 Combustion camber design?? Whos' to copy??, Any "modern" engines use flat top piston |
|
|
|
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. |
|
|
  |
| Mueller |
 Sep 2 2003, 05:51 PM
Post
#1
|
|
914 Freak!  Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
 |
If one wanted to make new heads (pick one of the following, mabey a combination of two or more (IMG:style_emoticons/default/smile.gif) )
billet new cast 2 valve 3 valve 4 valve watercooled aircooled oil-cooled hemi-head twin-plug single plug What "modern" engine would make a good "pattern" to copy for combustion chamber design?? Ideally, keeping the same basic intake and exhaust configurations would be nice....larger diameters or the location could be changed a little, but I'd want to keep them as close to stock locations as possible Does any manufacture make a decent modern motor with flat top or slightly dished pistons similar to those on Type IV motors? |
   |
 
|
| Charles Deutsch |
Sep 2 2003, 05:54 PM
Post
#2
|
|
Unregistered |
How about the last year of Porsche's air-cooled flat-six motor?
|
|
|
|
| airsix |
Sep 2 2003, 05:59 PM
Post
#3
|
|
I have bees in my epiglotis Group: Members Posts: 2,196 Joined: 7-February 03 From: Kennewick Man (E. WA State) Member No.: 266 |
I'd look at bikes, Honda S2000, and other mega-hp-per-displacement motors.
-Ben M. ps - see if you can come up with something with overhead cams please. Thnx (IMG:style_emoticons/default/wink.gif) |
|
|
|
| J P Stein |
Sep 2 2003, 10:02 PM
Post
#4
|
|
Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
Hummm....The "latest & greatest" thinking that I have read is the pentroof head. Cosworth came up with it some time back. 4 valve with 38 deg included angle twixt the int & exh side. F1 engine builders are not eager to share their newest stuff, so that's bout all I know. The shallow chamber gives high compression
with a low piston dome.....better flame propagation. You can bet your ass that they already have something better or they wouldn't let this out. 4 valbes & 2 cams per bank. How they get good port angle is beyond me. Water cooled, of course. Nobody was able to make a good 4 valbe air cooled head.....and many tried, I understand. |
|
|
|
| Dave_Darling |
Sep 3 2003, 11:46 AM
Post
#5
|
|
914 Idiot Group: Members Posts: 15,002 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
|
Well, some of the motorcycle manufacturers have... But an MC engine is not a car engine! Different constraints, different aims.
--DD |
|
|
|
| PatW |
Sep 3 2003, 01:45 PM
Post
#6
|
|
Wassup? Group: Benefactors Posts: 565 Joined: 19-February 03 From: Rocklin, CA Member No.: 317 Region Association: Northern California  |
During the last Mopar Alley meet. A guy brought in the head off a late model V6 and a 70's 440 to show the difference in the swirl and how far the technology has come. Looked like to me that Mopar was thinking about swirl long before anyone else. (see Hemi)
my .02c. Pat |
|
|
|
|
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 2nd July 2024 - 10:41 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.