The plot thickens. - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > General Tech
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

General Tech Have a question that is not covered by one of the other categories? This is the forum for all other items not specifically covered in other categories.

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 01-04-2003, 03:17   #1 (permalink)
Formerly EAII_Fairmont
 
AUII_Forte's Avatar
 
Join Date: Aug 2002
Location: Dubbo NSW
Age: 29
Posts: 917
eek The plot thickens.

I am in the process of putting the second hand motor in my MPFI EA Ghia at the moment. Today I pulled the head off my old engine and was very surprised at the condition it was in! Very good really.

The problem I had was low compression in 3 cylinders, especially cyl 6. Looking at the bores cyl 6 still has the pattern from honing visible, meaning the engine had already been rebuilt at some stage (unless its been there since new which I doubt), but that also means the rings must have been leaking ever since it was rebuilt because the rings were not tight against the bores, well that my guess anyway.

The old motor was also playing up when it got hot. It was missing badly under load and severely under powered (at one stage I couldn't pass a B-Double truck loaded with cattle!! lol). It also sounded like it was sucking more air than normal, sounded like the air box lid was removed. I put all this down to the rings (do they normally cause those type of problems??), but when I got the motor out and pulled the intake gear off and had a look at the dizzy, I was shocked! The cap was corroded to the crapper, the rotor was almost non existant and the coil lead was split in several places. So me thinks that was a lot of the problem! But the problem occured suddenly, not over time.

Anyway, the head off the old engine is just about immaculate! Theres no oil goo anywhere!! Compression chambers have a bit of carbon, but thats normal. The bores have a tiny lip at the top, but can hardly be felt.

How long do you guys reckon it'd take to change the rings in the old engine and whats the cheapest way out of it (doing it myself)? It seems as if my old motor is in A LOT better condition than the one I just bought. New one has 3 month warranty on so I plan on getting the old motor back in action before the 3 months is up.
__________________
1992 AXII Telstar TX5 Ghia

121kW 2.5L DOHC V6 in a car that weighs 1100kg's and looks like a 4 banger from the outside......SLEEPER!

1988 EA S Pak 3spd CFI.....Soon to be a 250rwkw HSV eating machine.
Latest update......MPFI!!
AUII_Forte is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-04-2003, 04:32   #2 (permalink)
Registered User
 
Join Date: May 2002
Posts: 427
the cheapest way i can think of would be to use the acl repower(?) ring set which dont require the bores being honed.
jamesk is offline   Reply With Quote
Old 01-04-2003, 21:06   #3 (permalink)
Formerly EAII_Fairmont
 
AUII_Forte's Avatar
 
Join Date: Aug 2002
Location: Dubbo NSW
Age: 29
Posts: 917
Because the honing pattern is still visible, would this mean that the rings were never seated against the bore? Meaning the car has never performed to its full potential whilst in my ownership. Would I be better to get oversized rings? I'm not to sure how long the second hand motor is going to last it seems in worse condtion than the original, but the rings are ok.
__________________
1992 AXII Telstar TX5 Ghia

121kW 2.5L DOHC V6 in a car that weighs 1100kg's and looks like a 4 banger from the outside......SLEEPER!

1988 EA S Pak 3spd CFI.....Soon to be a 250rwkw HSV eating machine.
Latest update......MPFI!!
AUII_Forte is offline   Reply With Quote
Old 01-07-2003, 03:31   #4 (permalink)
Registered User
 
Join Date: May 2002
Posts: 427
hmm i dont know to be honest. im in the process of rebuilding an engine and from what ive been reading the honing marks go within the first 20 miles of driving so i dont know why they would still be there. is it possible the bores are badly scored is it it definately the honing pattern ?
someone here must be able to enlighten us
jamesk is offline   Reply With Quote
Old 01-07-2003, 10:36   #5 (permalink)
Registered User
 
Join Date: Sep 2002
Location: 27 00S 153 07E
Posts: 1,944
The honing pattern is usually a "crosshatch" pattern, which would be hard to duplicate by scoring.
__________________
"I married Miss Right. I just didn't know her first name was Always."
TopGhia is offline   Reply With Quote
Old 01-09-2003, 02:15   #6 (permalink)
Formerly EAII_Fairmont
 
AUII_Forte's Avatar
 
Join Date: Aug 2002
Location: Dubbo NSW
Age: 29
Posts: 917
It's deffinately honing pattern.
__________________
1992 AXII Telstar TX5 Ghia

121kW 2.5L DOHC V6 in a car that weighs 1100kg's and looks like a 4 banger from the outside......SLEEPER!

1988 EA S Pak 3spd CFI.....Soon to be a 250rwkw HSV eating machine.
Latest update......MPFI!!
AUII_Forte is offline   Reply With Quote
Old 01-09-2003, 02:20   #7 (permalink)
Registered User
 
Join Date: Apr 2002
Location: Brisbane
Age: 47
Posts: 341
Is it possible that the rings are undersized for the bore.
cs123 is offline   Reply With Quote
Old 01-09-2003, 02:22   #8 (permalink)
96 EF Futura
 
SiX_iN_a_RoW's Avatar
 
Join Date: Aug 2002
Location: Now Residing in Brisbane
Age: 31
Posts: 2,494
did it use much oil? seems odd that the honing pattern is still there, the ring must've been very tight on the piston which would destroy compression and oil control.
__________________
Lets go find that Hotdog tree I planted

Lowered EF Futura
Black Steelies ( too cheap to buy proper mags )
SiX_iN_a_RoW is offline   Reply With Quote
Old 01-09-2003, 02:39   #9 (permalink)
Formerly EAII_Fairmont
 
AUII_Forte's Avatar
 
Join Date: Aug 2002
Location: Dubbo NSW
Age: 29
Posts: 917
Compression in cyl 6 was down to 80psi (standard 145psi), which is the one with the honing pattern. Oil consumption was fine really, I think it leaked more than in used!
__________________
1992 AXII Telstar TX5 Ghia

121kW 2.5L DOHC V6 in a car that weighs 1100kg's and looks like a 4 banger from the outside......SLEEPER!

1988 EA S Pak 3spd CFI.....Soon to be a 250rwkw HSV eating machine.
Latest update......MPFI!!
AUII_Forte is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > General Tech



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Magna V8 ambush plot FPRXR-6 Ford Racing Across the Globe 59 01-06-2004 17:34
has david flint lost the plot? laminge The Pub 20 10-11-2003 20:25
temp gauge display lost the plot ! The Fonz General Tech 26 09-23-2002 10:16
EL Auto doing strange things Rodo General Tech 7 07-07-2002 23:09
Now I Know We've Lost the Plot russellw The Pub 1 04-22-2002 22:20

Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 03:09.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.