![]() |
|
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. |
|
![]() |
BPGREER |
![]()
Post
#1
|
Member ![]() ![]() Group: Members Posts: 131 Joined: 29-September 04 From: SAN FRANCISCO Member No.: 2,857 ![]() |
Well it looks like it may be time to tear my engine apart. McMark was kind enough to point out my lack of compression this weekend. It looks like I have about 110 lbs on 2 cylinders, and 120 on the other 2. The motor has 64,000 miles on it (original), but it did sit for 17 years in a garage by the ocean. A guess is that the cylinder walls have pitted. I am thinking about rebuilding the top end. I realize there are some who disagree with ever taking this approach, but being that the engine has relatively low miles I hope it will work out. If I do choose this method, what would you all suggest in the way of cylinders/pistons sets, etc. I am running the orig Djet, so would going with the 96mm setup still function properly? I'm not trying to stray too far from stock (or to spend too much $$$), but wouldn't mind a little extra power. Thanks for any advice.
Brian |
![]() ![]() |
McMark |
![]()
Post
#2
|
914 Freak! ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Retired Admin Posts: 20,180 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None ![]() |
It just depends on what you tolerance is for "problems". As it ages your engine starts going down on power and starts running a bit "funny". How long you want to live with that depends on the person. I agree that 110 or 120 psi isn't a severe case. But it is about a 25% loss in compression. You can take that engine to it's bloody edge, or you can rebuild it and bring it back to life. Factor into that the increased chance for catastrophic failure as the engine ages and engines at this point are really starting to enter the "rebuilt-it" territory, IMHO.
|
![]() ![]() |
![]() |
Lo-Fi Version | Time is now: 11th July 2025 - 06:33 AM |
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 ... |