I was going to jump on here and do a quick edit before getting a reply.
Most car forums are financed by sponsorship, the sponsors are usually parts suppliers and parts changers.
So automatically you're going to get "fake news" and suppression of the truth.......to most kids though it must be me the one that's nuts but kids usually figure it out when they grow up a bit...........my own kids included. Most kids in their 20s and early 30s, they've got the mindset where they think they know far more than their parents, which is never true.....as far as the fake news goes.....the worst perpetrators are car magazines because they only survive through advertising........they're aimed directly at kids....that seems to be where a lot of kids get their shitty attitude and ideas from.
As far as reusing headgaskets goes.....First of all you jump onto google and search for reusing MLS head gaskets..........lots of information out there.
Good example here.https://www.yellowbullet.com/forum/show ... ?t=1543218
If you don't have any confidence in your own workmanship you shouldn't be playing with it.
Another onehttps://fordbarn.com/forum/showthread.p ... &showall=1
anotherhttps://grassrootsmotorsports.com/forum ... 924/page1/
The world is full of clueless people?
Then you look at the problem from a slightly different point of view.
The industry standard (yes, I've spent a few years doing engine reconditioning too as a career change) with most head gasket jobs is that you always use new head gaskets and often new bolts too.....but neither are required.
Most car mechanics (parts changers) just rip it apart, fit new bits,.........it's done......they didn't know much to start with and won't ever learn anything new.
Pulling apart a "project engine"....it's the same as building one, only in reverse....need to measure everything as it comes apart...........that's if you're interested in learning.....if you're NOT, then just rip it apart with a rattle gun.You'll stay dumb.
Most overheating problems with modern cars start off as a slow headgasket leak and progressively get worse. The first sign is often the need for topping up the expansion bottle, second sign a slight overheat, third sign a popped hose and 4th sign the radiator top tank explodes....It never used to be a problem as much with cast iron heads and cast iron blocks, aluminium is a different story, it's a lot softer than cast iron. Headbolts always lose tension over time and heating / cooling cycles.It's NOT the bolts, it's the soft aluminium that the heads are made from. The easy fix is to retorque the heads. No gaskets required. Free.
OK so wow would you know?
Clean the bolt head, put a paint mark on it facing the front, crack it loose, retorque to spec and take note of where the paint mark ends up.
Alternatively use a pointer type torque wrench and turn the bolt back to the original position after cracking loose and take note of the required torque.
Better still do it both ways.
Some bolts are stuck and dry so need to be removed and oiled, refitted.
If the headgasket is leaking I can guarantee 100% that at least one bolt is loose.If you don't catch it early , it'll cook a few times, that'll make it smoke after you destroy the valve stem seals....that's the only thing that makes them fail.........remember everything fails for a reason.
I've stripped lots of engines prior to machining and rebuilding, I used to ask what was wrong before stripping, later on I just used the reverse build method to work out what was going to be wrong before I found the problem.
I've even rebuilt a Ford V8 that had a broken head bolt and coolant leaking from the gasket into the lifter chamber.....that's ALL it takes, just one bolt.
To go to the next step, if you do decide to take off heads and change gaskets ....will you see any damage to the gasket? well 9 times out of 10, no you won't see anything....because the gasket was never faulty.......maybe it's a crap car like a Mondeo or similar, often they don't get changed until they blow a hole between cylinders.....that only happens AFTER the bolts go loose.
Ok, so you've got spare gaskets. ....All gaskets need sealer (new headgaskets have an invisible coating) The old fashioned stuff was shellac, alcohol based and fuel resistant. RTV is the modern substitute, it's all the same stuff, different labels , different colours but it's all essentially the same.You just want a light coat both sides, put together to squeeze out excess, pull apart to remove excess....assemble. Even the composite head gaskets are reusable so long as you don't leave lots of the gasket behind on the block or head.
Part suppliers don't want anyone to know........it's bad for business.
As for mechanics, most are just parts changers and that's all they'll ever be.....but it's still bad for business.
Car magazines....???, they're only for entertainment, nothing else.
Do I have a thing against car magazines?
Well yes, they're the true car enthusiasts worst enemy.Scamming you into thinking you need crap quality aftermarket parts which WILL destroy your engine.
quote from barryboys.
Yes, yes, yes, that might be so, but you're clearly missing the bigger picture.....