390 Rear Main Leak..help! - 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 > Engine Specific Tech > FE (330-428) Tech
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

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 04-18-2004, 07:09   #1 (permalink)
Registered User
 
Join Date: Apr 2004
Posts: 1
390 Rear Main Leak..help!

My father has a very nice 1973 F 350 Camper Special that we put a 390 in out of my old 67 T-bird. When we tore it down to rebuild it before putting it in we discovered it was not the run of the mill 390 but most likely something similar to the PI 390. (police interceptor) We bored it 30 over, flatop pistons, cam, turned the crank, and new carb. The problem we have is a rear main seal oil leak. We have tried the lip type seal and the wiper type seal and have no luck in stopping this thing from leaking. Everything is put together correctly, my father being a master mechanic for a ford dealer for 30 years. He is stumped as to why it leaks. My brother has spoken with someone at catapiller and they told him the block is worn oun out at the rear main. I have never heard of such a thing and my dad is not buying it either. What is happening at the rear main that would cause it to wear out? This engine has never been hurt or run hard or "come apart" for anything to be damaged. Also, it did not leak while it was in my T-Bird. Any ideas on how to resolve this would be greatly appreciated!!
Randy
Hartland, Michigan
BIGINBIGOUT is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 07-31-2004, 01:21   #2 (permalink)
TOPXR
 
Join Date: Jul 2004
Location: adelaide
Posts: 6
Re: 390 Rear Main Leak..help!

how r ya mate. (assuming crank is in top condition)use a neoprene lip seal at rear main seal. ensure the little pin in main cap that held rope style seal in place is removed and seal the little hole left by it. fit neoprene seal with lip facing in to sump and fit it staggered in the block/cap by about 1/4" in direction of engine rotation. lube the seal well or it will burn on fisrt start. apply small ammount of gasket sealer to block/cap mating face and torque to spec. now! fit rubber strip seals between sides of block and cap, first put a dab of rtv sealer on end of strip, measure strips and block depths to ensure strips are in all the way. now fit steel pins between block and strip and trim off any excess rubber. now your rear main wont leak. also, check all the gallery plugs and cam plug in back of block to ensuse no leaks there either. email me for any more info. cheers.
TOPXR is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > FE (330-428) 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
2005 S-type At A Glance RPO83 Ford Worldwide News 0 01-05-2004 17:32
BA rear suspension rubbers TimKarmiste Suspension | Wheels&Tires | Brakes 1 12-14-2003 23:48
Problem with dropping EL tickford rear bumper Big Mick Exterior | Body | Paint 2 11-26-2003 23:01
colors for rear garnish EaFaLcONs Exterior | Body | Paint 4 05-09-2002 18:01
rear ended by SS GTP07S The Pub 5 01-20-2002 22:51

Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 20:45.



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.