Porsche Style Dog House. 993 911 Fan/Alternator

Mine is a few days away from being finished. Greg at Vintage Motors did an amazing job! 2332cc with shroud.

@Ventura356: generally, the alternator stand is part of the shroud package. If you can figure out who made the shroud, you should be able to track down the stand.

@EnerG_CEO— bold choices there. Not my jam, friend, but you do you. I do, however, love the paint -- it looks like mercury. What’s the color?

I agree, Stan it's a little out there for me as well.  But as someone very wise once said, it's a big tent

Bergmann shroud?

@Ventura356 posted:

Anybody have experience with one of these conversions?

The kit I received was from Greg at Vintage, albeit in 2001. It uses an OE fan and ring, I got one locally and had the 55 amp alternator converted to a "one wire". Basically, bolt a Japanese regulator to the back and run the field wires inside. There are actually two external wires, the main charge wire and the idiot light wire(which must be connected for the alternator to charge).

I use a JayCee dry sump pulley(5") with a custom trigger wheel machined and bolted to the back side for a hidden crank trigger. The alternator uses a stock v-belt pulley, which allows some slippage so things don't get broken.

Ignore the pulley in the second picture, that setup has been replaced, you can see the current pulley in the first photo. This photo is of a very DIRTY engine, sorry about that.

The fan ring was machined to a smaller diameter to fit the shroud, and also the base. The base is a custom billet aluminum piece that bolts to the alt/gen stand AND the fuel pump opening. The oil filler/breather was a hokey POS, so I plugged that.

I have EFI now along with crankfire/distributorless ignition, so the distributor hole is no longer needed. After pulling the drive and making a custom pipe adapter, the distributor hole is now my main crankcase breather opening.

I also have a dry sump system so oil goes in the tank, not the engine.

Head temps varied by 20-40 degrees between cylinders also. I took a later 911SC(or maybe 964?) alternator backside vane and modified it to get air diverted to cylinders 3 and 4. This got the temps within 10 degrees for all 4.

@barncobob posted:

Bergmann shroud?

Bernie doesn't use a 911 fan/alternator. His design uses a machined chevy alternator inside of his own cast fan. Years ago, I think he used a Golf alternator.

@Stan Galat posted:

@Ventura356: generally, the alternator stand is part of the shroud package. If you can figure out who made the shroud, you should be able to track down the stand.

@EnerG_CEO— bold choices there. Not my jam, friend, but you do you. I do, however, love the paint -- it looks like mercury. What’s the color?

haha I can definitely respect that! That bright acid green is my favorite color and am a fan of bolder colors (my other "fun car is a 2017 v10 + r8 spyder... wrapped satin hot pink ) 100% understand it is not for everyone!

The exterior color i stole from the 2017 GT3RS GT Silver Metallic, which i love the way it turned out. Cant wait to see once it all finished up and detailed!

  I wanted a Bernie Bergman fan/shroud assy. really bad until I read up on it a little. I got the opinion that the concept was to blow  the maximum amount of air possible over the cylinders and heads in the hope that it will be enough to solve any overheating issues. Plus the ability to use it as a leaf blower when you want your driveway cleaned !

They really look fantastic and fit in such that there is room up the yin-yang to easily fine tune the carbs. These are real plus's. Including the high output alt. as well.....Bruce

You're right. Any 911 style fan shroud will give better access to the carbs, with one caveat: you need the CB Performance Space Saver manifolds, which reverse the carbs and put all the adjustments on the inside.

If you don't reverse the carbs, all that extra room helps, but not as much.

I love Speedsters, but accessing Weber idle jets and screws are a real b!tch on them. That was always the difficulty on the dozens I've worked on.

On my Spyder, the reversed carbs helped too, the Vintage Spyder 2" round tube frame runs right by the carbs.

You won't have to worry with your single throttle body Subaru, Bruce.

Danny....I used the space saver manifolds in my Speedster just so I could get at my idle jets easier.  That got rid of some of the misery.

Yup....I'm looking forward to having one small, single piece of linkage to connect up to that 2.5" throat in the TB.  A simple air cleaner too !.............Bruce