78/79 ski-tique rod knocking |
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allanonjj
Groupie Joined: August-17-2011 Location: THOMASVILLE, GA Status: Offline Points: 94 |
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Posted: August-17-2011 at 3:58pm |
Ok,.... hello all. This is my first post so Im gonna try and make it valid. I bought a ski-tique for $1500 from a buddy thinking I would be able to get the timing right (reverse engine, thought he had it wrong) and have a good running boat. Thats not however what I got myself into. Come to find out there is a rod knocking under load, the fuel tank is about 50% fuel, the rest is water and trash, and because of the dirty fuel tank, Im thinking I will need to replace the carb. The heads say that its a 302 but I seem to recall seeing somewhere on the block that say 289 or something (cant remember the exact cubic inch).
Heres my question: I found this kit on ebay http://cgi.ebay.com/ebaymotors/Ford-Marine-302-MASTER-Engine-Kit-Pistons-Cam-REV-2pc-/170649103500?pt=Motors_Car_Truck_Parts_Accessories&hash=item27bb7aac8c and heres a crankshaft http://cgi.ebay.com/ebaymotors/Ford-302-crankshaft-kit-w-bearings-1982-90-15850-/380357391297?pt=Motors_Car_Truck_Parts_Accessories&hash=item588f1133c1 Other than the machine work, is there anything else I need to be concerned with when I pull the engine to do the rebuild? Im not a "mechanic" but Ive built several 11 second imports (Hondas) and put a fuel injected vortec 350 in a 2000 s10, along with several other head jobs and what not.. (my point is that I am very mechanicaly inclined) Ive ever worked on a marine engine, not to mention one that spins reverse the normal direction so im just asking for any "heads ups" that I can get from folks who have done or do this kind of rebuild. 1.Is there anything different on the crankshaft of a "reverse" engine? The one in the link above is for a stock 302 car engine so unless someone tells me otherwise I'll be ordering it. 2.What type of carburetor should I put back on? Im sure I could spend a gazillion dollars on the best of the best but Im not trying to win any trophies here. I just want a good running boat with decent fuel economy. I need to be able to have 4 people in the boat and 2 wakeboarding/tubing or whatever. Any links to said carburetor would be gretly appreciated. 3. I know from personal experience with other hobbies that sometimes these "ebay kits" arent quality so if you KNOW that its not, please speak up. 4.Can I use a normal cherry picker to get the engine out of the boat? I suppose I could make a little wooden frame to set the cherry picker on to allow for more vertical lift to clear the sides of the boat if necessary. Like I said before, if there are any "what out for this" things I should kepp an eye out for, please tell me. Thanks in advance! JJ 229-224-4757 |
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Bri892001
Grand Poobah Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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You might want to check out this thread 302 Teardown
There are some specifics such as rear main seal differences depending on rotation that you want to think about. For carb you want a MARINE Holley 4160. You can get them at a few different places. |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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JJ,
Welcome to CCfan. Regarding getting the engine out with an engine hoist, depending on it's lifting height, you may need to take the tire/wheel off one side of the trailer. |
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allanonjj
Groupie Joined: August-17-2011 Location: THOMASVILLE, GA Status: Offline Points: 94 |
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thanks for the advice on the carb,.. Know where I can get it the cheapest? Ebay?
As for the 302 Teardown thread, It was helpfull with opinions on stroker vs not and which part #s and all but the guy that did that thread didnt do the actual teardown himself. Im going to be pulling the heads and bottom end off the block and taking a bare block to the machine shop. If there are any pesky bolts that like to break off in the head or anything like that or if theres a "trick" to getting the flux capacitor off or something,.. that is what I need to know about. Also, I assume that repair book in there has the torque specs for the heads/mains/lowers etc... If so,.. Ill get it ordered. Thanks again,.. keep it coming please |
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allanonjj
Groupie Joined: August-17-2011 Location: THOMASVILLE, GA Status: Offline Points: 94 |
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will do about the trailer,... Does my engine have a two piece rear seal?
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Bri892001
Grand Poobah Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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As far as the carb, I'd tend to stay off eBay for the most part. Check with SkiDim (which has a 10 % discount if you use code "USA"), Nautiqueparts.com, MyCorrectCraftParts.com or Jody on the site who is FLInboards. You can get them specifically for the 302 vs. the 351 and make sure you go Marine.
Not sure on the main seal question. Hopefully someone else can weigh in on that. I don't know if there's anyway to tell until you've got it apart. |
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kapla
Grand Poobah Joined: March-27-2008 Location: BA, Argentina Status: Offline Points: 6148 |
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on the carb summit has a good price also...I´d sure check there!
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<a href="">1992 ski nautique
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allanonjj
Groupie Joined: August-17-2011 Location: THOMASVILLE, GA Status: Offline Points: 94 |
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thanks guys.
