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Need help flushing engine block

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Old Jun 1, 2008 | 07:01 PM
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Default Need help flushing engine block

I have the radiator out to be repaired and have decided this would be a good time to go serpentine and e-fans. While at all this, I found my harmonic balancer to be bad. Since I need balancer and reverse rotation water pump, I also bought new Cloyes timing chain (while Im there repair).

Now, I want to clean out engine block and heater core if possible w/o radiator in car. How can I go about this. Thanks

Keivn
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Old Jun 1, 2008 | 07:29 PM
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open the drain plugs on the lower part of the block to drain out the remaining old coolant still left in the motor. There is probably 1-2 gallons left in there.

Last edited by BarryK; Jun 2, 2008 at 01:10 PM.
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Old Jun 1, 2008 | 07:51 PM
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should be plugs in the block between the middle two cylinders just above oil pan. you can leave freeze plugs in.
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Old Jun 1, 2008 | 08:40 PM
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Originally Posted by A88FXRS
should be plugs in the block between the middle two cylinders just above oil pan. you can leave freeze plugs in.
That sounds easy enough. Should I use some sort of flush or just hose it out?
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Old Jun 1, 2008 | 10:15 PM
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Be very cautious using the commercial flushes. Very often all kinds of leaks start soon after. Washing away all that scale and rust often exposes weak spots in freeze plugs etc.


JIM
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Old Jun 2, 2008 | 10:37 AM
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Originally Posted by A88FXRS
should be plugs in the block between the middle two cylinders just above oil pan. you can leave freeze plugs in.
Yes, remove the drain plugs, 1 to a side, and don't get involved with the freeze plugs.

Last edited by Jud Chapin; Jun 2, 2008 at 01:21 PM.
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Old Jun 2, 2008 | 01:10 PM
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opps, don't know what I was thinking while I was typing, I DID mean to say the drain plugs (not freeze plugs) on the lower portion of the block.

That's what's nice about this place, you make a mistake and someone, if not multiple people will chime in and correct you........

Think I'll edit my other post now...........
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Old Jun 2, 2008 | 01:22 PM
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Originally Posted by BarryK
opps, don't know what I was thinking while I was typing, I DID mean to say the drain plugs (not freeze plugs) on the lower portion of the block.

That's what's nice about this place, you make a mistake and someone, if not multiple people will chime in and correct you........

Think I'll edit my other post now...........
Yeah, watch it BarryK.
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Old Jun 2, 2008 | 01:33 PM
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Originally Posted by Jud Chapin
Yeah, watch it BarryK.
sorry, I'll try to be more careful

walking away now hanging head in shame


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Old Jun 2, 2008 | 01:55 PM
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Originally Posted by VettAgra
That sounds easy enough. Should I use some sort of flush or just hose it out?
I hosed mine out from different ways to try and get the sediment out. Flushed thru the w/pump holes out the drain holes and vice versa, flushed out the h/core both ways.
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Old Jun 2, 2008 | 07:06 PM
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Originally Posted by SH-60B
I hosed mine out from different ways to try and get the sediment out. Flushed thru the w/pump holes out the drain holes and vice versa, flushed out the h/core both ways.
Thats what I was thinking, just needed someone else to tell me.

Thanks for the feedback everyone!
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Old Jun 2, 2008 | 11:19 PM
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Default Just knowledge

What has been suggested so far should do all you want. However, as the Forum is a place for knowledge sharing. It was suggested to me a while ago that introducing air in to the flushing water stream would increase the flush effect. I used this set up for another purpose and found that the combination of water and air did increase the scour effect.

For what its worth.

Tony
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Old Jun 2, 2008 | 11:21 PM
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I never new there were plugs in the block, are they like pipe fittings?Anyone have a picture of the plugs?

I still have a lot to put back together and was thinking of how to flush it out as well. If you pull both sides will it flush out the other side?

Sure can learn alot from you guys.

Thanks
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Old Jun 3, 2008 | 06:56 AM
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Originally Posted by 72-LT1
I never new there were plugs in the block, are they like pipe fittings?Anyone have a picture of the plugs?

I still have a lot to put back together and was thinking of how to flush it out as well. If you pull both sides will it flush out the other side?

Sure can learn alot from you guys.

Thanks
Yes, they are simply pipe plugs. Each plug only drains the side it's on. No pic but they are in the middle of the block just above the oil pan rail like A88FXRS said.
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Old Jun 3, 2008 | 09:06 AM
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Old Jun 3, 2008 | 12:56 PM
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Cool, thanks Barry.

Does anyone suspect there might be a problem getting them out? rusted in palce etc?
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Old Jun 3, 2008 | 08:34 PM
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Originally Posted by 72-LT1
Cool, thanks Barry.

Does anyone suspect there might be a problem getting them out? rusted in palce etc?
They can be very stubborn, proceed with caution. Peace,,,Moosie
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Old Jun 3, 2008 | 11:19 PM
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Use a six-point socket- if you try it with a twelve-point you'll most likely round off those plugs.
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