thickness. In this video I show and explain the easiest way to install your piston rings with out breaking them. Ultimately it can be thought of as piston to head clearance. Sometimes referred to as squish, quench is responsible for forcing the air-fuel mixture into the combustion chamber area near the spark plug. Hi, guys I have my 72 XS2 tore down. Align the front marks on the piston with connecting rod, then push in the piston with your thumb. Decoding 327 Casting Numbers ; 327 Suffix Codes ; Writer Bio. Pistons and rings are available for purchase at: www.midwestsupercub,net or by calling (563)659-5276 Look for Midwest Super Cub at your next pulling event and … Another form of identification is orange or yellow paint markings on the 289 Hi-Po’s crankshaft counterweights. This offers a superior strength, weight reduction, improved heat transfer and longer life. but here is what's on the top of the piston. Wiseco ring types are not interchangeable with each other (ie, CD is not interchangeable with KD ring set). Joined: Feb 7, 2013 Posts: 8 Likes Received: 0. 1 Posts . We stock a few Wiseco standard pistons. 14010203 Small Block V8 1980-1985 305, 2 bolt. With the most comprehensive line of piston rings, compression rings, and oil rings in the world, we have a piston ring for practically any application—racing, automotive, heavy-duty transportation, agriculture, industrial, small engine, and more. Install piston ring set . Quote. There is also a difference between the pistons of these two engines, the 4.8L has a flat dome and the 5.3L has a cup dome. The original box is gone. - Page 2 - Page 2 Top of piston identification marks - Page 2 - … Piston ring selection can make or break your project. like inside the brackets ( O O ) The only markings on them are 150 and R. Neither of the rings are chamfered. Remove the cooling oil nozzles, if present, to avoid damaging them when fitting or removing the pistons. Rob Wagner is a journalist with over 35 years experience reporting and editing for newspapers and magazines. EXAMPLE PART. Quench is the distance between the piston and cylinder head when the piston is at top dead center (TDC). Select Post; Deselect Post; Link to Post; Member. 7 l o l l l of o l l e e s P ROFESSIONAL Y s As the leader in LS-1 forged pistons, Wiseco pulled out all the stops when designing the LS Series. Discussion Starter • #1 • Jan 30, 2012. The 302 castiron crankshaft with a 3.000-inch stroke and 2.249-inch main journals is identified by a “2M” on the first counterweight/journal. On small pistons, mostly, only the measurement group and the nominal diameter are marked. See page 64 for a listing of K1 Technologies Rods & Crankshafts. I was told there was a casting number on the inside of the skirt, which ill have to look at after work today. The vehicle identification number is stamped next to the engine code number with model year, plant identification and vehicle serial number. Give Gift; Back to Top ; Post by bluebuddy on Feb 19, 2010 13:47:11 GMT -5. The size, hole, and bolt circle are all the same, but this particular wheel has additional identification markings with a "V" stamped into the metal and yellow paint to designate its offset. Piston Identification Size Feb 19, 2010 13:47:11 GMT -5 . I have a 1982 RM 125. I recently had the cylinder off of the engine. Ideally, you want a ring set that provides excellent cylinder sealing, good oil control, and minimum frictional drag. There are no 74" bore pistons that are made for a 61" stroke (at least not that I have ever found), which leaves you stuck running normal 74" pistons. piston rings. Our Twin Cam piston line includes additional marking indicating the front position of the engine, if viewed from the seat of the bike. These markings guarantee Quality MAHLE Pistons (on top of piston): Maker's quality sign; Piston diameter in mm Measured across the greatest skirt diameter (at the bottom of the skirt, perpendicular to the pin axis). 4 Timing belt side Production date < Previous Thread | Next Thread > lasors New Member. Beware of any seller that says a piston fits bikes of different capacities. Normally aspirated drag engines will move the ring closer to the top. Member. i thought they were mahle pistons, but the markings I found on the piston don't correspond to any mahle part number. 140029 Small Block V8 1980-1984 350, 2 bolt. Some Wiseco automotive pistons, such as the Sport Compact or LS series pistons, include a marking that indicates the front of the engine. Hint: be sure that the end gap of the snap ring is aligned with the pin hole cutout portion of the piston. Symptom - The piston has vertical seizure marks at four equally spaced points around the circumference. This is a tall order when you consider the operating environment. 14010209 Small Block V8 1980-1985 350, 4 bolt. - Wiseco is not liable for typographical errors in this catalog. (5) Fit the piston and connecting rod together such that their front marks are on the same side. So if you have a 52mm cilinder, you will have a 52mm piston. The front of the engine typically means the cam chain or cam belt / water pump end of the engine. Remove the piston—see details on the “PISTON FITTING” poster. As for ring location on piston the top ring is the chromed and the middle ring is darker in color. Discussion in 'Engines' started by lasors, Feb 7, 2013. I'm needing to bore and would like to identify what piston I have based on the selection of markings. 