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coolent in the cyl.

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Old 05-29-2005 | 10:50 PM
  #1  
kamaroirock's Avatar
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From: N.Y.
Car: 02 z28, 03 wrangler sport
Engine: ls1, 4.0L
Transmission: t56, 4speed auto
coolent in the cyl.

i took off the heads today and when i unbolted the heads coolent leaked out on to the floor and when i removed the head on the passenger side there was coolent in the #2 and #4 cyl. and when i removed the head on the driver side there was coolent in the #7 cyl. is this just from left over coolent that didnt drain out of the heads when i drained the rad. and leaked into the cyl when i took the heads off, or are there some serious problems. I first decided to to pull the heads because it wouldnt start because i later found out it was hydro locked from coolent in the cyl. (i found out when i pulled the spark plugs out and coolent came out of the #7) so i thought it was a cracked head but now theres coolent on both sides (the head gaskets looked good) so could it be that it has two cracked heads? there arent any visable cracking that i can see im the cylinders. (i am going to bring them to a machine shop to be pressure tested this week.) BTW the heads are the 882 casting.
Old 05-29-2005 | 11:57 PM
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From: Toledo, OH
Car: 1992 Firebird
Engine: forged 357
Transmission: 700r4, 2200-2400 stall, vette servo
Axle/Gears: stock pegleg 2.73 drum (temp)
okay i couldn't understand that.

but are you sure you're not getting coolant in the cylinders when you're removing the heads? I mean, comeon, it's in there, as well as the intake. If you're using gaskets and sealant you shouldn't be getting any coolant in the cylinders.

And it was hydrolocked to begin with? You're either doing something terribly wrong during the installation of your heads/intake or you've got a giant hole somewhere. Even if you had a crack in the head, you wouldn't be getting THAT much coolant in the cylinder to fill it up completely. You'd be able to see something that big with the naked eye.

My guess is that you've got a massive intake leak.
Old 05-29-2005 | 11:58 PM
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From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
My guess is you didin't drain it all out.

If you really think you have a problem, then look at the piston tops...coolant in the cylinders (while runing) will clean them off...compare to the other ones...

I really think you didn't suck it all out of the intake and drain completely.
Old 05-29-2005 | 11:59 PM
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Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
BTW...good time to toss the 882's while they're off
Old 05-30-2005 | 12:03 AM
  #5  
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From: Toledo, OH
Car: 1992 Firebird
Engine: forged 357
Transmission: 700r4, 2200-2400 stall, vette servo
Axle/Gears: stock pegleg 2.73 drum (temp)
Originally posted by 8Mike9
My guess is you didin't drain it all out.

If you really think you have a problem, then look at the piston tops...coolant in the cylinders (while runing) will clean them off...compare to the other ones...

I really think you didn't suck it all out of the intake and drain completely.
That's my guess also. And to comment on the coolant burning in the cylinders, yes it will be very clean or have a white residue, not a black carbon buildup. Also with your spark plugs.
Old 05-30-2005 | 09:55 AM
  #6  
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
If you think you are burning coolant, start paying attention to you miles per gallon of coolant used. You should also start checking your oil on a daily basis till it is figered out. I would change the oil now and see what it looks like. Antifreeze/coolant can kill your bearings very fast.
Old 05-30-2005 | 10:28 AM
  #7  
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Car: 02 z28, 03 wrangler sport
Engine: ls1, 4.0L
Transmission: t56, 4speed auto
Originally posted by Token
are you sure you're not getting coolant in the cylinders when you're removing the heads?
thats what i was thinking and what i said in my original post (i know it was a little confuseing) but the #7 piston did look steam cleaned compared to the others and #2 and #4 looked normal.

8Mike9 BTW...good time to toss the 882's while they're off
i was thinking the same thing

and i bought the car with these heads installed and im guessing it came with the coolent problem when i bought it too.
Old 05-30-2005 | 01:21 PM
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From: Toledo, OH
Car: 1992 Firebird
Engine: forged 357
Transmission: 700r4, 2200-2400 stall, vette servo
Axle/Gears: stock pegleg 2.73 drum (temp)
Are you using RTV on the intake gaskets? How about the head bolts?
Old 05-30-2005 | 01:35 PM
  #9  
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Car: 02 z28, 03 wrangler sport
Engine: ls1, 4.0L
Transmission: t56, 4speed auto
Originally posted by Token
Are you using RTV on the intake gaskets? How about the head bolts?
when i bought the car it already had these heads on it,i didnt do any work to this car the previous owner did, and as far as i can tell it dosent look like they used any rtv, cant tell you for sure tho.
Old 05-30-2005 | 01:55 PM
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From: Toledo, OH
Car: 1992 Firebird
Engine: forged 357
Transmission: 700r4, 2200-2400 stall, vette servo
Axle/Gears: stock pegleg 2.73 drum (temp)
Originally posted by kamaroirock
when i bought the car it already had these heads on it,i didnt do any work to this car the previous owner did, and as far as i can tell it dosent look like they used any rtv, cant tell you for sure tho.
there ya go. put it all back together the right way.
Old 05-30-2005 | 02:20 PM
  #11  
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Car: 02 z28, 03 wrangler sport
Engine: ls1, 4.0L
Transmission: t56, 4speed auto
would that cause that much coolent to leak into the cylinder? because when i pulled the spark plug out for the first time quite a bit came out, and if that was the cause why didnt it happen to more than one cylinder.
Old 05-30-2005 | 02:44 PM
  #12  
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From: Toledo, OH
Car: 1992 Firebird
Engine: forged 357
Transmission: 700r4, 2200-2400 stall, vette servo
Axle/Gears: stock pegleg 2.73 drum (temp)
Originally posted by kamaroirock
would that cause that much coolent to leak into the cylinder? because when i pulled the spark plug out for the first time quite a bit came out, and if that was the cause why didnt it happen to more than one cylinder.
Your coolant system is pressurized- of course it will leak that much if it's got a hole! Use RTV on your intake gaskets!
Old 05-30-2005 | 03:36 PM
  #13  
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Car: 02 z28, 03 wrangler sport
Engine: ls1, 4.0L
Transmission: t56, 4speed auto
so you dont think its worth taking the heads to a machine shop to have them pressure tested because i dont see any cracks any where? or should i just look for some better flowing heads and buy all new gaskets and use some rtv and see how it is. i will post some pictures later.

