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Does my engine need aftermarket sleeves? Jay’s Tech Tips #29 I

September 5, 2019

Hi, I’m Jay from Real Street Performance. Today, we’re going to talk about engine sleeves, what different types there are, and why you may want them. So there are 4 common reasons that you would move into an aftermarket sleeve. Power level of the engine. The bore size needed for your build. A material constraint with the factory style sleeve and the aftermarket piston you’re trying to use. Or you damaged the cylinder and you need to replace the sleeve. In the realm of power level, the factory was considering the best balance between heat mitigation and cylinder sealing. They weren’t really considered about what happened to the engine when you doubled or tripled the power level. An aftermarket sleeve is a thicker build of material and the alloy loans itself to keeping shape under elevated combustion. So as you raise the power level with an aftermarket sleeve, the cylinder will stay round. And when you raise the power level with a factory sleeve the cylinder can distort or crack. During the rebuild process, you may want to go to a bigger piston to increase the displacement. Or you have to go to a bigger piston to get the right bore finish back on the cylinder wall for good sealing. Either way the factory block has the limitation of how big it can get before the liner gets too thin. In these types of scenarios, you move to an aftermarket sleeve. There are a handful of engines that don’t work well with the common 2618 aftermarket piston. These engines choose nikasil or FRM bore and the makeup of that bore and the make up of a common forged piston don’t react well. This puts you in a situation where you’re going to sleeve the block. Another reason for going into an aftermarket sleeve is you damaged the cylinder. It’s cracked, or you’ve dropped a valve, or broke a rod and that cylinder no longer has the ability to be fixed. And you have to put an aftermarket sleeve in to use that engine block again. So regardless of the manufacturer there are 2 different types of sleeves. There’s a wet sleeve and a dry sleeve. A wet sleeve, the factory cylinder is totally removed and this sits in its place. So now the water of the engine is directly against the sleeve. A dry sleeve is going to fit inside the factory cylinder. So the factory cylinder stays intact. You bore it out, and you press this in. It’s worth noting that there are a few advantages with a Darton MID sleeve. These sleeves are installed with an o-ring at the bottom. So the sleeve can be removed if needed. If you have a situation where the sleeves are epoxied in. There’s a couple things that are presented. It’s hard to get the sleeve out. So if you drop a valve, and you want to service the engine, getting the sleeve out if it’s epoxied in is going to be a pretty large task. The other thing is when you bolt the head on this, it’s kind of floating in those o-rings. There’s nothing that’s unnaturally loaded in the block. So you have less tendency to develop cracks. This is not a new design. They’ve been doing this in the diesel community for a long, long time. You would just pull the sleeve out when it’s reached its service life, and put another sleeve in. It also locates on the other cylinders in the block which offers some rigidity in the deck area. So overall, this is a pretty nice product. It also does a good job of keeping shape under stress, and has a good memory. This alloy has a good memory to return to size. If you’ve got the engine hot or if you’re overusing it, It’s pretty forgiving material. There are 2 different types of dry sleeves. One is a flanged performance-oriented sleeve and the other one is a non flanged rebuilder style sleeve. So if you’re in a situation where you just need to get back on the road, it’s not something that you’re going to triple or quadruple the horsepower of the engine, you can use the regular service sleeve on. If it’s a performance application, you’re going to use the flanged sleeve. While there are a lot of machine shops that can do this procedure correctly, you should understand that this is not something. that’s very simple. And it’s easy to screw up. Make sure that you’re dealing with a machine shop that has done a lot of this work. And they’re very comfortable doing this work. If you make a mistake during the process, the engine block will end up in the garbage. And you’re going to be out quite a bit of money. So make sure that the machine shop that you pick to do this is capable and comfortable sleeving your block. So in closing, I hope you come away with this with some information that will help you understand what the sleeving process is. What sleeves you should purchase. If there’s something that I covered in here that you still have questions about, you can ask in the comments or email me directly. Thanks. Have a good week


  • Reply Carlos Foyle July 10, 2015 at 2:29 am

    Noob tech tips

  • Reply Chris Rice July 10, 2015 at 2:36 am

    The things I would do to work with this man every day and have him as my teacher.

