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Author Topic:   Leaking core plugs
Clevo377
Gearhead

Posts: 255
From: Blackburn, Victoria, Australia
Registered: Nov 2000

posted 01-11-2002 08:51 PM     Click Here to See the Profile for Clevo377   Click Here to Email Clevo377     Edit/Delete Message   Reply w/Quote
One of my heads has two of the screw in core plugs leaking. What is the best way to seal them up? (without taking the head off if possible).

Thanks
Paul

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Dr. Who
Gearhead

Posts: 164
From: Redwood City, Ca.
Registered: Sep 2001

posted 01-11-2002 11:19 PM     Click Here to See the Profile for Dr. Who   Click Here to Email Dr. Who     Edit/Delete Message   Reply w/Quote
Many of the sealers like Alumaseal will stick the thermostat but I've had great success with GM seal tabs stopping leaks and not causing other problems, they come on a card and there's about 4 or 6 in the pack. 2 of em do the job long term most times.

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Moe! Larry! Cheese! Curly Howard

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Clevo377
Gearhead

Posts: 255
From: Blackburn, Victoria, Australia
Registered: Nov 2000

posted 01-14-2002 06:04 AM     Click Here to See the Profile for Clevo377   Click Here to Email Clevo377     Edit/Delete Message   Reply w/Quote
Spoke to the guys at the head reco shop. They said to use some Loctite 290. It Penetrates threads by capillary action (wicks).

I'll give it a go. (you can also use it on carb adjusting screws)

Paul

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Moneymaker
Administrator

Posts: 11493
From: Lyons, IL, USA
Registered: May 99

posted 01-15-2002 12:43 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
On the plugs themselves, nothing beats teflon tape. NOTHING!
If you need to introduce an agent into the cooling system to stop the leak, the best product I have ever seen is KW Copper Coat Block Seal.

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Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
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cracing
Journeyman

Posts: 8
From: Saltillo Miss. USA
Registered: Jan 2002

posted 01-15-2002 01:45 PM     Click Here to See the Profile for cracing   Click Here to Email cracing     Edit/Delete Message   Reply w/Quote
Do not use K&W with antifreeze, it will clog everything. I didnt read the instructions ONCE. That is the block sealer not the rad sealer.

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