Last edited by kamaroirock; 05-30-2005 at 04:02 PM.
Old 05-30-2005 | 08:07 PM
  #14  
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Car: 02 z28, 03 wrangler sport
Engine: ls1, 4.0L
Transmission: t56, 4speed auto
pictures
Attached Thumbnails coolent in the cyl.-motor.jpg  
Old 05-30-2005 | 08:09 PM
  #15  
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Car: 02 z28, 03 wrangler sport
Engine: ls1, 4.0L
Transmission: t56, 4speed auto
2
Attached Thumbnails coolent in the cyl.-motor-2.jpg  
Old 05-30-2005 | 08:10 PM
  #16  
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Car: 02 z28, 03 wrangler sport
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Transmission: t56, 4speed auto
3
Attached Thumbnails coolent in the cyl.-motor-3.jpg  
Old 05-30-2005 | 08:20 PM
  #17  
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From: Toledo, OH
Car: 1992 Firebird
Engine: forged 357
Transmission: 700r4, 2200-2400 stall, vette servo
Axle/Gears: stock pegleg 2.73 drum (temp)
yes, that's a telltale sign of burnt coolant. At least it's a very simple fix. How did the head gaskets look? My guess is still the intake manifild was leaking.
Old 05-30-2005 | 08:39 PM
  #18  
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Car: 02 z28, 03 wrangler sport
Engine: ls1, 4.0L
Transmission: t56, 4speed auto
head gaskets looked almost new.
Old 05-30-2005 | 08:44 PM
  #19  
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From: Toledo, OH
Car: 1992 Firebird
Engine: forged 357
Transmission: 700r4, 2200-2400 stall, vette servo
Axle/Gears: stock pegleg 2.73 drum (temp)
Originally posted by kamaroirock
head gaskets looked almost new.
Your intake valve is shiny and new I noticed... This indicates that the leak is probably coming in from above it... General correlation, but not accurate. I'm 90% sure it's an intake leak. Just inspect the heads for anything unusual and put it back together with new gaskets and use plenty of RTV.
Old 05-30-2005 | 08:51 PM
  #20  
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From: Toledo, OH
Car: 1992 Firebird
Engine: forged 357
Transmission: 700r4, 2200-2400 stall, vette servo
Axle/Gears: stock pegleg 2.73 drum (temp)
Originally posted by kamaroirock
2
UPON CLOSER INSPECTION I see rust all around the perimeter of the cylinder, as well as donw the side of it. I can tell you right now that is not supposed to happen

When you re-assemble it be sure to use RTV on the head bolts as well as around all coolant/air passages on the intake gaskets.








Old 05-30-2005 | 09:15 PM
  #21  
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From: N.Y.
Car: 02 z28, 03 wrangler sport
Engine: ls1, 4.0L
Transmission: t56, 4speed auto
Originally posted by Token
Your intake valve is shiny and new I noticed....
it looks that way in the picture but up close its more like a white powder build up i was guessing from detionation or something.

i cant believe the previous owner didnt put it together with any type of adhesive on the gaskets. hope fully thats all it is and she'll be back running again.
Old 05-30-2005 | 09:38 PM
  #22  
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From: N.Y.
Car: 02 z28, 03 wrangler sport
Engine: ls1, 4.0L
Transmission: t56, 4speed auto
i hope i didnt bend any rods when i tried to start it when it was hydro-locked and it started one time after it was drained out but not for long.
Old 05-30-2005 | 10:08 PM
  #23  
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Car: 02 z28, 03 wrangler sport
Engine: ls1, 4.0L
Transmission: t56, 4speed auto
i have another picture but i cant post it because i have posted 3 pictures already but it shows the intake runner for the #7 and its all rusted and cleaner than the others.
Old 05-30-2005 | 11:13 PM
  #24  
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From: Spicer, MN
Car: '83 Berli, '84 Berli, '84 Z28 HO
Engine: L69, LG4, L69
Transmission: TH700-R4, TH700-R4, T-5
Axle/Gears: 3.08, 3.08, 3.73 Posi
that sounds like an intake problem then. and the rust around the cyl should not be there like previously stated. probably filled up with water and pushed the gasket up so it allowed it to leak.
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