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oldmanwintersret · Joined: 06 Apr 2009 Posts: 133 Location: San Antonio, Texas

Forgive me, I am a complete noob to the 924 Porsche World. How important is the air duct to the alternator? Is this something that I should be concerned with as a priority in bringing my 924 up to decent mechanical reliabilty? I feel a bit silly in asking this but I am sure the duct work was there for a reason.

BionicBalls · Joined: 05 Jan 2009 Posts: 642 Location: Charlotte, NC

nah its not important. its supposed to prolong the alternator life, but whatever its definitely not important for getting it running.
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1980 924 NA
1982 931

Nobbi · Joined: 24 Aug 2006 Posts: 1396 Location: Germany

In a hot clima-state like Texas it will be important. Here in germany were i live it is not necessary.I am driving without it since years, no problem.

_________________
NA 924 - april/1977- 4-speed-audi gearbox.
500.000 km with fun.....and new toy:Porsche 944 S2 Cabriolet.Other car Daimler c-class cabby,brandnew..Plus : DEUTZ 4005 tractor Built 1967

Raceboy · Joined: 01 Mar 2004 Posts: 2327 Location: Estonia, Europe

Yeah, what Nobbi says applies to hot climate but even though we don't have extreme hot all the time (in summer around 35-36C max), it's good to have it because on NA alternator sits very low and it catches a lot of dirt. If a car doesn't have it, it's not VITAL to get one, but recommended.
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'83 924 2.6 16v Turbo, 470hp
'67 911 2.4S hotrod
'90 944 S2 Cabriolet
'78 924 Carrera GT replica
'84 928 S, sold
'91 944 S2, sold
'82 924S/931 "Gulf", sold

'84 924, turbocharged, sold.
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Nobbi · Joined: 24 Aug 2006 Posts: 1396 Location: Germany

I am driving with that huge under-engine-cover,so there isnt much dirt coming toward the alternator.Never had a problem in 20 years of ownership. But i am driving 99 % on well paved roads.....dont know about texas. So it`s up to you.

_________________
NA 924 - april/1977- 4-speed-audi gearbox.
500.000 km with fun.....and new toy:Porsche 944 S2 Cabriolet.Other car Daimler c-class cabby,brandnew..Plus : DEUTZ 4005 tractor Built 1967

924guy · Posted: Mon Apr 20, 2009 6:56 pm Post subject:

the alt on the n/a is right in front of the exhaust manifold, alot of heat there to reduce the functional life of the alt, fresh air ducting certainly doesnt hurt, and replacement tubing is cheap at a hardware store. so while id agree its not a critical component, it does serve an important function and is worth attending too, plus its a cheap and easy fix...
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Eric
78 924
82 931 SE "smokey"
99' VehiCross
Y2K Honda Insight
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oldmanwintersret · Joined: 06 Apr 2009 Posts: 133 Location: San Antonio, Texas

Thanks guys. On the basis of your replies I will place it on the lower portion of the to-do list. Don't have the splash guard on it either so there should be sufficient air flow for the time being. There is a long list of repairs to do. Just bought it non-running two months ago and it finally moved on it's own power the other day with a complete fuel system cleaning including the tank and a new Timing belt.