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What's the difference between a 351 and 302

B

bobdog

4x4 Addict!
Location
Sandy
351 has a little higher deck height. You won't have any trouble bolting it into a boat.
P.S. Jet boats should have Big Blocks!
 
B

bobdog

4x4 Addict!
Location
Sandy
What kind of jet is it? If I was looking for a jet boat I would turn and walk away from anything other than a Berkley. Make sure parts are available and the company is still in business. A good friend of mine learned a hard expensive lesson when his Panther jet sucked a ski rope in and he found out he had no choice other than to yhave a machinist custom make an impeller. As far as engine selection goes just about anything goes because of the way they are driven(driveshaft basically)
 
crimsonride

crimsonride

huh?
Location
Murray
I'll have to check on what kind of drive it was. Can't remember. It was one of the big names.
The boat is a marlin, kinda small, maybe 18 ft. It's a small bowrider. Not really the kind of boat you normally see with a jet drive. Anyway, since it's so cheap and jet drives are usually not a lot of hassle (hopefully) my buddy and I were thinking of buying it and fixing it, them possibly selling it.

So am I looking for a windsor 351 then? Does that make the most sense for this application? Are the manifolds the same and could I use the origional carb. I know it might short it some power but I don't want to deal with the hassle of a new carb and everything.
 
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muleskinner

muleskinner

Well-Known Member
Location
Enoch, UT
I have a TPI 351 in an 88 ford truck if you are interested 86000 mi. :cool: It needs the rear main replaced but it runs good. (comes with a truck too!)
 
Milner

Milner

formerly "rckcrlr"
Location
Hiding behind a camera
crimsonride said:
I'll have to check on what kind of drive it was. Can't remember. It was one of the big names.
The boat is a marlin, kinda small, maybe 18 ft. It's a small bowrider. Not really the kind of boat you normally see with a jet drive. Anyway, since it's so cheap and jet drives are usually not a lot of hassle (hopefully) my buddy and I were thinking of buying it and fixing it, them possibly selling it.

So am I looking for a windsor 351 then? Does that make the most sense for this application? Are the manifolds the same and could I use the origional carb. I know it might short it some power but I don't want to deal with the hassle of a new carb and everything.
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Yep, 351w. The exhaust manifolds are the same, just up an out a little due to the bigger heads. The carb will work, might have to jet it up a little....

Either the truck 5.8 or car 5.0 injection motor would be cool too!! Take a 5.0 mustang roller motor, put a 4 barrel intake on it with a carb, and away you go with a motor that will run some high R's.... :D
 
crimsonride

crimsonride

huh?
Location
Murray
Hmmmm, not sure about that. I'm not real familiar with what's different. Far as I've heard they use a different cam and that's about it. This boat has thru-hull exhaust so I'll have to see if moving the exhaust up and out a little will affect it.
A mustang motor would be awesome. :)
 
K

kirk86CJ

Registered User
Location
Riverton, Ut
crimsonride said:
Hmmmm, not sure about that. I'm not real familiar with what's different. Far as I've heard they use a different cam and that's about it. This boat has thru-hull exhaust so I'll have to see if moving the exhaust up and out a little will affect it.
A mustang motor would be awesome. :)
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I would also think boat engines are set up differently. They are designed to run around all day at over 4K rpm. A guy in Smithfield that has worked on mine (quite a bit) :rolleyes: said that boat engines come about 1/2 wore out new.

One more thing - the same guy told me he got boarded by the rangers at lake powell and they checked to make sure all of his engine parts (fuel pump, carb, air filter etc) were all marine grade stuff. We have a Cordova boat that was a kit type boat in 80-83. People bought the hull, and put the engine/outdrive combo they wanted. Our boat had an automotive carb (we bought it from the guy who had it put together) We had also installed a in-line electic fuel pump which apparently would have gotten us a ticket.

Point is you may want to check this out and make sure you wont get a ticket buy installing an automotive engine. I am just going by what this guy told me.
 
Caleb

Caleb

Well-Known Member
Location
Riverton
kirk86CJ said:
I would also think boat engines are set up differently. They are designed to run around all day at over 4K rpm. A guy in Smithfield that has worked on mine (quite a bit) :rolleyes: said that boat engines come about 1/2 wore out new.

