I love every video you make, please never stop.

Your videos have great info on them, they have helped me understand the 4.7l a lot better. Keep doing what your doing!

I'm glad to see your still at it!

Just found your channel. Love it and subscribed. Always hard to find videos for these type of cars.

Just purchased valve stem seals from your link. Hope this helps you on future orders. Thank you Martinbuilt.

Im replacing valve seals,upgraded rocker arms and "lifters" on my 04 overland. It being done with the heads on the motor and cams installed. Im using the miller tool 8516A knockoff. Highly recommend a ratcheting 3/8s breaker bar for this. Found it at H/F. Saves the hands and reduces frustration. Also picked up blue 1/4in. poly rope to feed into the combustion chamber. The ratcheting breaker bar also worked great turning the crank.

Performing this service engine in, is laborious. Having installed a new engine twice into my 2001 I can tell you with the right equipment, either a chain fall or a cherry picker engine hoist is faster and more important more precise than gimping in the valve springs. Dropping a valve into the cylinder is a night mare. I've tried the string approach but inevitably the compressor stopped and the valve slid into the cylinder. The gods were with me that day and I was able to repair the $99 Porter Cable compressor, wire had grounded out, and almost cost me an engine.

Love your videos, everything is much easier now. Thanks! Keep doing it sir.

You can still use the socket when head is on vehicle. We used that process on a Honda oddessey. You can use the same proccess to install the keepers aswell

great points about the new and old valves, springs, and seals, and their respective weights. It seems like performance improvement is there for sure! The 4.7 is not the craziest v8 out there, but i think you are creating a monster!! 🎃⚡️💪

Nice detective work on that valve train Martin....

Im already subscribed you just answered what i was going to ask in your video i was getting ready to ask if i could put those springs in my 06 4,7 lol thats funny Thanks a bunch!!!

Those differences would remove almost a full pound of valvetrain weight. I can only see that as a good thing. But im curious of the 08 spring rate vs the HO springs.? but good info thanks martin!

Great video thanks martin.

Thanks Martin that is some great information

Can those 08+ valve stem seals be used with the h.o. springs? I like how that style keeps the spring from deflecting. Or would you recommend running the 08+ spring/seal in place ofthe stock the 99-04 h.o. valve springs. Also just a thought, the 3.7 exhaust valve spring comes with a similar design that keeps the spring from shifting. Not sure what years but I saw them in an '04. I'm going to try and get a few to see if the h.o. valve springs will fit in them.

Dude, you're awesome! Please, work on my 4.7 2008 dodge ram! 😢

Hey Martin, just a thought, but something that I have done on another tool that had threaded holes in aluminum similar to your design, I drilled out and used heli-coils loctited in giving my aluminum tool steel threads.. just an idea 🤷‍♂️ Keep up the good work!

Cool cool cool video Martin!

Can I put the 4.7 in the 02 grandcherokee? And does it have the same problem 0with seats dropping

Another great video. Really appreciate your attention to detail. Do you think a ZJ 5.2 V8 would run better with 180° thermostat?

Awsome video thanks learn a lot from your videos ty. If I may ask you a question sorry to ask but I'm stuck maybe you can give me vise I have 2000 4.7 not h.o anyways I have changed lifters three times I have changed the timing chain and gear I have done exhaust manifold gaskets I keep fresh clean oil in it all the time I just cannot get rid of the ticking noise when I first started up ticks like crazy eventually it goes away but it's non-stop every time I started out I'm lost I don't know where else to go it's got good oil pressure but the oil pressure does drop as you drive it any advice would help to key in on a area I appreciate it thank you

Hey Martin I have the same make and model Jeep as your WJ and was seeing if you could help me out. I have rebuilt my engine as a result of a head gasket leak and a broken intake. I have gotten to the point of reinstalling my intake manifold and I’m having a difficult time figuring out which vacuum hoses go where. The main one I’m unsure about is the nipple on the back bottom of the intake and where it goes, and where the hose that come from the oil fill goes. If you have a video of yours or a diagram you could reference me to it would be much appreciated. Thanks!

