Fan housing cracks

[jclporsche]

R&R'ing the alternator in my 88 Carrera and found these cracks in the housing. It feels solid but looks bad with cracks in 3 of the 4 louvers. Having trouble finding one online. Pelican lists it as no longer available. Can it be welded? Any advice much appreciated. JL

[Ken911]

it will need replaced it's magnesium cant weld it. Vertex sells aluminum replacements not sure if pelican carries those or not. the one on my carrera did that, i found another one on e bay for about $40.00 so i didnt have to fork out for the aluminum one.

[Zef]

If it's only the ring...but the diffuser vanes are cracked...total reject it...

[haycait911]

if interested I have one in the classifieds. Don..
FS- 245 mm 11-blade fan and housing

[David]

The magnesium can be welded, but I don't recommend it since it will probably crack again in short order. I went with a Vertex housing.

[jclporsche]

Originally Posted by haycait911

if interested I have one in the classifieds. Don..

Not sure if yours will fit. Mine is #930.106.102.4R
JL

[haycait911]

my part # is 930 106 102 0R. anyone know the difference? will sell separately.

[masraum]

My old '88 had the same cracks, but not quite as bad. I guess I got lucky and was able to buy the Porsche part right before they stopped selling them.

You'll definitely want to replace that part.

[jclporsche]

Originally Posted by haycait911

my part # is 930 106 102 0R. anyone know the difference? will sell separately.

I saw some good photos on line, looks like one important difference between mine and one I saw was the thickness of the flange where the alternator bolts on. I placed a straight edge across the fan opening and measured from that surface to the alternator mounting flange (bore). Mine is about 107mm deep. That depth locates the belt pulley, so it has to be correct. What does yours measure? How much you asking for it? Thanks, JL

[jclporsche]

Originally Posted by Zef

If it's only the ring...but the diffuser vanes are cracked...total reject it...

It' not going back in. I can just see my alternator & fan taking flight in my engine compartment at 6800rpm. nuh! It's not going to happen.
Zef, your Targa is beutiful.

[haycait911]

to the face furthest from the fan housing lip, I get 113mm. and the nearest face of the flange, I get 95mm. sorry. Don.

I Got A Used One From Tre When I Notice That Mine Had A Crack. Very Reasonable And Cheaper Than New. Good Luck.

[jclporsche]

Originally Posted by haycait911

to the face furthest from the fan housing lip, I get 113mm. and the nearest face of the flange, I get 95mm. sorry. Don.

I might be able to make it work. How much do you want for it?

Already sold, anyone else have one?

[jclporsche]

I think the cracking was caused (or at least contributed to) by the metal strap that holds the housing to the case not being completely tight. I just remember that when I started removing the strap screw, it was easy to turn (not torqued down). And the bottom outside surface of the housing where it sets on the engine case saddle is very worn - looks like from constant movement or vibration against the case.

Go check yours before things get worn!

[jclporsche]

Finally got it finished! Went with powder coat on the new housing and the old fan. Didn't have any clearance issues with coating. I did have the powder coater mask off the alternator mounting bore and the steel center of the fan. Here is what it cost me:
Alternator rebuilt $156
New fan housing $360
Pwdr coat $125
Total $641

[Zef]

Cooool and sweeeet....welcome back on the road...!

[deshetlr]

Where did you finally find one. Looks great!

[jclporsche]

Vertex, only source I could find.

Thanks
JL

[masraum]

Cool, glad you were able to get back on the road. I'm amazed that Porsche quit making/selling that part since it definitely seems to eventually go the way of the dodo.

[RickM]

JCL, Did you have fitment issues with the Vertex piece? Others here stated the early units were poorly cast and had to either modify or return for another piece.