4age bigport head: port & polish

Threaded Mode | Linear Mode

4age bigport head: port & polish

11-12-2006, 09:58 PM

Post: #35

BenR

Member

Posts: 110
Joined: May 2005
Reputation: 0

I run 35-40 thou quench depth on all my engines.......i would run it smaller but i have to account for rod stretch at high rpm as it effectively closes up to 1 thou at 10,000rpm.

For your calculations, to get the quench depth you need to add the deck height of the piston to the gasket thickness.

So for a stock engine a 1.1mm gasket (0.043") and a deck height of say 0.5mm (0.020") then you will have a quench depth of 0.063" or 63 thou, which is too large to be effective.

If you have any questions regarding port configuration or ideas, feel free to post them up.

« Next Oldest | Next Newest »

Messages In This Thread

4age bigport head: port & polish - cj - 10-16-2006, 12:04 PM

[] - cannabolic - 10-16-2006, 02:26 PM

[] - NoHachi - 10-16-2006, 02:30 PM

[] - adomz - 10-16-2006, 10:28 PM

[] - BenR - 10-18-2006, 07:36 PM

[] - alimonos - 10-18-2006, 07:48 PM

[] - BenR - 10-18-2006, 07:54 PM

[] - NoHachi - 10-18-2006, 08:09 PM

[] - jamiemirror - 10-18-2006, 08:28 PM

[] - BenR - 10-18-2006, 08:39 PM

[] - BenR - 10-18-2006, 08:40 PM

[] - jamiemirror - 10-18-2006, 09:17 PM

[] - BenR - 10-18-2006, 09:35 PM

[] - jamiemirror - 10-18-2006, 09:52 PM

[] - Corey - 10-18-2006, 10:52 PM

[] - BenR - 10-18-2006, 11:12 PM

[] - Corey - 10-18-2006, 11:18 PM

[] - Os7213 - 11-08-2006, 07:08 AM

[] - Os7213 - 11-09-2006, 05:47 AM

[] - jamiemirror - 11-09-2006, 10:12 AM

[] - Os7213 - 11-10-2006, 08:20 AM

[] - Os7213 - 11-10-2006, 08:53 AM

[] - jamiemirror - 11-10-2006, 09:48 AM

[] - Os7213 - 11-10-2006, 12:33 PM

[] - NoHachi - 11-10-2006, 12:48 PM

[] - jamiemirror - 11-10-2006, 12:52 PM

[] - Os7213 - 11-10-2006, 01:08 PM

[] - jamiemirror - 11-10-2006, 01:22 PM

[] - Os7213 - 11-10-2006, 01:25 PM

[] - jamiemirror - 11-10-2006, 03:43 PM

[] - firehawk - 11-10-2006, 09:57 PM

[] - Os7213 - 11-11-2006, 04:10 AM

[] - BenR - 11-12-2006, 04:03 AM

[] - Os7213 - 11-12-2006, 09:24 AM

[] - BenR - 11-12-2006 09:58 PM

[] - Os7213 - 11-13-2006, 12:52 AM

[] - BenR - 11-14-2006, 03:52 AM

[] - Os7213 - 11-14-2006, 06:52 AM

[] - jamiemirror - 11-14-2006, 11:09 AM

[] - BenR - 11-14-2006, 02:36 PM

[] - BenR - 11-14-2006, 02:48 PM

[] - Os7213 - 11-14-2006, 08:24 PM

[] - BenR - 11-14-2006, 11:00 PM

[] - Os7213 - 11-18-2006, 09:33 AM

[] - BenR - 11-20-2006, 03:13 AM

[] - Os7213 - 11-20-2006, 07:21 AM

[] - BenR - 11-20-2006, 04:52 PM

[] - Os7213 - 11-20-2006, 05:55 PM

[] - BenR - 11-20-2006, 11:27 PM

[] - Os7213 - 11-21-2006, 04:53 AM

[] - Corey - 12-03-2006, 01:31 AM

[] - apardal - 12-03-2006, 03:11 AM

[] - jamiemirror - 12-03-2006, 07:35 PM

[] - Corey - 12-04-2006, 09:23 PM

[] - BenR - 12-05-2006, 01:40 AM

[] - Os7213 - 12-06-2006, 06:46 AM

[] - eight-six - 01-20-2009, 03:33 PM

[] - oldeskewltoy - 01-21-2009, 06:05 PM

[] - totta Crolla - 01-21-2009, 11:49 PM

[] - oldeskewltoy - 01-22-2009, 12:14 AM

[] - ZDoman - 01-22-2009, 12:52 AM

[] - eight-six - 01-22-2009, 12:35 PM

[] - tolisspi - 01-22-2009, 01:15 PM

[] - totta Crolla - 01-22-2009, 06:59 PM

[] - oldeskewltoy - 01-24-2009, 06:32 PM

Possibly Related Threads...
Thread		Author	Replies	Views	Last Post
	4AGE cylinder head plug removal	Ivan141	5	1,991	09-30-2023 09:47 PM Last Post: Ivan141
	Early tvis red top from e9 gti small or bigport?	Ryo	3	7,440	04-20-2018 09:14 AM Last Post: Ivan141
	10.8:1, 264/256° Bigport	nyberrg	4	6,258	06-12-2017 09:57 AM Last Post: nyberrg
	Small Port Swap	Alex170984	1	4,131	11-21-2016 01:46 PM Last Post: Alex170984
	Small Port 10.3 Pistons	Alex170984	1	4,309	10-25-2016 09:18 PM Last Post: oldeskewltoy

User(s) browsing this thread: 4 Guest(s)