924Board.org

Fifty50Plus · Posted: Tue May 04, 2021 5:05 am Post subject: Alternator bushings

My race car alternator bushings were new when I built the car several years ago. Now they are mush and the alternator is kind of cocked. Does anyone have any suggestions as to where to get replacements or should I go with making brass ones?
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1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA

Riggard · Posted: Tue May 04, 2021 6:07 am Post subject:

I bought them from a dutch guy who sells replacements; https://www.924-944-onderdelen.nl/shop/porsche-924-rubber-bushing-voor-dynamo-bevestiging-059-903-263-a-nieuw-boxhp/
As far as I know he also ships internationally, but can imagine that for such a small part the costs of doing so get very steep fast.

MikeJinCO · Posted: Tue May 04, 2021 6:41 am Post subject:

The first guy I went to made some aluminum ones as was in a hurry, they wore out quickly. Then went to steel and they are good, now the solid mounting is like the rest of the world uses.
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Mike

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

Fifty50Plus · Posted: Tue May 04, 2021 9:01 am Post subject:

Mike, thanks. I was rooting around below my lathe looking for old brass stock but couldn't find anything. I'll give it a go with steel.
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1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA

MikeJinCO · Posted: Tue May 04, 2021 9:11 pm Post subject:

Chuck, If you are making some I'd happy take another set. To me these rubber bushings are not one of Porsche's better ideas. I will grant that being solid will put a little more stress on the alternator and water pump bearings.
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Mike

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

Fifty50Plus · Posted: Wed May 05, 2021 6:30 am Post subject:

I couldn't find any ready made tubing M8 ID, 19 MM OD so I had to order some 19 MM rod. It seems the minimum length is 7 FEET. I need an inch and a half per alternator.

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1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA

jacobroufa · Joined: 18 Nov 2016 Posts: 531 Location: Belvidere, IL

If you've found yourself with that dilemma of too much material, I'd happily pay for a set of solid alternator bushings for both my 924 and 931. I replaced the 924 with stock rubber a few years back but doubtless they'll wear out again in a couple years, and my 931 bushings work but are pretty worn, and impossible to find..
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1980 Porsche 931
1981 Porsche 924 Weissach

Fasteddie313 · Joined: 29 Sep 2013 Posts: 2595 Location: MI

What are they OEM on a 931?

Iirc my alt mounts where it hinges are brass..
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80 Turbo - Slightly Modified

GregSC · Joined: 19 Jul 2008 Posts: 122 Location: Lovely, KY

I'd be happy to pay for a set of 931 bushings as well. Been looking for a good replacement for the original bushings for a while.
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1981 931

Fifty50Plus · Posted: Fri May 07, 2021 6:42 am Post subject:

Jacob,
Can you take pictures of the 931 and 924 bushings? If they are the same, I can make some. My only 931 engine is buried in a storage bin and I know that the alternators are located on the opposite sides of the engine. It may be a different mount/bushing????

Eddie, sounds like someone already made an improvement on your engine.
_________________
1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA