Porsche-O-Phile

Hey, anyone know offhand what the size of the alternator cooling duct is? I picked up a 2-1/2" dia. duct yesterday (generic air duct) to replace my mashed/mangled/crushed/fraying/grease-saturated/chewed-up/scorched/discombobulated/f-ed up/deteriorating/failing old one yesterday. I brought the old duct into the store and matched it up as closely as I could with the assortment of sizes and it looks like a 2-1/2" will work, but I just haven't crawled under there yet to install it. Anyone done this? Just want to make sure it's likely to fit before I take it out of the package and render it non-returnable. Thanks.

ehall

I just measured the stock one and it was 6 inches across. (outside diam) Hose connection is 2 1/4.

Unless I'm thinking of a diff. part (I'm talking about the b;ack think on back of the Alt.)

z3bra

It's 60 mm on both the alternator and the bumper end. 2.36 inches and change. 2 1/4 would be ideal as long as it's relatively flexible, but there isn't such a critter in any good hose materials.

Worst case use JB weld or something and build up the outside of the ducts enough that you can get the 2 1/2" hose to crimp down decently. It may not be pretty but it'l work fine and give you the option of using pretty much any kind of duct hose if you want to. Seems like just about everything is available in 2 1/2" hose.

Porsche-O-Phile

Okay yea - I might need to add a little PVC sleeve or something but I'll try it. I actually noticed the clamp I took off the stock hose was a TAD smaller than the 2-1/2" one, but it still might work. If not I'll look for some way to build up a sleeve / adaptor ring. I actually looked for 2-1/4" dia. hose but no dice.

emwporsche

My duct dissappeared.

Porsche-O-Phile

Do you leave the body pans & batwing on or off?

Jaak Lepson

IIRC when I replaced mine on a hoist, we took off the belly pan.

Porsche-O-Phile

Well I have mine off, I was just wondering for emwporsche how he lost the duct if the pans were on. . . IIRC the duct is protected from below by the batwing and front portion of the pan.

Fen

I used a piece of brake cooling duct to replace mine. It happened to be lying around in my specialist's workshop but it was the brown stuff Demon Tweeks sell in the UK. It fitted so well I only put a hose clamp on the body end.

http://www.demon-tweeks.co.uk/catalo...ODE=SAMSFD-025

gstreev

Mine feel off when trying to charge my A/C, its very hard to get at the clamp and I haven't
been able to get it back on.

emwporsche

no I work on my car so often that I keep it off.

once everything gets smoothed out I will add it back on.

Crazy Eddie

I believe this is what you are looking for ...
http://www.mcmaster.com/nav/enter.as...pe=&catnum=111
javascript:TargetLink('TR526','tr','PT5261','53335K12');
Part # 53335K12
If you do a search you will see who discovered this hose
He did it and it worked
regards
Ed

streckfu's

That's the ticket.

meanmaroon951

i know the cowl that goes on the altenator is a SON OF A BI*TCH to get off and on , with the a/c compressor on. Does anyone know if this thing really helps that much

streckfu's

It does add life to you alternator, especially if you ever visit the track.