1. The price of spark plugs in heat range 7 is very expensive
2. The valve stems that work on the guide are expensive
3. To get retainers for this is nearly impossible!!
4. Due to the bigger amount of water around the combustion chamber to cool everything You cannot open the exhaust port properly with a CSA of 2.2' which is required for a 92 x 92 build, Not to talk about a 92 x 100 motor!!!
5. The head in itself is to expensive
6. Te WOW factor of the head doesnt justify the expenses for it!!
2. The valve stems that work on the guide are expensive
3. To get retainers for this is nearly impossible!!
4. Due to the bigger amount of water around the combustion chamber to cool everything You cannot open the exhaust port properly with a CSA of 2.2' which is required for a 92 x 92 build, Not to talk about a 92 x 100 motor!!!
5. The head in itself is to expensive
6. Te WOW factor of the head doesnt justify the expenses for it!!