test drill your stringers and transom. use a 5/16" drill, mark off 3/4" length. drill into the encapsulated wood of the stringers and the transom about 4" up from the bottom of the deck. if the wood shavings come out dry, light colored, and smell like fresh sawn wood, then you are good...
could be any of the composites out there like Nida core or eqivalent. bear in mind, its 4x the cost of marine ply
https://merrittsupply.com/product/nida-core-structural-honeycomb-plain-h8pp/
Lets look at it another way. its not really fun to have to fish the refrigerator out of the bilge because the floor structure failed and you now have to pull the whole houseboat out of the water before it sinks because there is a 3" hole in the hull, the bilge pumps are all running max, and you...
the cover on the pump will have arrow rotation and which one is inlet/outlet based on rotation. if the crank mounted johnson pump has the inlet/outlet aimed at port, the lower one is inlet, upper is outlet. rotate the pump so the ports are aimed starboard, and the pump inlet is upper, outlet...
first, welcome aboard.
regarding your fuel tanks, remember, the bare hull had teh fuel tanks and motors installed before the hull was capped.
the choices are cut out the floor, cut out the transom, or uncap the hull.
I see you also posted on THT...
here is a link to the only place that I know of that still has parts for the old stringer drives. http://sterndrive.info/ they have videos, etc
here is a link to the factory manuals. https://outboardbooks.com/
the floor is rotten because the underlying structure is rotten. start by removing the old floor, then remove the rotten structure, and keep removing rotten material until you get to good material.
on a 52 year old houseboat with a fiberglass hull and wood stringers and transom, you may have to...
welcome aboard.
the boat has registration numbers from north carolina. as far as I know, you need to have a valid registration/title signed over along with the VL-1 form to transfer ownership.
https://www.ncwildlife.org/how-register-and-title-new-or-transfer-vesselpdf/open
Without the proper...
the only way to size props....... is mash the throttle at WOT, then report the RPMs and speed. you need to prop to get the motors to the upper end of the WOT RPM window
for a carbureted SBC or BBC, that is in the 4600-4800 RPM range.
Boat companies use up old stock. Boat could be a 1981 using a 1978-1980 drive they had
When you get parts, knowing the vintage of the drive will be important
The stock pistons are Mahle or Melling (interchangeable)
However any cast flat top with 2 valve reliefs from any of the piston manufacturers will be better than the cheap stock GM 4-valve reliefs
Don't over think a stock build
If you do not want to deck the block, get the slightly higher...
manifolds on a low hour motor means the other ones rotted from sitting.
the salt trails suggest there is internal corrosion in the drive, hence the bravoitus comment.
do some reading on bravoitus. https://www.google.com/search?-b-1-d&q=bravoitis
