Mk7 vs 733 vs640D

ssdvc · 28 August 2007, 12:38

What is the difference between a MK7 and a 733 Hurricane? They look the same to me.

Also, any opinions on the 640D ? I located one, complete and on a very nice aluminum trailer. It needs a complete refirbishment and I am trying to find the owner. It has been sitting in one spot since fall of 2004.

Last question (for now). Can you upgrade these diesel powered boats. For instance, I think the 640 has a 140 hp engine in it. Can I upgrade it to a 210? Would it be a drop in installation ?

Thanks !

Stoo · 28 August 2007, 18:39

My first "Hurricane" was a Mk III Rigid Hull. It was built by the original Hurricane Marine before they were purchased by Zodiac. In my case, they bought a Mk III Grand Raid, and replaced the fabric bottom with a glass hull. That boat is about the same year (1988), so my guess is that's the same idea. My little boat was bombproof if that helps...

Regarding the 640D, there is a tour company in town here that has one. They don't use it much now because it's too small for their use, so the owners keep it for their toy boat. It's just a bit bigger than mine and a terrific boat. I don't think Hurricane makes a bad boat. It's just a question of getting the right size...

sunrider · 28 August 2007, 20:41

I had a Mark 7 that I resold before reconditioning it. Zodiac told me a similar story in regard to it being a legacy from Hurricane Marine, the company Zodiac acquired when it began it's pro/military RIB work in Canada. they also said they believed it to be a splashed Donzi hull. I don't know if that's true but I had the opportunity to see it sitting next to my 733 and the hull differences are significant. I never had the Mark 7 in the water so can't comment on performance.

I also had a 640 I reconditioned...I believe they are rated for either 130 or 140hp. Mine had a 130hp Volvo diesel. Here are pictures of both boats:

Stoo · 29 August 2007, 03:09

That's interesting about the Donzi hull. I also believe that the hulls were bought outside and married with the tubes. My Mk. III hull was completely sealed with no drain plug or anything. I understood it to be be foam filled.

That boat has changed hands many times since I had it and it's stil running strong...

OceanEco · 30 August 2007, 04:16

Mark 7's are not the nicest riding hull. They tend to push a lot of water. If you are looking at the old Seacoast Expeditions Mark 7 it was sold for $3000 CDN by the company and is not the greatest riding hull.

The 640's are a great boat are you set on diesel? I run a 640 with twin 140 suzuki 4 strokes on an outboard pod. The 640 with outboard extension is rated for 180hp.

Stoo · 02 September 2007, 23:32

Quote:

Originally Posted by OceanEco

I run a 640 with twin 140 suzuki 4 strokes on an outboard pod. The 640 with outboard extension is rated for 180hp.

140 + 140 = 280

OceanEco · 03 September 2007, 02:52

Yup I talked with hurricane and it seemed like a weight issue not a hp issue the 90hp yamaha 4 strokes weigh pretty much the same as the suzuki 140 4 strokes. the suzuki 140 is not a true 140hp either more like 125-130hp. Excellent engine in all respects super good block.

While i was at hurricane they had a 733 with twin 200's on it and 733's are rated for twin 150hp.