This will take you to the main site where there is history, technical information and other information on these cars.
This takes you back to the main page of the forums.
This is the control panel to change your password, information and preferences on this message board.
Click here if your lost your password or need to register on this message board. You must be a registered user to post. Registration is free.
Search this board for information you need.
Click here to buy cool Squarebirds mechandise.
Click here to support For $20 annually receive 20mBytes webspace, a Squarebirds e-mail address and member's icon on the message board.
Old Yesterday, 12:42 PM
Frango100's Avatar
Frango100 Frango100 is offline
Join Date: May 2 2016
Posts: 370
Frango100 is on a distinguished road
Default Unpleasant surprise

When i took the starter motor out for rebuild, i had seen some strange looking surface on the engine block behind the starter motor. There was a bit of coolant leak from there, which i thought was the freeze plug. Yesterday i discovered that the strange looking surface was a kind of repair of the engine block with some epoxy stuff. I took that stuff of and didn´t see any crack, but they had cut a shallow groove in the block where after a while, the area is becoming slightly damp. So there must be some kind of crack in there. Looked for a good repair method for this, which doesn´t seem to be that easy.
Do you guys have any good experiences with stop leak stuff? I red about clogging heater core (which is bypassed on my bird), but what about clogging the radiator? (which is new)
1958 T-Bird "Trovão Rosa" - "Rose Thunder"
Thunderbird registry #61670
Reply With Quote
Old Yesterday, 01:20 PM
jopizz's Avatar
jopizz jopizz is offline
Excellent Auto Mechanic for over 40 years.
Join Date: Nov 23 2009
Posts: 4,845
jopizz is on a distinguished road

I've used various stop-leak products in the past to seal pin holes in the radiator with minimal success. As you mentioned they can cause blockages in your radiator. I don't know of any product you can add to the coolant that will seal a crack in the block. Sealing cast iron is much different than sealing thin copper or aluminum. Even if you could get good access, welding cast iron is tricky. You may be better off just trying to reseal it with a good waterproof epoxy and hope for the best. I've used J-B Weld for a number of different projects and it works very well. I would recommend draining the coolant from the block so the crack is completely dry. If you were here in the states it would be easy to find another FE block but I'm sure they are at a premium where you are.

John Pizzi - Squarebirds Administrator
1959 Convertible

Thunderbird Registry #36223 856-779-9695
Reply With Quote
Old Yesterday, 03:24 PM
OX1 OX1 is offline
Join Date: Feb 10 2016
Posts: 255
OX1 is on a distinguished road

This stuff welded a lower bellhousing "ear" (half of it anyway)
on a later model 302 block. I busted the outer edge
of it off, mounting block to engine stand with an off center
"tube" from stand, using an air gun.

Anyway, welded cast as easy as I usually weld mild steel.
Usually cast iron needs to be stick welded, but I'm
much better with a MIG. Not cheap, but neither is a
new engine.
Reply With Quote
Old Yesterday, 05:45 PM
sidewalkman's Avatar
sidewalkman sidewalkman is offline
Join Date: Sep 14 2015
Posts: 303
sidewalkman is on a distinguished road

Use a 2 part epoxy, never EVER use a stop leak product in your coolant. It does not discriminate between water journals in the radiator or a leak and plugs them all. I can't tell you how many people I know including myself that have seized a motor through overheating after using that crap. I don't understand how they can still sell it.
South Delta, BC, Canada
1960 White T-Bird, PS, PB that's it
Red Leather Interior!
Thunderbird Registry #61266
Reply With Quote

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -4. The time now is 01:57 AM.

Driving, racing or working on cars can be hazardous. The procedures and advice on this website including the message board are opinion only. and its webmasters and contributors do not guarantee the correctness of the advice and procedures. The and its webmasters assume no liability for any damage, fines, punishment, injury or death resulting from following these procedures or advice. If you do not have the skills or tools to repair your car, please consult a professional. By using this site you agree to hold harmless the, its authors and its webmasters from any resulting claim and costs that may occur from using the information found on this site.

Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Any submissions to this site and any post on this site becomes property of . The webmasters reserve the right to edit and modify any submissions to this site. All material on this is site is copyrighted by the Reproduction by any means other than for personal use is strictly prohibited. Permission to use material on this site can be obtained by contacting the webmasters. Copyright 2002-2016 by