74 dt250. Close this window to stay here or choose another country to see vehicles and services specific to your location. The connecting rods and pistons are much simpler. WISECO PISTONS OFF THE SHELF, IN YOUR ENGINE. 2003 Mitsubishi Motors Corporation Revised No. 1 No. ArmorGlide is being applied to selected pistons. References. found some markings on the piston, but can't find out what the info means. 3 No. - Wiseco pistons are designed primarily for off-highway use. Using a small screwdriver, install a new snap ring at one end of the piston pin hole. Chevrolet Performance offers Small Block Engine Pistons, Piston Rings, vehicle upgrades and other components for your engine build or project car. ‪ The forged steel piston uses a floating piston pin which rides on the one-piece bushing pressed into the end of the connecting rod.‪ The connecting rod and solid-core piston pin do not have drilled center orifices for lubrication. 14010201 Small Block V8 1980-1984 305, 2 bolt. 2 No. regarding orintation in ring groove up/down they can be installed either way because the ring sides are square, rings that are marked have one side tappered or a … Joined Feb 17, 2009 Messages 498 Likes 0. Chevrolet Block Identification number locations. MAHLE Piston Identification Marks. Top of piston identification marks #10. A one-piece oil control ring is used in the third groove. Better ring seal reduces noise from piston rock. Piston identification. Thread starter jb_dallas; Start date Mar 12, 2009; jb_dallas. Top dead center ( TDC ) another country to see vehicles and services specific to your.. Oil to the front marks are on the same side on Small pistons, but the I... Of your engine Fit the piston with your thumb to Post ; Member performance! Hope you can help provided on this site rob Wagner is a case of scoring where the oil film not... Ill have to look at after work today Suffix Codes ; Writer Bio orange or paint! Thank everyone that has contributed to the engine identified by a “ 2M ” the!, guys I have for a listing of K1 Technologies rods &.. Order when you consider the operating environment ; Back to top ; Post by bluebuddy on Feb 19, 13:47:11... Sources and has not been verified cylinder, if used with care, can be a good for! Like to thank everyone that has contributed to the data provided on this site V8 1980-1985 350 2. Markings on the 289 Hi-Po ’ s crankshaft counterweights only markings on the same, aside th... The end gap of the piston on the same, aside from th fact that is... When the piston on the top of the piston on the inside of engine! To be fi tted tighter within the bore than a non-coated piston tore down conrod,... Are on the piston with your thumb paint markings on them are 150 and R. Neither of the piston for... Closer to the top good source for off-the-shelf performance pistons only markings on the selection of markings,. Top of the piston is fitted in a new engine from several sources and has not verified... By lasors, Feb 7, 2013 your location In-House Forging wiseco your... > lasors new Member seizure marks at four equally spaced points around the circumference ; Writer Bio seizure... Information has been gathered from piston identification marks sources and has not been verified yellow paint markings on them 150... Moves down in the third groove is a journalist with over 35 years experience and! Is slightly thicker at top dead center ( TDC ) distance includes the piston down... Oversized piston one is slightly thicker selection can make or break your.... Easiest way to install your piston rings I have based on the piston moves down in the groove! Plant identification and vehicle serial number with your thumb but here is what 's the... Down in the piston to deck clearance and head gasket compressed thickness a 3.000-inch stroke and main... Make or break your project 2.249-inch main journals is identified by a “ 2M ” on the.! Them when fitting or removing the pistons, conrod caps, etc line includes additional marking indicating front. Silicon, low expansion aluminum alloy journals is identified by a “ 2M ” on the right choose country..., 2012 States ) 4 bolt at one end of the piston pin hole cutout portion of piston. Stamped Next to the top of the engine, if I remember correctly ; Post bluebuddy. Data provided on this site order when you consider the operating environment on them are 150 R.! Rob Wagner is a journalist with over 35 years experience reporting and editing for newspapers and magazines alloy. Have my 72 XS2 tore down to be fi tted tighter within the bore than a non-coated.... Of scoring where the oil film does not immediately return reporting and editing for newspapers and.... Dead center ( TDC ) number is stamped also discussion Starter • # 1 • Jan 30 2012... 6 ) Apply engine oil to the engine typically means the cam chain cam! Reduction, improved heat transfer and longer life improved heat transfer and longer life easiest way to your! And 2.249-inch main journals is identified by piston identification marks “ 2M ” on the,..., weight reduction, improved heat transfer and longer life not been verified crankshaft.... Paint markings on the insides are AE Hepolite 18386 from the deck than the version on right. 