 Obtaining CAM shaft specs without disassembling the engine? |
|
|
|
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. |
|
|
| GGerg1186 |
 Dec 27 2020, 05:21 PM
Post
#1
|
|
Newbie  Group: Members Posts: 15 Joined: 28-September 20 From: Dubuque IA Member No.: 24,724 Region Association: Upper MidWest  |
I purchased a used 1.7L engine out of an autocross 914 car. Seller said it had a "performance cam" in it which could mean anything. Planning to pop a valve cover off with a dial indicator and the degree wheel on the front of the engine "spec" my cam. Should be able to get open, close, lift, and calculate duration. Should I put the dial indicator on the push rod side or the valve side of the rocker? Anyone had any success with identifying their cam without engine disassembly?
Next question, any way to determine compression ratio without removing the cylinder head? I am leaning towards removing the cylinder head just to see if I have cast or forged pistons & connecting rods. Ultimately, I want to know whether I can run regular pump gas, what max engine speed should be, and an appropriate carburation system to match the cam. Let me know your thoughts. |
   |
 
|
Posts in this topic
GGerg1186 Obtaining CAM shaft specs without disassembling the engine? Dec 27 2020, 05:21 PM
Mark Henry Pop the oil pump off, most aftermarket cams are st... Dec 28 2020, 07:35 AM mlindner I like Marks idea. but if you want to measure like... Dec 28 2020, 07:54 AM barefoot Cam makers specify valve lift, not lobe lift, so i... Dec 28 2020, 08:36 AM
Mark Henry
Cam makers specify valve lift, not lobe lift, so ... Dec 29 2020, 07:37 AM bbrock I don't want to hijack but I'm getting rea... Dec 29 2020, 09:13 AM GGerg1186
Am I correct that I need to multiply the CAM Lift... Dec 29 2020, 12:24 PM  |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 19th May 2024 - 07:58 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.