New engine tragedy, Broken valve stem |
|
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. |
|
New engine tragedy, Broken valve stem |
Jetsetsurfshop |
Apr 2 2016, 06:36 PM
Post
#1
|
Senior Member Group: Members Posts: 814 Joined: 7-April 11 From: Marco Island Florida Member No.: 12,907 Region Association: South East States |
On my first outing with the new engine tragedy struck. While giving it a little bit of RPM the engine made a noise I never heard before and then dropped a cylinder. Limped it home and this is what I found today.
That's the top of the valve you see still with the keeper! Damn. Anyone have any thoughts on what happened here? Everything we did was the same as the last build except we installed a more aggressive camshaft. (IMG:style_emoticons/default/headbang.gif) Attached thumbnail(s) |
TheCabinetmaker |
Apr 3 2016, 05:48 AM
Post
#2
|
I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
I'm confused. Bigger valves, monster cam, dual springs, custom pushrods. How is that a stock valve train?
Then you say in your first post that you only added a more aggressive cam on the last build and used the old pushrods. Do you think they were still the right length? How many times have you rebuilt this engine? I know this might piss you off, but I think you should have someone else rebuild this engine properly. |
Lo-Fi Version | Time is now: 17th May 2024 - 04:59 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 ... |