Billylll
Guru
- Joined
- Mar 12, 2011
- Messages
- 938
- Location
- USA
- Vessel Name
- WIRELESS ONE
- Vessel Make
- 36 Gulstar MarkII
I have a Gulfstar 36' 1976 Mark II trawler she is powered by a pair of Perkins 4-154 engines that appear to be healthy, strong and running well. Can anyone help me determine the original size of the 3 blade props used on this vessel? The boat appears to be slightly under propped this is actually good not bad in my opinion. I would like to know the size and pitch of the original wheels?
I'm also thinking about putting a pair of 4 blade wheels on her. Has anyone done this and if so what size and pitch were the wheels? The motors with the current props were run at 3300 rpms for about 5 minutes no smoke was observed and the boat ran without vibration. Now, I have not photo Tach'ed the engines to see if the current Tachs are accurate. This needs to be done.
Another question what is the original size of the shafts? The surveyor said they are 1 and 3/8ths. The transmissions are tagged Borgs with a 2.96 to 1 gear ratio. Any input would be greatly appreciated.
The hull ID# is GFS3623211 75.
Thanks,
Bill Lentz
1976 Gulstar 36 trawler
Soon to be renamed Wireless Too.
I'm also thinking about putting a pair of 4 blade wheels on her. Has anyone done this and if so what size and pitch were the wheels? The motors with the current props were run at 3300 rpms for about 5 minutes no smoke was observed and the boat ran without vibration. Now, I have not photo Tach'ed the engines to see if the current Tachs are accurate. This needs to be done.
Another question what is the original size of the shafts? The surveyor said they are 1 and 3/8ths. The transmissions are tagged Borgs with a 2.96 to 1 gear ratio. Any input would be greatly appreciated.
The hull ID# is GFS3623211 75.
Thanks,
Bill Lentz
1976 Gulstar 36 trawler
Soon to be renamed Wireless Too.
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