Pressurized coolant quandary
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TECH Junkie
Joined: Jul 2015
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What block?
When my iron 6.0 cracked it didn't leak period water into the cylinder
It stayed completely sealed up unless it was under power then it would open up
You could drive around just fine with no issues or symptoms. Make a hit and you could push a gallon into the overflow in a 1/4 mile
It's tough to see the crack unless you are looking for it.
You can test for combustion gas in the coolant with a CO detector and a ziplock bag in 2 seconds
When my iron 6.0 cracked it didn't leak period water into the cylinder
It stayed completely sealed up unless it was under power then it would open up
You could drive around just fine with no issues or symptoms. Make a hit and you could push a gallon into the overflow in a 1/4 mile
It's tough to see the crack unless you are looking for it.
You can test for combustion gas in the coolant with a CO detector and a ziplock bag in 2 seconds
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TECH Junkie
Joined: Jul 2015
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Edit: nevermind that, there's no way a rod would fold..... it would make for a slick ride down the track though...
I've been around 3 and they have never let water I to the cylinder.
Under the power stroke and cylinder pressure the cylinder swells and opens the crack sending high pressure gas Into the system. When the cylinder pressure is gone it seals back up until the next cycle
Everyone thinks the iron 6.0 is some killer block but in reality it is perty sketch even at decent power
Here is a iron 6.0 even on a virgin 4.0 bore
Here is a iron 5.3 at virgin bore
Under the power stroke and cylinder pressure the cylinder swells and opens the crack sending high pressure gas Into the system. When the cylinder pressure is gone it seals back up until the next cycle
Everyone thinks the iron 6.0 is some killer block but in reality it is perty sketch even at decent power
Here is a iron 6.0 even on a virgin 4.0 bore
Here is a iron 5.3 at virgin bore
Thread Starter
TECH Junkie
Joined: Jul 2015
Posts: 3,012
Likes: 48
I've been around 3 and they have never let water I to the cylinder.
Under the power stroke and cylinder pressure the cylinder swells and opens the crack sending high pressure gas Into the system. When the cylinder pressure is gone it seals back up until the next cycle
Everyone thinks the iron 6.0 is some killer block but in reality it is perty sketch even at decent power
Here is a iron 6.0 even on a virgin 4.0 bore
Here is a iron 5.3 at virgin bore
Under the power stroke and cylinder pressure the cylinder swells and opens the crack sending high pressure gas Into the system. When the cylinder pressure is gone it seals back up until the next cycle
Everyone thinks the iron 6.0 is some killer block but in reality it is perty sketch even at decent power
Here is a iron 6.0 even on a virgin 4.0 bore
Here is a iron 5.3 at virgin bore
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that's a thin wall there with a wider than expected cylinder variation, says that factory liner wasn't true square and parallel so the factory blocks are truly a Crap-shoot for big power.... hmmm that .115 is very thin for a stock bore.... unless I'm missing something that's just under 3mm
Yes typical 30 over 6.0 blocks very common to be in the .100 wall thickness area even with no coreshift issues
That is a 6.0 vs 5.3 btw, I was just showing the difference
Larger bore and non Siamese is what does it
That is a 6.0 vs 5.3 btw, I was just showing the difference
Larger bore and non Siamese is what does it
Thread Starter
TECH Junkie
Joined: Jul 2015
Posts: 3,012
Likes: 48
Thread Starter
TECH Junkie
Joined: Jul 2015
Posts: 3,012
Likes: 48
Thread Starter
TECH Junkie
Joined: Jul 2015
Posts: 3,012
Likes: 48
No. As long as it's not bored, it's the same. For whatever reason, seems the iron blocks are more prone to splitting. I don't have the scientific reason though.
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From: Pittsboro, IN