fish nautique prop rotation |
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75 Tique
Grand Poobah Joined: August-12-2004 Location: Seven Lakes, NC Status: Offline Points: 6121 |
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“So, how was your weekend?” “Well, let me see…sun burn, stiff neck, screwed up back, assorted aches and pains….yup, my weekend was great, thanks for asking.” |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11046 |
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Good picture Larry of a transmission set up for a RH reverse rotating engine. Some also say RH or LH next to the arrow.
Harold Here's a thread about posting pictures, the first post tells how posting pictures |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11046 |
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Here's a picture of one set up for normal automotive rotation
In later years the LH and RH were removed to reduce confusion |
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turboapache
Groupie Joined: February-19-2012 Location: Lake Placid Fl Status: Offline Points: 46 |
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This gets very confusing because I was there and helped to pull this motor and trans out of the old boat as an assembly. Now looking at the trans pump it is clearly set up for a right hand rotation but the eng is for sure a standard rotation. There is no way that I can see for this combo to have ever worked. The only thing I can figure is someone who did not know what they were doing put the wrong eng and trans together and could not get it to work so that is why the boat sat and was being scrapped. Another thing I found that suggests they did not know very much as mechanics was when I tore the eng down the rings were .030 undersize for the pistons. The ring gaps were about .050 and should have been no more than .020 at most. There would have been tremendous blow by and pressure in the crank case. I built high performance engs for years and I am 72 now and I have to shake my head at some of the things I have seen some people do. It looks like to me that I will finish the eng build as a standard rotation and index the pump so it is turning in the proper direction and hope there is no damage to the trans and change the prop to a LH. I still welcome any help and advice from everyone. Now I have to find a LH prop.
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there is no substitution for cubic inches.
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Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13513 |
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That sounds like the easy part |
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turboapache
Groupie Joined: February-19-2012 Location: Lake Placid Fl Status: Offline Points: 46 |
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Is there a place on the site I should look for a LH prop??? Does anyone know what the standard factory prop was on the 86 Fish Nautique?
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there is no substitution for cubic inches.
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turboapache
Groupie Joined: February-19-2012 Location: Lake Placid Fl Status: Offline Points: 46 |
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[IGM]uploads/12151/DCP_0987.JPG[/IMG] I was trying to post some photos of when we pulled the eng and trans but I must be doing something wrong.
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there is no substitution for cubic inches.
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quinner
Grand Poobah Joined: October-12-2005 Location: Unknown Status: Offline Points: 5828 |
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First one should be IMG not IGM
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Is the engine still apart? Some pictures of the crank where the rear seal runs would be nice. Lefty and righty cranks had different direction wick lines at one time. When spun opposite they will cause the seal to leak.
Some will be happy to see the PO used a quality filter. Painting an orange filter black has to make it better |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Duane in Indy
Platinum Member Joined: October-26-2015 Location: Indiana Status: Offline Points: 1578 |
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This is what a RR crank will look like. You can see the oil wick lines on it. KENO was going to take his crankshaft out of his engine and photo it but I told him that I already had a photo of mine. |
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Keep it as original as YOU want it
1978 Mustang (modified) |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11046 |
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No, No Duane
I was gonna take your engine apart but luckily you have a picture already |
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turboapache
Groupie Joined: February-19-2012 Location: Lake Placid Fl Status: Offline Points: 46 |
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wick lines show as automotive, all other indicators also show auto rotation. Still trying to figure out the photo posting, I think I had some help from quinner on the two that are in my other post. Thanks
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there is no substitution for cubic inches.
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turboapache
Groupie Joined: February-19-2012 Location: Lake Placid Fl Status: Offline Points: 46 |
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there is no substitution for cubic inches.
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Harold,
It's hard to see the cam screw on the RWP (raw water pump) from the picture but the RWP looks like it's on backwards for a standard rotation engine. The screw is a good indicator of flow direction. Many have installed their RWP backwards/upside down. Glad to see you got the picture posting figured out! |
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turboapache
Groupie Joined: February-19-2012 Location: Lake Placid Fl Status: Offline Points: 46 |
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Here are some of the things going into the new eng build
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there is no substitution for cubic inches.
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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New crank new cam it doesn't make a difference now what it used to turn. As long as the distributor fits.... but that raw water pump is on for a righty 😯. Where did you get that oil pan those are hard to find. Unless you stumble over one.
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woodyelc
Senior Member Joined: February-17-2004 Location: orlando Status: Offline Points: 378 |
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If you put this motor in a FN you will need to put 4 inch spacer,s on the exhaust manifolds or you will have water coming back into the motor. You will need a 14x11x1/18 left hand prop. I might have one at the store. FYI the rear main seal was changed about 1983 and the hash marks went away on the crankshaft and seal took care of it. Same crank used LH or RH.
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woodyelc
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turboapache
Groupie Joined: February-19-2012 Location: Lake Placid Fl Status: Offline Points: 46 |
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The oil pan came on the eng. If you look at the photos you can see just how everything was just as we pulled it.
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there is no substitution for cubic inches.
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turboapache
Groupie Joined: February-19-2012 Location: Lake Placid Fl Status: Offline Points: 46 |
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As for the cam screw as I understand it is to the outside away from the eng. The photo showing the raw water pump is just as it was when we pulled it. I am so thankful to all who are helping because there is so much I do not know about all this.
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there is no substitution for cubic inches.
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turboapache
Groupie Joined: February-19-2012 Location: Lake Placid Fl Status: Offline Points: 46 |
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I need some clarification on the prop dimentions. Are you saying that the prop is 14x11 for a 1 and 1/8th shaft? Thanks
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there is no substitution for cubic inches.
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Spacers? Where, between the manifolds and risers? Please explain. |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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I would venture to guess between the riser and pyramid manifold Pete. That motor looks to sit kinda low in the boat. Backing down and a following sea could get water in the engine. Mufflers might help but you guys don't like them.....
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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My guess as well but just asking for a confirmation. |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13513 |
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Looks like a late 90s engine which would naturally be LH. Someone definitely screwed up and probably why it's in your hands now.
Raw water pump is upside down. Yes Fish 23' had a 1.125 diameter shaft. |
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woodyelc
Senior Member Joined: February-17-2004 Location: orlando Status: Offline Points: 378 |
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You are correct that the following sea will let water into motor without the risers. Motor sits to deep in the bilge. What year did the motor come out of. Where is the I.D tag on the intake.
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woodyelc
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Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13513 |
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Use flappers on the exhaust outlets
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woodyelc
Senior Member Joined: February-17-2004 Location: orlando Status: Offline Points: 378 |
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flappers will not stop the water from coming in.
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woodyelc
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Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13513 |
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are you recommending against using them?
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