924Board.org

scm924s · Joined: 22 Oct 2010 Posts: 264 Location: Gloucester UK

The square one is one usually offered as a ballast resistor to the coil on early cars, the round one was the one on my Martini and I replaced it with a similar one from a later car when it failed. On the later cars, this resistor is usually mounted by the footwell fuse box.

The round one is rated 1.8ohm/40 watt, not sure if the square one has a similar rating?
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1984 n/a Ruby Red Metallic
1988 924S Guards red- sold
1986 924S Guards Red - sold
1984 n/a Black - sold
1980 n/a Le Mans#1 - sold
1980 n/a Le Mans#2- sold
1977 Martini - sold

Mudd · Joined: 27 Aug 2012 Posts: 78 Location: Cincinnati,Ohio

Does anyone with a 1978 924 have the square one. And if so what kind of shape is it in. I can't believe I am the only one with this problem.
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1978 924
1987 944

gwan2cruz · Joined: 26 Nov 2017 Posts: 18 Location: Lima, NY

Hi, I have a 1978 Porsche 924 and found your old post regarding trying to get the fan resistor: Beru WZ18-2f. I know this was a long time ago but wondered how you made out and if you located that part? If not, there is a round resistor: 477905052a, I wondered if you tried that?
Thank you in advance, again I know this post was over 7 years ago, but I am in the situation that you were then.
Gary
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78 924 Special Edition

MikeJinCO · Posted: Fri Apr 10, 2020 11:16 pm Post subject:

That thread seemed to cover everything. If you need the radiator fan resistor I might have a couple laying around here that I bought on ebay years ago, doesn't look the same but works quit well and a little wire adapting required. If it is the ignition ballast resistors, I found the resistance and just googled them. Ended up with some ceramic ones from a mid 1980's Mercedes that fit and work perfectly. Send me a PM with which you are looking for
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Mike

'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild)

gwan2cruz · Joined: 26 Nov 2017 Posts: 18 Location: Lima, NY

I am really looking for the Beru w18-2f which is the exact replacement, but I did buy another one similar to that on eBay but made for a Mercedes. It is not the exact same but similar.
I can get the round one 477905052a, is that what you have available? The problem of finding this part it is for the a/c model with 2 fans.
Thank you.
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78 924 Special Edition

MikeJinCO · Posted: Sat Apr 11, 2020 2:45 am Post subject:

I don't have what you are looking for.
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Mike

'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild)

scm924s · Joined: 22 Oct 2010 Posts: 264 Location: Gloucester UK

The rad fan resistor which is mounted on the top of the front panel on early cars is still used on later 924's but mounted by the auxiliary fuse panel in the side of the LH footwell (on euro spec cars).

There is at least one (used) currently on ebay.com
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1984 n/a Ruby Red Metallic
1988 924S Guards red- sold
1986 924S Guards Red - sold
1984 n/a Black - sold
1980 n/a Le Mans#1 - sold
1980 n/a Le Mans#2- sold
1977 Martini - sold

gwan2cruz · Joined: 26 Nov 2017 Posts: 18 Location: Lima, NY

Thank you all for the suggestions, I guess I will have to get the round one and see if it will fit in the original location. I correct one looks like garbage, but I think it may work for a while longer.
Thanks again.
Gary
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78 924 Special Edition