One more thing - the same guy told me he got boarded by the rangers at lake powell and they checked to make sure all of his engine parts (fuel pump, carb, air filter etc) were all marine grade stuff. We have a Cordova boat that was a kit type boat in 80-83. People bought the hull, and put the engine/outdrive combo they wanted. Our boat had an automotive carb (we bought it from the guy who had it put together) We had also installed a in-line electic fuel pump which apparently would have gotten us a ticket.

Point is you may want to check this out and make sure you wont get a ticket buy installing an automotive engine. I am just going by what this guy told me.
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I dont buy it on the Rangers checking that stuff. The main difference is like on the fuel pump it has a little hose that comes off it so if the diaphram breaks (pump goes bad) it will circulate the fuel back into the carb(not letting it drain into the hull and get bilged into the lake)...I dont know the difference on the carbs (I know there is a difference but externally they are the same) the air filter is just a flame arrestor on boats.

I dont think the boat motors have different head gaskets (I know you can buy aftermarket marine ones though, but I think its mostly just marketing)...

having the exhaust not line up is a HUGE PITA...on one of our boats we swapped some old 350s out for some brand new mercruiser FI 350s and it changed the placement on the exhaust...generally you have a small piece of rubber hose that connects from the exhaust tips to the manifolds, because this piece is so short and so stiff we ended up having to re-cut new holes and fiberglass over the old ones (they were only off by about an inch on each one)...big project, while we were at the point we were at we ended up rebuilding the entire transome, putting new outdrives, bellhousings, etc on it...turned a $7K project (two motors) into an over $20K project:D

also I agree with bobdog about the big blocks in jet boats:D in our jet boat we originally had a stock 454...the engine caught fire and was totalled...we swapped in a VERY built small block...made more power than the BB for sure but that boat went from a 65-70mph boat to maybe a 40mph boat and we never could get the speed back (dont know what it is about the BBs;) ) :D...and about the parts availability...similar thing, we had to have a custom impeller made for ours too...and we had to have the nossle assembly rebuilt (similar to having a torn up prop rebuilt) which was pricey and time consuming.
 
crimsonride

crimsonride

huh?
Location
Murray
What did they need a 70 mph jet boat for? It was a brine company right?

Good news, it is a berkley and the hull looks good. Carpet and upholstry and what not isn't the best though.

I think I'll make the guy an offer and see what comes from it.
 
Caleb

Caleb

Well-Known Member
Location
Riverton
crimsonride said:
What did they need a 70 mph jet boat for? It was a brine company right?

Good news, it is a berkley and the hull looks good. Carpet and upholstry and what not isn't the best though.

I think I'll make the guy an offer and see what comes from it.
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same thing they needed a 120mgh pickle fork boat for...nothing:D


my boat was a 46ft budweiser style boat...I could do 90+ on the dense salt water...it was too big to get into Utah lake (lake was too low) and all the other lakes are too small to get it up to full speed (on Jordanelle I would go from one side all the way to the damn before I could even get it trimmed out at all)...in the brine shrimping business the fastest person gets the egg (and I almost always won the races:D)
 
crimsonride

crimsonride

huh?
Location
Murray
That's bad. So where'd all the boats go when the company disbanded?
One of the funest rides of my life was on a 37ft sonic on five foot seas at about 75. There's really nothing like that.
 
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Caleb

Caleb

Well-Known Member
Location
Riverton
crimsonride said:
That's bad. So where'd all the boats go when the company disbanded?
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we'll a few of the small (20ft-23ft) speed boats were sold, all the other boats (all the racing boats and larger, 25ft-46ft speed boats) are just sitting. The company still exists they just dont plan to fish for atleast five years. At first they just got rid of our department but as of last week they got rid of everyone but one warehouse employee and the sales people...moved everything overseas now. They have some pretty sweet fab equipment I would love to get my hands on but doubt they will let it go
 
Caleb

Caleb

Well-Known Member
Location
Riverton
crimsonride said:
One of the funest rides of my life was on a 37ft sonic on five foot seas at about 75. There's really nothing like that.
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yeah, my boat could do 60mph in 4ft seas as well as it could do 90 on glass:cool: most people dont realize that when you get to the 4-5ft seas in a normal speed boat the waves would be crashing over the sides and you are lucky to be able to move at an idle:D
 
crimsonride

crimsonride

huh?
Location
Murray
Yeah, no kidding, and half the time the boat's out of the water. Also, you're about 6' off the water so sometimes when you look down you're more like 10' above the water. That's too bad they've shut things down. Sounds like it was a lot of fun.
 
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