I just saw the Jerry built engines. They are using a Sqare port on the intake side of the heads. It seems like a good idea until you start thinking about velocity of the air and turbulence in the chamber. What about the IM, that would have to be sqare, too. What do you guys think.

 

Now, I haven't seen any pics, but here are my thoughts.
I would think that, to have square ports, you would have to raise the floor of the ports a bit just so that you don't loose velocity. You would have to be very careful how you transition from the square port to the round valve as well...
But, with a flat roof, you could 'steer' the charge to get nice swirling into the cylinder...
Do have a link to the post?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by d16nomore &raquo;</TD></TR><TR><TD CLASS="quote">Do have a link to the post?
</TD></TR></TABLE>Just check the Sponsor's Marketplace section of Honda-Tech. He's a sponsor and have ads there.

 

Here is a link to the thread that I was talking about. I'm not sure about sqare porting. Ill email him for some answers.

https://honda-tech.com/zerothread?id=890185

 

I would say the square port heads are more for fully built high (meaning really high) compression motors. I saw what it did on Jerry's B series motor but you cant expect the same gains on a mildly built set up... You may actually lose a lot of low and mid, trading that for a few up top isnt always the best give and take for a street car.

 

Square porting works great when it is done rite.... Whats weird is that I saw this first being developed by RS machines and it was a big secret years ago and its only today that these kind of topics are popping up....

 

Well, what about the IM?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nathan atwell &raquo;</TD></TR><TR><TD CLASS="quote">Well, what about the IM? </TD></TR></TABLE>

if you go to ALANIZ, then he will tell you what you need to know, jerry uses his heads. good luck

 

WELL, there we are guys...I guess we have just discovered the secret the pros have been using. Good luck with all of your builds guys.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AMR Racing &raquo;</TD></TR><TR><TD CLASS="quote">Square porting works great when it is done rite.... Whats weird is that I saw this first being developed by RS machines and it was a big secret years ago and its only today that these kind of topics are popping up....</TD></TR></TABLE> i remember going to RS and seeing the heads back in the days. in the far back room under a blanket.