4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Compression ?????

Thread Tools
 
Search this Thread
 
Old Apr 26, 2014 | 08:08 PM
  #1  
5 slow's Avatar
5 slow
Thread Starter
 
Joined: Apr 2014
Posts: 4
From: Nm
Default Compression ?????

Got 110 on left bank and 129 on the right bank. Test was done WOT, and all plugs were out. Just got the car it's a 2000 GT.
Old Apr 26, 2014 | 10:49 PM
  #2  
JC316's Avatar
JC316
4th Gear Member
 
Joined: May 2009
Posts: 1,925
From: DFW, TX
Default

It's a little lower than what I am used to seeing, but it's within tolerance. Are you having any problems, or just checking it out?
Old Apr 27, 2014 | 09:00 AM
  #3  
5 slow's Avatar
5 slow
Thread Starter
 
Joined: Apr 2014
Posts: 4
From: Nm
Default

Originally Posted by JC316
It's a little lower than what I am used to seeing, but it's within tolerance. Are you having any problems, or just checking it out?
The car starts smoking oil when it warms up. Runs really hard and has great oil pressure. Just trying to determine wether or not to pull the whole motor, or just the heads. Thanks
Old Apr 27, 2014 | 09:49 AM
  #4  
Chromeshadow's Avatar
Chromeshadow
3rd Gear Member
 
Joined: Apr 2011
Posts: 917
From: Wisconsin
Default

110 is on the low side. Sounds like a high mileage worn out engine to me. What are your goals with it? do you just want to get it to run as well as possible or get it into top shape?
Old Apr 27, 2014 | 11:37 AM
  #5  
5 slow's Avatar
5 slow
Thread Starter
 
Joined: Apr 2014
Posts: 4
From: Nm
Default

Originally Posted by Chromeshadow
110 is on the low side. Sounds like a high mileage worn out engine to me. What are your goals with it? do you just want to get it to run as well as possible or get it into top shape?
Just want a great looking/running street machine, and maybe supercharger later on. The motor is not original. The vin mark is X but the motor is a Romeo. When I did the clutch it has the larger flywheel and disk out of a 2004. So I have know idea where to start except tear it all down I guess.
Old Apr 27, 2014 | 12:16 PM
  #6  
JC316's Avatar
JC316
4th Gear Member
 
Joined: May 2009
Posts: 1,925
From: DFW, TX
Default

Originally Posted by 5 slow
The car starts smoking oil when it warms up. Runs really hard and has great oil pressure. Just trying to determine wether or not to pull the whole motor, or just the heads. Thanks
Originally Posted by 5 slow
Just want a great looking/running street machine, and maybe supercharger later on. The motor is not original. The vin mark is X but the motor is a Romeo. When I did the clutch it has the larger flywheel and disk out of a 2004. So I have know idea where to start except tear it all down I guess.

I would check the PCV system just to be safe, but yeah, sounds like it's starting to get some wear on the inside. Generally speaking, if it starts smoking when it's warm, the rings are starting to give out.
Old Apr 27, 2014 | 03:49 PM
  #7  
Chromeshadow's Avatar
Chromeshadow
3rd Gear Member
 
Joined: Apr 2011
Posts: 917
From: Wisconsin
Default

great looking/running street machine, and maybe supercharger later on
If it were me, I'd tear it down and check everything, I'd hate to build it up and have the engine blow up or keep getting worse.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
baddog671
Archive - Parts For Sale
20
Jul 26, 2016 01:20 PM
uedlose
The Racers Bench
4
Oct 1, 2015 08:31 PM
bconboy
2005-2014 Mustangs
16
Sep 21, 2015 12:52 PM
uberstang1
Classic Mustangs (Tech)
6
Sep 20, 2015 06:42 PM
1st 4 eyed fox
General Tech
2
Aug 24, 2015 06:56 PM




All times are GMT -5. The time now is 09:10 AM.