Your First Engine Job - This Is What A BAD Cylinder Head Looks Like 

I'm actually a ballerina but I face enormous discrimination in my chosen field, so I play a mechanic on RU-vid for the time being.

@@UncleTonysGarage your plié moves are so graceful, an inspiration, thank you sir.

​@@UncleTonysGarage The day you appear in a tutu and toe shoes in a video, my life will be complete! Brava, Prima Dona!!

Jim.... This is why She left you... This is why...

@@UncleTonysGarage that explains the slim look

That sealing trick is awesome!

Yes, but check it DRY. A bad guide will still seal if there's oil inside.

Do you have to remove oil from the guide before checking the suction?

That's the plan for the motor currently in the jeep. This is its replacement for daily driver use

@@UncleTonysGarage Thanks, Tony, would like to know how YOU consider the cost of new, flashy, aluminum head vs redoing/prepping a stock head, intended purpose and all.

@@landontesar3070 the one he's building right now is going to be a stock replacement. He said the engine in the Jeep when he pulls it out he will build it with the Edelbrock head the guy talks about . Just read what he wrote.

Could be stretched bolts as well. But he did make mention about doing the check In the video when he found the bolts that were not as tight as the others.

I would almost be tempted to redo the seats and guides anyway having taken the head to this point, not terribly expensive

You might like Vice grip garage. he does a lot of rescue/revival of older vehicles, and other stuff as well. And he's hilarious and very VERY knowledgeable about cars and the things that go wrong with them. he and Uncle Tony are my favourites, with a close runner up of 'superfastmatt'.

@@kellismith4329 machine shops have gotten insanely expensive over the last decade. I've no idea why, but I can buy brand new fully dressed up aluminum heads for less than it costs to have double humps rebuilt. Granted the aluminum heads are Chinese, but I know plenty of people who say the quality is 'okay' and the price is nothing. perhaps more to the point, I can get vortex heads from summit, ready to go pretty much, for less than doing valve guides, seals, and seats and new valves. Hell, a shop quoted me 1800 Canadian to take an already stripped block, magna flux it, steam clean it, run the usual checks, overbore, and cam bearings. And they would charge 'in addition' to deck the block. I no longer plan builds based on cores, if it's not a great running engine to my certain knowledge, then I don't want to take the chances. Gone are the days when a kid could drag a motor out of the junkyard, strip it down, get the machine work done, and build it themselves to save money. Where I live, you can buy a turnkey crate *with transmission* for less than it costs to build a tastefully designed performance 383, and the crate motor has a warranty. It's sad. Maybe its different where you are, but recently Uncle Tony went to sa shop to get some work done, and when they quoted the price, he just left, saying the same thing: Not cost effective. If anyone knows why this is.or any tips, I'd like to hear it... I only ever built one engine, and loved it, but I can't pay three grand for the privilege of spending hours building a motor I could buy for much less than the parts cost...

400.000 klm they are only just run in. lol good old jeeps.

Benjamin, is that what supports the thinking for these massive intake plenum manifolds with fuel injection on 90's Dodge/Jeep?

I have a bunch, the only one I had that wasn’t cracked like that was a new casting from Alabama cyl head

Exactly my situation!

thats why its important that they have a good seal, not only to hold the combustion pressure from being wasted but also because a good seal has more surface area to transfer heat to the head away from the valve

Not so fast - in today's day and age, you really need to check what you're getting, as the farther we go in time the more low quality work there is out there, waiting to bite someone in the ass. But I agree with replacing here. Trust, but still go at it with calipers and dial indicators...

The backside of the valve cleanliness... or swirl polished, and under cut head, at least a 3 angle valve job. Gettin into race talk now, but it does free up power to a point.

believe replacement piston sets, stroker or not, have different skirt designs

I second cutting it up! Best way to check casting thickness!