How To Set Valve Lash On A 6.6 Duramax Diesel Engine

[@2secondslater]

Thanks for being someone on KZbin that tackles the diesels. Best wishes from Australia

[@theislandsc]

I just set the valves on my LB7 after replacing the head gaskets. Along with doing the injectors it makes the engine run a lot smoother and quieter.

[@longrooflawson4959]

Dont even own a diesel but love your videos. Keep em coming! 🇦🇺

[@evinlong109]

As someone who builds these for high performance I typically set @ 11 thou. Not enough to make contact, less noise and pick up some power. Found it on one of the forums and it's a heck of a way to pick up the power that's been lost

[@MrTrueshoe]

Best advice I’ve heard for people in a long time..” Video yourself so you can watch it and not loose sleep at night” epic and a good idea..

[@michaelblacktree]

I'm a little OCD about adjusting valve lash. I like to use 2 different color Sharpie markers, to mark the ones that have been adjusted. During the first pass, each rocker gets a tick mark from one marker. Then I do a second pass to double-check the lash, using the second marker. I'm done when every rocker arm has two different colored tick marks on it.

[@DEBOSSGARAGE]

Each his own. I record all my work on camera, then review it after the editor does his thing. Then I post it on youtube and wait for the trolls to tell me what I did wrong.

[@michaelblacktree]

I'm starting to think KZbin has a quota for people saying you're doing everything wrong in each video.

[@devoncoolman88]

At least your honest rich.

[@ClassicJunk88]

wow what a process. you did an excellent job making it more straight foward with the graphic and everything.

[@ram_diesel_power6039]

This video makes me appreciate my 93 w250 with a Cummins all that much more. Good video.

[@mrczs111]

Love you’re videos, hilsen (greetings) from norway🇳🇴

[@TheCanadianBubba]

Merry Christmas to you, your family, and crew !

[@jizzypimp123]

My wife has started watching your videos. I know because everytime a cat appears she shows me ha

[@truereality5873]

I’m a little confused if the exhaust valve is moving down that isn’t tdc. That’s the piston at the bottom of the bore. Tdc compression would be when both valves are shut.

[@danielmauer8406]

I noticed that too, he says to set the intake and exhaust on number one but the way he set it up the exhaust rocker arm has started to move which would not be at a place to start adjusting

[@KooshdaakaaGarage]

Thanks for the LB7 content! I'm gearing up to do the injectors on mine this spring 😀🤘

[@Bradygoodz]

Love your dmax vids. They’re great trucks 💯

[@fascistpedant758]

Sorry if I'm off topic and a little late, but I just watched [S2 E11]. I would just like to note that if you're not spooling up the primary compressor (the large turbo), then it's probably restricting airflow to the small turbo. It might be interesting to throw a vacuum gauge upstream of the small compressor to see. Have a great holiday season (you deserve a break) and the best of new years.Thanks for taking the trouble to produce and share your work.

[@kolby3601]

i forgot dowel pins for the rocker shaft its been running great for 1000 miles. how crucial are those?

[@karldanger44199]

Hey my fuel injector lines on my lb7 have come loose like 3 times since doing my head gaskets, seems to be the only thing backing off. Any suggestions? I've tried putting out on them wouldn't think you'd need to snipe brass fittings but it's annoying.

[@SSMedic]

I know that you have done this before on a cummins but could you do a indepth, start to finish valve adjustment on a 24 valve? The graph that you had on the side of the screen was awesome on this video as well.

[@cannonshot7778]

why adjust valves at TDC? could you do it on a compression or power stroke as the valves will be closed anyway.

[@zackk695]

Would the LLY be the same measurements as far as 11 or 12g?

[@WilliamBos72]

Just reinforces that if i ever go diesel, it will be a Cummins powered Dodge. Thanks Rich.

[@jdrok5026]

Cummins is also fairly complex depending on variant. Yes a v8 diesel with 4v per cylinder is going to be complex somewhat.

[@tylerroberts5704]

William Bos I currently own a 2nd gen 12 valve and an lb7. I can tell you that the engine is great but everything on the dodge is Years behind technology wise. The tranis are weak up until the 2010s. The front ends and steering system are weak on my 96.

[@yourchava]

@@tylerroberts5704 have owned a dodge, cummins was good, rest was junk had the death wobble

[@josezaragoza9394]

Does this apply for the 16 lml platform?

[@sahanrajaratnam8681]

I feel like you should do a video series on rebuilding a duramax, Cummins and a Powerstroke. Then compare them all at the end

[@DEBOSSGARAGE]

We did Cummins already, and we will be getting into the Duramax for the C10. Won't see a powerstroke on the channel anytime soon

[@jdrok5026]

Really depends on the variant a lb7 can't speak for a lly lbz lmm lml or the l5p on build quality and where the engine becomes a pain. Same for 7.3 6.0 6.4 and 6.7 and same for the 12 24 and newer 5.9 and 6.7s.

