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Author Topic:   Head bolt sealant

Posts: 173
From: Macon,Georgia, U.S.A.
Registered: Mar 2002

posted 04-15-2003 06:17 PM     Click Here to See the Profile for MAV   Click Here to Email MAV     Edit/Delete Message   Reply w/Quote
What do you guys like to use on head Bolts that go into water jackets?


[This message has been edited by MAV (edited 04-15-2003).]

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V8 Thumper

Posts: 4044
From: Orange, Ca. United States of America
Registered: Dec 2001

posted 04-15-2003 07:12 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
RTV silicone, nothing special

1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle

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Posts: 21725
From: Lyons, IL, USA
Registered: May 99

posted 04-16-2003 10:46 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Or anti seize.

Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
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NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
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Posts: 1805
From: Spencer, WV
Registered: Jan 2001

posted 04-16-2003 11:19 AM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
Just make sure to run a tap through the bolt holes and clean them out really well with brake cleaner (or some similar degreaser) before blowing the holes out with air.

My personal preference is Permatex Hylomar, but the other stuff works just fine.

Good Luck!

Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3

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Posts: 1254
From: Lyons, ILL, USA
Registered: May 99

posted 04-17-2003 08:19 PM     Click Here to See the Profile for Capri   Click Here to Email Capri     Edit/Delete Message   Reply w/Quote
Yes Mike, But there is a slight problem with running a tap through the bolt holes. It would depend on if the motor is on the engine stand or in the car. You can zip the tap through the bolt holes and clean them out on the stand BEFORE the block goes to the machine shop. This way when its tanked after machining, it can clean out any or all of the misc particles that could be floating around. Any loose jive getting in the cooling system could cause problems depending on the size. For instance, seizing up a water pump bearing. I have seen this happen at the dealership on a Focus of all things.

If you have pulled the heads to change gaskets, and the block is in the car, you would want to get as much coolant out as you can by spinning the water pump, and using a jack to get the back of the car way high so it pours out the front. Once the level is down, use some paper towel to soak up most of what is left over in each bolt hole. After that, then use fresh paper towel with brakekleen to clean and dry out the hole. If you do use some compressed air, be careful of flying stuff. If you ever have a reason to have your stuff apart as much as we do, then use anti-seize on the head bolt washer and silicone on the bolt thread.

Either way you go, pay careful attention to dropping extra particles into the coolant passages.

Tony Denysenko
O-P/SA 5302 IHRA Stock Eliminator
H-I/FA 3302 NHRA Stock Eliminator
MoneyMaker Racing

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Posts: 617
From: Port Alberni, B.C. , Canada
Registered: Mar 2001

posted 04-18-2003 12:53 AM     Click Here to See the Profile for bfxcomet   Click Here to Email bfxcomet     Edit/Delete Message   Reply w/Quote
A wet/dry shop vac works good for sucking the holes clean. If you use anti-seize, I would recomend using nickel instead of copper anti-seize.

65 comet project
84 T-bird 302/C4 14sec street/strip
Made in CANADA built for speed

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Posts: 56
Registered: Oct 2001

posted 04-18-2003 07:47 PM     Click Here to See the Profile for timjk   Click Here to Email timjk     Edit/Delete Message   Reply w/Quote
I find that Ultrablack RTV works great. I see alot of people using teflon thread sealant, but I believe this is really made to use on pipe threads only.


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