Replacement engine for 1993 SNCB?

I thought all felpro’s were stainless ringed now? I had use regular automotive felpro on my HM first time around with no problems, when I went with gtp’s and before I took it apart I decided to use Marine ones. Don’t know who made them, got them from skidim they Suspiciously looked oem Ford not felpro

I just purchased an intake manifold from Outlaw in Florida, I will work on the other parts and likely order an engine soon.

Thanks again!

+1 for the ATK. I’ve done a Jasper, then an ATK, then a “high end” local rebuilder and the last rebuild which was for my 93 SN I went with the ATK again as I’ve felt they’ve been the best so far. I purchased through Summit. It arrived in maybe 5 days and I would go ATK for the next rebuild I might need.

How about ATK Performance engines in Texas.

DMA1R would be the model that should work for you. Reverse rotation one piece rear main seal, standard output 240 ish HP

They sell through Summit, Jeg's etc but if you call direct to ATK to check on availability , they'll probably hook you up with their Gearhead Engines branch that sells direct to the public and sometimes they have a 10% discount.

I've had good luck with them, shipping is free and fast.

Probably 5 days on a tractor trailer, it gives you time to pull the old one out, strip the parts you need and be ready for the new one.

Here's a link to their marine engine listing page

link

Here's a lijnk to it on Summit's site

link

It's a newer block with a dipstick hole in the block, you have the dipstick in the oil pan and the block hole can be plugged.

It's about a 3/8 inch hole below and between the #7and 8 spark plugs, if you don't plug it oil mist will come out

A marine long block from anybody will be your fastest route to go assuming you figure your engine right now is toast.

You sure you have a reverse rotation? What trans is in it? -

Yes, I believe so, looking at it from the front, the engine turns to the left, the firing order on the tag is 18456273, the model is PRD-PR-R10.

The trans is a PCM 1-1 that I believe they only used on the "base" boats that year. The engine has the angle to it like the older boats,   The output shaft rotates the same direction as the input shaft.

Could the problem just be exhaust manifolds or maybe you just want a new engine?   Boats run in full salt replace manifolds on a regular basis.

I wish it was just the manifolds, I have done the manifolds a few times on this engine over the years, always before I had an issue. Hoping this might be the problem now, and since the manifolds on the boat were about 5 years old I just replaced again, and I still have water going into the cylinder. To gain even more confidence in my diagnosis I slowly added water to the engine (not running, with the exhaust hoses blocked off) until it was full. I then cranked it over without the plugs in it and found cylinder #7 was taking on water.

This boat has always run perfectly, starts great, runs great. Incredible boat, I want to get it back running again ASAP:)

You sure you have a reverse rotation? What trans is in it?

Orlando76 wrote: Gary S wrote: You sure you have a reverse rotation? What trans is in it? 1993 is almost guaranteed to be LH. ‘94 they sort of reintroduced the RH for the year. .

Almost but not quite, here's a quote from one of his old posts    

93 Ski Nautique wrote: My boat is actually one of the "base" boats. It does not have the ProTec, that was the higher horsepower engine right? The boat has a 1.1 straight transmission, the engine is at an angle like the older ones, and it turns a 13x13 prop. All wiring is original other than plug wires.

93 Ski Nautique wrote: Well, it looks like the brackish water has taken it's toll on my engine. I have not pulled apart the engine yet but I anticipate repowering my 1993 Ski Nautique I have water filling up my cylinders on the left side.

John,
Could the problem just be exhaust manifolds or maybe you just want a new engine? Boats run in full salt replace manifolds on a regular basis.

Well, it looks like the brackish water has taken it's toll on my engine. I have not pulled apart the engine yet but I anticipate repowering my 1993 Ski Nautique base boat (351 carbed, not GT40).   I have water filling up my cylinders on the left side.

A couple of years ago SKI DIM had a PCM Chevy conversion, complete engine which would seem to be convenient but no longer are available from them. Also, I have always had boats with Fords and I really like the low end torque, and sound of the Fords.

I cannot seem to find a complete engine for a 351 at all, I am finding long block remans, Michigan Marine, and others have these ready to go. Of course this means bringing over my tin and other 25 year old parts

So, I realize there is not "right answer", but for those of you with reverse rotation, carbed 351 engines, what are your recommendations for a repower?