RedCelicaTRD":15fkhrft said:You can use 11mm out of an Evo 8 I believe. Same pitch and all you need to do is tap the treads, no drilling involved. The head can get squished and stick onto the stud preventing removal. Hux Racing will make you a head support washer if you email them and ask.
RedCelicaTRD":2zqrd9z8 said:In my opinion once you’re getting north of 700hp. Either larger studs or more exotic materials. The head insert is always a good idea. It seems like Toyota head alloys from the 80s and 90s are a bit soft.
RedCelicaTRD":2ogtvc60 said:In my opinion once you’re getting north of 700hp. Either larger studs or more exotic materials. The head insert is always a good idea. It seems like Toyota head alloys from the 80s and 90s are a bit soft.