MGA Engine | Workshop Uncut | Car S.O.S.

[Music] [Applause] right before I delve inside this engine to see what's going on with it I'm gonna have to remove all of the ancillary so that's the carburetors the manifolds the water pump their Dynamo the distributor all the other heater valves everything's got to come off before we get inside and I don't think it's gonna be very good when I do get in there right carburetors first let's see if I can get these off as a pair despite them looking so rough they're probably completely salvageable thinking of how I'm going to get to drive this lovely little mga when it's all done when it's all down [Music] right back to reality the other thing is you have to let the engine know who's boss I'm just gonna say right let me tell you you are coming apart and you're gonna run again there's no two ways about it you are going to be overhauled okay yeah good one pipe stubbornly holding on there we go there are a twin carburetors they'll need a further stripped down and rebuilding but inside clean as a whistle now I've coming to the manifold nuts here I reckon that some of these especially the ones that have been replaced using a steel nut insert of a brass nut I reckon they're going to be seized on to the studs and I want to avoid as much work as possible so for I try and undo them I'm just going to tighten them up a little bit okay that's it so that's just kind of broken the seal and then hopefully either the nuts will come out with the studs or the nuts will come off on their own and in fact here we are the nut has come off on its own without breaking the stud nice little tip I learned that when I was an apprentice and it works off comes the exhaust manifold right cover off oh yeah oh look at that it's black and in there stinky old oil my prediction is that this engine is going to be absolutely knackered and out it comes that itself doesn't look too bad it looks like it's actually had what was known as a D coke that's when somebody cleaned it up and got all the carbon deposits out from around the valves it actually looks quite clean so having taken a look in the data book these bores should be a diameter of two point nine nine nine inches across so basically three inches so now we'll be able to use a bore gauge in there and see how warm they are so what I've got here is a micrometer set up to two point nine nine nine inches and then the ball gauge is set let's just get that bang on set at zero so I know that that is measuring when it's on zero there it's measuring two point nine nine nine inches so I'm going to put it into the ball now and we'll see how warm that ball is and I can see that that's reading thirteen thousandths of an inch so these cylinders have worn by thirteen thousandths of an inch which means that they're probably going to have to be bored out beyond 2030 the next stage and to 30 thousandths of an inch that means that we'll get rid of all the rust and debris and it means that we'll have a nice clean ball all the way around all the way up all the way down the reason for this engine being seized is simply because it's been sat there and the piston rings have rusted to the cylinder walls it's just neglect so next thing to do is remove the sump now the sump is basically like a bath or a bowl full of oil this stores the lifeblood of the engine oh and tales of emulsified oil all right so out comes the oil pump now you'll notice this sieve-like thing which is a strainer that prevents or at least helps prevent the oil pump from picking up any large bits of debris so there's your pump out and here you can see when I turn it how oil is drawn in at this point this widest part and then as the space gets smaller it gets squeezed and squished out through this port here which is the outlet so here we go it's the last bearing cap out now let's have a look at some of these here's numbers 2 & 3 let's give them a little bit of a white you can see these bearings have got lots of score marks on them little impact marks where there's been bits of debris in there and that would indicate that perhaps this engine has had low oil pressure so actually it's been running at low oil pressure so these have been actually hitting against the journals really they ought to be a film of oil separating these bearings from these crank journals here okay right I can see that says naught 1 0 u.s. that means 10 thousandths of an inch undersized which means that the crank has been ground away by 10 foul and so these bearings are actually a little bit thicker than the originals to meet up with that journal however it's gonna take a little bit more grinding because I can see some little debris marks in there now this is what's known as a three bearing crank so there we go that's the last main journal out to the center one the sense one is slightly different in that it has these two thrust washers now the thrust washers here our two little additional bearing surfaces and they stopped the crankshaft from forward and aft movement so that's backwards and forwards movement which would then put strain on the on the connecting rods the big end bearings and it would all go horribly wrong we should be able to get the crankshaft out there we are that is the crankshaft now that will have to be measured up and it's likely that it may need grinding again but we'll have to see we have to check it over looks like it's in for a bit more grinding before it can go back together if we can get these fellows to move ah there we are that's one moved that's another one moved that one hasn't moved that one has oh okay yes the naughty one it's down here number one might have to get that out from the other direction all in all this engine will live to run another day it's going to be reboard the cranks gonna be reground so it's going to come back with all new sizes new Pistons new rings it's gonna be well pretty much good to go for another hundred thousand miles if it's looked after properly

Channel: Car SOS

Views: 13,564

Rating: 4.9756098 out of 5

Keywords: car sos, car s.o.s, car s.o.s., cars, car, motoring, channel 4, nat geo, natgeo, national geographic, fuzz townshend, fuzz townsend, tim shaw, classic cars, car restoration, how to restore car, top gear, the grand tour, grand tour, renegade, renegade pictures, carsosofficial, car workshop, restore car, restoring cars, how to restore classic car, classic vehicles, wheeler dealers, for the love of cars, love of cars, classic car rescue, fifth gear, motoring tv, misfit garage

Id: ZueF7m6r3EE

Length: 8min 20sec (500 seconds)

Published: Thu Aug 15 2019