Sealing New Head Gasket
#1
Posted 28 July 2020 - 07:08 PM
#2
Posted 28 July 2020 - 07:20 PM
The accepted method is to torque the head down with the new gasket, fill with coolant, start the engine and run it through two complete heat & cool cycles.
Then re-torque by backing off each head nut in turn, in the correct order, and re-torque to the stated figure. Re-set the valve clearances, top-up with coolant and run normally.
Others may do it differently, but it has worked for me since 1961.
#3
Posted 28 July 2020 - 07:22 PM
Hope this helps
Cal
#4
Posted 28 July 2020 - 07:55 PM
I recently watched a utube video where a new engine start was being filmed. The guys ran the engine without coolant fo about twenty seconds to ‘seal ‘ the gasket. Engine was left to cool for a while before coolant was added to continue to run. Is this a normal practice as I haven’t heard of this before.Im building a new 998 engine so I would like your opinions of the best method. Many thanks.
Thats the bedding in process for the BK450 gasket.
#5
Posted 28 July 2020 - 08:46 PM
It depends on the Gasket and what the manufacturer of the Gasket recommends.
Some say Dry, some say fill with clean water (no coolant) for a few heat cycles.
Here's ACL's advice;-
(Q14 down towards the bottom of the first sheet here)
#6
Posted 30 July 2020 - 09:58 AM
I recently watched a utube video where a new engine start was being filmed. The guys ran the engine without coolant fo about twenty seconds to ‘seal ‘ the gasket. Engine was left to cool for a while before coolant was added to continue to run. Is this a normal practice as I haven’t heard of this before.Im building a new 998 engine so I would like your opinions of the best method. Many thanks.
I was taught this method years ago, but I think it only works on copper gaskets? I've done this a few times and never had a problem.....
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users