kkswow12

is this dangerous, i am sure it is not good, but am wondering how not good it is, this is actually a picture of a fan from another 964 offered to me to replace my fan, since it has a hairline crack in just about the same place, the base of one of the fan blades...hard to see, but this one has 2 cracks, out of the car, i can hold it up by the small pin and strike it and it has a solid sounding ring, though i am sure that is not the baseline test to see if it is ok...anyway...i have looked at 2 fans now and both are cracked...is this common? fixable? dangerous? of course i am not thrilled at the cost of a new one, somewhere north of €500, so, i will appreciate hearing what my possible courses of action are, oh, it runs fine and before i knew it was there i drove her not hard, but had 'er revved to around 4500, now i barely break out of idle until i resolve... thanks as always for input that is to come, and when i figure this out i get to powder coat the fan, and as of this date its a toss up between factory silver and black and pale yellow, the car is black/black...

ok, the first larger pic is the fan in my car and is the lesser of the 2 cracks, the second smaller pic is my bud's fan out of his car and actually has a much larger crack that goes ever-so-slightly across the body and on to a second fan blade...ænyway, thoughts?

Jacke2c

Somewhere on here are pictures of failed fans.... and the damage they do. I would feel fortunate to find something like this before it failed.

FeralComprehension

Not common, but not unknown. Not fixable so far as I know; they're magnesium, so unless you know UltraWelder personally...

Dangerous, yes, in the sense that it could come apart at speed and send big chunks of metal in a thousand directions. You're not likely to be hurt personally, but you'd be stranded and you may wind up needing a new decklid.

FlyinTomato

damn. we are on the same boat. let's start a group buy

Rocket Rob

I've replaced one of the fans on my cars. I saw a couple cracks starting. I replaced with a new one just to be safe. New fans come with a new bearing which is good. I had mine powder coated while it was new.

LouZ

Looks like I lost a blade, it took out a couple more, then the entire fan snapped the shaft clean!

The dis colored metal was where the crack proprigated, the shiny metal is the snapped blade.

I didn't damage the hood from flying shards, but it still cost me extra for a new altinator, belts and belt sensor.

kkswow12

i thought so, out it comes...! pre-next start...and as always, many thanks...!

Andy Roe

Yep - replace it. When mine went it did cause some damage - https://rennlist.com/forums/964-foru...tergrated.html

911Jetta

It's always better to take precaution in a situation like this. Those cracks look slightly worse than mine, so you might be in a different situ. (legal disclaimer)

That said...

from a post in 2012

I have a couple small cracks on my fan also. My mechanic marked the ends of the cracks with a permanent marker so I can keep track and see if the crack spreads. The mechanic wasn't worried and the crack hasn't spread.

Replace the fan if you are at all worried about it breaking!

g60pops

Any chance of the part number for the fan?

Rocket Rob

The part number is on PET page 105-00 #9.

964-106-015-02 (1992 and earlier)
964-106-015-40 (1993+)

kkswow12

i havenät heard of these kinds of failures in g modells, but then , havenät been looking, is there a parallel universe here? also magnesium?, anyway, i am buying a new one...canät trust used product as paint probably hides the early stages of this disease, so, new=peace of mind....again...been looking at related threads and the downside to failure is way deep...

dhc905

I was freaking out about mine as well. I bought a new fan and hub (pricey!) and then realized that I was actually looking at a casting line, not a crack. So my new fan and hub are sitting in my garage looking pretty (got powdercoated too!)

It is a nice paperweight.

kkswow12

nice reserve part, wanna sell it?

RallyeChris

I priced a good used fan, plus new bearing - there was maybe $200 difference between that and a new fan (which comes with new bearing). So, I went with a new fan. Looks pretty, too!