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Glastron GT-150 - Hull mods to make it handle 150 HP

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Expand view Topic review: Glastron GT-150 - Hull mods to make it handle 150 HP

Re: Glastron GT-150 - Hull mods to make it handle 150 HP

by Hippie459MN » Dec 05, 2021 12:16 pm

Very cool Ron! Just when I think you can't out do yourself, You go and out do yourself. LoL

Re: Glastron GT-150 - Hull mods to make it handle 150 HP

by alaskastreamin » Dec 04, 2021 3:52 pm

Thanks guys!! I really like this stuff as well!

One thing I didn’t show.

I wanted a liner inside the cowl like factory.

I took pictures and measurements from my 280 factory cowl for reference.

I hot glued 1” foam to the inside to create the air void and water drain channels.
Covered with spray glue and tin foil.
Cut a CSM and cloth then laid up with some black gel coat pigment in the resin.

Popped off, cleaned the foam out and glued in place.

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Re: Glastron GT-150 - Hull mods to make it handle 150 HP

by TonyC » Dec 03, 2021 10:29 pm

As a Glastron Carlson owner and fan myself all I can say is incredible! The boat is beautiful and the engine is awesome! Excellent work!!

Re: Glastron GT-150 - Hull mods to make it handle 150 HP

by NHstreamer » Jul 17, 2020 10:22 am

Tip of the hat!
Newbie here, wanted to express admiration for Your engineering skill!
Loved your Viper build. I just bought my nephews 80 ish Viper/150 Johnson, $hit ton of fun!
In digressing order, raceboatless, is that a word? For the last 7 years. Filled gap with SeaDoo, P toon
And vicariously through my nephew, pro Merc mech. He caught the bug!
Prior, a 88 hydrostream Valero/175 johnrude to 200 efi Merc solid 80+mph. Why did I sell that? Anyway.
Prior, 1990 Gtron Carlson Cvx 17/115 rude- ahh the skiing years! Dislocated shoulder and 3 surgeries ended that. Getting older.
Prior, 1971 GT 150/125 Johnson just like yours! So now I’m 15 again. Dad the original hot boater, long story
Thought that was a practical family boat. I kept it nice till 1990 when the Carlson came in.
Best we could get was low 50-1-2 with 21 alum prop standard stuffed engine height, no trim. wtf.
You can imagine how much fun a teenager had with that. Thanks for the memories!
Cheers, NHstreamer

Re: Glastron GT-150 - Hull mods to make it handle 150 HP

by tnelson77 » Apr 19, 2020 9:02 am

You made yourself one heck of a nice looking rig, Ron!

Re: Glastron GT-150 - Hull mods to make it handle 150 HP

by Hippie459MN » Apr 18, 2020 9:22 am

alaskastreamin wrote: Apr 17, 2020 11:33 pm Got 78 mph in the 1 1/2 hr run.

Since then I swapped in a hydraulic jack plate and added 1 1/2” more setback. Trying to get the bow up a tad more.

[ Post made via iPhone ] Image
Not too bad what so ever, considering that boat was probably never meant to go much over 55 mph. LoL Very cool stuff!

Re: Glastron GT-150 - Hull mods to make it handle 150 HP

by alaskastreamin » Apr 17, 2020 11:33 pm

Thanks Kevin!! I’m pretty proud of that task.

With a decent 40* day I decided to get the old girl out for her maiden voyage. Caprice was in our friends 28’ boat tasking pictures and videos.
Got 78 mph in the 1 1/2 hr run.

Since then I swapped in a hydraulic jack plate and added 1 1/2” more setback. Trying to get the bow up a tad more.

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Re: Glastron GT-150 - Hull mods to make it handle 150 HP

by Hippie459MN » Feb 18, 2020 8:32 am

That cowl came out great! Very nice. I love this kind stuff. :)

Re: Glastron GT-150 - Hull mods to make it handle 150 HP

by alaskastreamin » Feb 18, 2020 12:32 am

with a foot throttle, I didn’t need a bulky side mount control box. Being a budget build, I decided to make a shifter.
I pulled the kill switch and mounted it in the side panel, put the key switch to the dash.

The paint had cured long enough to put on the retro decals.
They fit and look awesome!!

Waiting on the rigging tube bezels to finish the under splashwell rigging then install the gas tank.

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Re: Glastron GT-150 - Hull mods to make it handle 150 HP

by tnelson77 » Feb 08, 2020 6:16 pm

The cowl is turning out great, Ron!

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