Bumper shock mount modification

Maintenance advice to keep your Spider in shape.
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red
Posts: 11
Joined: Tue Sep 20, 2011 10:35 am
Your car is a: 1978 spider

Bumper shock mount modification

Post by red »

I am building a custom front and rear bumper. Just a curved steel tube. Does anyone know what the 78 bumper shocks are inside ??? Can I cut and shorten the stock bumper shock mount by cutting an inch or so out of the smaller diameter forward steel tube.?? Is there a spring inside the full length and, or fluid in the full length. Does anyone have a cut away view or has anyone cut one apart and photographed it ????

As always , thanks for the insight.
Brian
wizard124
Posts: 752
Joined: Mon Oct 29, 2012 9:27 pm
Your car is a: 1980 124 spider FI
Location: Sheridan, WY exSan Rafael, CA

Re: Bumper shock mount modification

Post by wizard124 »

They are EZ to drill out. Pressure and oil inside so drill thru some cardboard to protect yourself. Push in to desire length then add a set screw. Done!
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81SPIDERMATT
Posts: 1239
Joined: Mon Oct 11, 2010 5:10 pm
Your car is a: 1981 spider 2000
Location: FORT COLLINS, CO

Re: Bumper shock mount modification

Post by 81SPIDERMATT »

never had one apart like you are asking .... I would bet that you do not have the inch that you need to cut off of the end.... no spring ... pressurized fluid .... wizards fix would be the way to go ...but obviously you will loose the "shock function" of the bumper
paulwall
Posts: 31
Joined: Sun Dec 28, 2008 10:33 am
Your car is a: fiat spider 1977

Re: Bumper shock mount modification

Post by paulwall »

I replaced my bumper 3years ago,,Like you I did not like the sticky out bumper..drilled and welded them much better..I bought a 6m length of stainless tube ..cost me 50 euros.all ready had a tube bender.so did not have a prob bending ..they look a lot better and much lighter..paul
red
Posts: 11
Joined: Tue Sep 20, 2011 10:35 am
Your car is a: 1978 spider

Re: Bumper shock mount modification

Post by red »

Thanks guys. I'll try the Wizard solution. Did you drill the psi relief hole in the inner forward smaller tube or in the outer tube that eventually became the set screw hole?? Also is the set screw tapped through both tubes or only through the outer tube and pressed against the inner tube

Again thanks for the suggestion

Brian
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