Wap, wap, wap. |
|
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. |
|
Wap, wap, wap. |
Bee Jay |
Apr 25 2005, 04:54 PM
Post
#1
|
Member Group: Members Posts: 204 Joined: 22-April 05 From: Lompoc, Ca. Member No.: 3,964 |
I didn't make the WCC because of this sound coming from the engine compartment. It didn't get louder when we plugged the tailpipe. I ran a compression check this weekend. Cylinders 1,2 & 3 were 100lbs +- 5%, but number four was only 50lbs. OK, the head is either cracked or the head to piston seal is gone. There are only 4K miles on the engine since Wayne Dempsey, Tom Gould and I built it in 2000. There was a lot of debate at the time on whether or not to include the copper "head gasket" and the popular advice was to leave it out. Am I to regret that decision? My 3.0 motor isn't ready, I haven't even started tearing it down yet, so I guess I need to drop this 2.0 liter, and repair the head leak, if I want to drive it this summer.
Bee Jay My car: http://www.picturetrail.com/gallery/view?p...2754&uid=598455 |
r_towle |
Apr 25 2005, 05:15 PM
Post
#2
|
Custom Member Group: Members Posts: 24,680 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
if its head to cylinder, then you need to make sure those surfaces are lapped correctly prior to final assembly...otherwise it will happen again.
the machining is very important that the cylinder to head and cylinder to case connections. These must be square and flat...then lapped. Good luck No gaskets if done correctly. Rich |
Lo-Fi Version | Time is now: 6th January 2025 - 03:47 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 ... |