Johnson Evinrude 40 Hp Gearcase / Lower Unit Pressure Test & Stuff

Its This Old Outboard. 40 Hp Johnson Gearcase / Lower Unit Pressure Test and Stuff. Recapping the 16' Starcraft transom. Hurricane Prepping. Free Foam for the Starcraft boat, will it work?
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It's This Old Outboard. Resurrecting Old Outboard Motors.

[Fireship]

I like to rotate all shafts by hand when I pressure test to see if I can make them leak under pressure. You didn’t want the hurricane in FL. We took it off your hands here in NJ! It knocked the power lines down on my street!

[timenfinger]

TOO! Been a subscriber for a couple of years now, Really love your videos, I look forward to them every week keep 'em coming. I acquired a '73 15.5' Starcraft with 40hp Yamaha a couple of months ago and I'm rebuilding it along side of you. Seems like a great boat, can't wait to finish it with your help.

[fleetwin]

Cool, thrilled you are finally trying to pressure test....Be careful with that compressor, too much pressure can help marginal seals stretch out and work, or possibly damage good seals. Generally, you want the pressure to be between 5-7PSI to check seals, then up to about 12PSI to check orings and gaskets. Newer gearcases like this have back to back seals that require a vaccum test to check the outer seals. Finally, it is best to drain all the gear lube out of the unit prior to pressure testing.
The best tool when pressure testing is a big bucket/tank of water that you can submerge the gearcase in...The air bubbles will be obvious in the water. Needless to say, you cant use the bucket for vacuum testing. Have another go at trying to just replace that oring, I have confidence in your ingenuity...

[alvarsdzenis]

closed cell is more rigid and dense. i've also heard of guys drilling holes in the plywood floor, and spraying closed cell high expansion foam into the holes. might be worth a look. or find some 2" rigid construction foam panels. or get a spray foam guy to coat the floor. I paid $100 to get mine done. makes the bottom more rigid and quiet and buoyant

[johnp]

The foam will work fine, have it in my boat for years, no issues

[craigtimmons]

Not gona tell you The Foam Will Work
Your like me if I didn't have bad luck I wouldn't have any luck.

Just had a 1983 70hp Evinrude in my shop with a no start condition, long story short it wound up being 7 gal of water in the fuel tank, After I found the water the owner stated he could only get 13gal of gas into an empty 20gal on board gas tank.
So pulled the tank drained everything and had to replace some very old deteriorated gas lines and had it running like a champ, Owner took it on the water said it ran great for 20mins and died now only runs on 1/2 or more choke, so back it comes for some carb cleanings and rebuilds.
Good Grief Charlie Brown 😤😡🤬💥
Anyways I pressure test all my 2 cycle stuff for air leaks and I use 8 to 10lbs of pressure and soapy water like you, its the easiest way besides submerging the entire unit in water to find leaks.

Hope you didn't get blowed away

[samtate]

I have a 1979 sylvan deep V open bow and it has that same stuff in it blocks and it don’t leak a drop

[ryanallen]

For the aluminum boat, try to use pvc board. Put one board on the inside of the boat and one on the outside. Bolt the two boards should be over an 1 1/2 thick transom. / - / Board - aluma - Board bolts all the way through

[chuckcecconi]

Put form a gasket on that brass piece that holds the oring in .. it holds just fine..

[danielrobert]

You really need to get a manual pressure/vacuum test kit. It'll pay for itself just by avoiding blowing those seals once from over pressurizing the system. Makes no difference which vent hole you plug in but the unit should be drained of its oil.

[stillakilla]

i'm not smart by any means but you had your john boat transom plate and the planks on that dock right next to each other in the same footage i bet those dock planks were treated too lol!!good times!!

[markc]

I wouldn't use it if your going to do it do it right the first time. What about polyurethane?? Enjoyed the video.

[OutBoardTink]

5 -7 lbs thats all I check mine them those seals are not made of steel in the contact area, Its a check not a bomb blast test. I mean how can 10 lbs or more hold in those old motors seals are for retaining oil....LMAOO ! I luv your videos

[Grottolova]

Stay with me: Think David Attenborough. Here we see the MidFlorida sexagenarian in his native habitat. Obviously showing signs of late-stage ADHD. These species need to keep moving constantly - only interrupted by their daily nap to recharge for the afternoon coffee then the trip to the VFW. 😂🤣 you keep going TOO. Love your play by play

[williamomara]

I think the purple foam you get from lows will be more ridged and closed cell

[williamriley]

No time for an Amazon delivery... But got a week to test friggin' foam... lmao Does it still float...???

[dinacaldwell]

I thought that guide you made was a bit of diy brilliance

[hookednrolling]

Etec gearcase is 3 to 6 psi if no leakage increase to 13 to 16 psi submerge in water and look for leaks if none than done JT 🇺🇸🇺🇸🐟🐠🛥🌴⛱😊😊🙏🏻🙏🏻🙏🏻

[glennwebster]

help !!! if ya can lol, , i have a 1974 25 hp tiller evinrude outboard, , i need a new part but o dont know the name of it and i dont see the part on the diagrams, , maybe called reverse lock lever or maybe tilt lock??, , it is manual, , it holds the motor propped up when ya going fishing and when ya get to the lake i flip the lever from lock to unlock, , i dont know where to order one from and i dont know what the part is called.. all i know is mine is worn out and keeps falling off and im gonna lose it and i sure dont want that to happen

[highwatercircutrider]

Twenty psi is to much. You only need to hold 6-8 psi. More important is to keep the gear case lube at the correct level as the oil pressures the seal to keep water out. Maybe to bushing itself is too worn and lose on the shaft. In that case a new o ring is not going to help.