Parnelli Joneser

I have a friend who is an engineer in addition to being an all around gearhead. When he stopped by and saw my "spare" 16-valve engine sitting in the garage he mentioned how easily it would fit in the '74 Kona jet boat he has. (I don't know what you call that style of flat, generally V-8 powered era of boats, I always have called them Burt Renyolds boats. That's what he (stunt driver-Hal Needham) jumped in "Gator" or whatever movie that was that made such an impression on me when I was like 10)
So my question is whether anyone has put a Porsche V-8 in a boat. What type of propulsion unit was used? How did it perform?
There's no risk of my engine going in his boat, mind you. Just curious...

SharkSkin

I imagine the propulsion would be the easy part... If you used an auto donor car you could probably just graft the torque tube to the prop shaft and have direct drive. I'd be far more worried about sucking cold water into the block. Porsche went to great lengths to see that it heated up evenly, even to the extent of designing the thermostat so that it works "backwards" compared to every other car I've encountered. Sounds like an interesting project though... Have him send pics if he does it.

Nicole

I don't know who, but someone has created the below. I think Mark Anderson might know more about it...

Nicole

Oh, one more thing... I think you'd have to design a cooling system that would not pump any sea or salt water through the engine, if you want to avoid corrosion inside the aluminum block.

John Veninger

Mark Anderson has a marine kit sitting on the shelf.

hacker-pschorr

I can only imagine twin supercharged 928 engines with wide open headers would sound like. I've talked to my shop a few times about this idea. He has a couple 928 engines lying around. No salt water fears in Lake Michigan!

If all goes well, I'm hoping to drop a 16V 928 motor into a replica cobra. "All Goes Well" meaning one full year of driving both Porsche's with no major breakdowns.

Steve J.

928 marine engine-

Parnelli Joneser

Wow, who'da thunk it. Glad I didn't tell my pal about this forum or mention Rennlist...

saxapeeel

I remember reading somewhere out on the internet that some people have put 2 928 engines on thier boat.

V-Fib

There was a boat on Ebay a year..maybe two ago that had been fitted with 928 engines. Scarab? Donzi? I don't remember, but there was a post or two here with pics, IIRC.



Anthony Tate
79/928 Silver Metallic

FSAEracer03

No kidding... what brand? I'm a cobra freak...I work at a racecar shop in VA that specializes in cobra's, BDM (Bryan Dobyns Motorsports)

In fact, here's a photo of the car both Bryan and I built last year that e took on to win the 2003 FFR-NASA championship in (pic from the race).

FSAEracer03

and here's a picture of it before we fully completed it... taken right after my first cobra drive ...sorry to hijack, by the way, just thought I'd share!

hacker-pschorr

FSA - I'd do a factory five. Only kit that I know of that offers an SCCA approved chassis for racing. If I build a car, do 95% of all the work, seams like a perfect track car to me. Nothing I can't fix except body work!

This is a 2005 - 2006 planned project. The supercharged 928 project will eat up all of this year. My 944S and Mercedes 380SEC rebuilds will be 2004 - 2005. What can I say, I like to stay busy.

Sab

I beleive the marinized engines went into these boats...

Ian928

I was offered a 78 Euro engine from a guy who had intended it for his boat but never got around to do it. The place he bought it from had done the marinization process a few times before with good experiences. They used the low compression engines with one big turbo.