im taring down my b16a. im wondering what size the arp head bolts are. ive used 14 and it seems like their stripping. ive tried 13 = too small. 9-16th = no go.

someone please help. i didnt throw this thing together and im now taring it down to install a new b16a. i just want to see how bad the cyl walls are.

thanks

 

They are SAE size and they are 12pt, not 6pt....which is where most people go wrong. I believe they are a 1/2" though.

 

1/2" 12 point socket......

 

^^

 

thanks fella much appreciated.