Hi guys,
As I have heard a lot of discussions on this topic and there seems to be a lots of different meanings I would like to hear what the engine builders on here have to say.
Now, I know that the guys at Tomei use this dummyhead but there are as well a lots of guys who don't.
This for example I got from an local machine shop which does a lots of JZ engines:
"better let a lil more tolerance gap and make a good patient break in than bore the engine with a head on it
an EVO block with L19 ARP does an issue and then you need the dummy but no RB or JZ needs it"
In the german sky forum a guy measured the bore and after taking the dummyhead off and it made 0.03mm difference.
Thanks guys!
Cheers,
RoB
As I have heard a lot of discussions on this topic and there seems to be a lots of different meanings I would like to hear what the engine builders on here have to say.
Now, I know that the guys at Tomei use this dummyhead but there are as well a lots of guys who don't.
This for example I got from an local machine shop which does a lots of JZ engines:
"better let a lil more tolerance gap and make a good patient break in than bore the engine with a head on it
an EVO block with L19 ARP does an issue and then you need the dummy but no RB or JZ needs it"
In the german sky forum a guy measured the bore and after taking the dummyhead off and it made 0.03mm difference.
Thanks guys!
Cheers,
RoB