Author Topic: 260-drain Plugs  (Read 1450 times)

340mopar

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  • 1980 SCORPION 260-SL
260-drain Plugs
« on: May 24, 2016, 09:14:45 am »
has anyone got the specs for the twin-350's for type size location and number of drain plugs?

does anyone sell a "kit" that has all you need or is it simply best to order the number you need?

any suggestions on best deals?

I have three of four styles and a couple of sizes in the pile I was left.  all the threads look like they were flattened out...I just don't like they way they look...and I need to get this Beast fired-up!
MYSTERY
1980 SCORPION 260-SL

stinger390x

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Re: 260-drain Plugs
« Reply #1 on: May 26, 2016, 10:02:41 pm »
On my 260 I had one drain plug. It was a square head brass screw-in plug.
They are pretty standard and available at any boating store. The plug takes a square 1/2 inch reversed socket, or an adjustable wrench will work on it as well. Never overtighten them...



Sorry...this is the best picture I have. I wish I had one with more detail...

340mopar

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  • 1980 SCORPION 260-SL
Re: 260-drain Plugs
« Reply #2 on: June 01, 2016, 09:49:57 am »
I sorry... these are the drain plugs used to winterize the engines...not the hull drain plug...
MYSTERY
1980 SCORPION 260-SL

stinger390x

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Re: 260-drain Plugs
« Reply #3 on: June 03, 2016, 10:53:49 pm »
Oh...Ok sorry about the misinterpretation.

Drain plugs are usually at the bottom of the exhaust manifolds and there should be a petcock on the side of the block to drain that.
I usually remove the lower rad hose at the water pump and open the petcocks on the block and manifolds to drain all the water out.
Once that is done, I close the petcocks and replace the lower rad hose. then I take the upper rad hose from the "T" split on the thermostat and fill up the entire engine with coolant (Prestone) until it overflows on the top of the block at the thermostat housing.

I hope that helps?

340mopar

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Re: 260-drain Plugs
« Reply #4 on: June 06, 2016, 09:07:05 am »
do you know how many there are of each?

I need to replace them and need to order/buy enough to replace all of them at one time.
MYSTERY
1980 SCORPION 260-SL

stinger390x

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Re: 260-drain Plugs
« Reply #5 on: June 06, 2016, 09:01:42 pm »
You can get them at any auto parts store. They are standard 1/4 thread or you can get adapters to make them fit.
Any good parts store will have a rack with brass fittings and adapters to choose from.

It's not like it's CC special or anything......

340mopar

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Re: 260-drain Plugs
« Reply #6 on: June 07, 2016, 07:57:10 am »
ok sounds good.

I'm just trying to find out how many total I will need.

MYSTERY
1980 SCORPION 260-SL

stinger390x

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Re: 260-drain Plugs
« Reply #7 on: June 07, 2016, 11:38:25 pm »
Ypu  will need four for the exhaust manifolds(one for each) and two for the blocks if you have the holes near the fuel pump.  If not, just take off the lower rad hose and it should drain the block ok that way.

340mopar

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  • 1980 SCORPION 260-SL
Re: 260-drain Plugs
« Reply #8 on: June 08, 2016, 11:42:06 am »
You are Awesome!!!!
MYSTERY
1980 SCORPION 260-SL