Dan's ratty truck

[GreyStone]

now you've got me thinking. I do have a spare 4.8 laying around

Then it will be green streak!

 

[Dantheman1540]

It was hot today but got the motor out and pulled apart the top end. Everything looked good except one of the head alignment dowels looked like it was mushed. As well as one pushrod that had some strange wear on its side. Spun the crank and the cam looks good on all lobes! Probably pull the bottom apart tomorrow.

 

[Dantheman1540]

Then it will be green streak!

Green streak reminds me of when I eat broccoli and cheese casserole

 

[Tonyrodz]

It was hot today but got the motor out and pulled apart the top end. Everything looked good except one of the head alignment dowels looked like it was mushed. As well as one pushrod that had some strange wear on its side. Spun the crank and the cam looks good on all lobes! Probably pull the bottom apart tomorrow.
View attachment 250865 View attachment 250867 View attachment 250868 View attachment 250869 View attachment 250870

So what do you think caused that?

 

[Dantheman1540]

So what do you think caused that?

Probably from when I replaced the head gaskets in the truck. I must not have gotten it in the hole all the way or a piece of debris was under it. No sign not head gasket failure so I don't think it caused any problems.

The pushrod wear is very minimal. Really it's just some of the finish rubbed off.ay have been from me when I stalling it.

I'm stoked the cam looks good! I don't think I'll reuse the pistons no matter what but they look good as well. Really hoping the block checks out good. Would love to just throw a forged rotating assembly in it.

 

[Tonyrodz]

I must not have gotten it in the hole all the way

Oookaaayyyy

 

[Dantheman1540]

Oookaaayyyy

Well as you can see I just used force to get it in

 

[Dantheman1540]

I was also able to see the timing chain and it looked good. So either a main bearing spun or the motor was fine and I should have done more diagnostic work before I pulled it.

 

[Dantheman1540]

Last update on this for awhile as I'm not sure how long the machine shop will take to get to me but its all getting dropped off today. Still see no signs of failure anywhere which is kinda upsetting.

 

[Dantheman1540]

Engine shop owner found the oil consumption culprit in less than 5 minutes before we even unloaded everything. Turns out the other machine shop that went out of business speced and ordered me the wrong size oil scrapper ring. I installed them not knowing and even struggled to install them because they were so thin and wanted to bend and warp.

New motor rebuild plan is:
-Stock crank (if checks good)
-Gen 4 rods (if checks good)
-Forged JE piston
-9.6-1 comp
-LS7 Lifters (if checks good)
-LS9 gaskets
-ARP everything (if checks good)
-Melling High volume pump
-Same TSP cam 224/228 113lsa
-Same Pushrods