305 Seized SBC Teardown / Rebuild Part 1

hey guys how's it going today so today we're going to tear apart this 305 two barrel this engine is uh i believe it's a 78 305 the casting number indicates it's a 78 or 79 460 778 so it's a 7879 305 two barrel this engine is out of a 78 rally nova i'm not too sure about the details on the engine i know it was running when it was parked but now it's seized um we're going to take a closer look at it so it's either going to be a complete build like full machine package and new pistons and stuff or it's not that bad and we'll re-rain it that's probably not going to happen but it's an option but we're going to take a look at it then we're going to advise the owner on the best course of action so it is complete i know they uh i believe this family um members the second owner and i think the first owner was a family member as well so i think it's been in the family since noon it's never been apart everything is still on it from the day it uh was new but we'll find out how bad we seized we'll take a look and uh see what's going on like i show uh everybody in the beginning it has the uh the factory drain plug in the box still has the factory uh frost plugs there's no rain on them so we i already knew it was a factory engine and not touched but again just confirming by looking into those things with everybody it doesn't look like the fuel lines ever been off of this it's pretty cool actually so we're going to start taking it apart and uh like i say i've already tried to turn it it won't turn i know they were trying to turn it before they pulled it out of the vehicle and it won't turn we'll start by removing some spark plugs and we'll take a look at them we'll lay them out in order one through eight they'll be left to right and then we'll uh see what cylinders rusty and kind of assess things as we go along so let's get those spark plugs out all right plugs are out so let's take a look at number one it keeps turning yellow in here it's the lighting all the gas i just checked them all they're all between 45 and 50. so number three has some rust in there also burning some oil okay yeah some oil and number five as well hmm there's a little bit of rust there's not a whole bunch i'm not sure why it's so seized it was using oil though that's one of the better ones and then of course this one with no center electrode in it whatsoever not really sure what that's about okay so i guess what we can tell real quick is uh we have a little bit of oil consumption or at least bad valve guys but and possibly a choke that's not working a hundred percent i don't have the distributor here so i can't see the rest of it but that's what i can see right now so we'll get back to uh getting the engine started to pull down we'll start perfect we'll start pulling the engine down all right let's start uh let's start getting the zipper so if we start with the carburetor we'll uh take almost half inch bolts i know where it there it is okay let's break these lines off real quick so for the back brake line it should be three quarters and five-eighths okay and for the front one shoot we're actually using the lang wrenches on these because they're such good shape i didn't want to didn't want to risk damaging them okay take the return springs off one of your things we'll need a we're going to need a container all right that way we keep everything in one place so we'll quickly get go through all this stuff i'll leave what we're doing as we go along we'll get rid of the uh the back bracket for the uh for the brake booster line we'll get that off there okay 9 16 the intake manifold it'll be half inch on the other side the bolt over the intake manifold keep that in mind they're a little bit different if you don't know where they go set them aside or put them in baggies i know where these go i've done that over and over and over again through my uh through my days the other half inch stuff we can do is right here because we've already loosened it okay [Applause] so be careful we're taking all this stuff apart don't wanna don't wanna wreck anything like that's the one thing don't don't damage stuff because you're in a hurry or because you feel like you need to or just be careful it's always somebody else's stuff some of the stuff they might want back or they might want to reuse again if it's really no good just put it in a box and give it back to the people okay at the end of the day it is their stuff okay so there we have that lots of lines on these things nope that's right and else the camera is the wrong spot okay so what do we have here one thing is when you're doing this feel free to take a whole bunch of pictures if you're not sure or you're not even sure if you're confused by some of the bolts what you think they might be or where you think everything goes these vacuum lines just take pics you can like i can go back to this video and watch myself turn it apart if i actually have a question right if you have some pictures just take pictures of everything at a certain angle that way you're never left guessing especially if you want to be all original and and that's important to you i know the people that own this car would like to keep it all original so for all these lines and stuff i'm going to leave these kind of separate these don't always come out on the first try but we'll keep working with it here if not we'll spray down with some oops it's certainly come up wow it's probably been in there since 1978. all right some of this stuff you just gotta work with a little bit don't get intimidated by it it's not that big of a deal um you'll get it all right some of the things just make some room all this stuff that we're taking off needs to be cleaned anyway at some point so you might as well just start taking it off now again if you question any uh anything you can always refer back to the uh to your pictures we'll just take these little we'll bend these little tabs back for the exhaust so we can take the exhaust manifolds off here i notice they broke the exhaust manifold