95 Vette w/ LT1 runnin hot...

Discussion in 'OT Driven' started by Supernoma, Apr 28, 2003.

  1. Supernoma

    Supernoma servus publicae OT Supporter

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    Today we brought it out for the season and it got up to 213°. Last year we replaced the thermostat, 195° or 180, dont know off the top of my head. What are some other possibilities that could be causing this?
     
  2. Possum Stomper

    Possum Stomper The Great Bird of the Galaxy

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    my 94 formula gets up around 220 in traffic, is this bad?

    never gone over that and i left is idleing for about 10 minutes in the sun but it never overheated
     
  3. you know me

    you know me OT where the douchbags play

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    Clean out the space in front of the rad and see if that helps. You would be surprized how much shit gets up there.
     
  4. MAD PUNK inDC

    MAD PUNK inDC Sic Semper Tyrannis

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    Water under pressure has a higher boiling point, as well as the adition of glycol. Your coolant will not boil at 100. However the LT1 shouldn't get quite that hot. Check to make shure the radiatior is clear, also check to see if the air damn is intact. Another possible LT1 specific problem is bubbles in the coolant passages. It's very hard to bleed out the system, so you may want to check that, and be shure to add coolant, and bleed all the air out of it. Leaving air in the system can cause a problem with hot spots in the heads.
     
  5. Supernoma

    Supernoma servus publicae OT Supporter

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    Thanks for the info. It's been getting hot when left idle, but I had it out yesterday and it didnt get above 195°.
     
  6. striker754

    striker754 Chillin

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    perfectly normal. 210 is the middle mark on the temp gauge.

    its engineered to run hot.....hot car = lower emissions
     
  7. foxbat

    foxbat Guest

    eaxctly!!

    LT1's are designed to run hot.
     
  8. Wolf

    Wolf No one plans to take the path that brings you lowe

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    Check that your fan is turning on when it gets hot (temp sender to the fan might be bad), If the cooling system hasn't been flushed in a while, you should probably have that done too.
     
  9. whelen1

    whelen1 New Member

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    if everything is working correctly try finding a product called "water wetter" it can be found in most performance shops ... I use it on my car and my friends vette ... works wonders sometimes
     
  10. striker754

    striker754 Chillin

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    jeez man if ur so worried, get a 160 thermostat and a fan switch or program the fans to come on eariler. my car never goes over 170-175 with these.
     
  11. Kriz

    Kriz Active Member

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    GM fans dont turn on till 227 degrees if I remember correctly. If its below that you're not over heating
     
  12. RenaultFreak

    RenaultFreak OMG

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    LT1s run hot by nature, you just have to take care because its got aluminum heads ( and block too? :dunno: ) and aluminum heads don't do well under extreme temps, 212F is about right, anything over 230 and I would put an eye on it, 240-250 and I'd definitely kill the engine before something pops. You can trigger the fans by modifiying the ecu, pm glen5839 he knows about the procedure and parts needed :)

    Check:
    -Coolant level ( flush and replace if it's too old, again aluminum engines love fresh coolant not a rusty mix of water and dirt)
    -Leaks
    -Fans working at low speed with the a/c on
    -Radiator cap and reservoir cap ( 1 in LT1s :dunno: can't remember )

    rfwh
     
  13. RenaultFreak

    RenaultFreak OMG

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    wow, this thread was 7 months old :o

    :mamoru:
     
  14. Fabian

    Fabian Guest

    My vettes intake (96 CE) is hotter than fuck to the touch...perfectly normal though, it operates around 210 degrees
     
  15. Inconspicuous

    Inconspicuous Resident LT1 Guru

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    I know this thread is old, but I'll reply anyway.

    I keep my LT1 running around 175 degrees. If it gets to 180, I get mad.

    A hot engine runs clean, but also robs power.

    A 160 degree thermostat would help, get your fans reprogrammed to come on earlier (LT1_edit is what I use, if you want to flush your money get the HPP+), and make sure your coolant system has been bled correctly and doesn't have any air pockets. You have to be careful of overheating because of the aluminum heads and iron block. They expand and contract at different rates and can cause head warpage and head gasket breakage.
     

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