  • Reply snowpimpin July 10, 2015 at 3:00 am

    love these tech tips

  • Reply robfrmny21 July 11, 2015 at 4:56 am

    Jay you should have told them when a shop screws your block up they almost always with lie and say you had load shift. Which is them blaming the casting and not there work

  • Reply tempeztad July 13, 2015 at 5:54 am

    Very informative and easy to understand, thanks for sharing.

  • Reply Jack Torrance July 16, 2015 at 12:30 pm

    Love the videos guys. Just wondering the intro and backing track name?

  • Reply Erdinc Akay August 7, 2015 at 6:04 pm

    @REALSTREETPERFTV "The makeup of a common forged piston don't react well" – Dont F20C and F22C already have forged pistons in stock form?

  • Reply V8 Racer 400 January 16, 2016 at 6:01 pm

    where are you guys located

  • Reply turbotoaster1984 February 16, 2016 at 2:46 pm

    Hi Jay, you mention that the darton wet sleeves have an o ring at the bottom so they can be removed and reinstalled multiple times, on my engine made by Rover, we also use liners but from factory we have to use a none epoxy sealant, I assume if I decided I want to try the o ring route, I would need to have the sleeves 'step' machined up a little to take the thickness of the crushed o ring as the sleeves have to sit 4 thousands above the block deck so the gasket can seal, im guessing i need to work out how much they will crush as I couldnt just leave them 4 thou above without the head on as they would drop down once the head has been torqued down……………..sorry for the long question, but if you can let me know what you think I would be most grateful. Lee

  • Reply hks071 April 12, 2016 at 7:46 am

    nice reading note.

  • Reply Adrian Cortez April 19, 2016 at 4:20 pm

    So if i want to go for an extremely high horsepower 2j or rb, it would be a good idea to use aftermarket sleeves?

  • Reply Tom Zlock May 9, 2016 at 12:50 am

    is it just me or does this guy look scary af

  • Reply Thomas Gutierrez June 16, 2016 at 3:42 pm

    so i was going to fully built a d16y8, looking on doubling to tripling my horse power. would sleeving the block be necessary??

  • Reply Ridwan Wam June 19, 2016 at 8:54 pm

    What material to make sleeve

  • Reply 45Mang June 23, 2016 at 10:11 pm

    I've got an 18c gsr block with an ls crank sitting in my garage. darton 81mm or 84mm? and a wet sleeve for sure.

  • Reply Craig Cundiff June 25, 2016 at 2:40 am

    Hey Jay,
    in your opinion is there ANY performance benefit to using a rebuilder sleeve material over a cast in place OEM sleeve ? Like in a situation where your bore isn't damaged and seals fine…but going to an aftermarket sleeve that is not flanged…any benefit? Thanks for your help…👍

  • Reply Pryde Racing August 22, 2016 at 8:33 pm

    Zero dislikes? Must know your stuff sir. I'll subscribe

  • Reply Nikola Dietmar Krapp August 24, 2016 at 8:34 am

    i'd like to know if it is a good idea to replace a factory sleeve from a porsche m96 engine and replace it with one with a thicker wall (keeping the inner diameter stock) i'm not about increasing power but rather about increasing engine reliability since the m96 engines are known for warping. will thicker sleeves prevent that or will they increase the probability of the cylinders getting warped? i'm reading different opinions on that from so called porsche experts and i don't know whom to trust.

  • Reply S7V7NFîV5 September 26, 2016 at 7:11 pm

    i used to fuk with sleeves back in my day now am just a average red nek sitting in my porch.

