Never seen this before....anybody else?

[TroyCo]

So I'm tearing down an RV 440, 1973 block, 213 heads. I noticed the intake springs are single spring units, but the exhausts are dual springs. Any ideas as to why this was done? Was this a normal thing Chrysler did? I've never seen this before.

 

[oldkimmer]

We can’t see it either. Kim

 

[TroyCo]

I thought my description was apt enough, but here you go.

 

[CBODY67]

Typically, if ONE set of springs has the inner dampers, they BOTH have them. No way to tell if the heads have been apart at some point in prior time? Did it have dampers as it was a 4bbl motor, rather than an MHC 440?

Just some thoughts,
CBODY67

 

[TroyCo]

It doesn't appear to have been apart at all. Head gaskets appear to be the original units. Cylinders still have crosshatch even. The valve cover gaskets weren't cork gaskets. Not sure if that is an indicator of anything or not.

 

[hemi71x]

Someones been into those heads previous to you, for whatever reason(s)
You don't have to remove heads to replace valve springs, or valve stem oil seals.
Your engine can't talk, so no way of knowing what's been done, in the past 48+ years.

 

[volksworld]

the exhaust retainer looks really thick...possibly set up with rotators on exhaust valve to try to prevent them from burning in a motorhome application

 

['69FuryIIIConvertible]

I've seen it on truck 318's, truck 360's and truck 440's, I'm not sure what the logic was, but in HD application's, it seems to be what was done.

 

[commando1]

I took a set of heads off of an RV 440.
I too saw the springs and said WTF?

 

[TroyCo]

WTF indeed

 

[oldkimmer]

Yes it’s exhaust rotators. U can change out the spring and rotators to the intake style. Kim

 

[MONC440]

I've seen this on RV 440's also. I was told some RV 440's had sodium filled exhaust valves to help control the heat and they needed the extra spring because the weight of the valve. Don't know but I always replaced the valves with stainless ones.