bolts off which is no surprise like i say it's an old vehicle so we'll uh we'll be drilling the exhaust manifold studs out so one of the things about these engines guys it's one thing to tear them all down and rebuild them but there's a lot of work that's involved here we uh everything needs to be cleaned everything needs to be reassembled and you want to do it properly when it goes back in the car i wanted to look like it was brand new going back into the car haggardy does some nice videos and they do some time lapse videos of a greasy old engine being torn down and then they kind of go through machine process and they uh they look brand new at the end we're not going to be quite that good because i don't i can't go through the machine process but i will continue this we have the other tbi 350 that is at the machine shop right now and coming so when we send this one to be machined hopefully the other one's ready to be picked up and we can put it back together but we'll go through incremental steps i don't want to drag it onto several videos but i'll do my best so i can explain certain ways to do things or how you want to do stuff that's uh that's what i'd like to do anyway all right let's get some of this stuff apart where's that socket get that top rat holes that's a three-eighths hey i haven't seen that for a while and some of this stuff it's not the same on everything [Music] i don't know if we're going to keep that i don't know if i want to fight with this on camera this is probably not going to come off that too easily what the hell everybody else has to play with it i guess these are uh we all go through this it doesn't matter who it is one of the things about videoing is you can take all the hard stuff out that you do or you can just share with people because you know that people are going through the same stuff and they just like to see somebody else go through so they know they're struggling the right way or their struggle is worth it full of uh all kinds of white cred in there we'll set that aside actually just for uh you can't let's just knock that thermostat building off see if we have to drill these bolts out nope good these are 9 16 oh that's disgusting as most of you may know check that out all right factory 180 we'll be using that again great exhaust manifolds maybe that'll show us which one's the worst [Applause] okay on cylinder back of this heat riser there's a little just a little fitting there a little ball socket fitting just give it a little nudge with your uh screwdriver you'll be fine set that here it pulls up wow full dirty all right hopefully see anything inside of there yet let me grab a bite um all right number four we'll have some stuff in it okay we're good i know we should be brushing all the dirt out of here and vacuuming out or uh pulling it out of here but we're going to be doing a tank on this engine anyway girl let me get some of the steering out of the way so i'm gonna say i'm not gonna worry about it now if you're in the vehicle and you're repairing this engine by all means clean out in all the crevices in here okay like all of them whenever you're tearing this stuff apart you want to clean or blow all that stuff out of there before you take the intake manifold off in our situation we're rebuilding the engine anyway i'm not going to uh do that right now but we can take off the valve covers here real quick let's pick up these tabs on the bone these are valve cover bolts or three eggs most of them are 7 16 so i remember graphic indeed [Music] [Music] okay one thing we'll do right now is we'll take that pb um no use leaving stuff till later that are that's just gonna fight you it'll just uh it'll frustrate you just get it done we can that way you're not always fighting with stuff after the fact this hose might not be solvable maybe just because we have turned doesn't mean we're gonna get it off that's for sure not a we're gonna have to cut that one okay i'll do that later then just gotta leave it there so i ordered the right one but he's gonna take both these are all 9 16. they're all in greece one thing don't forget these uh brackets when you put your engine in if you think if you're going for the aesthetics leave them out they sure are handy when you put stuff out you guys though you can always take them out after your installation if you want to keep them keep them out what's up wheat and most we are in a farm community in saskatchewan so no surprise there remember the bolts with the shoulder on these always go to the bracket okay should probably document some of this actually it's bad [Applause] perfect okay we're gonna have to uh you could use your available three he's anybody's wondering okay so behind here we have our last remaining intake manifold bolt well we actually can't see it yet we'll be digging around in there for a while a lot of people cut this stuff out but it's a it's a true reality this is the stuff you go through there's a really nothing clean or nice about disassemblies typically so [Music] okay [Music] [Music] all right we kind of needed to do that um just your average gunk so what we see is no moisture in here right we just see uh some oil build up some tarnish we have a little bit of a little bit of rust in here why is this in for a long time so i don't think it's even that seized and we'll see a little more as we get going here i might have a bad camshaft on this right here though we'll keep digging and see what we find let's knock that intake manifold off okay so we vacuumed everything off okay let's take out this last bolt and we'll knock the intake off all right awesome okay make some room for it two barrels yeah let's sit through here actually anyway remember what size these sensors are this is the wrong socket one underneath it'll work actually take this out before you pull me off below remember that gauge is uh for me that's understood so keep that in mind when you put your engine back together if you have a idea light or dummy gauge do you have a oil pressure gauge because you'll want to put the