Who has built a 103mm+ 66mm stroke engine?, I'm bored and thinking |
|
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. |
|
Who has built a 103mm+ 66mm stroke engine?, I'm bored and thinking |
Chi-town |
May 1 2019, 10:21 PM
Post
#1
|
Senior Member Group: Members Posts: 851 Joined: 31-August 18 From: Disneyland Member No.: 22,446 Region Association: Southern California |
Ok let me start this with the statement that I'm not looking for opinions or theories on the subject
I want to know has anyone actually done it? I understand the bore to stroke ratio is over square I understand that it won't have any low end I'm not looking for reliability or 50k miles from it Yes I know the heads will need worked and I'll need a spicy cam to really make it zing. Have you built one? How did it run? How long did it last? Where did you get the P&C kit from? I have a spare 1.8 that I'm willing to invest in just to see what happens. |
Steve |
May 2 2019, 12:24 AM
Post
#2
|
914 Guru Group: Members Posts: 5,682 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California |
I had a 103mm x 71? 2 liter crank? The kit came from European Racing in the late 70’s. I had a 3/4 cam in it and dual 44 Weber’s. It sucked a valve before it made it to 10k miles. Over hauled it and then it broke a ring before it made it to 10k miles the second time around. It was very fast. Ran hot and I had to add an oil cooler. I jury rigged one to the engine lid with a fan. Later the car got rear ended on the avenue. It was totaled, but I was able to buy back the motor and sell it.
|
ChrisFoley |
May 2 2019, 05:27 AM
Post
#3
|
I am Tangerine Racing Group: Members Posts: 7,958 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None |
I had one 20 years ago. I bought it already assembled and rebuilt it to cure oil leaks and other assembly issues.
I used it in my street car and then in my race car before selling to someone else. The cam made power from 4500-7500 rpm, and had nothing below that, so leaving stop signs into traffic required a clutch dump. It was the most powerful engine I've ever had in my race car. I think dyno numbers were around 200 peak hp. I reached 125mph at the end of the front straight at Summit Point during a PCA club race around 1999/2000. Edited to add: mine was 102 x 66. |
rhodyguy |
May 2 2019, 07:01 AM
Post
#4
|
Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,188 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
P/C are going to run $3680. WOW. Case work? Extensive. Heads, rods.. Better have ALL of your ducks in a row BEFORE you put the trigger. Don't forget the exhaust system that will support the build. You're going to spend a lot of $. A LOT! How do you intend to feed this engine fuel?
|
Chi-town |
May 2 2019, 08:38 AM
Post
#5
|
Senior Member Group: Members Posts: 851 Joined: 31-August 18 From: Disneyland Member No.: 22,446 Region Association: Southern California |
I found a NOS set for less than $400, that's kinda the reason it peaked my interest.
The rest is easy/cheap/plentiful as it's still just a type 4 VW engine. @ChrisFoley thank you! I expect it to perform exactly as you describe. |
Lo-Fi Version | Time is now: 21st September 2024 - 06:57 PM |
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 ... |