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  1. O

    83 6.9 final nail in the coffin

    I currently have ARP studs for the 6.9. I base my desire for the 6.9 upon research. The greater insurance against the cavitation issue my #1 reason and the ARP studs will hold together anything I throw at this build for the dump truck. Thinking Moose Junior, typ4 cam and the first gen Banks. I...
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    83 6.9 final nail in the coffin

    @ Dieselcrawler: no 7.3. Only 6.9. Thanks
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    83 6.9 final nail in the coffin

    typ4 and dunk: the bores are not sloppy, just gouged and smushed in in the one area. I can certainly try a hone. Dieselcrawler: Yes I would absolutely consider that. I don't need a 87 6.9, I have one waiting for me for a monster build. Any later non cracker block engine would suit me well...
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    83 6.9 final nail in the coffin

    I picked up a typ4 Friday actually, and I showed Mel the gouge. He accepted the cam as a core, although was a bit unsure himself if it would be reusable. He figured the lifter turned sideways. Helluva good guy, his wife too. It wasn't until yesterday cleaning everything up immaculately to...
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    83 6.9 final nail in the coffin

    Unfortunately I have no money for any machine work now and time is not on my side. This was a do or die from day one and it's not meant to be. No snowfall here in pa means no income plowing and hydroseeding is minimum 6 weeks away. Tomorrow I'm gonna call my machine shop guy and tell him cease...
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    83 6.9 final nail in the coffin

    Don't know. Hoping for some suggestions. icanfixall: do you mean "that can be" sleeved or are you saying that has been sleeved all ready?
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    83 6.9 final nail in the coffin

    I think the engine must have ran dry for a short period. The way the old heads were cracked between valves, I think possibly on a 10 degree day it was started and driven flat to the floor, late for work style, turbo screaming spiked egt's. Possibly the cold to extreme heat cracked the heads, and...
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    83 6.9 final nail in the coffin

    The one on the left could most likely be filed so the whammied protruding metal don't catch the lifter. The one on the right closest to the front of the block, there is nothing to be done. It's wore into the bore. I'm clueless, almost like the lifter spun repeatedly? Sent from my LG-H810 using...
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    83 6.9 final nail in the coffin

    Sent from my LG-H810 using Tapatalk
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    83 6.9 final nail in the coffin

    I noticed on #1 cylinder the holes for the lifters were gouged with a nasty ring in the one and the other looks like some animal was beating on it with a hammer. The lifter catches and drags on it. The cam had a nasty gouge on it like the lifter turned sideways. Needless to say, I'm not going...
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    6.9 head resurfacing

    Thanks for the spec sheet. Could anyone please explain WHY the specs on these heads are so critical? Will valves burn or is there a clearance issue? I'm just curious. Thanks
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    6.9 head resurfacing

    Ok so I just found the article in the tech section I obviously missed before. Never mind I have all the info I need. Feel free to delete this thread. Oops. My bad.
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    6.9 head resurfacing

    So I finally got my heads dropped off at a local machinist that came highly recommended from everyone I talked to. 42 years in the business. He did a double take when I said 6.9 idi. He was thrilled to see nostalgic old iron but quickly changed his tune and said the pre chambers suck. Lol. My...
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    In need of a 6.9 passenger side head

    The more square retainers... Sent from my LG-H810 using Tapatalk
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    In need of a 6.9 passenger side head

    The more bowed out retainers on the "85" head Sent from my LG-H810 using Tapatalk
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    In need of a 6.9 passenger side head

    Well good news. Made it to my local awesome salvage yard and I was treated to a pallet (yes, a pallet) of 6.9 heads. Sifting through them I came across two sets. One was labeled 87 6.9 and I noticed the rocker arm keepers (excuse me I don't know the actual term) were much more of a 90° than the...
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    In need of a 6.9 passenger side head

    I found a set of 7.3 heads with a recent valve job. Can I get a confirmation on whether or not my 6.9 studs will work? If so I'm grabbing them this weekend. Thanks.
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    In need of a 6.9 passenger side head

    Yes I do have studs! Interesting... I will highly consider this : ) Thanks for all the replies everyone.
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    In need of a 6.9 passenger side head

    I'm going to call the salvage yard with the 6.9 ambulance today and see what they want for that critter. If I can swing it, I'll get it. Best case scenario, I yank the heads and see no cracks I'll slap them on the first gen '83 6.9 I'm currently working on and I'll be happier than a pig in poop...
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    In need of a 6.9 passenger side head

    I originally had that intention but I figured why strip the 6.9 to put the bb injectors, newer fuel pump and turbo on when I could just stud the heads swap engines and be rid of the cavitation problem? I absolutely refuse to put money on a dead horse. 124,000 miles and no SCA ever put in? ( the...
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    In need of a 6.9 passenger side head

    Here is the worst one, if you zoom you can see its all the way to the valve seat. You can catch a finger nail on this. I consider myself to be a very tenacious person but THIS project has been a pain in my rear from go. If it was the monster build with no time schedule or fixed budget I wouldn't...
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    In need of a 6.9 passenger side head

    Well that's it, this project is over. Driver side heads cracked as well. Don't care if it ran before I'm not putting cracked heads back on a engine. 1st and 4th between the valves. I believe I will be selling this for parts to anyone interested. I'll simply have to fix the return lines and...
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    In need of a 6.9 passenger side head

    This "quick" 6.9 reseal and stud project is turning into my own personal Oak Island Money Pit. Had my head checked today. Between the intake and exhaust valves 3 out of the 4 cylinders are cracked. I have no idea. Precups and pistons look great but not the rest of the head. Does anyone have a...
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    Valve Guides Help Please!

    I spoke with Mel at Conestoga today... What a awesome, knowledgeable cat! Helluva nice guy! Got many questions answered. @ riotwarrior: Yup. Tomorrow I'm going to a shop and having them checked. If they need work, oh well. I'm already one month behind, what's a little more time. Peace of...
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    Valve Guides Help Please!

    Finishing up the valve seals on the passenger side head off the early 6.9 I'm working on, I have made a horrible discovery that the guides are wore. The driver side head I finished the other day is super tight. Little to no play at all, I was thoroughly impressed. Now this side has me scratching...

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