Go Back   Ford F150 Forum - Community of Ford Truck Fans > Pre-1997 F150 > 1987 - 1996 F150
Sign in using an external account
Register Forgot Password?


Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 12-21-2009, 10:35 PM   #1
Assistant Administrator
5 Year Member
 
ymeski56's Avatar
 
Join Date: Jul 2008
Location: Long Beach Calimexifornia
Posts: 31,034
Mentioned: 12 Post(s)
Thanks: 51
Thanked 587 Times in 345 Posts
Feedback Score: 0 reviews
Default 302 cylinder compression PSI

What is stock cylinder compression for a 302 c.i. ? As long as we're on the subject, how about a 300 c.i. also?
__________________
"Saving the World....One Ford Truck at a Time."
ymeski56 is online now   Reply With Quote
Old 03-02-2010, 09:34 PM   #2
Senior Member
 
grilljames's Avatar
 
Join Date: Dec 2009
Location: Rockford IL
Posts: 387
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Skype™ to grilljames
Default

1987-1995 302
9.0:1 Compression
4.0 X 3.0 (Bore X Stroke)


1987-1995 300-06
8.8:1 Compression
4.0 X 3.98 (Bore X Stroke)

old subject but i got board and sniffed thru old posts :-D
__________________
I <3 my Truck
1995 F-150 302 E4OD 2wd Ext cab
1989 Lincoln Town Car 302 AOD
grilljames is offline   Reply With Quote
Old 03-02-2010, 09:56 PM   #3
Assistant Administrator
5 Year Member
 
ymeski56's Avatar
 
Join Date: Jul 2008
Location: Long Beach Calimexifornia
Posts: 31,034
Mentioned: 12 Post(s)
Thanks: 51
Thanked 587 Times in 345 Posts
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by grilljames View Post
1987-1995 302
9.0:1 Compression
4.0 X 3.0 (Bore X Stroke)


1987-1995 300-06
8.8:1 Compression
4.0 X 3.98 (Bore X Stroke)

old subject but i got board and sniffed thru old posts :-D
Keep sniffin! They're compression ratios, not cylinder compression. Where did you dig up this thread? I don't even remember posting it!
__________________
"Saving the World....One Ford Truck at a Time."

Last edited by ymeski56; 03-02-2010 at 10:01 PM.
ymeski56 is online now   Reply With Quote
Old 03-02-2010, 10:02 PM   #4
Senior Member
 
grilljames's Avatar
 
Join Date: Dec 2009
Location: Rockford IL
Posts: 387
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Skype™ to grilljames
Default

ohhhhh i read it backwards..... :-D
__________________
I <3 my Truck
1995 F-150 302 E4OD 2wd Ext cab
1989 Lincoln Town Car 302 AOD
grilljames is offline   Reply With Quote
Old 03-02-2010, 10:08 PM   #5
Assistant Administrator
5 Year Member
 
ymeski56's Avatar
 
Join Date: Jul 2008
Location: Long Beach Calimexifornia
Posts: 31,034
Mentioned: 12 Post(s)
Thanks: 51
Thanked 587 Times in 345 Posts
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by grilljames View Post
ohhhhh i read it backwards..... :-D
? c.i. 302 a for compression cylinder stock is What
__________________
"Saving the World....One Ford Truck at a Time."
ymeski56 is online now   Reply With Quote
Old 03-02-2010, 10:14 PM   #6
Senior Member
 
J.A.C's Avatar
 
Join Date: Dec 2009
Location: Fresno California
Posts: 312
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Yahoo to J.A.C
Default

You talking about compression test.
J.A.C is offline   Reply With Quote
Old 03-02-2010, 10:15 PM   #7
Senior Member
 
grilljames's Avatar
 
Join Date: Dec 2009
Location: Rockford IL
Posts: 387
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Skype™ to grilljames
Default

is that a trick question? HAHA
__________________
I <3 my Truck
1995 F-150 302 E4OD 2wd Ext cab
1989 Lincoln Town Car 302 AOD
grilljames is offline   Reply With Quote
Old 03-02-2010, 10:22 PM   #8
Senior Member
 
grilljames's Avatar
 
Join Date: Dec 2009
Location: Rockford IL
Posts: 387
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Skype™ to grilljames
Default

Quote:
Originally Posted by ymeski56 View Post
? c.i. 302 a for compression cylinder stock is What

the lowest reading should be with in 75% of the highest reading
Example: If your highest reading is 150 PSI then your lowest reading should be no less the 113 PSI. (113 PSI = 75% of 150PSI ) I found it in the fine print of my chilton... hard for old guys to read i know.
__________________
I <3 my Truck
1995 F-150 302 E4OD 2wd Ext cab
1989 Lincoln Town Car 302 AOD
grilljames is offline   Reply With Quote
Old 03-02-2010, 10:42 PM   #9
Assistant Administrator
5 Year Member
 
ymeski56's Avatar
 
Join Date: Jul 2008
Location: Long Beach Calimexifornia
Posts: 31,034
Mentioned: 12 Post(s)
Thanks: 51
Thanked 587 Times in 345 Posts
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by grilljames View Post
the lowest reading should be with in 75% of the highest reading
Example: If your highest reading is 150 PSI then your lowest reading should be no less the 113 PSI. (113 PSI = 75% of 150PSI ) I found it in the fine print of my chilton... hard for old guys to read i know.
I know that drill too. To be more specific, I get 179-182 psi on all cylinders (302 c.i.) I'm wondering if my gauge is wacked, because it seems kinda high. I didn't disconnect the fuel pump, so I'm also wondering if i should consider these dry or wet readings.
__________________
"Saving the World....One Ford Truck at a Time."
ymeski56 is online now   Reply With Quote
Old 03-02-2010, 10:46 PM   #10
Senior Member
 
grilljames's Avatar
 
Join Date: Dec 2009
Location: Rockford IL
Posts: 387
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Skype™ to grilljames
Default

id try it dry but i doubt that little of fuel would push it up and i was once told 300-6 r high comp. engines i dont have the slightest clue.... i got an idea
EVERYONE POST YOUR COMPRSSION READS ON HERE SO WE ALL HAVE SOMETHING TO GO OFF OF and ur year, mileage, and motor
__________________
I <3 my Truck
1995 F-150 302 E4OD 2wd Ext cab
1989 Lincoln Town Car 302 AOD
grilljames is offline   Reply With Quote
Old 03-02-2010, 10:46 PM
 
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
302 cylinder compression PSI ymeski56 1987 - 1996 F150 4 12-24-2009 08:52 AM
93 4.9l compression? |WYG|SS 1987 - 1996 F150 9 09-16-2009 02:47 PM
No Compression in cylinder 8 (Please help) Freedom Racing 1997 - 2003 Ford F150 35 02-27-2009 06:06 PM
What should Compression PSI be on a '92 4.9L? nickjaynes 1987 - 1996 F150 9 02-19-2009 06:47 PM
No Compression walliso1 Pre- 1987 / Classic Corner 2 12-08-2007 11:19 AM

Join F150 Forum

 

The Mustang Source
All times are GMT -4. The time now is 04:26 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2006 - 20011 F150forum.com
This site is in no way affiliated with the Ford Motor Company.