🔧 BUILD CMNT's thing is bigger than yours v. cubic inch displacement

General Information

So... I am finally doing a thing. It's a thing I've been talking about for awhile now. I had held off as working for Sears as I didn't want to spend money on a happy meal, much less any big purchases... Now that I am happilly employed elsewhere I figured it was now time to shit or get off the pot. Anyway, I have been looking for awhile and am currently in the process of buying it.

Ok, so what is it?

3/4 ton, 2003 Suburban LT 4x4, with the ole 496'er and 4.10 gears. It has the normal assortment of dings, a door dent, and normal wear and tear of a 17 y/o GM truck, but what sold it was that all this has less than 100k on the clock and the price was cheap. So I wasted no time getting the dealer on the phone and putting a deposit on it before anyone else could. The problem is... The dealer is out in Utah.

I do have some dealer pics I will post when I get on my other computer, But I am so excited to have another Vortec 8100.

IMG_2783.jpg


IMG_2782.jpg


IMG_2781.jpg


IMG_2763.jpg


IMG_2772.jpg


IMG_2754.jpg


IMG_2790.png


IMG_2750.jpg


IMG_2746.jpg

CMNTMXR57

GM, Holden & Chrysler Mini-Van nut swinger
TCG Premium
Sep 12, 2008
26,406
31,772
Elgin
So late last Sunday I discovered I have the dreaded transfer case pump rub. Basically the rotor on the pump isn't properly clearanced and it grinds against the transfer case housing eventually working through.

So moanday, I tried to quickly clean and apply a layer of permatex steel weld. I chose this over traditional JB Weld (which I also have) because this is almost as strong but cures much faster. 4-6 hours vs. 24 hours. Anyway, it helped a little, but was still leaking out. So today, I cleaned up again and liberally applied another batch of steel weld. It's curing now. I am glad I caught this when I did as I was only down 6 ounces of auto-trak fluid. So it has been a recent issue...

Here is the pinhole;
20230211_140713.jpg


Fresh, heavy coat of steel weld;
20230211_142716.jpg


While this isn't the truly correct way to fix it, it buys me time and maybe when it is warmer out, I will take the case apart, get the correctly clearanced pump, and do it right. But if this stops it/slows it down, I can live with it for now.
 
  • Like
Reactions: Bob Kazamakis

CMNTMXR57

GM, Holden & Chrysler Mini-Van nut swinger
TCG Premium
Sep 12, 2008
26,406
31,772
Elgin
I think the name of the aftermarket company that makes a revised pump assembly, properly clearanced is merchant automotiven IIRC.

You have to remove the driveshaft, drain the fluid in the case the separate the case, remove the back half of the case, remove the pump assembly, install the new pump assembly and reinstall everything. If your case is really chewed up, this would be the time to replace that too.
 

CMNTMXR57

GM, Holden & Chrysler Mini-Van nut swinger
TCG Premium
Sep 12, 2008
26,406
31,772
Elgin
Another round of perma-tex steel weld to finish sealing the transfer case

20230219_134943.jpg


And then, if you recall a few weeks back when I found the passenger side exhaust manifold heat shield loose and rattling, well in removal I had to loosen one of the manifold bolts to remove it. Well, I guess the loc-tite from the factory was no good any more even after i torqued it to spec, so I just removed the stud completely and treated it with blue loc-tite and sent it...

20230219_141027.jpg
 

CMNTMXR57

GM, Holden & Chrysler Mini-Van nut swinger
TCG Premium
Sep 12, 2008
26,406
31,772
Elgin
Driving today, enjoying the weather, windows down, and I hear a very faint ticking sound on the passenger side as I was next to other cars, walls, guardrails, etc...

Sure as shit, that bolt was loose again. Pulled it back out and it looks like only a 1/3rd of the thread size is there. So until I can get to Lowes and pick up a couple M8 x 1.25, 30mm flange bolts, I re-loctited it and torqued it back to 12 lb/ft.

I'll probably chase a tap through the head too, just to make sure that is clean.
 

