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1991 Lumina Z34

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  • Skeptical
    replied
    And with this set of pics, we are all caught up to where I'm at with the car/engine/project/thing/stuff/etc.


    This is after starting to hit the valve with the wire wheel. She definitely had an oil burnin' problem.

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    Looks like something from sex ed class that I was warned about.

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    Not as bad as i was expecting once the exhaust valves were cleaned up. They will probably clean up with a grind but I may just replace them.

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    Tips weren't looking too healthy. I'll have to find the specs to see how much can be taken off.
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    I'm 50/50 on these valve. If I can find a cheap set of factory take outs I'll go that route.

    If anyone has some, this is what I need -
    2.00" Intake
    1.575" Exhaust





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  • Skeptical
    replied
    Originally posted by DanStokes View Post
    Remember to prelube that sucker before you hit the key. I made a rig out of a pressure cooker that worked well but I've seen them made from big PCV plumbing drain pipe. Bottom line, LSs will fail if not prelubed as proven to me by the engine I put in my Grandson's Trailblazer SS. Three times.

    Dan
    That's good info. I usually just crank em without the spark plugs in them and they pick up oil pressure within a few seconds. That got me poking around the internet looking how different people prelube em. There are some neat setups people are building out there. Not sure how I will handle this one yet.

    I like this Melling video. Pretty straight forward way to prime an LS.


    SuperBuickGuy, I bet the Vaseline trick would work just fine to get it to prime. The pump on this 5.3 has bunch of lucas assembly lube oozing out of it. Last time I did one of these it sat for a year before I spun it over without the plugs in it. Primed in seconds. Come to think of it, I'm pretty sure that is one of the methods that GM used to recommend with their crate engines and replacement engines (That didn't have an easy way to prime it). I vaguely remember seeing it right on the tags that came with the engines back when I worked at Pontiac.

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  • DanStokes
    replied
    I don't think so as the pump is buried in there where it would be hard to do. But maybe (says I, mulling it over......). But the pressure luber is easy enough to make and there is a port you can access fairly easily. I wonder if the Vaseline would get in the way of forcing oil thru the pump and passages? (More mulling......)

    Dan

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  • SuperBuickGuy
    replied
    Originally posted by DanStokes View Post
    Remember to prelube that sucker before you hit the key. I made a rig out of a pressure cooker that worked well but I've seen them made from big PCV plumbing drain pipe. Bottom line, LSs will fail if not prelubed as proven to me by the engine I put in my Grandson's Trailblazer SS. Three times.

    Dan
    I know I didn't because I planned on pre-lubing by pressure; however, does the Buick pre-lube trick work on LS? (vaseline baby).

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  • DanStokes
    replied
    Remember to prelube that sucker before you hit the key. I made a rig out of a pressure cooker that worked well but I've seen them made from big PCV plumbing drain pipe. Bottom line, LSs will fail if not prelubed as proven to me by the engine I put in my Grandson's Trailblazer SS. Three times.

    Dan

    Leave a comment:


  • Skeptical
    replied
    Slamming the rotating assembly back together. Nice new cam bearings in there too.

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    If you look real close, you can see an LS9 cam in the picture.
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  • Skeptical
    replied
    Cam bearings knocked out, honed, and cleaned up.


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    Minding that gap...

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    All gapped and ready to rock. Note - the silveryness of the gap is from the ever so slightest whiff of the file when knocking down the burr. They aren't chamfered there I assure you.


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  • Skeptical
    replied
    Originally posted by Russell View Post
    I have never heard of the F40 I bet that would be fun. I am not sure I have ever driven an AWD car before. My car is pretty much stuck it the 90's other than the Holley Terminator X. I have to finish my paint work. Get ready for Dragweek. If there are enough pennies left in the fun account I want to put a diy China turbo on the mustang this winter. I think i have been look at your epay turbo as a possibility. Let us know what you think about it. I am not sure if the stock 5.0 will spool it.
    You'll definitely see how it works out here. I don't know if you would have a problem with a turbo this size on a stock 5.0 or not. I'd say do the math and peruse the internet for people who have already run this setup. None of us are reinventing the wheel here (that seems like it could be a dad joke about turbine wheel or something). Good luck with the dragweek car. I'll be watching for it on the stream when it comes up.
    Last edited by Skeptical; May 17, 2020, 04:54 AM.

