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View Full Version : Fun project at the shop. 1960s 25 bertram


RSWORDS
06-15-2019, 10:51 AM
Customer brought this beauty in to have us remove the 454 and stern drive amd bring it into the 21st century with some supercharged 4 stroke power.

We filled the transom, added an aux tank, Armstrong bracket, 350 Verado and snartcraft gauges. The "shrimp" motor really looks good in the hull. The curves play well with each other.

Been a fun project
Should get it wet this week.

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RSWORDS
06-15-2019, 10:55 AM
Some more441835441836
rock
06-15-2019, 01:05 PM
Very nice.
XstreamVking
06-15-2019, 01:45 PM
I re-furbed one of those a long time ago. Darn hull was 3/4'' solid glass where I was installing a transducer.
FMP
06-15-2019, 01:54 PM
Buddy had one with twin Mercruiser io sixes. Great big water boat. It was repowered with a single 454 later on.
JPEROG
06-16-2019, 11:10 AM
Curious to hear the performance results and how low it needs to be propped-please let us know.
Those are a strong heavy rig and it shows with the fact that its getting another power load at over 50 years of age.

Joe
JBS
06-16-2019, 06:02 PM
Nice glass work
RSWORDS
06-17-2019, 06:39 AM
Nice glass work

My shop cant take credit for it. We subbed it out. But yes it came out very nice.
89LASER
06-17-2019, 09:22 AM
What size Verado's are going on it? The work looks great. Are you using the original tank and the added tank?
RSWORDS
06-17-2019, 09:43 AM
What size Verado's are going on it? The work looks great. Are you using the original tank and the added tank?

Single 350. The original tank was replaced a few years ago and we've added an aux tank where the old motor was for some added range
FMP
06-17-2019, 11:24 AM
It'll move it fine
89LASER
06-17-2019, 11:55 AM
It should move nicely. I'm thinking a 15 pitch, 15 diameter prop when loaded should push it good.
RSWORDS
06-17-2019, 07:26 PM
It should move nicely. I'm thinking a 15 pitch, 15 diameter prop when loaded should push it good.

That was actually going to be my start point.
Capt.Insane-o
06-17-2019, 10:08 PM
Wave smasher...those are awesome old sleds.
RSWORDS
06-28-2019, 04:55 PM
Well did the sea trial today.....


50.1 mph at 6400 with two full tanks and a 16p enertia prop.

It may have more in it with a bigger prop but this guy will have it loaded down will 7 or 8 people regularly.


https://youtu.be/SfGp5Y2M5Qg
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FMP
06-28-2019, 05:02 PM
Pretty good!
FMP
06-28-2019, 05:17 PM
Bet she goes 55 in a two foot chop
RSWORDS
06-28-2019, 06:22 PM
I bet she has 55 with. More prop tuning but for the intended use this is perfect setup
TwzteD
06-28-2019, 08:06 PM
Is it faster than previous I/O power?
Velocity72
06-28-2019, 08:06 PM
It looks great. That Armstrong is huge! 30” or 36” setback? Wow.
RSWORDS
06-28-2019, 09:37 PM
Is it faster than previous I/O power?

Not sure. The owner brought it in with a messed up OMC cobra drive so I never ran it and he never ran it wide open
Tom Foley
06-29-2019, 06:13 AM
I re-furbed one of those a long time ago. Darn hull was 3/4'' solid glass where I was installing a transducer.
My 79 Mako 21 was 3/4" thick as well when I installed a raw water pickup through the hull !