Project Big Blue

Selahdoor

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That must have been one of the typical people they hire these days who don't know anything more about cars/trucks than their computer will tell them.
Ask them for a light bulb, and they have to ask whether your truck is diesel and 4WD or not...
 

Thewespaul

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I had the heads decked this week just havent had a chance to run out and pick them up (my machinist is about an hour and a half away) this week I purchased the fuel shop in Austin I had been leasing some space and equipment from for the past two years and travelling about a hundred miles each way to build each pump, this weekend I am starting to move all of the equipment and tooling from that shop down to my shop in Bulverde so I will finally be able to really push out a steady volume of pumps and really cut down on my costs, been really swamped with getting things together to move this antique and irreplaceable equipment the hundred miles and quickly set it up here so I don't fall too behind on pump orders. Hoping to get a lot of the bigger equipment moved this weekend before the poor weather sets in this next week. Plan is to pick up the machined heads on my way up to Austin in the morning and reassemble the engine next week when the rain comes.
 

Thewespaul

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On one of my return trips coming back from the fuel shop I picked up the freshly machined heads and got to work getting the engine reassembled. First thing I did was use a small handfile and deburr tool to clean up any sharp or loose edges on the head from the mill and flush all the ports out. I pulled the springs out to clean the guides and seats and installed comp 910s while I had them out, not out of necessity but just an extra precaution with the closer valve/piston clearances after the machining.
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While the heads were drying I modified the head gaskets and gave them a light spray of copper coat, cleaned all the studs and installed them with fresh arp lube.
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Next I prepped the head surfaces for setting them on the engine.

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Heads on and torqued to 150 ft lbs x3
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Thewespaul

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Cleaned up a few things and got the engine together just about ready to install.
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I added the accessory brackets and set the engine in last night, just ran out of light to get the trans lined up, should be running soon.
 

IDIBRONCO

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Like you guys, I'm no expert either. To me it looks like Wes cleaned the surface off with something like a Scotch Brite pad on a die grinder. This may affect the way that the finish looks somewhat.
 

Booyah45828

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Looks normal to me. Looks like it was a skim cut done on a head resurfacing machine. That machine is technically nothing more then a 12"+ dual insert fly cutter. Being that it was a skim cut and is a picture I'd say is what's throwing some off.

He can check the surface finish Ra if he'd like, but I'd say it's fine for the gaskets he's using. If it was an mls gasket then you'd be looking for something really smooth, but it's not.
 

nelstomlinson

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I’m no expert here but that head finish looks horrible! The machine shop must be using a fly cutter or a dull stone.
The machine shop I'm using tells me that he cannot mill the IDI heads, because the inserts are too hard, and they'll damage his cutter/chip the insert/gouge the insert right out of the head.
 

Booyah45828

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I don't think it's the heads, so much as the pre-chamber. They're made of inconel and it needs to be machined different then most metals.
 

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