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New long block or Rebuild

"Re; "the pulleys are all

"Re; "the pulleys are all pitted"

Depending on how pitted, I've seen that result in chewing up the belts , and leaving rubber dust all over the bottom of the hull, stringers, and front of the engine.
You'll know if you have to readjust the tension because the belts are being eaten away.

If your concerned about yours, you're probably at the "time for replacements".

Fred 156-M"
 
"Today i started on the exhaus

"Today i started on the exhaust manifolds, cleaned them up real good, removed the plugs, question is before replacing what should i use on the threads, plumbing Pipe dope? another problem arised on the block, they must have missed plugging the attached hole on the rebuild im contacting rapidomarine but i dont want to have to ship it back, any suggestions?
334551.jpg
hole in block
 
"No worries Tony, that hole is

"No worries Tony, that hole is for the dipstick tube.

Re: the plugs, are you referring to the exhaust studs that go into the heads or the drain plugs on the manifold itself?

If head studs, put silicone on both studs on the far ends of each head.

If manifold plugs....I don't put anything on mine. However, if you want to use something, make sure it's high-temp.

Hope that helps."
 
"For the 1/4 NPT drain plugs i

"For the 1/4 NPT drain plugs in the motor, risers and manifolds, I use brass hex type (with the same wrench size for consistency) and no sealer. I put them in just tight enough to seal. They do not leak, and brass makes for easy removal(vs. steel).

Jeff"
 
"Jet,
On the orignal motor th

"Jet,
On the orignal motor that hole is sealed with lead of some sort. the dipstick for me is mounted to the oil pan. This hole isnt theraded either. still waiting on rapido to call me back"
 
"Hmmm....I'm not familiar

"Hmmm....I'm not familiar with the dipstick mount on the oil pan. If I were in your shoes, I might consider either plugging the oil pan mount or, if that's too difficult, picking up a salvage pan. I'd rather mess around with plugging an easily-replaceable oil pan vs. a fresh long block. You could pick up a salvage tube and dipstick while you were at it.....assuming that the current one one fit.

The hole in the block shouldn't be threaded. The dipstick tube has a neck (an inch or two in length) that inserts down into the hole."
 
"Jet,
So that now brings in t

"Jet,
So that now brings in to question is the pan that i have the correct pan, i say that because the gasket replacement that comes with the kit has tabs on both ends of the round seals under both ends of teh crank and no hols in the pan for them. Even in teh rebuild book that I think you sugested i get it shoudl some tyoe of holes in teh pan for teh gasket to seat properly"
 
"T - between the plugged hole

"T - between the plugged hole on the block and what you're describing with the pan, I would theorize that, somewhere along the line, someone replaced that oil pan....with who knows what.

To my knowledge, there are only two variations on the 318 marine pans.....one that has the two plug holes (like the gasket you've got) and one that has numerous plug holes (6 maybe?) going all the way accross those half-circle seals. The fact that yours has none is suspect.

Jeff may be able weigh in on pan variations through the history of the LM. However, that dipstick hole in the block is standard to all 318 castings.....so that's not the anomaly in this case.

I'd focus your efforts on finding a new pan. It'll be eaiser than finding a gasket for the current pan, plugging the block hole, etc."
 
"This is strange to say the le

"This is strange to say the least, both old motors have the same pan and the same plugged hole. Its a 79 318. so i really cant see why they would have swapped the pan on both. What i will say it thats a strange location for the dipstick right in front of the gas pump like that. A pan is going to cost quite a few $$$$"
 
"Well, maybe you should start

"Well, maybe you should start by making a trip to NAPA to see if they can track down a gasket that'll fit your existing pan. If they do, here's how I'd go about plugging that hole.....

Measure the hole and find a tap that's BARELY larger. Tap the hole and plug it with a bolt that corresponds to the tap's thread size (same concept as the engine block plugs). I know I'm stating the obvious but, if you go this route, do the tapping before you put the oil pan on and make sure you keep an eye on the shavings.

The emphasis on "BARELY" might allow you, or someone else, to still insert a dipstick tube into that hole in the future....with a little bit of sealer."
 
