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One Piece at a Time: My 1985 Diesel Suburban

For y'all's consideration.


David

I get most/all my viewing entertainment through YT (no tv) and I have to say your channel is about the most enjoyable to watch from an editing, content, presentation wise viewpoint.

Damn, i wrote that and it doesn't make sense... :haha:.

Trying to say your videos are equal to your builds, both badass.

Obvious combo of skill and want, thanks for sharing :waytogo:
 
Trying to say your videos are equal to your builds, both badass.
I appreciate those kind words. It's a lot of fun to add the storytelling part of the build, and I'm so glad you're enjoying it.

And about the build. There's a short block in the shop.

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Mains are studded and torqued. The instructions for the main studs are pretty crappy, and take up a whole page to tell you...not much. Here's my slimmed down guidance. The 12mm studs bottom in the bore, while you need to gage the 10mm ones so there are enough threads showing past the nut. Torque per the book - 3, 2, 4, 1, 5, inners; 3, 2, 4, 1, 5 outers; go in 10 lb-ft stages (from 15-20) up to 90 on the inners, 80 on the 12mm outers, and 50 on the 10mm outers.

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The piston rings all came together without a problem. The secondary rings were reworked by Total Seal to be made gapless, which is really just machining a notch on the standard ring and filling that with the very light replacement whose gap is offset 180*. The Summit tapered ring compressor made stuffing this whole thing super easy.

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Anodized crowns are good for up to 1250F on the EGT, though I have never passed 1000F on the old setup.

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6.2L timing gears swapped right over, and the crank and cam are now aligned to one another.

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While the sun was out, I dug into the bumps to try and get one more inch of up travel. I smoked a 2.5" slugger to cut open the tops, cut and added 1" from a new set of King cans, and sleeved the assembly in 3"x.125 DOM. It's all pretty tight.

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In the short term, this is all so I can get an additional inch of bump for a coming trip.

David
 
Great video David. I look forward to each one. Your Dad’s reaction when the pan was removed was awesome.
 
Finally getting some fancy parts installed.

This flowkooler water pump needed a bit of clearance to fit the fan clutch.

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The 6.5 front cover crank trigger hole is sealed up with a .75” freeze plug.

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Thunderstorms had me crammed in the back of the shop getting the front cover and water pump all sorted out.

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David
 
I did not realize there were that many hi-po parts for the 6.2/6.5 family. The Fluidampner I knew about but I wasn't aware of the gear drive and the roller rockers. Is the cam a little hotter than stock too? I may have missed that detail.

Even though I'm not a diesel guy I want to hear this beast rumble to life.
 
Is the razor blade in the picture "party time"?
Yes. They perform many tasks.

I did not realize there were that many hi-po parts for the 6.2/6.5 family. The Fluidampner I knew about but I wasn't aware of the gear drive and the roller rockers. Is the cam a little hotter than stock too? I may have missed that detail.

Even though I'm not a diesel guy I want to hear this beast rumble to life.
The cam is normal 6.5, but the rockers are 1.6:1 rather than 1.5, so maybe there’s a bit snappier throttle response. That’d be nice in Baja next time around. The ported heads hopefully reduces boost pressure while improving flow. The gapless rings should reduce blow by while improving efficiency. The balanced rotating assembly is (I think), a key part to making it all run smoothly, and the big ass fuel system will be an interesting thing to piddle with.

All in all, I’ve thrown everything at this old IDI, and hope to make the most of it.

David
 
Yes. They perform many tasks.


The cam is normal 6.5, but the rockers are 1.6:1 rather than 1.5, so maybe there’s a bit snappier throttle response. That’d be nice in Baja next time around. The ported heads hopefully reduces boost pressure while improving flow. The gapless rings should reduce blow by while improving efficiency. The balanced rotating assembly is (I think), a key part to making it all run smoothly, and the big ass fuel system will be an interesting thing to piddle with.

All in all, I’ve thrown everything at this old IDI, and hope to make the most of it.

David
Ah, the old "kitchen sink" build. Might as well, right?
 
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