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Sooo, My guess is the chain has been loose for a while. Eventually breaking and wearing a hole in the cover. I hope to have the gear and chain off tomorrow after I find a puller. At least I finally found my mystery oil leak.

Since this was an easier job that I expected I'll be putting in gears from Leroy once funds are available. Does it matter what direction the chain goes in? Is it marked?

Thanks for your concerns but... The truck ran like hell since I did the head gaskets and right up until I noticed the broken half chain link. I have no reason to believe it has any issues other than the chain and possibly scared gears. Also noticed the missing link after the timing cover was...

Ok, went home early and downloaded... I'm starting to think I'm just waaay overthinking this. I'll tell you what I think I need to do, you tell me if I'm wrong... Find tdc Pull everything apart Inspect parts & replace if necessary Install keyway and crank gear with mark at 12 o'clock...

Thanks, I'll have to wait till after work to open and download what's in my messages...

Okay, here's where I'm at. I have everything stripped down to the front engine cover. Next would be to remove the crank balancer and pulley. Then remove the injection pump bolts. Next Step would be remove the front engine cover. I'm going to try and find top dead center before I remove the...

Engine is an early #506, with 105,000 original miles, 5521 ip, feed the beast, 5/8" brf, new bosch injectors, 60 g's. And obviously new head gaskets. No blow by or oil burning I just replace the front crank seal a few months ago. The Vac pump is less than a few months old. I'm assuming it has...

I still don't really understand the concept of the timing. I'm assuming you guys are going with: the old chain is broken/stretched so let's put on the new one and start from scratch? Reason I ask is because I'm sure I could remove everything and put it back together with the new chain and the...

I just looked in Leroys site, a gear set will cost roughly $650-$700 by the time I get it. Maybe someday, but not possible now.

Most of my front accessories are all ready new, when I did head gaskets. I won't be using gaskets, still have a 1/2 tube of "the right stuff" What's the point of finding #1 TDC? So all the timing marks line up? Easier to put back on? My flex plate is locked with vise grips, won't be going...

New guy again, thanks to everyone here that helped me replace my heads and gaskets. Truck runs great... That is, until a chunk of timing chain fell out of the pan while doing a service. So, is replacing the chain difficult to do? Can anyone walk me through it?

Got her back together enough to start and idle. Starts great, runs great & no leaks

Sorry guys, got busy at work... Injectors are set at 2100psi Got the left side heads ready to go on. Hope to have her running by the weekend

I'll look into that tomorrow. Hey, sooo... What really causes the cups to wear like that? Excessive egts? Injectors? :sour:

I'll talk to them on Monday. Not sure what pressure they'll set them too. What should I tell them?

This head is by far worse than the other in regards to cracks and general condition of the cups

Their being rebuilt with Bosch nozzles as we speak

Somehow the need to satisfy everyone's curiosity outweighs the risk of hearing the approximately 30 "I told you so's" I'm expecting... Here's the driver side heads. #7 piston is fine, no sign of damage at all

I'm well aware of how bad GMX turbos are but, like I also mentioned earlier, I don't have the funds at this point to upgrade it. I'm happy I found one for relatively cheap so that I can at least get back on the road. It being worn out was an unexpected expense. I mean, I was expecting some...

Ok, I'll do both.