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#1
11-19-2018, 09:24 AM
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Install head gaskets dry?
Installing a set of 1016 gaskets between fresh decked block and surfaced 670 heads. ARP head bolts. Do you guys install the 1016s dry?
The bolt that runs thru the center exhaust port showed signs of having coolant get to the threads on both sides. The bolt threads were eaten up at the deck and the gaskets were brown around the hole. I'm waiting on replacement bolts now. Anything I can do to prevent that?
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I could explain all this to the girl at the parts store, but she'd probably call the asylum. White '67 LeMans 407/TH350/Ford 3.89... RIP Red '67 LeMans. 407/TH400/Ford 3.25 Last edited by chiphead; 11-19-2018 at 09:37 AM. |
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#2
11-19-2018, 09:53 AM
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If they are new out of the package then yes the get installed dry.
When I have re-used mine I have spread a very thin film of gasket maker around the water passages.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#3
11-19-2018, 12:19 PM
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Sealant needs to be used on the bolt threads.
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#4
11-19-2018, 01:08 PM
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Not on a factory block as the head bolt holes in Pontiacs unlike Chevys and some others are blind!
In fáct if I am not mistaken even the IA block only has one head bolt hole out of the ten that are not blind.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! Last edited by steve25; 11-19-2018 at 01:17 PM. |
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#5
11-19-2018, 02:17 PM
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I know, but that's not how I'm interpreting his description.
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#6
11-19-2018, 02:31 PM
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It appears that the coolant holes in the deck, adjacent to that center head bolt, had coolant seep over to the head bolt. The hot coolant ate the head bolt. Beyond gasket retorque or using a different gasket, I'm not sure what to do about it.
__________________
I could explain all this to the girl at the parts store, but she'd probably call the asylum. White '67 LeMans 407/TH350/Ford 3.89... RIP Red '67 LeMans. 407/TH400/Ford 3.25 |
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#7
11-19-2018, 02:40 PM
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I would retorque that bolt till it stops moving. Might take a few times.
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#8
11-19-2018, 03:23 PM
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The proper mix of coolant should not have caused the eating up of a steel head bolt any more then it does the cast iron of the block which is like nill , but what needs to be done in the least is to drill the extra cooling hoes in the center of the deck like you find in the head gasket to combat the added heat in that area from the side to side Exh ports, then use a film of gasket maker to stop that weeping you have going on around those coolant holes.
You can also with some work use/ make a longer head bolt for that hole that accesses more of the bolt hole threads is need be .
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#9
11-19-2018, 04:47 PM
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Quote:
And always run through the final torque sequence 2~3 times. For my own stuff...I add 5 lbs and hit them again just to be sure they don't move. Clay
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All the federales say,they could've had him any day They only let him slip away, out of kindness...I suppose Poncho & Lefty |
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#10
11-19-2018, 06:18 PM
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as mentioned - a freshly machined deck and head should eliminate the problem, which was almost certainly that the gasket was leaking and allowing coolant from the nearest coolant passage into the head bolt hole.
Factory decks and heads were often not very flat. No factory deck I've seen has been square to the crank centerline either. i always use a thread chaser to clean up the head bolt holes, use a little 30 weight oil on the threads and under the bolt heads when installing them and always torque twice. Never a problem and never have used any sealer or dressing on a head gasket.
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---------------------------- '72 Formula 400 Lucerne Blue, Blue Deluxe interior - My first car! '73 Firebird 350/4-speed Black on Black, mix & match. |
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