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  sealing header flanges w/ high temp silicone

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Author Topic:   sealing header flanges w/ high temp silicone
MDF99
Gearhead

Posts: 234
From: Hamilton, Ohio, USA
Registered: May 2001

posted 07-03-2002 01:13 PM     Click Here to See the Profile for MDF99   Click Here to Email MDF99     Edit/Delete Message   Reply w/Quote
Specifically, which silicone product is best for holding up to the heat and making a good seal?

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S/Q 2204
Gearhead

Posts: 103
From: Ozark, AL(again after a year of being deployed)
Registered: Feb 2001

posted 07-03-2002 01:20 PM     Click Here to See the Profile for S/Q 2204   Click Here to Email S/Q 2204     Edit/Delete Message   Reply w/Quote
Hello,
I use either the red or gold High Temp (Permatex for me). Like Alex pointed out works best on flat (no ground down weld bead) surfaces.
Mark Johnson

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Moneymaker
Administrator

Posts: 27499
From: Lyons, IL, USA
Registered: May 99

posted 07-03-2002 01:35 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
We use those that Mark mentioned and the orange (I love oranges you know)high heat Permatex products exclusivly. Never ever had a header leak using the high heat silicone with flat flanges.

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Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator

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
Professional Manwhore
The Barry of BarrysGrrl

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MDF99
Gearhead

Posts: 234
From: Hamilton, Ohio, USA
Registered: May 2001

posted 07-03-2002 03:35 PM     Click Here to See the Profile for MDF99   Click Here to Email MDF99     Edit/Delete Message   Reply w/Quote
I'm familiar with the red and gold (ultra copper?) high temp stuff. Where do you get the high-temp tropical orange product?

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stang106
Gearhead

Posts: 786
From: God's Country!... Port Alberni B.C. Canada
Registered: Jul 2001

posted 07-03-2002 08:22 PM     Click Here to See the Profile for stang106   Click Here to Email stang106     Edit/Delete Message   Reply w/Quote
What's the heat range on the orange high temp silicone? can I use it on my exhaust manifolds to heads without gaskets?
Dave

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Moneymaker
Administrator

Posts: 27499
From: Lyons, IL, USA
Registered: May 99

posted 07-03-2002 10:15 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
It is rated at 1500+ degrees. Works especially well holding stuff in tail pipes.

------------------
Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator

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
Professional Manwhore
The Barry of BarrysGrrl

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