3.0l Volvo Frost Plugs Brass Vs. Steel ??

[02 LARSON]

I have an 02' Larson with a 3.0L Volvo and one of the frost plugs on the exhaust manifold has rusted a hole in it. My mechanic has said that all the plugs should be brass and all mine are steel. He said that he does not think this is the original motor. I am not the original owner, but to my knowledge, there has been no problems with the boat before. I bought it from a dealer and they told me it was a demo from a water ski show and only had 7 hours on it. Did volvo penta motors have steel plugs or is my mechanic right?

Any replies would be great, Thanks for your help.

 

[firehog6305]

Re: 3.0l Volvo Frost Plugs Brass Vs. Steel ??

I am not sure if volvo ever used steel freeze plugs, but I really dont think they ever did, except maybe in their cars you should have brass, your mech friend is right

 

[Bondo]

Re: 3.0l Volvo Frost Plugs Brass Vs. Steel ??

Ayuh,......

I don't know Why,.....
But,.....
All I've ever seen in Exhaust Manifolds is Steel Core Plugs......

Engine blocks use Brass Core Plugs.....
With the exception of the Cam plug......

 

[Limited-Time]

Re: 3.0l Volvo Frost Plugs Brass Vs. Steel ??

Ayuh,......

I don't know Why,.....
But,.....
All I've ever seen in Exhaust Manifolds is Steel Core Plugs......

Engine blocks use Brass Core Plugs.....
With the exception of the Cam plug......

Could it be a heat thing??

 

[Robj]

Re: 3.0l Volvo Frost Plugs Brass Vs. Steel ??

My manifold has steel plugs.

Have a great day,

Rob.

 

[firehog6305]

Re: 3.0l Volvo Frost Plugs Brass Vs. Steel ??

oop's my fault for read question to fast, didnt see the *manifold Plug*:redface: just saw the freeze plug post

 

[02 LARSON]

Re: 3.0l Volvo Frost Plugs Brass Vs. Steel ??

Thanks to all for the info.