20' bertram bahia mar

jturbo86

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Mar 28, 2016
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20' bertram bahia mar

Quick backstory: It was my grandfathers boat, he then purchased a bertram 30' unfortunately he passed in the middle of the full restoration and never got to see her in the water. The boat did however turnout beautiful. My father took the bahia mar and put it in, indoor, storage for 17+ years and now has handed it down to me knowing ill take excellent care of it and restore her to former glory. The boat is in excellent shape considering its age and is powered by a Merc 470.

I'll be completely re-wiring the boat, restoring the teak, rails, etc on top of the obvious gel coat polishing along with general maintenance. So far I started with 3m compound/wax combo to get the surface oxidation and grime off, ill be following it up with more wax/polish.

The engine hasnt been started in 17 years so I threw some marvel mystery in the cylinders, ill change the oil in the engine/lower, plugs and hope for the best. Any advice regarding starting this engine after it's long hibernation is greatly appreciated. After confirming the engine is (hopefully) somewhat healthy, ill rebuild the carb, replace gaskets, wires, etc. and address anything else that needs attentions. Expect weekly updates and pictures.

I hope to be active on the forums, thanks.
-John
 

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jturbo86

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Carb removed, ready for rebuild.... next, building a battery tray to hold 2 DEKA intimidator monsters.
Waiting for, Pertronix Flame thrower and igniter to arrive along with a new cap/plugs. Ill keep the postal service busy.
 

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jturbo86

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Carb Rebuilt, in the process of pulling the manifolds and heat exchanger (will be flushed), prepping for paint, new gaskets, hoping to start her up next week.
 

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jturbo86

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Swim platform restoration while waiting for more parts
 

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artificialreef

Chief Petty Officer
Joined
Feb 21, 2009
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504
Watch your temp on that 470. They blow head gaskets easy. Replace the impellar before starting. I bought an 83 with twin 470's. Started them and watched the temp to climb to 150 on 1 and keep on going to 160. Shut her down and tore into the impellars. The hot motor had a doughnut where the impellar was supposed to be, hence the temp issue. Luckily i shut her down in time before any gasket issues.
 

jturbo86

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Mar 28, 2016
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Did you only use a power washer?

Nope, used 80/120 grit sandpaper/starbright medium scrubber and the starbright teak kit, thats roughly 8 coats done over a 4 hr time frame in direct sunlight.

That is a beautiful boat.

Thanks a lot!

Watch your temp on that 470. They blow head gaskets easy. Replace the impellar before starting. I bought an 83 with twin 470's. Started them and watched the temp to climb to 150 on 1 and keep on going to 160. Shut her down and tore into the impellars. The hot motor had a doughnut where the impellar was supposed to be, hence the temp issue. Luckily i shut her down in time before any gasket issues.

Yes sir, replacing the impeller! thanks for the head-ups!


More to come!
 

Mikeopsycho

Senior Chief Petty Officer
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Feb 6, 2014
Messages
738
Nice boat! Did you say what year it is? I may have missed that.

I've got twin 470's in my boat. They were rebuilt just before I bought the boat 9 years ago, and with about 675 hours on them now all I've had to do is rebuild one carb. They sound like a D-9 cat when first started and like a sewing machine when warmed up.

Good luck with your cool project!
 

Ned L

Commander
Joined
Sep 17, 2008
Messages
2,268
As far starting the engine that hasn't run in 17 yrs, .... I would also do a quick compression check, ......... not to see what the numbers are (at this point you don?t really care), but to see that there is ?something?. This will tell you that the valves are all working and you don?t have one that is stuck open. This engine probably also has a ?points ignition? so check to see that you have a spark, you may need to pop the distributor cap and clean the points to get a spark.
(The engines in my boat hadn?t been turned over in 15 years, ... and they are from 1957.)
 

WOEISMEIGOTTA470

Petty Officer 1st Class
Joined
Aug 31, 2012
Messages
375
Ahoy, nice boat! Great job on that swim deck. As you may be able to tell from my handle, I've had it with 470's lol. I bought a straight six instead, off a guy who was going to use it in his Bertram Moppie! Good worthy boat of restoration, I'll be following along :)
 

jturbo86

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Mar 28, 2016
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As far starting the engine that hasn't run in 17 yrs, .... I would also do a quick compression check, ......... not to see what the numbers are (at this point you don’t really care), but to see that there is ‘something’. This will tell you that the valves are all working and you don’t have one that is stuck open. This engine probably also has a ‘points ignition’ so check to see that you have a spark, you may need to pop the distributor cap and clean the points to get a spark.
(The engines in my boat hadn’t been turned over in 15 years, ... and they are from 1957.)

Yea compression check is probably a good idea, I have the tools, might as well do it!

Nice boat! Did you say what year it is? I may have missed that.

I've got twin 470's in my boat. They were rebuilt just before I bought the boat 9 years ago, and with about 675 hours on them now all I've had to do is rebuild one carb. They sound like a D-9 cat when first started and like a sewing machine when warmed up.

Good luck with your cool project!

The boat is a 66, Yea im going to be putting in a lot of work this weekend, hoping for the best!

Good job on the platform and agreed good looking old boat!

Thanks!

Ahoy, nice boat! Great job on that swim deck. As you may be able to tell from my handle, I've had it with 470's lol. I bought a straight six instead, off a guy who was going to use it in his Bertram Moppie! Good worthy boat of restoration, I'll be following along :)

Thanks, every time I complete something on this boat it gets me even more motivated and antsy. Really looking forward to get her wet!
 

jturbo86

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Mar 28, 2016
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WOEISMEIGOTTA470, off hand do you know the fitting size on the fuel pump? I just saw your video and noticed the SS fuel lines, I have SS lines all over from project cars and bend the solid line that was on there taking the carb off (Whoops)
 

Ned L

Commander
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Sep 17, 2008
Messages
2,268
Yea compression check is probably a good idea, I have the tools, might as well do it.

Just keep in mind the cylinders and rings are dry, the rings may be a bit stuck, and the valves may have some dirt in the seats, so I would ignore the numbers until it has run for a fair bit.
 

WOEISMEIGOTTA470

Petty Officer 1st Class
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Aug 31, 2012
Messages
375
WOEISMEIGOTTA470, off hand do you know the fitting size on the fuel pump? I just saw your video and noticed the SS fuel lines, I have SS lines all over from project cars and bend the solid line that was on there taking the carb off (Whoops)

Hey, yeah those hard lines can be easy to bend out of whack. I believe the fuel pump fitting is a 1/8NPT, and I used -6AN hose.
 

WOEISMEIGOTTA470

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Aug 31, 2012
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375
FYI if the hole in the fuel pump is about 3/8", then it's 1/8npt...
Edit: also, might want to pull the dizzy, and spin the oil pump around with a drill first and prime the engine with fresh oil before you try cranking it over.
 
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jturbo86

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Mar 28, 2016
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FYI if the hole in the fuel pump is about 3/8", then it's 1/8npt...
Edit: also, might want to pull the dizzy, and spin the oil pump around with a drill first and prime the engine with fresh oil before you try cranking it over.


Would I need an extra dizzy shaft w/o gears to do this w/o the cam moving? any advice on doing this is welcome, thanks!
 

jturbo86

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Joined
Mar 28, 2016
Messages
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Ended up using a 8mm Hex to prime it. Got a decent amount done today, flushed coolant systems, changed oil and primed, drained old gas (there was a lot, that sucked), and put carb/manifolds back on. Hoping to get her started tomorrow but I have very limited time due to the holiday. If that doesn't go as planned it'll have to be Tuesday!
 
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