Wow, this is getting interesting, lol. I now have a half dozen emails of
some sort or another that indicate I must possibly have been doing
something stupidly wrong! From surface finishes, to torque, to thread
lube, to phase of the moon I guess. By the way folks, I didn't ask for
help here, I just made two comments on what my experiences with Cometic
MLS gaskets and SCE ICS Titan head gaskets have been. I am happy with
my setup. YMMV! Go pick on some one else please! And I am trying to
understand the old technology vs new technology gimmick. If it works, it
works, lol. Age of the idea or technique, if it works, doesn't matter!
Rick, yes, I use ARP thread lubricant on everything in the motor: head
studs, main bearings, rods. I torque in small steps letting the system
rest a bit between each round. I come back later and retorque. When I
am at the final stage of torque I use a very small hammer to ping the
fastner.. Why? Threads have siction (sticky friction) even when lubed up
and small pinging releases the friction. Then I retorque again. I do
this on the final torque until nothing changes and that actually takes a
few rounds or retorque. After a heat cycle I retorque. So what have I
missed? Again, I did no task for help here. I only commented on my
experiences.
So get a life folk!
mayf
Rick Byrnes wrote:
> Mayf
> did you use the ARP lubricant on the threads. There is a significant
> difference in clamp load with other lubes. Fel-Pro and ARP had a
> little battle about this some time ago. Neither really won, but
> highest clamp load without plastic deformation of the stud, and no
> failure of any other component is what we are after. But then you
> know that so I'm just preaching......Ok I'll stop.
>
> The OLD steel shim gaskets that John spoke of is still a good gasket,
> and in principal is at the basis of the MLS gaskets. Precision
> embossing make them even more consistent than in the past. Like you
> John I used lots of them in another life and they worked ok. Our
> acceptance of "leaks" fluid or gaseous has changed over the years and
> the new designs are where it's at.
>
> I still say that most race engine leakage of compression gasses is due
> to detonation or cylinder head lift. If you had it machined to spec,
> I'll bet a six pack of Labatts that you had a brief excursion into
> detonation. Easy to do with race type engine calibrations.
>
> But, if you found what works, use it. Until it doesn't.
>
> Rick
_______________________________________________
Support Team.Net http://www.team.net/donate.html
Land-speed mailing list
http://autox.team.net/mailman/listinfo/land-speed
|