corresponding center all right well so far really nothing to see yet we have some rust in uh some of these oops yeah we have a little bit of rust in some of these some of these intake ports and take a quick look here all right we're gonna have to uh do this the hard way maybe just knock the heads off and take a real close look at what we have going on here the uh ground straps they never both attached when they come in here one end of the other you can take advantage right now i've taken out the uh pull the pushrods when you're ordering parts for your [Music] rebuild keep in mind these are wear items always check them out these are uh it's actually not that bad surprisingly i'll look over all this stuff after i cleaned up and figure out what we'll reorder i usually do rock arms they're usually not that expensive but sometimes i hate to say it our factory stuff is sometimes better than the aftermarket stuff we buy so all i can do is caution you that you should buy me rock arms but you don't really need to and don't be buying rover rockers for your uh 150 horsepower 305 it won't help it no matter how many people tell you it will all right let's get these headphones out we'll dig out the uh the corners like we know we need to and sorry i seem to have you guys bounce around so the reason we dig up the corners is all that uh goo in there a little bit hard to get a wrench on right so let's get those done this stuff is usually quite hard and sediment that's been sitting in there for years and years and years right so if you throw a socket on there nothing you'll strip your head bolt but he could balance off it a couple times i suppose you could strip it if you did it enough times all right i'm kind of curious to see what's under here see how bad it is these are a 460 cylinder head you really know if i've heard of that [Applause] is there any freezing here i'll find out in a second of our viewers actually reached out to me and said you should undo the cylinder head the same uh the same way as they've been uh torqued down and that's fair um especially when you're doing a repair when you do repairs you want to be careful not to damage anything to create yourself more work moving forward right um doing rebuilds a lot of the time we just we just mill the blocks anyway but he does have a valve point so i can't remember his name right off hand right tell you but it's in the comments of the 350 section it's funny we strive for cloning this when we're doing these but they come in so dirty [Applause] all right so we have all 17 yeah two four six eight nine two four six eight yeah so i fear we're gonna spill a little bit of fluid on four here but it's all good now one thing i do tell people to do just leave a bolt in there temporarily so you don't lose your cylinder head sorry it moves i just don't want to pop it off real aggressively here i don't like sticking the tail down of course just so you know i just don't like that i've seen guys ram and jam stuff in there again that's nice you don't need to do that just take a minute okay [Music] all right we have here you have a water rust a lot more than i thought but not enough where it shouldn't turn it looks like uh they've had this thing turning before at some point i see it was stuck here at one time i don't think you can see the rain in the cylinder wall there let me go so we're going to keep trying to get this uh to turn i don't really want to pound the pistons out of it all that badly so we will but i would rather not factory steel shim head gasket from gm nice all right i'm going to take the other side side off here anybody that wants to stick around feel free again 5 8 rockers no pen push rods yet that's a nice sign or no broken ones either so [Applause] [Music] so we're not really rushing this is kind of a normal disassembly on the engine i think anyway so when you're doing yours it should be much the same right i'll try and move you guys here so you're able to see something what was that all right let's give it a shot here [Music] and yeah these little lock steps these off that was broken and that one's worn away awesome right on here we go just curl that up and over the dipstick save your old trace unless you go for aesthetics don't save them all right okay let's get this off i just uh hunted all the other head and realize you guys weren't there sorry about that let's get rid of some of this clutter get rid of the water pump 916. [Music] i'll be leaving here in a few minutes i have a haircut appointment we just uh finally opened it started opening up again yesterday and the copic stuff our restaurants have just been opened up again yesterday and uh some are other things that we need just use a plastic rubber hammer thing don't don't need to use the other stuff [Music] so let's get rid of all the clutter okay and then we'll uh get rid of the fuel pump as well one thing we should probably do with the fuel pump before we and do for the uh let's make sure we uh take that line up again 5 8 perfect no problems that's awesome oh one of your things we could take out while we're doing all this is that front bolt in the block where your push rod or your fuel pump push rod could actually make a bunch of fluid out of when you're building your engines put that put those back in they're kind of important okay all right 7 16 okay and we uh the other two on this one or three eighths to hold the plate on as your own they also are seven sixteenths [Applause] so keep that in mind what else do we have here we have a battery cable connector connected to that don't forget that stuff keep that on there you know i don't like this table so you go i know it's frustrating when it's in your way it'll save you a lot of time and problems if you do it you know so many people burned up their starter wires on headers and stuff there's no need to just just take care of this stuff okay what a mess i just want to get these uh spark plug protections off so we'll take the motor mount these motor mounts for 9 16. okay and the other uh stuff here's b7 16 string