Compression Check Acceptable Numbers?, Compression Check |
|
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. |
|
Compression Check Acceptable Numbers?, Compression Check |
91422.7 |
Apr 25 2015, 05:20 PM
Post
#1
|
Newbie Group: Members Posts: 36 Joined: 8-October 14 From: Eugene, Oregon Member No.: 17,991 Region Association: Upper MidWest |
I'm working on a friends car and we checked the compression with it cold. We retrieved the following readings: #1 cyl 70 lbs, #2-80 lbs., #3-80 lbs., #4-100 lbs., Engine has been running for about 6 months. Based on these readings what do you suggest? Is it ok to go ahead and get the engine running and drive it like it is or are you taking a chance of doing further damage? Run some diesel or ATF through the carbs and see if that would loosen the valves up some, then recheck Compression after a few hundred miles or is it time to tear it down and do a Valve job? Thanks for any suggestions.
|
Dave_Darling |
Apr 25 2015, 10:34 PM
Post
#2
|
914 Idiot Group: Members Posts: 14,985 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
Adjust the valves and get it running. If those are the cold numbers, the warm numbers will probably be just fine.
--DD |
Lo-Fi Version | Time is now: 15th May 2024 - 01:52 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 ... |