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Author
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Topic: Do I need sealer around the lower head bolts-5.0 block?
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rustang@home
Gearhead Posts: 152
From: Clarion, PA
Registered: Jan 2004
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posted 08-09-2004 09:12 PM
 
I've been itchin to get the heads bolted on tonight, and noticed the lower head bolt holes in these new 5.0 blocks are open to the water jacket. Can I get away without sealer? I'm using ARP bolts and they recommend their sealer. I hate to wait another couple days to get these heads screwed down, but if it's too risky I'll have to wait
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BLstangin
Gearhead Posts: 856
From: St. James, MN
Registered: Apr 2002
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posted 08-09-2004 11:50 PM
Yep, you need to use sealer. I think that you can just use some rtv if you want to. ------------------
1970 coupe restored with the help of my dad. 306 with 600 holley, Weiand Stealth intake, headers, mme custom roller cam, harland sharp roller rockers, kb pistons, 10.3:1 compression ratio, pertonix ignitor 2 with matched coil, lakewood bellhousing, 4-speed toploader, and 2.79 open 8" rear. Soon to be 9" 3.50 trac-lok
1986 f-150, 5.0, factory towing package with original c-6 trans
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Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
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posted 08-10-2004 09:18 AM
Always on ANY SBF.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,& '04
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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ukracer
Gearhead Posts: 192
From: South Wales UK
Registered: Apr 2003
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posted 08-10-2004 11:19 AM
I have never used any sealer on head bolts on ANY Fords I have built, 289,302,351W and C, 428 and 460. No leaks ever, road use, drag race, sprinting and road racing. How come no leaks? Only ever used sealer on brand C engines. Curious
Cheers, Martin.
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n2oMike
Gearhead Posts: 3058
From: Spencer, WV
Registered: Jan 2001
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posted 08-10-2004 12:30 PM
quote:
Originally posted by Moneymaker:
Always on ANY SBF.
Earlier 289/302 blocks have blind holes. The headbolts do not touch water. Only the 5.0's are tapped into the water jacket. Why would you need sealer on a 289 or early 302 block? For bolts, I just use whatever lube the manufacturer recommends. 
------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220
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Rustang
Gearhead Posts: 880
From: Clarion PA
Registered: Nov 2000
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posted 08-10-2004 03:13 PM
Well, good, bad or indifferent, I torqued 'em down last night with a concoction I came up with. I have an ARP catalog and the stuff they recommend for bolts going thru water jackets is a teflon-based sealer they use. I have some teflon based pipe dope laying around that had about the same description as the ARP stuff, so I used it mixed with a little bit of the moly lube  . I'll find out this weekend if it worked when we crank 'er over  ------------------
'68 mustang 351 clevor- 10.92@124
'67 Stang, 351W -11.18@118
'69 351C Torino-14.90@100
'78 Pickup 351W-15.56@88
'79 Pickup 460 ET=??
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Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
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posted 08-10-2004 08:53 PM
MOST 289-351 FoMoCo lower (short) head bolts go into the water jacket Mike.
Not just late 302's.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,& '04
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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