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Cheww

Are all Rb30 heads cracked??? (engines not owners)*

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So the other day i herd (what i thought was) a drastic outrageous statement.....

"That ALL rb30 heads are cracked, EVEN if you cant see it (because the crack isn't all the way through yet)"

and this is regarding the r31s as well as the VLs before you ask. 

old mate says its due to the fact that rb30s have hot exhaust gasses on one side of the water jacket and cold water on the other side and these hot and cold conditions are the reason for cracked heads on unmolested engines with 10,000km. 

i dont know if this is standard knowledge or not, but id kinda like to molest my engine so the idea of a potential crack in the head doesn't arouse me at all. So what do yall suggest i to do to find out if my engine has an "invisible" cracked or not? and how would i repair it if it was? (if what he says is true)

my engines actually running like a dream at the moment but it did have over heating troubles in the past that were fixed pretty quick

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lol fairy stories from the 80s back again!

It is pretty simple to pressure test the cooling system to confirm there are no leaks.

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 Now where is that spot on the wall I keep bashing my head against ? . . . . . . Oh there it is  . . . . . . 

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It seems like old mates head is cracked, not the one on the RB30.

Edited by NZ-GTT
Spelling mistake
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I would have said that perhaps every RB30 head that was not on an engine at the moment was quite possibly cracked. Possibly being the reason it is no longer on an engine.....

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Most rb30 heads that are no longer on engines probably got replaced by a 25 or 26 one 

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I suspect the cracked head story is from a VL, because their factory cooling system was not set up correctly, so someone drove their VL with a blown headgasket for thousands of kilometers before the engine gave up.

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51 minutes ago, niZmO_Man said:

I suspect the cracked head story is from a VL, because their factory cooling system was not set up correctly, so someone drove their VL with a blown headgasket for thousands of kilometers before the engine gave up.

not setup correctly? what do you mean?

the Radiator is lower than the head, you have to bleed the coolant . Because people werent aware of that and didnt do it doesnt mean there is a fault of the car.

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Running off old memory but it was related to the radiator being lower than head and car not being bled properly because of that. R31's rad was higher? Like I said, it's been a long time since I've read about this.

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2 hours ago, niZmO_Man said:

Running off old memory but it was related to the radiator being lower than head and car not being bled properly because of that. R31's rad was higher? Like I said, it's been a long time since I've read about this.

Yeah this is what it was

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