VB242
I.M. Weasel
- Joined
- Sep 21, 2011
- Location
- Driving the No Malarkey Bus
I'm having issues with detonation after I retarded the cam timing on my 8V B23+T, enough to pop the GD head gasket once again. I keep adding fuel, the timing is 7 degrees in the range I'm getting the knock. Is there something I don't understand about dynamic compression ratio that I will not be able to tune this problem away? It's an IPD turbo cam, microsquirt, fuel system and injectors are fairly new. I'll be testing volume from the injectors to rule that out. It runs fine though the rest of RPM range and only knocks between 10-15psi around peak torque.