Re: IML: '67 440cid freeze plugs

[sosmi@xxxxxxxxxxx]

Dan, the book says the heads are 1-1/4" Dorman # 565024, and the block is #565068 these are brass plugs. As far as using the rubber expandable plugs, be sure to clean the bore and install the plug dry, don't use sealers, sealers could cause the plug to " SQUIRT" out under pressure. The exhaust manifold gaskets, should be metal re-enforced, since the factory uses no gasket, it's important to transfer heat from the manifold to the cylinder head to prevent manifold overheating.The only sealer I use  for this is Permatex Hi-Tack, it will not impead heat transfer. Be careful to not over torque the bolts, you can crack the manifold.Ya'll have a nice day, Dave.

 

> -------------- Original message -------------- 
> From: therichardsonfamily@xxxxxxxxxxx 
>
> > Hi everyone: 
> > 
> > Can anyone confirm the diameter of the freeze plug in the head on my '67 
> > Imperial 440cid? The local auto parts store shows 1&1/2". 
> > 
> > Also, any issues with using the rubber type of plug in the head? I'm trying to 
> > do this with the engine in the car, I think the rubber kind will be easier. The 
> > bad plug is on the passenger side between the back 2 exhaust ports, behind the 
> > exhaust manifold. Is the rubber plug OK next to all that heat? It is a 
> > somewhat temporary fix, and I'm prepared to do it again, if needed. I just want 
> > to get her running again. 
> > 
> > When I pull the exhaust manifold, I'll need a new gasket. Any special choices 
> > on the type? Do I use a high heat gasket sealer 
> on it? 
> > 
> > Thanks for any tips offered. 
> > 
> > Dan Richardson 
> > '67 Imperial (engine in my '65 300L Family Heirloom) 
> > 
> > 
> > 
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