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The 83GT... back to BBF

Discussion in 'The Turbo "Builds" Board' started by BBR, Oct 8, 2019.

  1. BBR

    Joined:
    Jan 3, 2013
    took a day off from it and went up to the shop this morning and dropped the trans out of it.

    Fluid is a little stinky so it has been hot at some point but otherwise looked great. I poked the input shaft into the converter and it spun what seems normally. (Comparted to the other converter I was putting back in).

    Then I put a wrench on the flexplate bolts and tried turning the engine over by hand. It would turn, but had a very noticeable tight spot in the rotation. So something in there is not happy. To me it feels like a rod bearing just beginning to spin. So maybe we caught it before it really made a mess.

    Anyway, I took advantage of the time I had and went ahead and pulled the engine out and put it on a stand. I probably won't dive into it for a while as I am kinda done with this car for now.

    I have other stuff I want to play with.

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  2. nxcoupe

    Joined:
    Jan 10, 2008
    Way to leave us hangin!
     
    silver82GT likes this.
  3. B E N

    Joined:
    Nov 22, 2016
    It's like a cliff-hangar series finale!
     
    silver82GT likes this.
  4. silver82GT

    Joined:
    Sep 20, 2005
    Inquiring minds want to know! :) :)
     
  5. mld54

    Joined:
    Feb 13, 2004
  6. BBR

    Joined:
    Jan 3, 2013
    Haha. I'll get around to it. Y'all should know by now I can't leave anything alone for very long.
     
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  7. BBR

    Joined:
    Jan 3, 2013
    Ok I couldn't stand it.

    I popped the pan off and surprise, surprise, all the rod bearings and mains look just like they should look.

    Tomorrow I'll bolt the pan back on and start looking at stuff on the top side of the engine. The distributor is first.

    The very tip (pump side) of the oil pump shaft looks a little strange. Like it was getting jammed down in there. Inside of the pump looks normal for it's age. (2007 ish)

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  8. nxcoupe

    Joined:
    Jan 10, 2008
    OK, so........?
     
    BBR likes this.
  9. BBR

    Joined:
    Jan 3, 2013
    Patience! I have a job that I am expected to do occasionally! :banana:
     
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  10. BBR

    Joined:
    Jan 3, 2013
    Heads, intake and valvetrain all off. No smoking gun.

    Engine turns over like butter. Lifters look great.

    I took a closer look at the oil pump. There are signs that it was galling on the bottom plate. I banged it on the bench and pieces of metal came out of the hex drive hole. IDK if that was the cause, but it certainly isn't normal.

    I guess I'll order bearings and rings and go ahead and freshen it up.
     
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  11. BBR

    Joined:
    Jan 3, 2013
    I am going to check some clearances. Back when Judd was building his Galaxie, I had to reinstall the dist gear on the drive stub shaft. IIRC there were 2 distributor pin holes. If I put it back in the wrong one, there is the possibility that the driveshaft could bottom out. Then the drive would not ride on the block like it is supposed to. The constant downward pressure from the cam would constantly be pushing the oil pump gear into the bottom plate.

    It's a theory at least. Haha.

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  12. nxcoupe

    Joined:
    Jan 10, 2008
    Sounds goofy enough to just be a correct conclusion. That's the kind of shit that happens to me too. Get in a hurry and make a mistake.
     
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  13. BBR

    Joined:
    Jan 3, 2013
    Made a tray with the 3D printer to keep my lifters organized.

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  14. BBR

    Joined:
    Jan 3, 2013
    I pulled the pistons out and they look freakin great. Crank, timing set and cam all spin over super easy even though the crank weighs a million pounds.

    I put the oil pump back together, reinstalled it in the block and the oil pump driveshaft has plenty of free play. Then I removed the pump and tried to turn it by hand. Nope. I clamped it in the workmate and tried turning it with a wrench. It would turn a bit then get tight, like it had something in it. You could back it up then it would turn free only to get tight again. Sorta like it would bind up, then you could back up and it would realign and turn again, then bind again.

    Bearings, gaskets and rings all showed up yesterday. Today I'll continue to start getting it ready to put back together.
     
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  15. BBR

    Joined:
    Jan 3, 2013
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  16. BBR

    Joined:
    Jan 3, 2013
    Bottom end is all done. Looks great and turns over great. I'll poke the pan on and then start on the top end.

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  17. Briansshop

    Joined:
    Dec 12, 2006
    I've wanted to build a 460 since I high school. Have had an early 70s block in my shop for 30yrs...would built it by now if I hadn't touched a dam turbo!
     
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  18. BBR

    Joined:
    Jan 3, 2013
    That's funny because I got into big blocks because I was concerned about turbo reliability. Back in 2005, our local drag strip closed (now open again) so the closest track was 2 hours away. I was in the process of building a turbo small block Mopar to put in my 86 Ranger. (looong story) Blowing up your motor 20 minutes from home is a lot different than doing it 2 hours from home, so I made the switch to big blocks. Haha.

    *******

    I went to test fit the oil pan yesterday and the pickup tube I bought is the wrong one. Unfortunately the correct one is no longer available unless you buy the entire FRPP kit (M-6675-A460) that comes with a pan, pickup, gasket, main cap bolt, and dipstick. Luckily I did not throw the old one away. I did cut the bottom open to see if stuff was stuck in it, so I may clean it good, weld the bottom closed and reuse it.

    So, I went ahead and flipped it over and started on the top end. One thing I am going to change is the exhaust pushrod length. The intake side looks pretty good with a 8.80" pushrod, but the 9.25" one's on the exhaust look a skosh long. I think a 9.10" or 9.15" would improve the geometry a bit. It's not bad as is, but I feel it could be a little better.

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  19. BBR

    Joined:
    Jan 3, 2013
    Ok, I guess I will let the cat out of the bag. I don't intend to add turbos to this particular engine anymore. It is just not a good candidate for boost. I am going to keep it n/a, carbureted and simple. Greenbean will be the complicated car in my life. I just don't need or want two complicated ones. Haha.

    So, once I have this engine back together, I will stop updating this thread because, after all, this is the TurboForums, not the N/A Forums. Haha.

    Now for today's update:
    Intake gaskets and pushrods will be here tomorrow. Timing cover, engine mount, water pump and harmonic balancer are all installed again.

    Since I am keeping the carb on it, I wanted to get rid of the fuel rails altogether. I considered making a low profile bar to lock the injector plugs in place but I didn't really like that idea. Then it hit me, I could use a set screw to hold them in place. That idea then morphed into "why not just drill all the way thru and use a cotter pin?"

    So that's what I did and amazingly enough, I didn't screw it up. The cotter pins fit snugly in the holes and are really just there to keep them from vibrating out or popping out if it were to backfire for some reason.

    I considered just buying a new intake, but dang, parts are expensive these days. $500+ for a new one just doesn't put a giggle in my wiggle.

    This will be fine for now.

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  20. B E N

    Joined:
    Nov 22, 2016
    Does that mean it will get a real exhaust?
     
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