Hello Martin. We have talked on this before. I am replacing the short block this spring in my 04 WJ, dropped a seat in number one. Beat up the piston a bit but didn't trash it totally, but the lower end has 165,000 on it and I feel it's time for a fresh one. I put remanned heads on it however I believe they didn't address the guides as I get a oil puff on startup after sitting all night indicating bad stem seals. I currently have the solid lash adjusters and HO cams with larger injectors. My question is do you know if the late valves fit earlier heads? I am having the heads done as well and I will probably hit the ports a bit with the die grinder as I cannot leave well enough alone. I have a set of 09 cams I got out of an Aspen 4.7 and they are going as well. I would like to put the later springs and seals in as well. Thanks in advance and say hello to your Michigan transplant friend, Rick I believe is his name.

Do you have those valve retainer tools for sale?

Martin, how do I buy one of your custom valve spring compressors? I'm planning to replace the stem seals and lash adjusters on my 05 WK.

Martin, have you done valve seats yet? My 02 Limited 4.7 mildly dropped #7 intake seat, no damage. I was wondering how easy it is to drive the old ones out, along with guides? We used to do heads on 3.0 Mitsu's and other Mopar's by driving the old seats and guides out, freezing the guides and seats, heating each and driving them in by hand, hand staking the valve seats, then performing a complete valve job, grinding, lapping, new seals, mild port and polish on special cases. I was wondering if anyone can say whether its easier and cheaper to DIY the head job. have the machine shop do it, or buy 2 reman heads (I'm doing both heads to be safe).., on 4.7's we put new heads in under warranty, or when the motor ate itself, a short block and raw heads, then assembled with the old cams, rockers, new lash adjusters, basic valve job, and reassemble/reinstall. I can tell you from working in the dealer many years and owing 3 currently, 4.7's are not cheap engines to rebuild of repair, nowhere near as cheap as the LA's, Inline 6, or RB Mopar motors are/were.

Hi Martin. Would You check what kind of valve stem seal are inside plastic cup in 2008-2010 heads? I mean is it possible to dissmantle spring from cup and change only inside valve stem seal instead buy complete original set with valve spring? It would be useful for person watching You from other country where parts are much more expensive then in US.thanks a lot for your valuable videos.

Hey Martin, are H.O beehive valve springs better than 08-13 version? If so can H.O springs be used with 08-13 valve stem seals?

According to air ram theres no difference between the non H.O heads and the H.O heads they flow identical, is there an advantage to switching to the 2008 heads on a regular 4.7?

Is there any way to catch a failing valve seat, any tests you can do?

martin can you put 08 ho heads on a 2000 stock 4.7?

Can you just buy the 2008 4.7 heads and up and put it on your 2004 4.7 or no

How different is the exhaust on the 08 compared to earlier 4.7's?

How do you fix a valve seat drop on a 3.7 liberty how do you do it do you go to the junk yard and buy a new head or is the engine junk!?

I like to get one of your valve spring compressor for a Jeep engine 4.7 like to know how much.

Need martin come down give me Hand 2001 it has one hundred eleven thousand on motor I've replaced everything from the gearing to hubs to brand knew break knew frunt end down to frunt rear lights all halo the engine I replaced radiator starter ac battery and it started ticking so I replace the lifters and lifter arm realy don't know what I'm looking for in the head parts put it back together and the sound didn't go away maybe worse rockers there wasn't and that dropped and the rockers whare all good still so what dos that tell u I don't know need help I put so much in this veacals just wanted it to be realible and I'm not that good of mackanick and the ticking is coming from top of the head that I just replace rocker and rocker arms can u tell me what it the priblem

can you make a head removal video?

YOOOOOOOOOO do you have an available spring compressor???????????? I live out here in henderson.

I so want that tool.... lolz u need to make it and patenit

Shoot me an email when you get a chance, Would like to purchase a couple of your valve spring tools to rent out. Have you tested this tool while the heads where still on the engine? Any issues around the firewall? it looks like it should clear everything.

Can I pay you to do valve seals on my 4.7 wj?

I pick a random ass video and your in the same pic-a-part i use.... so random.