Looks like im leaving the ports alone and changing cam and valve springs. what are the standard retainers like?

Quote: Originally Posted by TUXEDO [View Post] Yeah, I learnt at trade school that RB30 heads are very easy to go backwards when modifying the ports. I would love a CNC'd head lol Agree i was told buy my tuner leave ports alone and my motor had no dramas making power im after

CNC all the way!

It about $1600-1800 to get a RB30 head CNC and reconditioned ready to bolt on from Bullet or AED!!! Why bother with hand porting...

What's the go with CNC?? I had the head machined/ported & flowed with the flow bench. What the difference between flowing & CNC??

You dont know anything about CNC machining/porting? and the advantages it has over hand porting? Hand porting has its place but the consistancy of CNC and turn around time just makes hand porting look like a waste of time!!! http://www.youtube.com/watch?v=5xzBACjO_3Q http://www.bulletcylinderheads.com.a...-heads/?ids=68 (http://www.bulletcylinderheads.com.au/cylinder-heads/?ids=68)

The bloke who built my head didn't hand port the head. It was a weird looking contraption. Had all the same things as the CNC but he used dials & a computer to control the porting machine & the porting machine sat on top of a vacuum bench.

Quote: Originally Posted by Bro_Speed [View Post] Looks like im leaving the ports alone and changing cam and valve springs. what are the standard retainers like? Yeh i think if your not after big hp its the perfect way to go and remember when opening up any ports the car will feel dowy down low.

Quote: Originally Posted by PROMASTER [View Post] Yeh i think if your not after big hp its the perfect way to go and remember when opening up any ports the car will feel dowy down low. When I had the exhausts ports ported. It actually made the turbo spool quicker.