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  • Russell
    replied
    I have never heard of the F40 I bet that would be fun. I am not sure I have ever driven an AWD car before. My car is pretty much stuck it the 90's other than the Holley Terminator X. I have to finish my paint work. Get ready for Dragweek. If there are enough pennies left in the fun account I want to put a diy China turbo on the mustang this winter. I think i have been look at your epay turbo as a possibility. Let us know what you think about it. I am not sure if the stock 5.0 will spool it.

    Leave a comment:


  • Skeptical
    replied
    Tear down pics... I don't know what happened to the cylinder head pics. There was quite a bit of carbon build up. The rings were pretty stuck on the pistons too. Lots of build-up in the ring lands.

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    Rod and main bearings looked like new.

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    All of them looked like this.

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    The cam bearings however didn't look as happy. These will be replaced.

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    The spark plug ceramic on a couple of the rear plugs had broken off and embedded itself in a couple of the pistons. Nothing a couple of new pistons won't take care of. Cylinder heads did not suffer any damage. Probably from the pillowy layer of carbon they had on them.

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  • Skeptical
    replied
    Originally posted by Russell View Post
    Welcome to BS! I like the car. I am starting to see a few LS4 swaps. Are you going to get a 4T80 for it? What turbo is that.
    Thanks Russell! Right now the plan is to stick with the 4t65 with some upgraded goodies in it. With the ZZP and Intense guys keeping one together behind their cars making much more power than I plan, I think it will be ok for now. Not to mention the GM ecotec drag car ran the 4t65 as well. I have the pdf on how they made that one live. If/When I break it, I'll be sure to post up the carnage.

    So let me throw another swap idea that would be pretty cool. How about the F40 6spd in the Lumina? The fiero guys are bolting that one up to their ls4 swap cars. That trans in "brand new old stock" form right now is cheap. That would be a fun driver!

    And how about one more idea for good measure... The transfer case off of a Pontiac Aztek or Buick Rendezvous with the 4t65 should line up in the tunnel of the car... You get what I'm puttin down? I think GM even used the rear diff and suspension off of one of those on their Grand Prix G8 AWD concept car. It was shockingly stock appearing underneath.

    The AWD idea might be a direction to take it sometime down the road. For now, I'm just shooting for making it live by the end of the summer.


    Oh, the turbo is a """"Billet""""" fleabay 7875. I've only used a cheap turbo like that one other time and had good results. We shall see if it holds up (Not really worried). The little one in the picture is a TD04H 16T. Those little guys are fun, tough and cheap. I run one on my Cavalier. I think they flow enough for a hair over 300hp. I bet they would make a great twin setup on a tpi 305.

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  • Russell
    replied
    Welcome to BS! I like the car. I am starting to see a few LS4 swaps. Are you going to get a 4T80 for it? What turbo is that.

    Leave a comment:


  • Skeptical
    replied
    Tear down vidya...

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  • Skeptical
    replied
    Unloading the beast after hosing off some of the oily bits.

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    And this is where it aged for the next 2 months or so....
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    Bonus parts! The one on the right is what i run on one of my other cars. The one on the left is alllll Lumina.

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  • Skeptical
    replied
    Originally posted by SuperBuickGuy View Post

    I'm building a 64 Buick special wagon that has an LS right now, but eventually will have a turbo 3800.... never realized how much steam those things could make... the plan is eventually do drag week with it.
    I saw the wagon in the other thread. Looks like you're making some good progress. The turbo 3800 will be cool as hell too. There's no doubt they are stout little engines. I've been wanting to do drag week for years myself. Maybe we'll both end up doing that the same year.

    Leave a comment:

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