alternatives to, engine tin Options

[ArtechnikA]

and then there's the guy who uses the gasoline-powered fan to cool his electric 914 :-) ...

[brant]

QUOTE (tat2dphreak @ Jul 26 2005, 12:47 PM)

I'd be afraid squirting water over a hot head would result in a busted head... since the heads aren't made to cool like that...

It works..
someone will probably chime in, but I've never heard of a single head problem

I did it for a year or two and know of a dozen other people that have done it also....

one ancedotal would be that you don't hear of cracked heads everytime it rains.....

It works good for about 15 minutes

brant

[Mueller]

QUOTE (BMartin914 @ Jul 26 2005, 12:17 PM)

QUOTE (bd1308 @ Jul 26 2005, 09:10 AM) somebody needs to make a water cooled setup for a stock 914 engine. There already is. It's called an inner tube filled with water in the trunk and a washer pump rigged up to spray water into the impeller. Cools nicely for about 15 minutes on continuous spray - so I've heard.

a few decent threads on this cooling method (with numbers) on the pelican site......I wouldn't worry about thermal shock unless you dumped a 5 gallon bucket of water on the heads all at once while at max. operating temp....

[brant]

regarding the electric fan Idea.
I should have gotten pictures.
all of the AJRS cars run a 16 or so inch electric fan straight down onto the motors..

usually they have a 2nd small battery that runs in total loss mode for this fan.

This has been an AJRS standard for about 8 years now.
He runs them on the -6 motors too.
In fact a week ago at an event one of the fastest cars he has ever built had one on the 3.3 twin plug, electromotive, high compression motor (probably a 350hp engine)

He also ducts a roof naca into the engine bay, so your getting some good ram air cooling too.

and none of his cars run engine tin in race trim.

In fact when I was there on saturday he was showing me a dyno sheet on a PCA GT class 912. It runs a type IV motor with 195hp and 180ft/lbs at the wheels (@5000 foot of altitude)

so its definitely doable, but its really a race only setup.
brant

[Cap'n Krusty]

QUOTE (jimkelly @ Jul 26 2005, 07:11 AM)

Looks like the votes LEAN toward keeping engine tin on and there is no alternative at this time to it. I had to ask. Now I know. (IMG:http://www.914world.com/bbs2/html/emoticons/driving.gif)

Well, jeeezzzz, you're no fun. You're SUPPOSED to argue with us and insist you're gonna go ahead anyway................................... The Cap'n, who has seen with hisveryowneyes the results of running an aircooled motor with no tin ..................

[bd1308]

warp the heads. blow a hole in the side of the case. Take pictures.

[sean_v8_914]

are you guys asleep? teh wind mills could be mounted to teh roof.
Dr Porsche already did a car with electric motor driven front hubs...in 1910. the batteries weighed in at a trim 5000 lbs

[bd1308]

i have pictures of that very car. cool indeed. I have a history of porsche book.