• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

Any one know stock cylinder compression? Is it suppose to be 175psi?

  • Thread starter Thread starter fastf50rd
  • Start date Start date Aug 1, 2004
F

fastf50rd

New Member
Jan 17, 2003
720
1
0
mass.
Aug 1, 2004
#1
  • Aug 1, 2004
  • #1
I thought i messed up my motor because of the crazy pinging issue that just suddenly appeared. The car smelt quite funny and didn't sound too good so i did a compression test to just make sure things are still normal. Each cylinder is within 4psi of eacother, the only prob. is the pressure is up around 175 psi. To me this doesn't sound normal considering when i did the compression test before the s/c install, each cylinder was within 10psi of eacother peaking at 106 psi. The only thing i can think of is extreme carbon buildup. I ran the seafoam stuff through her, and i still have the same pinging issue.
 

Rootus

Officially Addicted
Feb 8, 2003
6,659
1
0
Portland, Oregon
Aug 1, 2004
#2
  • Aug 1, 2004
  • #2
It's difficult to draw any conclusions from the absolute value of the numbers. That said, I get 175 psi with my 58cc aluminum heads.

Why not just pull a bit of timing? I would want too much pinging with boost.

Dave
 
You must log in or register to reply here.

Similar threads

H
Ongoing Battle With Hydraulic Lifters
  • hailer06
  • Jun 8, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
7
Views
307
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 9, 2026
Noobz347
Engine Random Misfire at idle.
  • Gulftown980x
  • Jul 29, 2026
  • SN95 4.6L Mustang Tech
Replies
11
Views
203
SN95 4.6L Mustang Tech Friday at 9:26 AM
squeak93
S
Fuel ‘88 GT Runs Rich Cold — Fixes Itself When I Unplug Sensors (ECT, MAF, O2, etc.)
  • Sufarry
  • Nov 6, 2025
  • Fox 5.0 Mustang Tech
Replies
12
Views
876
Fox 5.0 Mustang Tech Nov 9, 2025
Mustang5L5
Help! Intake Manifold Gasket or Head Gasket?
  • foxbodyclark
  • Oct 4, 2024
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
10
Views
1K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jan 4, 2026
95 Laser GT Ver
B
'03 GT Fuel Pump/Pressure/Delivery Issue
  • Brodach
  • Oct 21, 2025
  • SN95 4.6L Mustang Tech
Replies
8
Views
923
SN95 4.6L Mustang Tech Oct 31, 2025
gkomo
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?