Heres my boat: Is there anything weird you can see from the photos that I should be concerned about? |
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eric lavine
Grand Poobah Joined: August-13-2006 Location: United States Status: Offline Points: 13413 |
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4150 for a 302
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"the things you own will start to own you"
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eric lavine
Grand Poobah Joined: August-13-2006 Location: United States Status: Offline Points: 13413 |
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get rid of the vacuum advance also, its for a car
you need a flyweight advance dist. |
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"the things you own will start to own you"
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Bri892001
Grand Poobah Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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Nice looking boat all in all.
+1 on the distributor. I thought a 4150 Holley was a double pumper? I though the 302s just took a different CFM rating of the 4160? |
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kapla
Grand Poobah Joined: March-27-2008 Location: BA, Argentina Status: Offline Points: 6148 |
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i see lots of non marine part! the dizzy as eric states! and that edelbrick sure its not marine!
you need a flame arrestor, not a air filter! that is some serious hacked boat! rubber fuel hose on the hp side not usgc approved! on the marine thing is safety hazzard! automotive parts such as fuel pump, carb, dizzy will work just fine, but are not leak proof nor ignition protected, so in a bilge and the collection of gas fumes can make your boat blow up!!!! so first off you better start swapping all non marine parts there! |
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<a href="">1992 ski nautique
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kapla
Grand Poobah Joined: March-27-2008 Location: BA, Argentina Status: Offline Points: 6148 |
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that ring replament it creative though
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<a href="">1992 ski nautique
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kapla
Grand Poobah Joined: March-27-2008 Location: BA, Argentina Status: Offline Points: 6148 |
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4150 its indeed a dp! I think the right would be the 4160 on its 450cfm version if you plan on keeping it stock!
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<a href="">1992 ski nautique
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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You had better do a stringer check too!!
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21186 |
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Kap's correct. You want a 450cfm Holley 4160 (with vacuum secondaries). Your engine is a 302... the change from 289 to 302 occurred back in '67-69. |
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allanonjj
Groupie Joined: August-17-2011 Location: THOMASVILLE, GA Status: Offline Points: 94 |
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OK,.. SO NOW THATS WHAT iM TALKING ABOUT.
1.I assume "4150 for a 302" means a Holley 4150 carb for the 302? 2. I can tune a fuel map and re-flash it on an ecm but when it comes to carburetors my knowledge is a little on the lacking side. What is the "vacuum advance"? 3. Where can I get a "flyweight advance dist". Is it a really light distributor thats ahead of its class?...lol 4.Ive HEARD of a flame arrestor but dont know what exactly it is. I think it is supposed to keep a backfire from coming up and igniting fuel vapors right? 5."rubber fuel hose on the hp side not usgc approved!" Is that the rubber hose that runs to the back of the carb? Should it be some sort of high pressure hose? If so, where can I get one? What does USGC mean? 6. "that ring replament it creative though" What do you mean by ring replacement? Thank you sooo much! I am soaking this up like a sponge.... well more like a terry cloth (thats a lot to take in all at once,.. lol) |
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Bri892001
Grand Poobah Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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1.) 4150 and 4160 are two very similar models of 4 barrel Holley Carburetor. Holley uses modular carbs, so certain things are the same. What's mainly different is the way the secondary barrels open. The 4150 opens them mechanically, and also the second set of barrels have their own accelerator pump, that's how it gets to be called "double pumper."
Most ski boats will have the 4160 vacuum secondary because the secondaries don't open until the conditions are right. If they opened too soon (before the motor is revved up enough) you can get a bog. 2.) Vacuum advance refers to the distributor. You want mechanical for a boat for a couple of reasons. I think the vacuum port is a potential channel for escaped spark. Also, load conditions are different on a boat, and the weighted advance addresses that better. I think it's largely because boats are never "coasting" like a car would. I think the vacuum advance can pile on more advance than a boat motor can handle under load, but I'd happily be corrected with a good explanation. Not sure on that myself. 3.) You can get a good marine (weight advance) dist using any of the parts places above, or by swapping around through this site. 4.)Flame arestor is a boat's version of an air cleaner. You generally don't have dusty air while boating, so this piece is specialized to concentrate on keeping the flash of any backfire at bay. 5.) Different type of fuel line. You wanted hardened line for the fuel that's under pressure from the fuel pump. 6.) I'll leave that for Kap to explain Most of the differences come from the fact that spilled gasoline and escaped vapors have no where to go in the bilge of a boat. In a car, they just excape onto the ground or the open air. That's why the blower is so important to. |
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21186 |
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There is no need for vacuum advance on a marine distributor because boats is always under load (never coasting), thus, timing is 100% dependent on RPM (mechanical advance). In normal street operation, cars see a huge range of different driving conditions, where vacuum advance is necessary. There is a good explanation of how it works here. Basically, a distributor with vacuum advance would work just fine in a boat- but that feature will never be utilized. The mechanical advance will do it all. However, the fact that the distributor is not marine grade is a major safety problem- and should be replaced with a proper one. The vacuum advance mechanism simply makes it easier to spot. |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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JJ,
Listen to us and not that "buddy" you bought that "basket" case boat from. You actually consider him to be a friend!! I have got to ask but was he the actual guy who "bastardized" that engine?? Personally, I sure would not ask him for any more advice!! You have a bomb just waiting to happen under that dog house. Don't forget, considering looking at the pictures as well as the age of the boat, you MUST check out the stringer condition |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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JJ here is a good book on rebuilding a small block Ford. Im not current on reverse rotation cranks,but there was a difference on early ones and it's all in the rear main seal area.When you take it apart, post a picture of where the seal rides on the crank.Someone will know just looking at it if it's the correct crank and you would be way ahead to have it reground.
