compression ratio - Team Camaro Tech
Tech 2001 General Tech questions from 2001
Replies ONLY, no new topics.

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old Dec 10th, 01, 07:41 PM Thread Starter
Tech Team
 
Join Date: Nov 2001
Location: SAN DIEGO, CA
Posts: 45
Post

Is there any way to determine compression ratio without access to cam specs? if so how? Thanks in advance
SOUTHWNR is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old Dec 11th, 01, 05:05 AM
Senior Tech
 
Join Date: May 2001
Location: Austin TX USA
Posts: 501
Post

The cam won't alter your compression ratio. It could impact your compression...a long duration stick will bleed off compression early in the sqeeze stroke, but the CR stays the same. For this reason, a stick with a little longer duration can help reduce pinging (detonation).
Sleepy-69 is offline  
post #3 of 7 (permalink) Old Dec 11th, 01, 05:20 AM
Senior Tech
John
 
Join Date: Feb 2001
Location: Maine
Posts: 3,099
Post

if you are looking for dynamic compression, measured in psi, just run the engine and pop a compression tester in one spark plug hole at a time. the camshaft can effect this measure of compression. If you are looking for static compression, measured as a ratio like 9:1 for example, yes it can be measured without cam specs. To do this, you must look into some math... In another recent post DjD outlined the equations that will help you out. I'll try to find it....
boodlefoof is offline  
 
post #4 of 7 (permalink) Old Dec 11th, 01, 05:33 AM
Senior Tech
John
 
Join Date: Feb 2001
Location: Maine
Posts: 3,099
Post

https://www.camaros.net/forum/Forum4/HTML/003084.html

well, this isn't the thread I was thinking of, but it may still help you out.
boodlefoof is offline  
post #5 of 7 (permalink) Old Dec 11th, 01, 06:03 AM
DjD
Retired
Dennis
 
DjD's Avatar
 
Join Date: Apr 1999
Location: Fortuna, CA
Posts: 26,529
Garage
Post

Yah it was... The last post has a link to this site.. http://cochise.uia.net/pkelley/crc.htm If you know the right numbers to input it works well!!

------------------
...Dennis
"The '69, the '96 & the club"
DjD is offline  
post #6 of 7 (permalink) Old Dec 11th, 01, 07:53 AM
Tech Team
 
Join Date: Jul 2001
Location: caldwell,id,usa
Posts: 73
Post

try this site http://www.bgsoflex.com/auto.html this might help
badcam is offline  
post #7 of 7 (permalink) Old Dec 11th, 01, 09:07 AM Thread Starter
Tech Team
 
Join Date: Nov 2001
Location: SAN DIEGO, CA
Posts: 45
Post

WOW! I need to do a lot more research into my engine. Irecently bought my 68 with 383, but I dont know a lot of the information required to figure out the CR. Basically it runs poorly when I use anything less than 92 octane. I tried to adjust the timing, but it only helped a little. Thanks for all the links, they will be very useful in the future.
SOUTHWNR is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome