bertram31.com

I’m looking for the original 220degree mast light that is on the front of the bridge, anyone know of one for sale?

Ok I have twin 165 straight six’s, I was running aluminum 3blade 14.5x17 black diamond getting 1.6mpg at 2850rpm doing 21knots. I recently put counter rotation lower unit on and now run 15x16 solas 4blade which have been terrible props. I ordered solas stainless 14.25x17 3blade which as recommended ...

Yeah so we here the 425hp was the problem child. Cat changed the block design for the 435hp, but if boat not propped right then issues.from what I’ve read on the internet people seem happy with the 435. We would just like to hear from anyone who actually has the step up which hasn’t been the easiest...

Anyone have any info on the 435hp cats(3208)? My father is looking at one and we would like to hear from someone who has one. We do a lot of tuna fishing on his 31 and are not sure if the 37 can make the 80 mile run one way with the fuel capacity. Any info would be greatly appreciated.

Boat was just put in so yeah bottom is clean. I’m lookinh to get stainless wheels just would like some information from someone who has them.

If I go back to 3 blades it has to stainless, they don’t make a counter rotation 3blade.
So you run 28mph at 3000rpms?

I’m just looking for 1-2knots at cruise and maybe alittle fuel economy. You don’t think I will see any improvements? I always thought these motors had a lot of tourque.

Not sure how much help I will get but I have a 1973 25 Bertram flybridge with twin straight 6 165 mercrusiers. I currently have 4blade aluminum props 15x16 with counter rotation. Wot is port 3950 and starboard 4110 @28knots. So I’m looking to put stainless wheels on but was looking for anyone who ha...