"If you have a 79 chrysler bui

"If you have a 79 chrysler build inboard marine 318 you probably have an cast aluminum oil pan.
They used stamped metal pans for outdrive engines and auto engines. It will have threaded bosses on the L & R side for a dip stick. you can use eithe side, whichever works for you.It takes a special gasket set. PN OS 30520M.
(Victor Reinz)
There are no holes in the pan for the end seals. They just fit into machined grooves in the pan.
The hole in the block was for the automotive or outdrive version engine, dip stick.
You can just knock out the core plug from the inside of old block and reinstall it in the new block.
You could also take a 5/16 bolt with sealant and install from the outside.
Joe"
 
"spoke to rapido, look liek it

"spoke to rapido, look liek it was a dipstick tube but they need a better pick to get me the right plug. What are the odds of pushing out teh old plug and using that ???"
 
"Based on the fact that they t

"Based on the fact that they told you they need a better picture, I wouldn't hold your breath for Rapido getting you a plug. All 318 blocks are the same casting.....so, knowing that you're talking about the dipstick hole, all they'd need to do is look at another block (which I'm guessing they have!).

If you think you can get the plug out of the old one....go for it."
 
What bothers me is the rust ar

What bothers me is the rust around the hole. If the block was cleaned/magnafluxed etc why all the corrosion so fast?
 
"They may block that hole when

"They may block that hole when painting....in which case, the raw cast iron would show rust pretty quickly.

It also wouldn't surprise me if, in this economy, some of these engines are sitting on the shelf for a while."
 
"all good points, well im on t

"all good points, well im on the hunt today for that plug and the gasket. Thanks all for the help. Im sure ill be back with more questions tonight"
 
No luck with that part # from

No luck with that part # from above. 3 places and non of them could reference it. If i cut the tabs off the gasket i have will it work? taking a chance on a leak?
 
That is the same on My 440s th

That is the same on My 440s there is a non threaded hole on either side of the block and the dip stick drops in and the other side has a drive in plug there is not enough pressure in the pan to blow any plug out if it is tapped in by a hammer. My thoughts
 
Before I sent my 440s to Jaspe

Before I sent my 440s to Jasper I took out my plugs because I figured I would never see them again. They drove out very easy from the back side and I was able to reuse them and I added a little siclicone
 
"FYI i have aluminum pans and

"FYI i have aluminum pans and be very careful when you tighten the bolts , I made the mistake of overtighten the bolts and it cracked the flang at every bolt. My pans have a oil splash pan in side so I have to use two gaskets. and with all that cork its easy to overtighten them"
 
"got the plug out in one peice

"got the plug out in one peice with the old motor hanging upside down then wracking the crap out of it with a screwdriver, put some gasket seal and it poped in the new block like a charm. I still cant find my oil pan seal some one has to have this guys. The book says 30lbs torq on the bolts, too much?"
 
I'm sorry I just happened

I'm sorry I just happened to rad you message.. What seal are you looking for? and do you know the part number?

Dave
 
"Does any one know how to iden

"Does any one know how to identify the Tube that i believe is for oil presure, it screws to the block next to the distrbuitor and the other end to where all of the electronics are connected to."
 
"Hey T - you're correct th

"Hey T - you're correct that the oil pressure sending unit screws into the block next to the dist. I'm not sure about the "tube" you're referring to. Your engine is a later model than mine so maybe it has a different sending system.

I have a "standard", oil pressure sending unit. It screws into the block and a signal wire is connected to it.....similar to a temp sensor."
 
"here are 2 pics, one is the t

"here are 2 pics, one is the tube for the block that goes in to the unit in the other picture. not sure what all of this does??
334734.jpg
oil connecting hose"">
334735.jpg
connects to hose
 
"Oil pressure goes to two plac

"Oil pressure goes to two places: the oil pressure gage, and the engine alarm system.

If that hose is like mine were, its rotten and ready to fail. I replaced mine with 1/8 " nylon tubing from an oil gage kit (any good hardware store.

Jeff"
 
"If you want the correct hose

"If you want the correct hose we have them available. They aren't cheap at $67.30 but we do have them. See the attached picture. Dave
334746.jpg
"
 
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