[@gman1035]

Great solid data man, haha yeah yeah have a good holidays.

[@bassdaze]

must be nice doint valve lash on an LB7... LLY not so much, need a long rachet on harmonic balance to set tdc... also note on MA spreadsheet doesnt it say turn 10 revolutions after setting lash and recheck spec?

[@AntonioClaudioMichael]

Good video Daboss and Merry Christmas brother

[@davidsmaus6531]

I your have excessive valve lash, would it worth checking if you have a bent pushrod? I know on these if they get over reved the pushrods like to bend.

[@therealbeaker]

How long did it take you from start to finish? Years ago under warranty GM used to pay 12hrs to do that job. Then over night they changed the labour time to 8hrs and only difference in the disassembly and assembly instructions was they left the serp belt on.

[@andreranch6161]

therealbeaker pays 10

[@MINTBERRYCRRUNCH]

I love lb7s, they sound awesome and make nice power. Its too bad about the injectors, is there an injector replacmement that wont fail as fast as the stock injectors fail? Can you save the stock injectors with taking extra care and using fuel additive?

[@DEBOSSGARAGE]

Better filters like a Fass help.

[@jeffbell1745]

The problem is not the injectors themselves. The problem is that GM fuel filters only filter to 7 microns while the injectors are only rated for 3 microns. Over time the injectors get wore out from having larger particles forced through them than they are rated for. The solution, as Deboss says, is to put an aftermarket fuel filtration system on your truck such as FASS. It's a little costly (around $650) but still cheaper than replacing a set of injectors.

[@aaronschocke5463]

A great deal late to the party, here, but you may be like me an have parked the truck 3 years ago. Lol. Yes, there are better injectors now. The OEM injectors featured VCO (valve concealed orifice) style nozzles. The needle directly covers every hole in the injector on a tapered seat. Any wear can cause the needle to veer off center and expose any one of the holes, causing it to leak. SAC style nozzles are available now for LB7s and they only have one hole to seal. Lincoln Diesel offers them new with a 3 year warranty and unlimited miles.

[@scottycollins131]

You guys doing the project car challenge in 2019? Ferretti posted a video about it tonight. Start a new car build! Take the quattro and a Nissan Z car. I want to go too.

[@brandoncole6358]

So to do valve lash on my 2.3 gas Isuzu with the valve covers off and the battery disconnected I can turn it over without it starting? It's carbureted.

[@johnciancimino6504]

What is your opinion on the 6.7 powerstroke and it’s durability.

[@jacksmith3189]

Good information Thanks

[@j.onofre6613]

Same lash for exhaust and intake valves?

[@eurowerx4267]

Yes

[@bryanwelton1442]

Hey buddy i got a question for u how to tell when i should replace my injectors in my first gen Cummins? It has at least 250000mi. love your vids been watch n u for yrs thanks for the good vids

[@frankram2303]

I did mine but when I start my truck oil comes out from the rocker arms on the diver side is that normal I don’t see videos on that ?? Leaks lots

[@moo12111]

Same procedure for the LLY and LBZ?

[@olddironn3084]

Just wondering because i have no idea but would you set the valve lash on a stock 1994 chevy with a 350, I want to say no but just checking

[@lvnsnaperify]

Yes but they are done very different

[@jdrok5026]

Yes if there is play set your lash to zero on hydraulic tappets.

[@gregoryscott9767]

Hey Rich. Is that valve set good for a Lly as well? Thanks Rich. And keep up the great videos

[@DEBOSSGARAGE]

Yep

[@gregoryscott9767]

@@DEBOSSGARAGE thanks Rich. Merry Christmas to you and your family.

[@seancola]

Do the valves get tighter or looser over time? I've tried the feeler gauge and it doesn't fit most of the valves I tried. I've never done this before. I'm Pretty sure its tdc. Any help would be appreciated. Not sure if they have ever been adjusted. It has 140k miles

[@seancola]

Well I ended up figuring it out. Used a flathead screwdriver to line up the marks on the balancer and engine for tdc. Vice versa. Got them all adjusted. Did the injectors, water pump, thermostat, and put a fass lift pump. She runs great. And no fuel in the crank :) Thanks for the videos.

[@gasparcalderon666]

Do a video on the new L5P duramax

[@purelyinlove90]

Mr cat 😂👀

[@1johnnygunn]

They (cats) are really judgy, aren't they?

[@shanek6582]

Can you adjust them with the injectors out?

[@tylerroberts5704]

Shane K , yes. It’s easier to turn the engine also

[@iwtommo]

Rich, i just snapped a glowplug off in the cyl head of my parents van. Any tips? Do i remember you saying you were going to do a video on this? Ta!

[@DEBOSSGARAGE]

Same as removing studs from a Triton. Check it out. We will have a video on GLow plugs in the next month or so

[@iwtommo]

@@DEBOSSGARAGE Lifesaver, thanks a ton.

