The studs are stock ARP and run all the way down to the base of the sleeve - they are a replacement for a Subaru engine and I used these because they are the right length and available in ARP2000 material. They are relieved in between the threads to provide a length that can stretch without creating...

Hi, The bore split each time - I have a feeling that it was due to the larger 82mm bore with too little wall thickness. The small engine takes a hammering and in a race situation sits between 5000 - 9000 rpm for decent periods and I believe the bores have been swelling and the cast iron fatiguing. I...

Hi guys. Our rules in NZ do permit the use of a billet block but for the international POWRI series this engine isn't permitted. The bore centreline is laid over at 45deg to give a lower COG and to improve packaging - it certainly helped when positioning the supercharger which weighs a healthy 13kg....