cracked s60r manifold

[Bigsi15]

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Hi guys
Im sure this has been mentioned before but im after a bit of specific advice... I bought a s60r exhaust manifold ages ago for my 850 build and have just noticed 2 cracks inside the manifold :(

So basically is this a problem or can I just use it as they arent showing in any way on the back side of the manifold.
could they be welded?
could I just port out my original t5 manifold for similar performance?

Iv posted pics of both manifold for reference

Thanks all!

[MoleT-5R]

It's totally normal for small cracks like those to be there, I have just ported my one out recently and though there were no cracks visible before I started grinding, as I went on I found a few. As long as they don't go right through, it should still have a long service life ahead. Cast can be welded but I would say that it is a specialist job as the casting would need even heating before any welding is done to prevent further cracking or distortion. If should be fine as it is.

[Bigsi15]

Ok that's good to hear thanks buddy! There are no marks, lines, bulges or discolouration to the back side of it so hopefully pretty superficial. Tbh if it only lasts a year so long as it doesn't render the car undrivable or a bit breaks off and trashes the turbo I don't mind too much

[MoleT-5R]

Ok that's good to hear thanks buddy! There are no marks, lines, bulges or discolouration to the back side of it so hopefully pretty superficial. Tbh if it only lasts a year so long as it doesn't render the car undrivable or a bit breaks off and trashes the turbo I don't mind too much

I had a standard 850 t-5 one crack and burn through but it had done about 250,000+ miles so a pretty long lasting item in my book, even with the harsh conditions turbocharging causes to these engines and ancillaries