 16v heads? |
|
|
|
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. |
|
|
  |
| fieroguy |
 Dec 25 2008, 06:04 AM
Post
#1
|
|
Newbie  Group: Members Posts: 1 Joined: 24-December 08 From: oregon Member No.: 9,866 Region Association: Pacific Northwest  |
sorry to be such a newbe but is there a way to get these to work on the porsche engine?
16v heads. http://www.araoengineering.com/VWheads.htm if not, i bet they would make em for the porsche, considering pepole with porsches might have more money. |
   |
 
|
| URY914 |
Dec 25 2008, 06:57 AM
Post
#2
|
|
I built the lightest 914 in the history of mankind. Group: Members Posts: 121,017 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
Well I would start by saying those heads are designed for a Type 1 VW engine.
|
|
|
|
| carr914 |
Dec 25 2008, 07:10 AM
Post
#3
|
|
Racer from Birth Group: Members Posts: 118,992 Joined: 2-February 04 From: Tampa,FL Member No.: 1,623 Region Association: South East States  |
And they are $4,400. Just have Jake build you a motor.
T.C. |
|
|
|
| So.Cal.914 |
Dec 25 2008, 10:13 AM
Post
#4
|
|
"...And it has a front trunk too." Group: Members Posts: 6,588 Joined: 15-February 04 From: Low Desert, CA./ Hills of N.J. Member No.: 1,658 Region Association: None |
I would think the cam and followers are going to wear excessively.
|
|
|
|
| Katmanken |
Dec 25 2008, 12:42 PM
Post
#5
|
|
You haven't seen me if anybody asks... Group: Members Posts: 4,738 Joined: 14-June 03 From: USA Member No.: 819 Region Association: Upper MidWest |
Nice job of fitting it all in there with unique rocker arms.
Those are big valves- not a lot of room for quench. Might be more efficient with smaller valves. It's a drag head, not sure about long term reliability. Note the welding in the cylinder head. And, the rocker arms are formed from stock parts that are cut and sectioned and welded... Thats a lot of weld on those rocker arms. That will increase the valvetrain mass and the spring force needed to control them... Ken |
|
|
|
| Jake Raby |
Dec 25 2008, 06:54 PM
Post
#6
|
|
Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
I am working with a developmental partner in Germany who has just completed a CNC DOHC (4 valve) head that can be applied to the TIV and 911 engine as well.
We should have some test units over the summer of 09... They'll cost more than most engines, but the capabilities are never ending with them. This post has been edited by Jake Raby: Dec 25 2008, 06:55 PM |
|
|
|
| carr914 |
Dec 25 2008, 06:57 PM
Post
#7
|
|
Racer from Birth Group: Members Posts: 118,992 Joined: 2-February 04 From: Tampa,FL Member No.: 1,623 Region Association: South East States |
You're always on the cutting edge Jake, keep up the goodwork.
T.C. |
|
|
|
| Jake Raby |
Dec 25 2008, 07:50 PM
Post
#8
|
|
Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Will do!
|
|
|
|
| Chris Hamilton |
Dec 25 2008, 08:57 PM
Post
#9
|
|
Senior Member Group: Members Posts: 611 Joined: 7-March 06 From: Berkeley, CA Member No.: 5,687 |
Watch out for those guys, I've seen a lot of posts on forums about people sending them money and never getting product. Google their name for more info.
edit: this is in reference to Arao engineering. |
|
|
|
| Jake Raby |
Dec 25 2008, 09:12 PM
Post
#10
|
|
Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Different guys..
I have been working with these people for over 4 years- never an issue. |
|
|
|
| Chris Hamilton |
Dec 25 2008, 09:24 PM
Post
#11
|
|
Senior Member Group: Members Posts: 611 Joined: 7-March 06 From: Berkeley, CA Member No.: 5,687 |
QUOTE(Jake Raby @ Dec 25 2008, 07:12 PM)  Different guys.. I have been working with these people for over 4 years- never an issue. I meant Arao engineering in the first post. |
|
|
|
| Jake Raby |
Dec 25 2008, 09:34 PM
Post
#12
|
|
Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
OH... Yeah, I have heard the same.
Plus their set up is still pushrod driven, or at least it was last time I looked at it. They used to make a TI exhaust ported TIV head, but it had some serious cooling issues. |
|
|
|
| bugat5speed |
Mar 2 2009, 03:46 AM
Post
#13
|
|
Member Group: Members Posts: 92 Joined: 1-August 06 From: Germany Member No.: 6,554 |
 Hi,wanted to give you an update on the status of the Bug @ 5-Speed 4V DOHC-heads. Robert Bernauer, my partner in this projevt, now did the first few flowbench tests with the heads. The results are really impressive and we expect a very good performance of the engine. The heads with no adjustments made (only mounted) were already better than the best type 4 race heads he compared. He made 3 further tests with each time smaller adjustments and the flow data let us hope on a very good performance of the engine. Flow at 25" is: 1mm - 38,2 2mm - 70,9 3mm - 107,9 4mm - 144,1 5mm - 183,3 6mm - 210,7 7mm - 230,7 8mm - 245,8 9mm - 256,0 10mm - 263,7 11mm - 267,6 12mm - 272,2 All measurements without manifold. 12 mm with a primitive manifold 285,4 13 mm with this manifold 289,1. There are still some things to be done, so that we can expect a further improvement. But even if it stays like this we are very satisfied with what we have. Next week I will finally have the die/mold for the manifolds. As soon as we have the first casted manifolds Robert will test the whole range again with manifolds. More info to follow. Martin |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 7th June 2024 - 05:10 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.