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Thats interesting! Looks like you are making an adapter to mount the fan from its 4 posts to the alternator shaft. Then you cut a hole where it used to mount on the crankshaft.
This means air now enters from the back. Direction of rotation is therefore still the same.
Nice idea!
Staying Aircooled is so much nicer.
Do'nt assume anything- (While doing fault-finding).
"My other ride is your SeatCover! & She loves it!" Sometimes you'r the statue, sometimes your the pigeon. "Only the dead go free..." Roger Waters. "You do not understand the power of the DarkSide" Darth Vader.
There are a few reasons for doing a fan for a type four conversion this way.
Using the type four fan means you match vws design more closely.
fans with narrow blades like the type four seems to be more efficient.
I can now run the fan at crank speed.
the fan doesnt have to accelerate faster than the engine like a type one.
the fan being a casting does not need to be welded
it is lighter than a beetle fan.
There is some disadvantages though
it is unproven!
it takes some work to build
it will need a completely new fan housing
I am currently designing a completely new type of conversion.
Why would you ask since the original IMPI conversion works extremely well.....
It is simple
I can.
The original Impi is a bit bulky and with the current trends towards throttle bodies and injectors there is less space in engine compartments.
My vision is to make this conversion as simple and easy to fit that a 6 year old can do it.
Who cares how it's done in California?
(018) 473-0186
Lets see Jake the snake try to keep up with his DTM.... So yesterdays technology...
"My other ride is your SeatCover! & She loves it!" Sometimes you'r the statue, sometimes your the pigeon. "Only the dead go free..." Roger Waters. "You do not understand the power of the DarkSide" Darth Vader.
Armand, what can be done about the reported cavatation the type 4 fan experiences around 4500 RPM?
For a street engine that sees brief full throttle blasts it might not be an issue, but if you can do any high RPM crusing (or racing) it might be worth noting:
Class 11 streeter wrote:Geez..........you guys...........such venom.
Armand, what can be done about the reported cavatation the type 4 fan experiences around 4500 RPM?
For a street engine that sees brief full throttle blasts it might not be an issue, but if you can do any high RPM crusing (or racing) it might be worth noting: