Brought to you in part by:


Tools and Supplies at Eastwood

  Mustangsandmore Forums
  '64 1/2 to '73 -- The Classic Mustang
  Compression ratio test results interpretation

Post New Topic  Post A Reply
profile | register | preferences | faq | search

UBBFriend: Email This Page to Someone! next newest topic | next oldest topic
Author Topic:   Compression ratio test results interpretation

Posts: 354
From: France
Registered: Apr 2002

posted 08-30-2002 11:36 AM     Click Here to See the Profile for Pierre   Click Here to Email Pierre     Edit/Delete Message   Reply w/Quote
I tested my SB for compression (engine cold, I will probably re-do it when warm !!)

min cylinder was 155 psi, max was 165. I guess these numbers will climb with a warm engine.

Are these figures normal (is engine healthy)?
And can I get an estimation on the static comp ratio from these numbers (cam is 214/224 @0.050) ?

IP: Logged

69 Sportsroof

Posts: 960
From: Valley, Alabama, USA
Registered: Mar 2002

posted 08-30-2002 02:10 PM     Click Here to See the Profile for 69 Sportsroof   Click Here to Email 69 Sportsroof     Edit/Delete Message   Reply w/Quote
You definately want to do the check with the engine warm. What you are looking for is not a specific psi rating but one that is fairly consistant across all 8 cyliners. Somewhere around 5 to 7 % difference.

IP: Logged

All times are ET (US)

next newest topic | next oldest topic

Administrative Options: Close Topic | Archive/Move | Delete Topic
Post New Topic  Post A Reply
Hop to:

Contact Us | Mustangsandmore Front Page

Copyright 2003, Steve LaRiviere. All Rights Reserved.

Ultimate Bulletin Board 5.47d

Amazon Honor System Click Here to Pay Learn More

[The M&M Gearhead Gear Store]

[Acronyms][Calendar][Chat][Classifieds] [Links] [Members' Pics] [Tech] [ Bookstore] [Advertise on] [ T-Shirts]