[Supras] Sealant for head gasket?

[b2nice84 at aol.com]

Like all have said about the headgasket.? Do as instructed.



For the head bolts,? I was worried about the same thing.? The bolts pulling out the threads on the block.? Many have done the torque over spec thing and I?included (Using ARP head studs).? The block is cast iron opposed to aluminum like Civics.? Many have done it and it is holding together.? So don't worry too much, just go slow when?you torque?it down and if it doesn't feel right then stop.

Hope this helps at least a little. 
Brandon


-----Original Message-----
From: Bill <bwright1818 at comcast.net>
To: supras at supras.com
Sent: Fri, 2 Nov 2007 2:43 pm
Subject: [Supras] Sealant for head gasket?




Hey guys,

Well, the Supra rookie (trying for Rookie of the Year, though...) has his 
Cometic 2mm head gasket in hand. They recommend a dry installation. To me, this 
seems like begging for a leak, especially with the different rates of thermal 
expansion going on.  Any thoughts? Also, I know everyone is torquing them higher 
than spec. I'm okay with that, to a point; however, when I look at the thread 
pitch on the head bolts, as opposed to, say, a 350 Chevy head bolt, I have to 
wonder if the spec is not, at least CLOSE, to okay. Seems like winding up to 
75-85 foot pounds on that fine a thread would over-stress the bolt, threads or 
head, as it would be creating a lot more vertical force than on a similarly 
torqued American head bolt with more coarse threads. After all, bolts are just 
circular wedges. I know there are engineer types out there. Whadda ya think, 
over? Thanks...

Bill 90 N/A

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