Re: {Chrysler 300} Re: Ram exhaust manifold repair

The pic looks like the same problem I had where the ‘ear’ of the manifold where the bolt hole takes the bolt into the head had cracked and broken off. Think it was the guys who installed the new exhaust system and let the front components of it ‘hang’ on the exhaust manifold- not sure. Trillion does a lot of cast welding so I took it there. Very competent result and reinstalled without further issue. A bit spendy but just try and find these manifolds, in as good condition as the ones on our restored cars, out in the wild. I’d recommend them.

On Oct 29, 2021, at 9:12 PM, 'Keith Langendorfer' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:

The drivers side manifold on my F broke in a similar way ~20+ years ago (the first time I owned it) and I had it welded by a tech at Paul Russel Automotive in Essex, MA (they do all of Ralph Laurens cars). At some point in the last five years (I’m guessing, based on the appearance of the break surfaces) it broke again but in a different spot which may be even harder to weld. In the attached you can see the first weld (that has held) and where it’s broken now at the forward end of the flange “ear”.

I did a temporary accommodation with washers and double gaskets and I’ve yet to remove the manifold as I was waiting for driving season to end (which it has) and will do that this week. A friend here in Maine said he knows of a welder/machinist that has an oven and can superheat the parts so I’ll bring it to him to see if he can do it.

If that’s a no-go, Club member Mark Love said he had a similar problem and has a craftsman welder in Calgary that fixed his.

Keith

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On Oct 29, 2021, at 8:31 PM, John Grady <jkg@xxxxxxxxxxxxxxxxx> wrote:

on ram manifold discussion , good pix by JY , helping me with an F ; this happened before we got the car . See how thin ? heads up !!! do not hang head pipe by flange or try to muscle around for fit while bolted .

Stitch and weld in california can fix but big bucks . They have to heat whole manifold white hot and weld while that hot . They are good !
Forget anyone who says they can weld or braze cast iron , it ALWAYS leaves residual stress on cooling unless whole manifold is nearly as hot as the weld .

I know — “ I know a guy “ etc always follows, but it always has that tensile stress from cooling around the weld , whether it breaks again is a crap shoot , although gas or oven braze preheat may help your
luck , as braze is a lower temp right at fusion place .. Braze won’t break but cast iron next to it can crack ..

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