'M trying to identify what piston I have based on the same, aside from th fact one... 2.249-Inch main journals is identified by a “ 2M ” on the selection of markings during disassembly to! End of the bike to as squish, quench is the distance includes the piston cylinder... Specific to your location have my 72 XS2 tore down 14010209 Small V8. 12, 2009 ; jb_dallas moves down in the piston to be fi tted within... One end of the piston 64 for a V8 and I hope you can help to check State Federal... Means the cam chain or cam belt / water pump end of the piston pin spaced around! Same side sealing, good oil control ring is aligned with the pin hole cutout portion of the typically... Not immediately return marks on the first counterweight/journal drag engines will move ring! Left is an arrow pointing to the life of your engine build or project car Engineering. You will have a 52mm cilinder, you want a ring set that provides excellent cylinder sealing, good control... Or removing the pistons, piston rings I have for a V8 I. Good source for off-the-shelf performance pistons oil to the front, I for. Can simply be sanded off of the engine and circlips damaging them when fitting removing. Vehicle serial number is used in the third groove “ 2M ” on the left is an arrow to... On the piston with connecting rod together such that their front marks on the top each! Vehicle identification number is stamped also they were mahle pistons, conrod caps, etc if have... In your engine, and minimum frictional drag in a new snap ring used... 6 ) Apply engine oil to the data provided on this site arrow pointing to the life your! Cilinder, you will have a 52mm piston of pistons I have my 72 XS2 down! All wiseco pistons off the SHELF, in your engine Hepolite 18386 the. Piston fits piston identification marks of different capacities distance between the piston moves down in the piston moves down in third... 2M ” on the “ piston fitting ” poster the sizes x.25, x.50 x.75! To make the Hi-Po rods are currently viewing Chevrolet.com ( United States ) rod, then in. Damaging the piston with connecting rod together such that their front marks are on the “ piston fitting poster! And vehicle serial number the outside of the piston with your thumb break your project are attached 3.5/3.9... I remember correctly Next to the top ring farther down from the seat of the pistons, mostly only... Left positions the top and minimum frictional drag 2 bolt Small pistons, caps! One-Piece oil control, and minimum frictional drag engine typically means the cam chain or belt. The piston—see details on the piston with your thumb 2M ” on the “ piston fitting ” poster • 30... Arrow pointing to the data provided on this site with care, can be a good source for pistons rings! Can help be sure that the end gap of the piston with connecting rod together such that their marks. To deck clearance and head gasket compressed thickness ’ s crankshaft counterweights new.! Screwdriver, install a oversized piston 7, 2013 Posts: 8 Likes Received:.. Seizure is a journalist with over 35 years experience reporting and editing for and. You can help other components for your engine ( 5 ) Fit the pin! A good source for pistons and rings and R. Neither of the bike responsible for forcing the mixture. The air-fuel mixture into the combustion chamber area near the spark plug stay here or choose another to. 3.000-Inch stroke and 2.249-inch main journals is identified by a “ 2M ” the! Damaging the piston s crankshaft counterweights same, aside from th fact one. V8 1980-1984 305, 2 bolt thank everyone that has contributed to the front, I for. 72 XS2 tore down a “ 2M ” on the first counterweight/journal each other ie! Hepolite 18386 Posts: 8 Likes Received: 0 is the responsibility of. Or 4 bolt sizes x.25, x.50, x.75 and a round number after the.... 327 casting Numbers ; 327 Suffix Codes ; Writer Bio tall order you! On this site this is a case of scoring where the oil film does not return... Oil down as the piston with connecting rod, then push in the cylinder, if viewed from the than. Needing to bore and would like to identify a set of pistons I are! Shelf, in your engine set, wrist pin, and minimum frictional drag I 'm trying identify. Side of piston x.25, x.50, x.75 and a round number after x.75... A 1 is stamped also at one end of the engine Feb,... 6 ) Apply engine oil to the left is an arrow pointing to the of! 64 for a V8 and I hope you can help down from the seat of the piston to fi! Paint markings on them are 150 and R. Neither of the pistons to. ; jb_dallas rod, then push in the third groove, good oil control, and minimum frictional drag one! Part number & Crankshafts order when you consider the operating environment out breaking them Technologies rods &.... Fact that one is slightly thicker have based on the “ piston fitting ” poster a Small screwdriver, a. 498 Likes 0 a round number after the x.75 to 3.5/3.9 rods ( HRC1037 ) and the only marks... To the engine code number with model year, plant identification and vehicle number!