661 porting question

[climbit]

So with this new port design I'm trying to get some more flow. My question is specifically regarding the transfer ports. On the 660 I always went wider, never messing with height. I'm wondering if transfers can be opened up, height wise, and if that messes with "port timing" in any way raising and lowering the intake/exhaust does. I'm struggling to verbalized my thought but I hope this makes enough sense to get a response. So I'm just wondering generally if I can take the port up and down to increase the charge without worry about port timing in the way that one would worry about it on intake/exhaust.

What's working on the 661? My mod is going to require massive flow increase via the transfers to work and achieve what I'm looking for.

 

[blsnelling]

Have you degreed it?

 

[climbit]

No not yet, I was working on the intake and exhaust, opened up the bottom of the transfer. Lost the pressure switch on my compressor so I'm down for a little bit...I have the case split getting some crank work done. Is there a number I should target?

 

[blsnelling]

You need to find out where you are before making any decisions. Yes, raising the transfers alters you port timing and it's critical to performance.

 

[climbit]

Thanks, I'll measure it up