CMNTMXR57

GM, Holden & Chrysler Mini-Van nut swinger
TCG Premium
Sep 12, 2008
26,406
31,772
Elgin
So Nothing overly spectacular, after watching the old Suburban rust away underneath (particularly fuel lines, brake lines, bolts underneath that will need to be cut off to remove anything, etc...), I want to make sure this one doesn't.

So awhile back and finally got around to doing it yesterday. I had ordered a 6-pack of black fluid film spray. I ended up only using two cans yesterday.

20231022_172450.jpg


Unlike the '99, the main fuel tank (there is also a reserve tank on this one), is tightly nestled up to the drivers side frame rail, so a chunk of the fuel lines and brake lines are very well isolated from the elements unlike the '99. Anyway, got the diff, frame rails, cross-members and front suspension parts to a point. This stuff is lanolin based so my hands are now silky smooth, but it was a messy endeavor and this shit stinks.

20231022_162058.jpg


20231022_162118.jpg


20231022_162203.jpg


20231022_162207.jpg


20231022_162235.jpg
 

CMNTMXR57

GM, Holden & Chrysler Mini-Van nut swinger
TCG Premium
Sep 12, 2008
26,406
31,772
Elgin
From a thread on Tacoma world;

You should rinse your undercarriage with plain cold high pressure water to get the salt off. If you don't blast the frame to hard when rinsing and put enough fluid film on, it will last a while and not come off in one or two rinses.

By spring time if you get a salty winter where you are rinsing the truck every week or every other week, then it will be mostly gone. You should plan on applying it in both early spring and late fall. Early spring with all the wetness and humidity and warmer temps, is when most professional undercoating companies recommend having it done.
 
  • Like
Reactions: Bob Kazamakis

CMNTMXR57

GM, Holden & Chrysler Mini-Van nut swinger
TCG Premium
Sep 12, 2008
26,406
31,772
Elgin
From a thread on Tacoma world;
So reading up more in that thread, many have mixed results. Some like an Amsoil product called MPHD (or something like that), etc...

Some guys dump more cans that I did, but they're pulling body plugs, doing wheel wells, dropping spares, etc... I didn't quite go that blitzkrieg on it. I just wanted main pain points protected.

If anything, it will be better than nothing. And if I do it annually (before winter), I'm sure it helps significantly. I don't need to do it necessarily in spring because generally by the time the warm months come, I am driving the G8 or Caddy and the truck sits for the most part.
 
  • Like
Reactions: IceCreamAssassin

Jimy Bilmo

CSVT OG Member
TCG Premium
TCG Goldmember
Aug 16, 2005
38,857
61,002
So reading up more in that thread, many have mixed results. Some like an Amsoil product called MPHD (or something like that), etc...

Some guys dump more cans that I did, but they're pulling body plugs, doing wheel wells, dropping spares, etc... I didn't quite go that blitzkrieg on it. I just wanted main pain points protected.

If anything, it will be better than nothing. And if I do it annually (before winter), I'm sure it helps significantly. I don't need to do it necessarily in spring because generally by the time the warm months come, I am driving the G8 or Caddy and the truck sits for the most part.
I think I have 5 more cans of MPHD left. It's good stuff, and now that I own German cars that don't have these typical American car issues, thanks to Shawn1112 Shawn1112 I've been using MPHD as my garage door track and roller lubrication. Lasts way longer than WD40. Also, sprayed down the snow blower too.
 
  • Like
Reactions: Shawn1112

Jimy Bilmo

CSVT OG Member
TCG Premium
TCG Goldmember
Aug 16, 2005
38,857
61,002
American cars do that too. GM W and H Bodies have been doing that since 2000.
Talking most things: control arms, etc. Actually, Porsche was pretty bad with the Cayenne's still using cast shit, but have been much better recently. And you'll rarely find a German car body rusting out on anything that's a 2006 and newer. Where as my Ram was getting cancer in numerous areas at 5 years old and 99k miles.
 

Thread Info