What are they worth?
05-29-2014 | 08:59 PM
#25
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From: Peoria, IL
edit: Once the buyer hears and drives, I doubt the liability issue is even thought of.
Last edited by FormulaF272SR1; 05-29-2014 at 09:03 PM.
05-30-2014 | 05:19 AM
#28
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From: Peoria, IL
05-30-2014 | 06:40 PM
#29
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From: tn
Here's the deal on "unknown headers".
Marine Headers are fully water jacketed (tube in a tube). Any sort of pinhole leak can result in water in your cylinder(s). Water in your cylinders will rust your cylinders, or can cause issues much more serious including hydro-lock (bent rods, crushed bearing shells, etc). Rusty cylinders won't TELL you they are rusty until you lose your ring seal. A crushed bearing shell will result in a damaged crank and possibly a thrown (broken) rod and block.
Nobody with much sense will WANT to pay extra for a set of "no name" wet marine headers. You might find a zombie who likes the way they look and thinks they are a good buy, but generally speaking you need to be able to tell a guy WHO made them and then it's up to the reputation of the builder. And, here's the kicker - even the high dollar BRAND NAME marine headers suffer from some of these issues on occasion - and the ones who survive to sell more headers are the ones who TAKE CARE of their customers and provide above average service.
So, back to square one - a nice NEVER OPENED, NEVER "REBUILT" low hour black Merc 330 with ALL STOCK parts is worth a certain amount. A 330 that has had "several doo dads and has been rebuilt by the guy who builds all the race car motors around here" is worth MUCH LESS unless you have the pedigree for the builder, the build sheet for the motor, and a dyno sheet and the ability to start and run the motor for a buyer.
There are no "desirable upgrade" parts in a 330. It is the lowest common denominator of 454s. Great long-living motor. But nothing special.
As has been said, for a little more money you can find a used Mag (steel crank, forged rods with large bolts, forged pistons, rectangle port heads, hi rise intake).
So, they are worth whatever you get somebody to pay.
I assume you are looking to drop something "else" into your boat? Do tell..
Marine Headers are fully water jacketed (tube in a tube). Any sort of pinhole leak can result in water in your cylinder(s). Water in your cylinders will rust your cylinders, or can cause issues much more serious including hydro-lock (bent rods, crushed bearing shells, etc). Rusty cylinders won't TELL you they are rusty until you lose your ring seal. A crushed bearing shell will result in a damaged crank and possibly a thrown (broken) rod and block.
Nobody with much sense will WANT to pay extra for a set of "no name" wet marine headers. You might find a zombie who likes the way they look and thinks they are a good buy, but generally speaking you need to be able to tell a guy WHO made them and then it's up to the reputation of the builder. And, here's the kicker - even the high dollar BRAND NAME marine headers suffer from some of these issues on occasion - and the ones who survive to sell more headers are the ones who TAKE CARE of their customers and provide above average service.
So, back to square one - a nice NEVER OPENED, NEVER "REBUILT" low hour black Merc 330 with ALL STOCK parts is worth a certain amount. A 330 that has had "several doo dads and has been rebuilt by the guy who builds all the race car motors around here" is worth MUCH LESS unless you have the pedigree for the builder, the build sheet for the motor, and a dyno sheet and the ability to start and run the motor for a buyer.
There are no "desirable upgrade" parts in a 330. It is the lowest common denominator of 454s. Great long-living motor. But nothing special.
As has been said, for a little more money you can find a used Mag (steel crank, forged rods with large bolts, forged pistons, rectangle port heads, hi rise intake).
So, they are worth whatever you get somebody to pay.
I assume you are looking to drop something "else" into your boat? Do tell..
06-03-2014 | 02:34 PM
#30
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Registered
Joined: Dec 2012
Posts: 32
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From: Peoria, IL
Here's the deal on "unknown headers".
Marine Headers are fully water jacketed (tube in a tube). Any sort of pinhole leak can result in water in your cylinder(s). Water in your cylinders will rust your cylinders, or can cause issues much more serious including hydro-lock (bent rods, crushed bearing shells, etc). Rusty cylinders won't TELL you they are rusty until you lose your ring seal. A crushed bearing shell will result in a damaged crank and possibly a thrown (broken) rod and block.
Nobody with much sense will WANT to pay extra for a set of "no name" wet marine headers. You might find a zombie who likes the way they look and thinks they are a good buy, but generally speaking you need to be able to tell a guy WHO made them and then it's up to the reputation of the builder. And, here's the kicker - even the high dollar BRAND NAME marine headers suffer from some of these issues on occasion - and the ones who survive to sell more headers are the ones who TAKE CARE of their customers and provide above average service.
So, back to square one - a nice NEVER OPENED, NEVER "REBUILT" low hour black Merc 330 with ALL STOCK parts is worth a certain amount. A 330 that has had "several doo dads and has been rebuilt by the guy who builds all the race car motors around here" is worth MUCH LESS unless you have the pedigree for the builder, the build sheet for the motor, and a dyno sheet and the ability to start and run the motor for a buyer.
There are no "desirable upgrade" parts in a 330. It is the lowest common denominator of 454s. Great long-living motor. But nothing special.
As has been said, for a little more money you can find a used Mag (steel crank, forged rods with large bolts, forged pistons, rectangle port heads, hi rise intake).
So, they are worth whatever you get somebody to pay.
I assume you are looking to drop something "else" into your boat? Do tell..
Marine Headers are fully water jacketed (tube in a tube). Any sort of pinhole leak can result in water in your cylinder(s). Water in your cylinders will rust your cylinders, or can cause issues much more serious including hydro-lock (bent rods, crushed bearing shells, etc). Rusty cylinders won't TELL you they are rusty until you lose your ring seal. A crushed bearing shell will result in a damaged crank and possibly a thrown (broken) rod and block.
Nobody with much sense will WANT to pay extra for a set of "no name" wet marine headers. You might find a zombie who likes the way they look and thinks they are a good buy, but generally speaking you need to be able to tell a guy WHO made them and then it's up to the reputation of the builder. And, here's the kicker - even the high dollar BRAND NAME marine headers suffer from some of these issues on occasion - and the ones who survive to sell more headers are the ones who TAKE CARE of their customers and provide above average service.
So, back to square one - a nice NEVER OPENED, NEVER "REBUILT" low hour black Merc 330 with ALL STOCK parts is worth a certain amount. A 330 that has had "several doo dads and has been rebuilt by the guy who builds all the race car motors around here" is worth MUCH LESS unless you have the pedigree for the builder, the build sheet for the motor, and a dyno sheet and the ability to start and run the motor for a buyer.
There are no "desirable upgrade" parts in a 330. It is the lowest common denominator of 454s. Great long-living motor. But nothing special.
As has been said, for a little more money you can find a used Mag (steel crank, forged rods with large bolts, forged pistons, rectangle port heads, hi rise intake).
So, they are worth whatever you get somebody to pay.
I assume you are looking to drop something "else" into your boat? Do tell..
Thanks for the info. I had just planned to swap in some LS engines. I like the Hardin sea pump option to make things easy there. I am talking to a guy right now and he is between 2000-2500 per without the headers. I see what you mean about the pin hole issues, never realized that was an issue but then I am newer to boating so its good to learn about these things.