  • Reply DjKinetec September 30, 2016 at 2:56 am


  • Reply Twobarpsi October 2, 2016 at 10:36 am


  • Reply Arunendra Shekhar October 3, 2016 at 7:04 am

    does putting dry sleeve in 220 cc bike single cylinder engine will increase its performance

    answer must plzz i m waiting

  • Reply Pau Ayelo October 16, 2016 at 3:25 pm

    heeey Jay, i wanted to ask you what did you especificly have to study to obtain this level of knowledg in engines you have? in my country the tipe of thing you do is very rare so i cant get much information. love your videos

  • Reply genmaxpain October 25, 2016 at 2:55 pm

    i have never had to re sleeve an engine,
    i have seen a jaguar sleeve rust thru from the rotten rusty old anti freeze that rusted thru the sleeve, but never from damage
    and i just rebuilt a mitsubishi evo 7 engine to 650hp and that is on stock sleeves with forged crank rods and pistons running a LINK G4(KIWI made/ made in New Zealand)

  • Reply Driveway Marvels December 3, 2016 at 1:43 pm

    Make a vid on exhuast systems and intercooler placement.

  • Reply amil torrealba December 11, 2016 at 3:56 am

    where do you classifieds Benson Sleeves?

  • Reply kingcrimson234 December 27, 2016 at 6:54 am

    I just had a cyl sleeve installed in a 4.6 4v Ford engine in an 03 Mach 1. It was a new block and fully built, forged everything… then the fucking thing hydrolocked at about 1000 miles from a faulty FRPS. Bent a rod and damaged one of the cylinder walls. I'm waiting for the engine to actually get put back in the car, but my question is how reliable can I expect this to be? I'm kind of thinking about just selling the damn thing to be safe, which sucks. I've dumped a lot of money into building it and adding a blower. What should I do, sell or keep?

  • Reply Amber Brothers January 7, 2017 at 8:10 pm

    Does DARTON make sleeves for big block chevrolet blocks and if so where would i buy them

  • Reply Duane A. Carlson January 31, 2017 at 5:17 am

    I like to get more information about your wet sleeves for a GMC 181 cubic 4 cyclinder engine ?

  • Reply moe riou March 27, 2017 at 2:18 am

    Your channel is probably the most aesthetic car channel I've come accross

  • Reply Mrjohnnymoo1 August 24, 2017 at 6:23 am

    Can you sleave any engine you want theoretically?

  • Reply Bill Taylor September 15, 2017 at 3:47 pm

    there is another reason. Engine damage that ruined the original bore beyond safe over bore limits. I have an old Pontiac 421 H.O engine from 1964. Very rare and hard to find especially since its a 4sp code block. Engine sat for many years with water in the bore. Corroded it beyond a +60 over bore. Let alone the +60 on all the holes of a virgin block is a sin. Leaving future rebuilds at resleeving all the holes. +60 is about as far as you can take a Pontiac block. So what do we do? Sleeve the one hole and do a +20 to clean up the whole thing.

  • Reply Randall Aguero September 23, 2017 at 3:09 am

    hi , i buy h22 darton dry sleeve stock bore 87 mm i need to open the cilinder 88 mm this is safe too boost . i think 20 psi whit 6262 precicion

  • Reply EmpireEcho October 18, 2017 at 4:51 am

    How regular sleeve locks in block cylinder?

  • Reply Zombieslayer ! October 31, 2017 at 12:28 am

    Can i sleeve a engine which can't be rebored no more so I can keep using it

  • Reply James Wil December 7, 2017 at 2:54 am

    How do I choose a sleeve to keep stock bore? I'm boring 30 over. Staying stock

  • Reply Abec777 Hondatech December 11, 2017 at 12:33 pm

    Very good video.

  • Reply Dankarlpang December 31, 2017 at 1:11 pm

    Hey Jay, If ones installing a sleeve to an open deck block (a FA20 to be precise) what are the tolerances between each sleeves for thermal expansion?

