 914 Steel front crossmember vs 911 Aluminum (Weight) |
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| Mr. Olympic Blue 2 You |
 Mar 30 2015, 12:53 PM
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#1
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Member  Group: Members Posts: 134 Joined: 7-September 10 From: Puyallup, WA Member No.: 12,150 Region Association: Pacific Northwest  |
I know the 914 steel front cross member really doesn't weigh that much but wondered if the ounce counters have weighed it compared to an aluminum 911 cross member and what the savings was?
I believe the aluminum was stronger and cheaper to produce (not to necessarily save weight) by Porsche.. Andrew |
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| mepstein |
Mar 30 2015, 01:44 PM
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#2
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914-6 GT in waiting Group: Members Posts: 19,254 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region 
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The aluminum part won't fit the protective steel cover so I decided not to use it. I think it saves about a pound and half.
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| whatabout1 |
Mar 30 2015, 02:05 PM
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#3
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Toys in Red Group: Members Posts: 403 Joined: 6-March 06 From: Charlotte, NC Member No.: 5,676 Region Association: None |
Couple of pounds IIRC
There was a discussion about removing weight that low in the car raises your center of gravity. I put 1 in anyways. With the bhp that I have every pound lost will help (IMG:style_emoticons/default/driving.gif) |
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| Mr. Olympic Blue 2 You |
Mar 30 2015, 02:43 PM
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#4
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Member Group: Members Posts: 134 Joined: 7-September 10 From: Puyallup, WA Member No.: 12,150 Region Association: Pacific Northwest |
Thanks for the info guys..I hadn't taken the cover fitment into account so I think I'll put this to rest for the 2lb savings (which is about what I figured)
Andrew |
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| Jetsetsurfshop |
Mar 30 2015, 02:46 PM
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#5
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Senior Member Group: Members Posts: 814 Joined: 7-April 11 From: Marco Island Florida Member No.: 12,907 Region Association: South East States |
I had one of each and decided to leave the steel one in my car. I liked that the weight was as low as it could be and I didn't need to fab a new cover either.
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| Borderline |
Mar 30 2015, 05:08 PM
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#6
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Senior Member Group: Members Posts: 720 Joined: 8-February 05 From: San Juan Bautista, CA Member No.: 3,577 Region Association: Northern California |
I was considering the Al cross member also and got to thinking that Aluminum isn't as stiff as steel. The cross member is the part that actually reacts the forces from the front torsion bars. The torsion bars put the cross member in bending and the Aluminum being more flexible would transmit more of the loading to the chassis. In noticed some cracks starting to form around the area where the cross member mounts............ anyway I ended up welding a flat piece of steel to the bottom of the steel cross member to make it even stiffer. FWIW
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| SirAndy |
Mar 30 2015, 06:04 PM
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#7
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Resident German Group: Admin Posts: 41,612 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
I've seen them flex. (IMG:style_emoticons/default/icon8.gif)
Went back to a stock steel one after that. Even if it's a few ounces heavier, that weight is about as low in the car as you can get. (IMG:style_emoticons/default/driving.gif) |
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| john914somers |
Mar 30 2015, 11:08 PM
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#8
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Member Group: Members Posts: 59 Joined: 24-January 12 From: sacramento Member No.: 14,051 Region Association: Northern California |
I wanted to put an aluminum one in my car but the wise old Tangerine educated me. Thanks Chris!!!
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| campbellcj |
Mar 31 2015, 09:53 AM
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#9
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I can't Re Member Group: Members Posts: 4,542 Joined: 26-December 02 From: Agoura, CA Member No.: 21 Region Association: Southern California
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When I converted my car around 2003 I had the option of aluminum vs. steel and was advised by several "gurus" to stick with the steel.
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| brant |
Mar 31 2015, 06:20 PM
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#10
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914 Wizard Group: Members Posts: 11,618 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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Despite all of the talk. I've run aluminum in w2w race cars since the early 90's with no problems.
I made an aluminum pan in 05 that has held up even with abuse. Pictures in my thread 1826lbs in metal body panels required it. |
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