looking at a Igso480

Aircraft powered airboat discussion.
Post Reply
User avatar
smokster
Southern Airboat Member
Posts: 135
Joined: Sat Jul 28, 2007 8:38 pm
Location: Interlachen FL.

looking at a Igso480

Post by smokster » Sat Mar 02, 2019 4:34 pm

im looking at a boat with an Igso480 and was wondering why you dont see many of these motors and if parts are hard to come by. i would love some opinions on how they hold up and some pros and cons. this motor has 126 hours and built by wally more. thanks in advance

Blownaway540
Site Supporter - IV
Site Supporter - IV
Posts: 165
Joined: Fri Feb 11, 2011 7:16 pm
Location: East Orlando/Hatchineha Estates

Re: looking at a Igso480

Post by Blownaway540 » Sat Mar 02, 2019 5:08 pm

I have a IGSO minus the gear drive, they suck some fuel but are a tractor. Never, I mean never have to get off and push and pull. I got to old and lazy for that. Take care of the engine, don't let the CHT get to hot and they will last you. You get back on green/dry and run for miles you will burn it down. Mark
IGSO 0540 (W/out IG) built by the late, great, Dick Hoffman, 13 ft. Alumitech. Member - CRA, KRVSA

SuprchgedPalmBeach
Southern Airboat Member
Posts: 33
Joined: Fri Apr 27, 2018 4:13 pm

Re: looking at a Igso480

Post by SuprchgedPalmBeach » Mon Mar 04, 2019 12:03 pm

The power is uncomparable..it does require a cooling shroud with correct design, meaning not the ones that are 2" above the cylinders with the cute louvers. Letting the cylinders get hot will end this motor. The shroud goes with prop sizing to pull ample amounts of air through the cylinders, i run a 82" 3-blade JX with a shroud with 11" spacing at rear. Also if you run it lean will also run the cylinders hot, i run a holley AED 850 with (2) carter 4600 fuel pumps (1) pump per side of carb (double pumper), pulling through a Racor S3232. Solid, powerful motors but setup is critical.
15' 6" Palm Beach Hull, GSO-480, 82" 3-Blade JX Series

User avatar
smokster
Southern Airboat Member
Posts: 135
Joined: Sat Jul 28, 2007 8:38 pm
Location: Interlachen FL.

Re: looking at a Igso480

Post by smokster » Tue Mar 05, 2019 10:59 am

SuprchgedPalmBeach wrote:The power is uncomparable..it does require a cooling shroud with correct design, meaning not the ones that are 2" above the cylinders with the cute louvers. Letting the cylinders get hot will end this motor. The shroud goes with prop sizing to pull ample amounts of air through the cylinders, i run a 82" 3-blade JX with a shroud with 11" spacing at rear. Also if you run it lean will also run the cylinders hot, i run a holley AED 850 with (2) carter 4600 fuel pumps (1) pump per side of carb (double pumper), pulling through a Racor S3232. Solid, powerful motors but setup is critical.
thats some great information, i sure would like to see a picture of your shroud. thanks

SuprchgedPalmBeach
Southern Airboat Member
Posts: 33
Joined: Fri Apr 27, 2018 4:13 pm

Re: looking at a Igso480

Post by SuprchgedPalmBeach » Tue Mar 05, 2019 12:04 pm

Sent you a PM
15' 6" Palm Beach Hull, GSO-480, 82" 3-Blade JX Series

User avatar
nunook
Southern Airboat Member
Posts: 130
Joined: Wed Oct 22, 2008 10:37 pm
Location: Loxahatchee

Re: looking at a Igso480

Post by nunook » Wed Mar 06, 2019 5:29 pm

Gary Barber@outlaw has the parts for the GSO480. I have a GSO 480 I agree they are a work horse, with the right prop and gear reduction mine is pretty good on fuel as long as I'm just cruising. If I lay into it with the twin Aircraft Carbs it will drink the fuel
2006 Floral City 14' Deckover Lycoming GSO-480

Post Reply

Return to “Aircraft Power Only”