HI

Can anyone tell me is it worth me cutting my Greddy cast manifold,
Like cutting of the manifold flange where it meets the head...between the 1 and 2 cylinders, and the 3 and 4 cylinders
To help it move when it gets COLD from HOT to help it not to crack!
Any help on this would be great
Thanks

 

i havent heard of greddy manifolds being prone to cracking. it cant hurt to do it. if you have it off the car it will be simple