The tin-ware and intake manifolds for the 1500 'S' have been a headache for a couple of years thus far because there is just no simple way of cutting the tinware to enable the manifolds to be bolted in nicely and keep the tinware sealed in an original way due to the angles of the manifolds and them being attached by 3 x studs.
Anyway! I measured up and sliced each top piece similarly from side to side on the weekend then installed a nut-cert at the top of each opening to enable a small tinware plate to be installed once the manifolds are secured to the heads. This seemed to be the neatest and most correct way of doing the modifications.
As you can see, the sliced up tinware is going to enable the Okrasa intake manifolds to be secured without much drama now.
As shown above, the 3/4 side tinware is of course different to the 1/2 side because the oil cooler resides there and due to the way the air is ducted internally through the tinware because of the oil cooler, there wasn't the opportunity to open the tinware up further due to the multiple layers of steel. I think it's going to work fine however I had to move the nut-cert on this side over from center to make it work. I am betting that once the engine is back in the car with everything painted and fitted, almost nobody will even realise this engine has Okrasa heads anyway!