Old School family.....Cool!

**3rd Gen** · 07-15-2016, 07:46 AM

So my older Brother says you want to go on a road trip to Canada...Told him could not make it he says fine Ill see you when I get back!! I said what you getting??...He says you'll see when I get back...

Should have went with him

14 ft Desilva with a 75H I don't know the history of the rig yet...COOOL RIG!

**specboatops** · 07-15-2016, 08:00 AM

Awesome - love the old school stuff !!

**Bob V** · 07-15-2016, 08:14 AM

What would the straight line speed be on a good day ?

**largecar91** · 07-15-2016, 10:00 AM

That is a beautiful boat and motor but it is not a 75H.

**3rd Gen** · 07-15-2016, 10:30 AM

Originally Posted by largecar91

That is a beautiful boat and motor but it is not a 75H.

I don't have the specifics(serial numbers ect ect) He called me up and said I'm back it has the 75H face plate ect ect....It is a beautiful boat and motor I'll get some details on it next trip...Thanks

**3rd Gen** · 07-15-2016, 10:32 AM

Originally Posted by Bob V

What would the straight line speed be on a good day ?

Good Question??...

**2us70** · 07-15-2016, 12:18 PM

Would the stacks disqualify it as a 75H? Looks like a vintage F Outboard Hydro. Alky burner.

**2us70** · 07-15-2016, 12:23 PM

Was there ever an F Stock class, either hydro or runabout? The only F class boats I ever saw were OPC and Outboard(alky).

**largecar91** · 07-15-2016, 12:30 PM

Originally Posted by 2us70

Would the stacks disqualify it as a 75H? Looks like a vintage F Outboard Hydro. Alky burner.

It's not the correct mid or lower for a 75H. It is a very cool motor!!!

**3rd Gen** · 07-15-2016, 01:29 PM

Originally Posted by 2us70

Was there ever an F Stock class, either hydro or runabout? The only F class boats I ever saw were OPC and Outboard(alky).

?? Great question? I love a hydro ! Always wanted a set of plans for a sit down F hydro to run a T2X on ! Someday!

**bernie** · 07-15-2016, 08:12 PM

[What would the straight line speed be on a good day ?

Running on pump gas, M800/Superspeedmaster, 13' A&H hydro - saw 86 GPS.

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**Mark75H** · 07-15-2016, 08:21 PM

There originally was an F Stock class at the beginning of Stock racing. It lasted until about 1959 or 60. 75H specs were submitted to both Stock and Alky racing committees for approval. Not sure if Stock ever actually considered the 75H. In the early 1950's there were a few F entries in some of the prominent marathons ... but C's and D's usually beat them handily.

There is no Mark75H faceplate; 75H's used a stock 1958 faceplate. There were a few counterfeit "75H" faceplates made by altering 75A plates to appear to say 75H. One guy told me he did this before he learned that the 75H's used the regular front. In truth, the forgeries should be destroyed or at very least have a note painted on the inside to the fact that they are fake.

The foot is a nice Merc Speedmaster and the mid section is a very well done home made piece.

Pretty sure you will find the serial number is significantly out of the 75H serial number group, the compression is much lower than a 75H and it has none of the 3 possible 75H carbs. The pipes are Lon Stevens pipes from California.

Top speed for this motor on a hydro like this is probably about 75mph.

An alky compression 60 or 66 with Stevens or Fuschlin porting and good alky carbs and those pipes would go about 90mph on a more modern hydro. A modern F/850 runabout would only go a few mph slower.

**FUJIMO** · 07-15-2016, 08:28 PM

**FUJIMO** · 07-15-2016, 08:30 PM

**Mark75H** · 07-15-2016, 08:48 PM

Originally Posted by FUJIMO

Len Melly in the UK. Rumor was that if anyone in the UK would buy a 75H and race it, Carl would give them the exclusive Merc distributorship.

M&M took them up on it.