924Board.org

mister904 · Joined: 06 Sep 2004 Posts: 2 Location: Hampshire UK

Does anyone know if a camshaft for the 2 litre VW engine is compatible with the 924 ? it being of VW/Audi origin ?

5150 · Posted: Mon Sep 06, 2004 6:02 pm Post subject:

Could be wrong, but i'm pretty sure they're different mate, think the 924 camshaft is only used on the 924 hence the ludicrous pricetag on them new.
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Mars Red '78 Euro 924 n/a
http://www.cardomain.com/id/5150_uk

Graphite? Grey Metallic '85 (late model) 944 2.5

There are two kinds of pedestrians: the quick and the dead.

wdb · Joined: 02 Nov 2002 Posts: 2024

I'd be willing to bet the 924 uses a vw cam , since the 924 has a mechanical lifter , it would probably be a vw with mech lifters . see link to narrow down the posiibilities . but the only way to know for sure is to get 1 and see if it fits . maybe a breaker will sell you a worn 1 for cheap to test .

http://www.powerpro2000.com/lb_volkswagon.htm

5150 · Posted: Mon Sep 06, 2004 6:58 pm Post subject:

I've just had a look on eurocarparts.com, the two they list for the 924 under their own part numbers (305330010 and 305330011) show only for the 924 and the 924Turbo... Had a quick search online for the part number listed in the tech section here and I don't get any hits back for VW or Audi applications.
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Mars Red '78 Euro 924 n/a
http://www.cardomain.com/id/5150_uk

Graphite? Grey Metallic '85 (late model) 944 2.5

There are two kinds of pedestrians: the quick and the dead.

wdb · Joined: 02 Nov 2002 Posts: 2024

porsche did not custom design and cast an all new camshaft design for vw's new sports car (the 924 ) its an off the shelf part , we just havent identified which model they got it from , I'm thinking its from the 1.9 diesel , but no one has bought 1 to check , its just a matter of time before someone finds it .

5150 · Posted: Mon Sep 06, 2004 7:24 pm Post subject:

Good point.. Surely in that case it will be from one of the 1.9 or 2.0 VW/Audi models from the mid 1970's then.. can't be that many can there?
_________________
Mars Red '78 Euro 924 n/a
http://www.cardomain.com/id/5150_uk

Graphite? Grey Metallic '85 (late model) 944 2.5

There are two kinds of pedestrians: the quick and the dead.

wdb · Joined: 02 Nov 2002 Posts: 2024

considering that all the vw's from 1.5l-2.0l can interchange the head and crankshafts ,difference is the bore and stroke . says block/engine length is the same, the key points I think would be the cam specs lift duration,lobe seperation etc , and mechanical valves and the 924 head change in 77 so it could be the late 70's to early 80's cam design they used . according to the link i posted the 81-85 1588 cc Dasher, VW and Audi Types, Diesel, Mechanical Lifter, and 83-86 1780 cc VW and Audi Types, Mechanical Lifters are the possible donors . few want to spend the day at the breakers with a 924 cam in hand . some to all of these cams use a shim type lifter , whether or not that makes a difference I dont know , itcould be it doesnt matter what type of lifter is used , but from what I read those shim type lifter have a tendency to shoot the shims at high rpms , so maybe porsche just changed the lifters to avoid that problem and they just used a run of the mill $68 dasher cam ?.so the possibilities have been narrowed to 81-85 1.6l dasher or diesel , or 83-86 1.8 gas or diesel . I'm thinking its the diesel , its has the same conrods as the 924 ,porsche seems to like the heavier/durable parts . ok lets find a cheap source for both and see what happens .

Lizard · Posted: Tue Sep 07, 2004 4:30 pm Post subject:

I am pretty sure that it is an audi basedunit, the lobes on the VW are much narowwer (less surface area) and the tappets are smaller in diameter.
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3 928s,

mister904 · Joined: 06 Sep 2004 Posts: 2 Location: Hampshire UK

Thanks for the input, I'm now reliably informed by someone who works a lot on both engines that the VW and Audi cams are not interchangable, and so the VW cam won't fit

5150 · Posted: Wed Sep 08, 2004 12:35 am Post subject:

is the reason for asking that you have got a bust cam? quite a few porsche breakers over here if you have and the one's i've dealt with have been quite reasonably priced...
_________________
Mars Red '78 Euro 924 n/a
http://www.cardomain.com/id/5150_uk

Graphite? Grey Metallic '85 (late model) 944 2.5

There are two kinds of pedestrians: the quick and the dead.

wdb · Joined: 02 Nov 2002 Posts: 2024

are we overlooking the obvious . wasnt this engine used in an audi lorie/truck . I havent been able to find any info on any audi trucks . what was thier name/model .

5150 · Posted: Wed Sep 08, 2004 5:41 pm Post subject:

Van/Truck was tagged as the VW "LT", I've actually driven one too... sadly this was back in the early 1990's and it's no longer around for me to take a gander at the motor

_________________
Mars Red '78 Euro 924 n/a
http://www.cardomain.com/id/5150_uk

Graphite? Grey Metallic '85 (late model) 944 2.5

There are two kinds of pedestrians: the quick and the dead.

leadfoot · Posted: Wed Sep 08, 2004 8:29 pm Post subject:

you might try a volvo camshaft...
when i had my grind done thats the profile they used. It's modified from the stock 924cam. Worth a look into.
leadfoot