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Engine Specific Info and Questions => IDI Engine => Topic started by: greggearhead on April 25, 2006, 10:51:26 am

Title: Ported head numbers?
Post by: greggearhead on April 25, 2006, 10:51:26 am

Wondering about porting 1.6TD head numbers.  I played with a 1.6 head eons ago and it responded well on the flowbench to simple cleanup work, but it has been a long time and my notes are at home.  Wondering if any of the shops have put one on the flowbench and modded it?

Title: Ported head numbers?
Post by: subsonic on August 11, 2007, 03:39:32 pm

Bump

Title: Ported head numbers?
Post by: subsonic on August 12, 2007, 08:53:26 am

Dave at Passenger has.  Perhaps he will post up the numbers.

Title: Ported head numbers?
Post by: 935racer on August 12, 2007, 10:39:07 am

They do respond fairly well to porting, the biggest thing to work on the the exhaust valve bowls, the port makes a very harsh 90 degree turn there and there is A LOT of material that needs to be removed. All in all its a typical German cylinder head, TERRIBLE ports and design, great casting! I can't remember the 1.6td flow #'s off the top of my head but I know with the TDI heads on a laminar flow bench we were pulling around 125cfm per intake port and about 122 cfm per exhaust port.