 Compression Test Results a Concern? |
|
|
|
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. |
|
|
| Alfafan |
 Mar 26 2019, 03:00 PM
Post
#1
|
|
Newbie  Group: Members Posts: 5 Joined: 26-March 19 From: Los Angeles Member No.: 22,993 Region Association: Southern California  |
Hi All,
I'm looking into the purchase of a '73 2.0L and have the car at a local specialist shop for a PPI. The car has a recent engine rebuild with about 500 miles since. It runs well with the only exceptions that it surges and falls a bit at idle (I wasn't too concerned about that), but the compression test readings that were just relayed back to me are a concern. The compression readings are 110, 110, 110 and 120psi. Would these numbers be in the normal range for a fresh engine? They seem low to me. I'm waiting for a call from the mechanic with the particulars including confirming how the test was done (hot engine, thottle wide open, plugs out...etc?). Assuming the test was done correctly, would these values point to a problem? Is it possible that the engine is not fully broken in and the readings would be expected to rise? Thanks for your help! |
   |
 
|
Posts in this topic
Alfafan Compression Test Results a Concern? Mar 26 2019, 03:00 PM
914_7T3 :wttc:
When I did a PPI on my '73 2.0 with t... Mar 26 2019, 03:47 PM BK911 Leakdown Mar 26 2019, 04:00 PM thelogo
Hi All,
I'm looking into the purchase of a ... Mar 26 2019, 04:10 PM worn
Hi All,
I'm looking into the purchase of a ... Mar 26 2019, 05:18 PM jdamiano They are very consistent across all cylinders. Nor... Mar 26 2019, 06:37 PM SirAndy How were those 500 miles accumulated? Maybe the ri... Mar 26 2019, 06:39 PM VaccaRabite A fresh T4 should have about 150-160
120 is servi... Mar 26 2019, 07:19 PM bdstone914 The numbers depend on how the engine was built and... Mar 26 2019, 09:21 PM
worn
The numbers depend on how the engine was built an... Mar 27 2019, 06:15 PM Alfafan The shop did a second compression test yesterday a... Mar 27 2019, 07:41 AM DickSteinkamp I wonder if FAT built it as a turbo/blower motor? Mar 27 2019, 08:23 AM Tdskip Welcome!
Not too many of us have Alfas here b... Mar 27 2019, 08:39 AM Tdskip Oops-should’ve added that the people at FAT are ... Mar 27 2019, 08:53 AM Dave_Darling The motor on the car I bought was dead-nuts on 100... Mar 27 2019, 03:35 PM Valy There is a lot in common between the 914 and the A... Mar 27 2019, 06:26 PM Tdskip Btw - if you post pictures of the car (loads of th... Mar 28 2019, 06:15 AM Alfafan Great idea on checking with FAT Performance about ... Mar 28 2019, 10:00 AM Tdskip
Great idea on checking with FAT Performance about... Mar 28 2019, 10:46 AM  |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 17th June 2024 - 05:28 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.