Broken Exhaust Manifold???

[GTiR 14]

What could have caused this and what can be done to prevent it from happening again?

[*KRONIK*]

[stang]

What did the manifold come off from??

Had a problem once of the engine spiting fire through the manifold and burnt a hole in it...had it repaired/wielded.. think they said that the engine was running too rich and a problem with the timing causing a lost of unburnt gas to get into the exhaust...

Noticed that it broke off closest to the exhaust and the colour shows that there was a lot of additional heat other then exhaust gas... take it to a muffler repair shop and would say what caused it ...good time to get some extractors made...

[GTiR 14]

What did the manifold come off from??

SR20VET out of the X-Trail GT.

Innitially I too thought that the colour was due to intence heat but I managed to find another one (see pic below) that had the same colour characteristics.

[Maserati]

off an SR20VET..bit new to break like that

[kdavid]

i'm looking for the same manifold rite now. you have any idea where i can get one?

[ImamurA]

normally cast iron manifolds are very strong and durable but do you have a bonnet scoop or vent? if you do maybe it is a thermal fatigue fracture from water dropping on a hot manifold over a period of time...
thats the only thing i can think of that might crack a stock cast manifold

[ImamurA]

oh damn i now saw the original post date was in 2008 lol...

[kdavid]

lol. yea but i am trying to source one myself

[GTiR 14]

I was just lucky to get one off a guy doing a VET project. He replaced his with a custom manifold.