SSM5 to #6 help
 

I need some help , mostly because I don`t know wtf I`m doing .
(these are all just preliminary measurements )

I figured out my crankshaft centerline.
Seems to be 18 3/8 from the bottom.(the hull is at an angle so I`m not sure exactly which side of the tape measure to read but it`s close either way)

This is how I got to that conclusion:
Measured 4" down from center hole then to bottom of hull.

https://cimg7.ibsrv.net/gimg/www.off...c8d6e4c146.jpg
https://cimg9.ibsrv.net/gimg/www.off...663ea2ea73.jpg

talking this out so it makes sense in my head.
 

Since a #5 drive is 18 11/16 propshaft to driveshaft that puts me 5/16 below the bottom with the #5 drive.

18 3/8 - 18 11/16= 5/16.

I think I did that right .


https://cimg3.ibsrv.net/gimg/www.off...4e150e51d4.jpg

I want the SSM6 2" above bottom.

#6 is 18.63" from propshaft to Drive shaft .
taking into account the 13* transom angle. 18.63/cosine of 13 degrees =19.120" (not my math , thanx Jeff Wagner)
Then 19.120 plus 2 5/16?
That`s 21.43. Not sure if this is correct.

https://cimg4.ibsrv.net/gimg/www.off...1b2cc41c93.jpg


https://cimg7.ibsrv.net/gimg/www.off...ace090f9fb.jpg

Assuming that is correct what happens when 10" boxes get thrown into the mix?


https://cimg2.ibsrv.net/gimg/www.off...879509bf02.jpg

Dan, you will need to measure if there is an angle on the boxes, or if they are square. If they are square take the angle of the transom, divide the angle into one inch to see how much drop per inch at that angle. Measure the length of the box and times it by the drop per inch. This will give you the measurement of how much lower the X dimension will be. Think rise over run upside down. If the boxes have an angle, positive or negative you will have to allow for the combination. If the boxes have the same angle front and rear as the transom it will cancel out any drop.
If you have any questions call me.

Does the #6 transom assembly not account for any transom angle? You’ll also have to figure a number for water rise with the ext boxes. If it rises 1” for 12” of set back, then 10” would equal .8333”.

Ssm 6 transom assemblies account for a 13* transom angle.
I’ve never used the math measuring along the transom, I measure perpendicular to the running surface.
If you want the propshafts 2” below the bottom set the crank centerline measurement at shaft to shaft +2”. The boxes move the drive straight back, they look like they have rise in them, but that accounts for the 13* transom angle so the drives don’t end up lower.
2” above sounds like a good spot for them, the Old School top gun with a notched transom was 1” below the bottom, transom notched, no boxes and had no issues getting on plane. I was trying to talk Kevin into going up 2” with that setup when he had it.

Once I get the drives I`ll attach to the boat and make sure the drives end up where I want them .


I leveled the boat, ran a laser across the strakes on each side. Found center, measured 18" from center to find center of each drive.
Then went up 2"

That should get me pretty close if i`m doing this right lol


https://cimg4.ibsrv.net/gimg/www.off...df6cee9b19.jpg
https://cimg6.ibsrv.net/gimg/www.off...f354e4f449.jpg
https://cimg8.ibsrv.net/gimg/www.off...db115e47fe.jpg

These should help quite a bit


https://cimg4.ibsrv.net/gimg/www.off...5047c886a0.jpg
https://cimg5.ibsrv.net/gimg/www.off...2d040c05c5.jpg

Just curious why the extension boxes???

No room to move engines up and forward. Extension box needed so a driveshaft can be used and engine can stay in place

Did you buy the jig plates? Very nice, I think I read Glass Dave had some.

I`m borrowing them .

OK ! I'll do it Jamie! I'll do it!

Make sure you calculate your driveshaft angle if can't move the engines, it may dictate how high you can go.

Transom to propshaft is 5'.. that`s going to be out there ... these #6 things are heavy, gotta somehow mock this up on theboat https://cimg5.ibsrv.net/gimg/www.off...c619802a3b.jpg

Damn thats a lot of weight, Ive seen this setup on a 42 Tiger dont think Ive seen it on a gun


https://cimg2.ibsrv.net/gimg/www.off...d19fe6264c.jpg

Several top guns had 6’s on boxes. I had an album stored in one of my old phones of all the ssm 6 guns.

5’ from transom to leading edge of propeller?

To the end of the propshaft.

F6- Speedy, I`ll have my guy do the "racelayup" Glass Dave special on the transom

Lil red , how do you fill the wet sumps , there`s no vent .Fill till the overflow starts to get oil in it?
Which leads me to my second question.
I got dry sump inner transom assemblies with these so no resevoir. At what height should I mount the overflow? Any idea?
Aslo what oil in the driveline gimbal?

yes, fill it from the bottom through the drive, right into the tank
The wet sumps used a tank built into the inner transom plate. You can mount a tank so the level of the oil stays in between the top and second bolt hole in the transom. Gear oil in the drive line carrier, same oil you decide to use in the drives. Torco, amsoil, newer merc gold.

So excited for you it's going to be badass and with the entire new setup you will break 100 easy! So badass

I think I got it figured out , I got some laser high tech $hit going on over here that helped lol
23* fun times .


https://cimg7.ibsrv.net/gimg/www.off...ce8bd25758.jpg
https://cimg9.ibsrv.net/gimg/www.off...7c070e3a53.jpg
https://cimg0.ibsrv.net/gimg/www.off...a4948f6c3a.jpg
https://cimg3.ibsrv.net/gimg/www.off...718dfa8724.jpg
https://cimg4.ibsrv.net/gimg/www.off...44cbd82f8f.jpg

BRrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr

Had to think about those pictures for a minute, it looks like the whole assembly was leaning up against the transom and supported by the floorjack on the propshaft, raised up/down tapped around and marked, then i realized you had that custom template to find plumb, center and X, the floorjack was just holding nuetral trim for the laser double check and pics.

nice job, hell of an update !
you take a picture with the template ?

No trim hooked up so yes you have it right.
The templates are pretty sweet , I`ll snap a picture of the set up later .

Hey Dan if you want wet sump six inner plates with the reservoir, I have a set. I will trade u for the dry sump plates. I have a set of wet sump sixes that were converted to dry sumps that I will be selling . I would rather have dry sump plates. Tom

I was going to use my latham bottles but I`d be up for that . clean up the transom a bit .

shoot me an email [email protected]

sent.

depending on how you will be bracing the inside of your transom you may want to keep the dry inside plates as the wet sump 's are quite a bit bigger. They got in the way of my transom stiffening fiberglass web. I ended up mounting Latham clear reservoirs which are much easier too see oil level and what's going on with it --- bubbles, milky etc... just a thought.

it will be interesting how the boxes will work on a side by side -- i was thinking of doing the same on a 41' Apache side by side with a notch...

Dan I have transom envy . RG
The one question I do have , could you not have gone with plug ins as opposed to drive lines . I do understand that the engine mounting height might change nut I am not sure that the plug in would move the motors that much further forward . But I am not familiar with 6 drive mounting . Cheers RG.

Rick,
I`d have to sell my transmissions, buy plug ins, find plug in transom assemblies.
Plus I want those drives further back so I like the box .

Hi Dan , makes perfect . RG.