  • Reply AzyPebble January 5, 2018 at 11:10 am

    I want a cat engine 18 wheeler piston on my 1.6l

  • Reply Paulina De Luca February 4, 2018 at 6:17 pm

    Very great and informative video. Thank you for your time sir

  • Reply eatSLEEPshitHONDA March 16, 2018 at 12:48 pm

    I'm trying to get as close as possible to 300 hp on my GSR…. do I need to sleeve it , what you recommend

  • Reply yasalam2121 March 25, 2018 at 6:27 am

    Top notch stuff

  • Reply FroztiProductions March 31, 2018 at 7:14 am

    Do block guards help distortion from high stress?

  • Reply Mason McElhaney April 20, 2018 at 6:06 am

    Awesome video!!!

  • Reply Joe Cobb August 16, 2018 at 2:32 pm

    Can you sleeve sbc 5.7 all 8 cyl.

  • Reply 17Sti September 13, 2018 at 2:36 am

    O ring with closed deck vs sleeves. If sleeves are better than what would ensure a good gasket seal like o ring does with closed deck. Engine in question: ej257

  • Reply kevin bailey September 22, 2018 at 9:59 pm

    Thank you

  • Reply Eduardo Silva October 6, 2018 at 2:21 am

    Do you recommend dry or wet sleeve for a 700wp k20z3?

  • Reply grn dragon October 11, 2018 at 3:40 am

    Can you convert a engine block to use wet sleeves?

  • Reply Gobiee December 11, 2018 at 12:02 am

    lol Im about to attempt sleeving my block in my machining class wish me luck

  • Reply Melvin Palencia January 29, 2019 at 5:18 am

    I just bought the Darton Dry Sleeves (300-012) on your eBay Store and now I’m a little bit worried. I’m about to rebuild my B16A2 engine and I want to keep the standard pistons’ bore (81mm). I don’t want to install oversized pistons (81.25mm or bigger). I already bought the JDM OEM P30 Pistons (81mm). Tell me something… Am I going in the wrong way? (Sorry for my bad english)

  • Reply Stefan Supra February 9, 2019 at 1:57 pm

    Are wet or dry sleeves harder to crack/distort ?

  • Reply David deLambert February 19, 2019 at 1:03 pm

    questiom: A Cummins 6.7-Liter jas a bore of 4.21
    could i use wet sleeves and 5.9 Liter pistons
    the 5.9 Lirwe Cummins had a bpre of 4.02

  • Reply Macario Viloria February 26, 2019 at 10:49 pm

    I have only one hole damaged should i put sleeves on all 4 cylinders? Thanks

  • Reply Stephen Mitchell March 8, 2019 at 2:15 am

    Well once again more I learn the more I learn I don't know!!!👍🏻👍🏻👍🏻😇😇😇

  • Reply Aaron Zeigler April 27, 2019 at 8:24 am

    Will a eg33 need a wet sleave for a rebuild/ build

  • Reply Bill Boeckler June 11, 2019 at 2:33 pm

    Jay ,I have a question, I have a d2 caterpillar 4 cylinder. Wet sleeves engine,cant find question is can you dry sleeve a wet sleeve, sleve has a lot of material. Maybe I could press a dry sleeve in to it after bored.

  • Reply Carpe diem June 17, 2019 at 9:12 pm

    In the case the cylinder has a crack in it and you need to put an aftermarket sleeve in to use that engine again: is it possible the existing crack in the cylinder wall gets bigger so the block will develop a new leak after a while? I have read this on a a forum and don't know if it's true.

  • Reply TURBOTRISTAN July 25, 2019 at 5:04 am

    Great video very very well done and I learnt a lot

  • Reply Danny Daniels 254 August 18, 2019 at 4:50 pm

    can you sleeve a 4th gen 3sgte?

  • Reply Santiago Cruz August 31, 2019 at 6:28 pm

    Hi. I have a H22A4 engine in a prelude, and the block have nikasil. The nikasil is very deteriorate and I wonder If i can bore the block so i can fit a bigger piston (20mm) without the need to use a sleeve.

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