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Is it time for a rebuild? part 2

Discussion in 'The Garage' started by NEK5, Dec 8, 2006.

  1. NEK5

    NEK5 3/4 ton status Premium Member

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    Alright guys..It`s been previously stated that I`ve had some issues with my motor, mainly that it smokes alot and burns a good amount of oil. So far I`ve done a few things. 1) found out PCV port was clogged on the TB 2) pulled the TB off, cleaned it up, then reinstalled. 3) I then replaced the PCV valve, along with giving it an oil change, and as soon as i pull out of my driveway to take it for a spin, I left a nice cloud of smoke infront of my house, and again every time I got on the gas, or left a stop sign.

    I`ve yet to do a compression or leak down test.

    As I was told by ryoken to check my blowby from the breather, but I`m not sure how to describe it..like how much is too much etc..

    Any suggestions, advice, etc. you want to add, feel free...

    If you think it`s obvious I need a rebuild, maybe throw out an idea of what I should do, ie get a rebuild, get a crate (any specifics, under $2k), etc....
     
  2. 1977k5

    1977k5 3/4 ton status Vendor

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    Do the compression and leak down tests before you get too involved with replacing this thing.
     
  3. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    do a compression test. its a good place to start. If you can do the labor on a motor swap, then $2K gets you a nice motor. I had one built for $1600 that puts out 400 lb/ft. I did a lot of work myself. I did all the engine disassembly.
     
  4. NEK5

    NEK5 3/4 ton status Premium Member

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    Well, I`ll be able to get a good amount of help with the swap if need be. If thats the way things go, I think 2k will be my limit, maybe 2500.

    I`ll look into get a CT done soon, hopefully my friends dads up for it:eek1:
     
  5. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    you can do it yourself it just takes longer.
     
  6. NEK5

    NEK5 3/4 ton status Premium Member

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    ok, yesterday when i was out driving i got the noise again. Sounded more a like a knock, and it did it 3 times in a row, and when i heard it, i looked in my rear view mirror and saw some pretty smoke pouring out of the exhaust:eek1:
     
  7. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    Merry christmas honey, I spent all the kids present money on a new small block.
     
  8. beater_k20

    beater_k20 Banned

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    DO THE FREAKING LEAKDOWN TEST ALREADY!
     
  9. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    If you keep doing the same thing and expect a different result then, you sir are stupid. Diagnose it with tools, not a keyboard. time to get your hands dirty.
     
  10. NEK5

    NEK5 3/4 ton status Premium Member

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    No, I don`t think repeating my self many times is going to tell me anything different. I do plan on a leak down and compression test as soon as i get the time/tools/help. I just got done moving houses, so its been a little busy around here.

    As soon as i do both tests, I`ll post up any and all results....I think its not going to be the results i`m looking for, if so, i may have a lead on a motor with the same amount of miles on it, but it doesnt smoke and it runs strong, according to muddybuddy:D :rolleyes:
     
  11. NEK5

    NEK5 3/4 ton status Premium Member

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    Since it`s already obvious I`m burning oil, would you rather a leakdown test or a compression test? or will i pretty much get the same results?
     
  12. beater_k20

    beater_k20 Banned

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    the leakdown test will tell you more information.

    it will tell you if and how much compression you're losing, as well as where you're losing it.
     
  13. NEK5

    NEK5 3/4 ton status Premium Member

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    as far as simplicity goes, the compression test just tells me that the certain valve is bad, right? not just rings?

    also for a leakdown test, what do i need to buy, the fitting, a certain kind of guage?
     
  14. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    http://www.type2.com/library/engineg/leaktst.htm

    check this out. it is a simple explaination. a compression test is easier, but a leak down will tell you more. a compression test will tell you if you have a bad cylinder. if you do a compression test and gets some real low numbers on 1 or more cylinders then its obvious something is wrong. if they are all close to the same then a leakdown is the next step.
     
  15. NEK5

    NEK5 3/4 ton status Premium Member

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    thank you sir, that`s what I was thinking...

    Since I know I can readily get the compression tester, I think I`ll do that first...then if the numbers aren`t too bad, then a leakdown test will follow...
     
  16. beater_k20

    beater_k20 Banned

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    a compression test will tell you NOTHING but the fact that there is low compression in a certain cylinder.

    a leakdown tester...
     

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