Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

> Cylinder head flow data
lmcchesney
post Jan 28 2004, 06:26 AM
Post #1


Member
**

Group: Members
Posts: 488
Joined: 24-November 03
From: Ocala, Fl.
Member No.: 1,381
Region Association: None
Does anyone have ranges for Type IV cylinder head flows with customary pocket porting and port matching? I believe is about 200-225CFM at each port. Also, any data on the effect of large valves on the flow rates? Any data on port velocities?
Yes, I know that miminal changes can produce significant changes in flow. However, in reality, there is not a lot of variations in the P/P of these heads.

Thanks,
L. McChesney
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
 Reply to this topicStart new topic
Replies
Bleyseng
post Feb 1 2004, 09:44 PM
Post #2


Aircooled Baby!
**********

Group: Members
Posts: 13,036
Joined: 27-December 02
From: Seattle, Washington (for now)
Member No.: 24
Region Association: Pacific Northwest
No Mark, it was the fact that they changed the VE curve so much and weren't also able to cool the motor. Maybe with nickies atleast you could keep the motor cool enough to survive long enough you could tune it.

I think Bretts idea is the best, just rip out the ECU internals and hide a MS brain in there!


Geoff
User is offlineProfile CardPM
Go to the top of the page
+Quote Post

Posts in this topic
lmcchesney   Cylinder head flow data   Jan 28 2004, 06:26 AM
DNHunt   Check over on Shop Talk Forums. I remember seeing ...   Jan 28 2004, 08:05 AM
SirAndy     Feb 1 2004, 02:04 PM
Mark Henry   <...   Feb 1 2004, 02:07 PM
Brett W   I am not saying don't try it but I can't u...   Feb 1 2004, 04:11 PM
Bleyseng   No Mark, it was the fact that they changed the VE ...   Feb 1 2004, 09:44 PM
Jake Raby   When you use "Cast iron clunkers" (103s that ARE N...   Feb 2 2004, 12:03 AM
ChrisReale   <...   Feb 2 2004, 12:52 AM
seanery   yes.   Feb 2 2004, 07:24 AM
Brett W   What are you talking about? Who got banned?   Feb 2 2004, 02:03 PM
Mark Henry     Feb 2 2004, 04:26 PM
Racer Chris  
 

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

- Lo-Fi Version Time is now: 2nd July 2025 - 11:51 PM
Invision Power Board v9.1.4 © 2025  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...