Any WAGs on an unstamped case?

Aren't CB cases cast with their exclusive logo? Maybe that will give some info.

1155 White Rhino Aluminum Super Case (STD Bore) 9.5mm Deck (not drilled for head studs) (cbperformance.com)

As much time as I’ve spent underneath it, I’m pretty sure I would have noticed this. But I’ll check.

If it is a VW case, it should be stamped on the side of the sump, the side the thermostat is on. On a Spyder, this is the driver's side.

It is VERY common to not have a serial number stamped below the generator stand, replacement cases don't get stamped. Mine has a Jake Raby(RAT) and a number.

An AH trans case is perfect for a Spyder: it's a 1968 to 1972 dual side cover case, just before VW switched to the single side cover case for rear-wheel drive only.

If the engine case is from a Type 3 (pancake cooled), the engine # is located on the top of the engine case - along case seam by the oil cooler? Probably hidden by the upright shroud now.

It's definitely a single relief type I case.

@DannyP posted:

If it is a VW case, it should be stamped on the side of the sump, the side the thermostat is on. On a Spyder, this is the driver's side.

It is VERY common to not have a serial number stamped below the generator stand, replacement cases don't get stamped. Mine has a Jake Raby(RAT) and a number.

An AH trans case is perfect for a Spyder: it's a 1968 to 1972 dual side cover case, just before VW switched to the single side cover case for rear-wheel drive only.

Thanks Danny, I'll look though my pics again. I'm 90% certain I took a picture of it before I ordered some parts that had single/double relief compatibility. I'm sure I missed it because I was focused on pics of the generator stand.

ps: IIRC, it's not stamped like the engine number is,  it's cast into the case.

I must be misremembering. Can't find it anywhere. I'm going to have to go down and crawl under it.

If you want to find out if it's magnesium, use a box cutter to slice off a small sliver from an inconspicuous area and put a flame to it. If it flares up, it's magnesium, if not, it's aluminum.

BTW, do this outside.

Dave, look at the sump. And you're right, the info is cast into the sump, I misspoke before. AS41 means dual-relief magnesium.

So I finally got around to getting under the Spyder today and here’s what I found: AS21 single relief Brazilian case. Part # 000 101 14. According to the info I found, the “000” means it’s a replacement case vs the “043” in Danny’s pic.

The thing I don’t understand is that AS21 is supposed to be the later magnesium case for the FI motors, but it’s a single relief case.

Sorry my accelerator cable is in the way but the case reads (L-R) 2BR over 22, VW/Audi logo, Brazil over 000 101 14, AS 21

Oh, BTW, I noticed it already has the TypeIII “Super Cooling” tins in place on the bottom of the cylinders.

I was a little off on my original estimate for the ramps.

The good news, while there’s no way to get them under the front, there’s plenty of room to back into them for bottom access ie oil change.

@dlearl476 wrote- "I was a little off on my original estimate for the ramps. "

Thanks for the early morning laugh!

And yes, it is a magnesium case.  Al