924Board.org

augidog · Joined: 03 Mar 2003 Posts: 1360 Location: New Jersey

Are old metal 924 control arms swappable with the newer aluminum 944?
Its a 78 924 na
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1978 924 95 mile daily driver.
Audi TB/POR174M/High Flow Cat/2.25" exhaust
I knew that positive thinking thing wouldn't work.

Vince Ponz · Joined: 02 Nov 2002 Posts: 3581 Location: Florida

I don't think so. You might be safer with the metal instead of the alum. Alum cracks and to replace the ball joints is expensive. Your current ball joints are about 12 bucks ea.
While you are changing the A arms put in Bug Pack 12 dollar plastic bushings. They give a firmer feel.

If you need two 924 iron A arms let me know.
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"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock

My924gtc · Joined: 14 Aug 2004 Posts: 1362 Location: 248

You might also want to throw a bead weld along the seems of the steel A-Arm while you are at it. Both sides. This will make them even stronger.
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MJ
'81 924 2.0L T
'82 924 2.3L SC/EFI <---online fall '06

Sponsor of the 944 Cup and Super Cup
Sponsor of the "2006 Battle in the Badlands"

Kenodog · Joined: 25 Jun 2003 Posts: 2669 Location: Vancouver,B.C.

Unless you know exactly what kind of steel they are made from I would not weld them.To do it properly you need the right filler rod and info like whether to pre heat before welding or post heat treat in order to get the entire part back to the right temper.All steels have different properties and if they crack and a wheel falls off in a hard,high speed corner your gonna be in trouble.
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1979 Euro 931, Olive
1981 931, Sabine
1991 Ford Ranger XLT 4x4, Ricky
1996 Ford E-350 ex-FedEx Van
2014 Mazda CX-5 (Kinderwagon)
2019 KTM 790 Adventure
2024 KLX300
2024 KLX140

Zuffen · Posted: Fri Dec 17, 2004 6:34 am Post subject:

7018 rod 1/8 to 3/32 no bigger due to the heat

wire brush the seam and clean out the paint

Just watch your heat and have fun.

The factory 933 arms were gusseted for strength.
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Bob Dodd - 924turbo@cox.net
931 1982, 944 1982 euro, 924S 1988SE, 93 968 tip 06 Silver Cayenne S, 06 Black Cayenne S

I have Way too many cars, parts for the 931,944 and 951

My924gtc · Joined: 14 Aug 2004 Posts: 1362 Location: 248

Once again Bob eliminates the guess work.

What a resource you are Mr. Zuffen.
_________________
MJ
'81 924 2.0L T
'82 924 2.3L SC/EFI <---online fall '06

Sponsor of the 944 Cup and Super Cup
Sponsor of the "2006 Battle in the Badlands"

Kenodog · Joined: 25 Jun 2003 Posts: 2669 Location: Vancouver,B.C.

Any idea where they put the gussets? A pic would be nice if you've got one.
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1979 Euro 931, Olive
1981 931, Sabine
1991 Ford Ranger XLT 4x4, Ricky
1996 Ford E-350 ex-FedEx Van
2014 Mazda CX-5 (Kinderwagon)
2019 KTM 790 Adventure
2024 KLX300
2024 KLX140

CBass · Joined: 03 Nov 2002 Posts: 2807 Location: Vancouver, Canada

Nothing quite like a 3/32 7018 rod

MIG would work just fine as well, but I've always preferred the feel of an arc welder over wire feed.

There's a trailing arm, no pics of the A arms. It's not that difficult to see where it would be able to flex, just imagine which direction the forces are going to be exerted on it and weld some sheet metal on where it looks like it could flex.
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'81 931 in various states of assembly