yep just doing so take these out they'll slip on anyway i probably could use my uh my little lymph after all this but if i slow down for a second so dirty okay so remember these are either well they're almost always 7 16. you slip out you don't have to stroke stroke away wow i have to do a floor clean up here i have to get that for my haircut and like always stay organized don't let this stuff defeat you don't get frustrated and wreck something and think hey i'll come back to you later that usually never happens what usually happens is you're in a rush to get it running or you're all pumped up and you're dealing with problems you don't want to be dealing with so i i know these videos can be boring but this is just real time taking stuff apart and trying to deal with the problems that we all face when we do the stuff right temperature center not for a gauge what is this 1560s that should be the one easy okay um so when i get back because i have to take off we'll uh we'll whip the uh other cylinder head off it's supposed to be there [Music] remember before you whip it off here grab a bowl just to protect yourself and your uh and you're wrenching okay all right so it's not much different on this side let me find a right here before i grab onto you guys it's pretty much exactly the same it really shouldn't be seized that bad actually i don't know why he's fighting so hard so we got some rust in there all right guys we're back so i want to get my hair cut problem solved so where are we here um let me see cam chef was out of it you have quite a few lifters with uh you can actually see that one in the white there's got quite a dent in the bottom that one's actually missing an edge so anyway who cares we we guessed the lift is probably bad this is about the time they started being really bad so um we sprayed down with wd it's pretty messy in there i've tapped all the pistons with the end of my uh with the wooden end of my hammer i i would have guessed they're all not that tight but i still can't get it to turn so i've been working on it for quite some time here i'm going to keep working at it i'll spray down again tonight and i'll probably leave a b and i'll work out again tomorrow for a little while um i brought up rearing this engine earlier and before i spook anybody with that sometimes there's a there there's stuff that doesn't that you can do for say a vehicle that's not going to drive very much more in its life or are only going to run once a year and go to parades or whatever some people prefer not to go through a full build it's really kind of a i don't know it's an individual decision thing right this situation is it isn't going to work out and that's all i wanted to say like if this thing was in really good shape and we found only a small problem and it came and then seized right away and the cylinder walls were good that'd be different but we're not going to be in that position here so we will uh knock it down on a later note things that you don't think about when you re-rain or do a new engine check out how close to the edge of the board that factory steel shim gasket is that's awesome because i think most of the stuff we get now we're 350 um gaskets i don't i don't even know if we have specific 305 i i've seen them say 305 with 350 part number most of the time so you have a gasket where the fire rings out to here all the way around and the thicker one so even if a guy back in the day you know we used to gasket these things or rearing them and think that uh it was going to be so much better they already had no compression and had problems we were just adding to it and then you put a bigger cam in because that was supposed to be the answer i just want to show you how things kind of go wrong throw some headers and some big exhausts on there and maybe a hallway and it never was quite quite that good right you know what i mean seen that happen a lot of times when he's younger anyway i just thought i'd point that out because i forgot how decent these steel shim gaskets were to the to the cylinders they're really good anyway so what do you guys think here this is a two barrel engine i'm thinking probably go to flat tops because we're going to be going to a thicker head gasket if we don't have to take much off the depth and uh i'm just saying the stock style camshaft retain the two barrel maybe get him to put a really small dual exhaust on it should get great mileage it'll be peppy it'll be everything for him he's not a hot rodder and that's fine i mean we're not all the same right so absolutely that's what i'm thinking i'm going to cut this video into a couple segments i'm going to keep working out i like to unseize it without knocking it apart but i don't think that's going to be possible i would like to turn i don't know i'll pull the pan off tomorrow i'll make a bigger mess on my floor i like to just make with a mess so i can get it over with and clean up i have to bring that trailblazer into an engine swap and i need to get this to machine shop and hopefully the tbi 350 is almost ready to come home um when we send this way to be machined remember we'll have to send the intake manifold we'll have to drill all the broken studs in the exhaust manifold there's a whole bunch of stuff to clean up here so remember that when you're doing your guys's build as well try and plan all that accordingly but i'll end this video here i'm going to try and shorten up my videos a little bit and we'll pick it up tomorrow hopefully we get somewhere with this tomorrow and then we'll get started on that uh 4.2 trailblazer swap right after we get this seam ready and off to the machine shop all right have a good night

Channel: Jay's Garage

Views: 9,631

Keywords: chev, chevy, chevrolet, rally, rally nova, nova, camaro, chevelle, 1500, c10, k10, suburban, 4x4, 305, 5.0, 327, 5.3, 350, 5.7, 400, 6.6, camshaft, flat top, double roller, th350, seized, seized engine, tbi, rebuild, teardown, assemble, disassemble

Id: dF88Q_4cGjg

Length: 50min 40sec (3040 seconds)

Published: Wed May 19 2021