[@tonystone6955]

Basically the same procedure for an lly?

[@DEBOSSGARAGE]

No, LLy had them on the outside of the valve cover but hey, might as well set the valves while you are in right?

[@theonetheonly5785]

Everyone hates doing injectors I hated doing the cp3 fuel pump more then anything

[@shoreline8686]

What if you do not have the injectors out. what would you do to turn engine?

[@isaacsalinas2686]

I know it's 3 years late lol but you can pull the glow plugs to rid the resistance

[@shoreline8686]

@@isaacsalinas2686 good idea thank you

[@archA64]

Cummins or Duramax? In Australia these are both becoming more popular in Nissan Patrols as the Solid Axles and coils are unreal but your thoughts?

[@DEBOSSGARAGE]

12V is simpler and cheaper. I think Duramax is cooler and less common. Ask me again when I finish our Duramax C10 swap

[@archA64]

DEBOSS GARAGE Thanks champ loving the channel mate!

[@jdrok5026]

12v for cost duramax for fun duramax engines also weight quite a bit less. About 800 to 1200 really depends on your suspension which is a better size.

[@archA64]

@@jdrok5026 Weight is definitely a factor for offroad performance 4x4 and for a tourer (mileage hence why LS no good) but as you said they are more expensive. kzbin.info/www/bejne/bpiyl6uXeaqHfas or ISV5.0 Cummins kzbin.info/www/bejne/iXLMf5-rmKicfJY

[@jdrok5026]

@@archA64 I don't know how good the 5.0l Cummins is. But the new 2.8l is light idk it's potential tho so there's that. A duramax is potent but has issues so does the 5.9 so does a 855 or a 318 Detroit which Detroit's just stay away from them they are cool but heavy making the 5.9 look like a pipsqueak in weight.

[@RobertKohut]

Nice!!

[@kennedy796]

Hey rich, i have a question. I set my valve lash on my car by making sure the rockers were on the base lobe, but i have a light valve tick and popping through the exhaust. I suspect it is just dirty since running a can of seafoam through it seemed to help, but it just went right back to ticking. Do you have any suggestions for what i could do with this? Hoping to not have to pull the head

[@DEBOSSGARAGE]

What car? If it didn't do it before, it is likely something you did...

[@kennedy796]

@@DEBOSSGARAGE 2001 accord. Setting the valves didnt change the tick it just showed up one day and only ticks when warm on idle. Loading the engine rids of the tick and trying a few different ways of lashing didnt seem to fix.

[@kennedy796]

@@DEBOSSGARAGE it is a replacement engine from japan that didnt have the problem beforehand.

[@dhmarkley]

Sounds like you should support your local small business mechanics shop and let them take a look at it.

[@DEBOSSGARAGE]

Check the lash again, asap. Eric the car guy has a video on it if you have any doubts. I would watch it and open it up again

[@pdfmotovlog144]

Zip ties n bias plies sent me here

[@brandon4798]

can a boost leak burn up your turbo on a lb7? had small boost leak drove it for over 30k worked great tons of power for what it was doing. one night blew off an intercooler tube and drove it 5 or 6 km at around 70km per hour trying to keep rmp low.. when parked noticed a burning smell and a noticeable loss of power ever since and more lag taking a longer time to build boost. thanks

[@lanceroark6386]

Rich, can I highjack your video? I’m going to put an 83 Suburban on a 2007 HD2500 chassis, and then power it with a 5.9. If I were to add ABS, would the Kelsey Hayes need anything other than power, input from the wheels, and brake line connections?

[@Rangband1]

Got one for a 2nd gen 5.9L ? 🙂

[@DEBOSSGARAGE]

kzbin.info/www/bejne/opO9poiklNOkpMU

[@rhunter3406]

Anyone on here having issues with cold coolant leaks on their duramax? my oil cooler has been resealed twice and am still having issues. Problem is there before and after head gaskets. Only leaks in cold weather.

[@DEBOSSGARAGE]

I've had the coolant line to the turbo leaking and causing some scratching heads. Depending on the temp, sometimes it would leave a puddle and sometimes it would burn off from the engine heat. Something to consider if the oil cooler has been done twice

[@HOTRODRICH]

Kitty, new kitty

[@Andrewlang90]

Miss Judging eyes is not happy with your lack of treats in the shop lol.

[@DEBOSSGARAGE]

There’s plenty of treats scurrying through the walls

[@Andrewlang90]

DEBOSS GARAGE Lol, my bad. Good call. My cats are good mousers, but they try harder for the ones in the package when they are in the house

[@1johnnygunn]

@@DEBOSSGARAGE my bulldogge has treats in the yard, rabbit free thanks to him.

[@kevinbowers3917]

Meoow

[@troymassey71]

👊

[@williamsmilton6316]

?😥? Say what