 Anybody Built a 10.5:1 Type 1 or 4 Engine?, Do they explode? |
|
|
|
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. |
|
|
| Series9 |
 Feb 9 2013, 10:15 PM
Post
#1
|
|
Lesbians taste like chicken.  Group: Members Posts: 5,446 Joined: 22-August 04 From: DeLand, FL Member No.: 2,602 Region Association: South East States  |
I build 10.5:1 /6 engines pretty regularly. 93 octane and single plug. That's about the limit without going twin-plug, but all of them on the road have been fine.
Why don't I see this in Type 1 or Type 4 engines? Some rough math suggests a 2.0 @ 8.5:1 is an 85hp engine, while the same engine at 10.5:1 would give almost 120hp. Just thinking out loud..... (IMG:style_emoticons/default/beerchug.gif) |
   |
 
|
  |
Replies
| euro911 |
Feb 10 2013, 03:52 PM
Post
#2
|
|
Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,888 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California 
|
When I mentioned the case, I should have elaborated - I was referring to installing case saver/inserts, the larger dia studs and the even extra studs to keep the heads secure. I've seen lesser compression pull head studs on stock cases (at least on T-1s).
|
|
|
|
Posts in this topic
Series9 Anybody Built a 10.5:1 Type 1 or 4 Engine? Feb 9 2013, 10:15 PM
Valy It's all about the cam you use. Longer duratio... Feb 9 2013, 10:36 PM euro911 Case design/strength? :confused:
Running a 9:1 C... Feb 9 2013, 10:37 PM larryM where ya planning to buy gas for it?
i paid ... Feb 9 2013, 10:41 PM messix i think it's more a question of what heads you... Feb 10 2013, 12:29 AM rick 918-S No short answer Joe. Here's my short answer. 1... Feb 10 2013, 12:31 AM Dave_Darling The 911 has a better combustion chamber and better... Feb 10 2013, 12:37 AM a914622 If you real want the 12-1 comp. motor to run you n... Feb 10 2013, 01:05 AM
Series9
I had a 12-1 type1 1300 that broke 2 trannys on... Feb 10 2013, 08:44 AM Dasnowman What about doing a modern efi system with aquamist... Feb 10 2013, 01:49 AM Racer Chris I had a 10.5:1 engine in my street 914 for a coupl... Feb 10 2013, 09:39 AM Tom_T
I build 10.5:1 /6 engines pretty regularly. 93 o... Feb 10 2013, 02:20 PM Mark Henry On the other end of the scale the 2007cc Gene Berg... Feb 10 2013, 11:02 PM r_towle
On the other end of the scale the 2007cc Gene Ber... Feb 11 2013, 02:37 PM Bleyseng a 2056 with 9 to 1CR with the right cam and valves... Feb 11 2013, 01:14 PM r_towle
I build 10.5:1 /6 engines pretty regularly. 93 o... Feb 11 2013, 02:40 PM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 11th May 2025 - 04:53 AM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.