Judge Ito's porting school thread
11-25-2003, 05:34 PM
#1
Senior Member
Thread Starter
Join Date: Jan 2002
Location: NJ USA
Posts: 1,915
This is a Port I recently did for a customer. It's a pretty wild ported secondary side housings and a mild port on the center housing. I posted this pic to keep giving people an idea into porting. Remember that besides changing port shape you also need to change port volume inside the tunnel of the port.
First a pic of the stock port.
First a pic of the stock port.
11-25-2003, 06:06 PM
#4
Senior Member
Join Date: Jan 2003
Location: London, Ontario
Posts: 2,871
How much of the corner seal is supported still? I'm trying to compare this to a bridge in my head and it seems you've removed most of the material you would normally leave for the bridge itself.... 
Can you post a comparison pic?
Can you post a comparison pic?
11-25-2003, 06:14 PM
#5
Senior Member
Thread Starter
Join Date: Jan 2002
Location: NJ USA
Posts: 1,915
1/4's of the corner seal is supported by what is left of the port wall. I've done this type of port for another customer.(I won't say anynames ) but this port makes nice power throught the low,mid and high RPM range. This type of port has landed 700rwhp on 32lbs of boost with a 150 nitrous shot. to Xtreme of a wild port..
11-25-2003, 06:30 PM
#7
Senior Member
Thread Starter
Join Date: Jan 2002
Location: NJ USA
Posts: 1,915
Originally Posted by 93 R1' date='Nov 26 2003, 12:23 AM
Beautiful
Does it make good low/mid range power due to the "mild" porting on the center plate and huge top end due to the size of the secondaries?
Does it make good low/mid range power due to the "mild" porting on the center plate and huge top end due to the size of the secondaries?
11-25-2003, 06:31 PM
#8
Member
Join Date: Nov 2003
Posts: 82
excellent!
Judge, do you have picture of the runner of that port. like you said, the shape of port open matters, but the shape of the tunnel/port matter a lot too.
My understanding is that the tunnel/port runner suppose to shape like air nozzle which has throw/choke point and discharge/divergence. the area of throw/choke point determines the max amount of CFM(Velocity x Area - Losses) before it choke.
the way you shaped the port opening or should I said the way you shaped the discharge section matchs to my ideal port shape for discharge, that I had in mind. It will be nice to see how the master shape the tunnel!!
Judge, do you have picture of the runner of that port. like you said, the shape of port open matters, but the shape of the tunnel/port matter a lot too.
My understanding is that the tunnel/port runner suppose to shape like air nozzle which has throw/choke point and discharge/divergence. the area of throw/choke point determines the max amount of CFM(Velocity x Area - Losses) before it choke.
the way you shaped the port opening or should I said the way you shaped the discharge section matchs to my ideal port shape for discharge, that I had in mind. It will be nice to see how the master shape the tunnel!!
11-25-2003, 07:08 PM
#10
Senior Member
Join Date: Dec 2001
Location: Okinawa Japan at McDonalds
Posts: 472
Originally Posted by Judge Ito' date='Nov 26 2003, 09:14 AM
3/4's of the corner seal is supported by what is left of the port wall. I've done this type of port for another customer.(I won't say anynames ) but this port makes nice power throught the low,mid and high RPM range. This type of port has landed 700rwhp on 32lbs of boost with a 150 nitrous shot.
Very nice port by the way. Now I want to pull mine apart and try something else.