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'73 911 T Targa
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Substitute M10 10.3 button head for M10 8.8 hex head?
I’m redoing fuel lines and replacing my pump with a pump up forward.
The fuel line route with the most fluid path is through the bracket for the cross member. As you can see in the picture, the hose could end up rubbing on the bolt head that’s holding the cross member. A button head socket head bolt would eliminate the sharp corners of the bolt head. It appears that M10 10.3 button head cap screws are readily available. Can I safely replace the M10 8.8 bolt with an M10 10.3 button head? Last edited by Quickstep192; 12-23-2022 at 01:31 PM.. |
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12-23-2022, 12:44 PM
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Join Date: May 2002
Location: Portland, Oregon
Posts: 12,660
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No picture!
Other than esthetics I doubt it matters. But it will infuriate the P gods and most likely they will cause the car to self destruct.  
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Harry 1970 VW Sunroof Bus - "The Magic Bus" 1971 Jaguar XKE 2+2 V12 Coupe - {insert name here} 1973.5 911T Targa - "Smokey" 2020 MB E350 4Matic |
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12-23-2022, 12:52 PM
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'73 911 T Targa
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Here’s the picture.
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12-23-2022, 01:33 PM
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Join Date: Jun 2013
Location: Orange County, Ca
Posts: 615
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I doubt id even worry about that.
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1976 911 1976 914 1986 951 |
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12-23-2022, 01:39 PM
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Join Date: May 2002
Location: Portland, Oregon
Posts: 12,660
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Why not run the hose outside of the clamp? Zip tie into place.
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Harry 1970 VW Sunroof Bus - "The Magic Bus" 1971 Jaguar XKE 2+2 V12 Coupe - {insert name here} 1973.5 911T Targa - "Smokey" 2020 MB E350 4Matic |
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12-23-2022, 01:50 PM
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It's a 914 ...
Join Date: Jan 2008
Location: Ossining, NY
Posts: 4,720
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Not sure I'd worry about rubbing on a bolt like that, but if concerned, I agree a zip tie would fix that.
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12-23-2022, 02:11 PM
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Join Date: Jun 2009
Location: Sweden
Posts: 1,191
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Shouldn’t be an issue switching the bolts as you mentioned
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SEARCHING FOR ENGINE 6208326 (last seen in car with VIN 9111101452) 911E Coupe -70 Carrera 3,2 -84 Sold |
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12-23-2022, 09:48 PM
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PCA Member since 1988
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Put an Adel clamp under that bolt and then run the hose through the clamp. That will keep it from rubbing on the bolt head or anything nearby. And it will look like the factory intended to do it that way.
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12-23-2022, 10:48 PM
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'73 911 T Targa
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The button head bolt leaves no sharp corners. I like the idea of adding a clamp. I’ll add that too.
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12-24-2022, 12:25 PM
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Join Date: Apr 2010
Location: Los Angeles
Posts: 1,184
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Harbor Freight is your friend
https://www.harborfreight.com/media/catalog/product/cache/9fc4a8332f9638515cd199dd0f9238da/i/m/image_20102.jpg |
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12-26-2022, 11:32 AM
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