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GottaSki
Grand Poobah Joined: April-21-2005 Location: NE CT Status: Offline Points: 3363 |
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Everything already said is spot on.
Don't get discouraged, we'll get you squared away. I just must repeat your conditions under the hood are serious, Ok those pix make my eyes hurt, Cooter's been everywhere it seems this season! |
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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."
River Rat to Mole |
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Bri892001
Grand Poobah Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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JJ,
Hopefully you don't take it too hard. I actually feel like for $1,500, you didn't do too bad for a project boat. I mean, the engine needs help, but at least there is an engine. And, all of the automotive grade stuff on there, chances are, you'd be replacing it anyway as part of any refurb/restoration. Some people seem to have a line on deals. But as far as I can tell, the only thing that says Correct Craft on it that you can buy for less than $1,500 is a t-shirt |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Brian, I think Seb is talking about the "ring and finger" on the pylon. Maybe you missed it but it looks like the PO stuck a hitch pin in it for a 3 point tractor mount!! |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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JJ,
Have you checked the direction that engine spinning? With all that automotive stuff on it, I'm just wondering!!??? |
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eric lavine
Grand Poobah Joined: August-13-2006 Location: United States Status: Offline Points: 13413 |
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sorry, meant 450 cfm
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"the things you own will start to own you"
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allanonjj
Groupie Joined: August-17-2011 Location: THOMASVILLE, GA Status: Offline Points: 94 |
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Ok,.. I can see this is going to be fun! I love a good challenge.
As for the guy I got it from,.. I asked him a few questions (just general mechanical questions) before I bought the boat and it was plainly obvious that he has NO CLUE about ANYTHING mechanical. This is the same guy that had me meet him to change his tire,... lol I love him to death but a mechanic he IS NOT. He bought the boat from a friend of his (the culprit from which all the automotive parts came about) for $1500 and then had a few of his other buddies "check it out" for him. I hate that it needs some work but from what it looks like I might not be in too bad of shape. After thinking about this for awhile, I think Im just gonna pull the engine, put it on an engine stand, flip it over, and pull the bottom end/crankshaft. I think I may get off with just replacing the crankshaft and bearings, maybe a rod. Im not sure but thats where Im gonna start. Im listening to what everyone is saying about this rear main seal and tell me if I am understanding this correctly,...There are two types of blocks, one has a 1 piece seal and the other has a 2 piece,... right? With that being said,.. are the cranks going to be different? Will the rods in this motor bolt on to a regular stock 302 crank? Also, can I "convert" this block from needing a 2 peice to the "more readily available" 1 peice seal? What is a stringer? You guys dont know how much I appreciate the advice,.. youve already saved me hundreds in mistakes (because I know me lol) and it sounds like maybe even my life! (spark arrestor) THANK YOU |
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Bri892001
Grand Poobah Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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Go right to this page and skip to about halfway down.
Look for the post where it is TRBENJ followed by ReidP, they get into the difference in the rear seals and the wic lines on the crank etc. |
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allanonjj
Groupie Joined: August-17-2011 Location: THOMASVILLE, GA Status: Offline Points: 94 |
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Ok, so I had it backwards,.. the 2 piece is more available.... When I get the engine out and apart I'll take pics and post them up so I'll know which one Ive got.
Still curious on the "stringer". Ive heard of it before but not quite sure what it is and its function. |
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Bri892001
Grand Poobah Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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Oh, I forgot.
"Stringer" has nothing to do with the engine. It's part of the structure of the hull of the boat. It's almost like a floor joist, and the major ones run from front to back. Any Correct Craft built before 93 has wooden stringers. And, it's possible for them to get water intrusion, one way or another, and to rot. Pete is suggesting that you check how sold they are before you go too far. That's another whole project. Do-able, but its a project. |
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