Boxer Rear Clamshell Gas Struts

Mine are still the original but they are becoming so weak that I don't park the car up wind and I use a ''safety support broomstick'' when I work on the engine. New ones are on order from Superformance and they don't cost a lot. Unfortunately the new ones are aftermarket parts without the Ferrari name on them as on the original.

Best, Peter

 

once someone has posted here in this boxer/TR/M section long time ago such struts with livetime warranty. can not remember when it was and who posted it, but those struts I would order.
on my TR I need struts every 3-5 years, front and rear. terrible

 

Good day,

I posted a few times about my experience about getting some replacement struts made for my Boxer and my 365 GT4 2+2 and I cannot say enough at how happy I am with the results. The most recent post was early this year:

https://www.ferrarichat.com/forum/threads/i-cant-keep-it-up-the-front-hood-shocks-i-mean-the-front-hood-shocks.616344/page-2#post-147039146

You can also search for my original post way back in 2006.

In a nutshell my original Boxer struts were knackered and at the time (2006) they were NLA. I ended up finding a place that could recharge my struts and if not they could recreate a set. Sadly, my originals were too far gone and the internal seals could not be found and so the shop created replacements and they worked fantastic! Since the shop had not made a set for a BB before, I worked with them to find the appropriate force, travel, etc needed. Secondly, the shop modified the internals so that the strut would behave differently depending where it was in the travel. For example, the strut provided maximum force when just starting to open and then slowly reducing the force and acceleration until the clam is fully open. This ensured that the clam does not "snap" open causing undo stress on the clam, hinges, etc.

I installed these in 2006 and they are still working perfectly. Given my experience with the shop and now knowing what can be done with these struts, there is simply no way I would consider using off-the-shelf generic struts... and best of all the price for the struts was extremely reasonable and to me low cost.

Cheers,

Sam

 

I've replaced mine; 79 carbed boxer rear clam shell struts. David Feinberg was good enough to supply the part numbers and they look and work perfectly. These are from McMaster-Carr products. They are not expensive. However it is from 2008. Drew
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just ordered a set- in by Friday!

 

Having grappled with this exact question recently, thought I'd provide some images and offer comments regarding fit on the FRONT hood of my 365. Unfortunately it's still too early to fit the rear deck so this is a partial response only!

I first purchased the 50lb units from McMaster, due largely to the great price. OEM parts were 26.9" extended, the McMaster strusts where 28" - not a massive difference although the mount geometry exaggerates any delta when the hood is fully 'open'. Not a big deal, just irked me a little. The real concern was they were (imo) way too strong, especially at the top end of travel. I had to use a cord, tied to the catch hook, to help control things as the hood arched upward. It seemed much like restraining and angry mule with a small lasso - - - definitely no bueno!

So the McMaster struts came off and the LST unit went on. They worked beautifully, I'm sure the neighbor heard my sigh of relief.

The photos show both aftermarket units alongside the OEM strut (OEM in the middle). The LST strut is about 26.5" extended. I used heli-coils in the stock strut 365 ends to adapt them to the new hardware. Neither aftermarket strut has the same proportions of the original, but at least the rod on the LST unit has the normal chrome appearance.

The McMaster units were marked "50 lbs" and this checked on a my crude bathroom scale test. I think the difference is that the LST version offers less force (and/or some additional dampening?) as it nears full extension.

Clearly this is just one data point, hopefully there will be reason to test the rear strut application in the relative near future. Regards, Nate

 

For info and future reference:

To anyone that needs new gas struts for the rear end on the 512BBi, these will fit:

1984, 512BBi, rear engine lid gas strut: Stabilus Lift-O-Mat gas spring type 083836 300N, angle/angle 08 220 0300.

Warning: The gas struts sold from SuperFormance and Marenello parts UK for 512BBi rear end do NOT fit.

Best Regards Peter

 

Tag for future referance

 

Yes I’m right. I informed SF accordingly but they didn’t seem to care. I bought the struts locally in Denmark. They, and other brands, seems to be readily available many places.



best, peter

 

I bought the struts from here and they were on the shelf:

https://www.elektronico.dk/produkter/lineaerteknik/stabilus-lift-o-mat-gasfjedre/04083836

Best, Peter

 

I once used also the stabilus, but not long time. it was told me that the stabilus are not for horizontal mounting and after about 2 years they not worked anymore

 

We've been here, though not for years:
Boxer Rear Deck Lid Struts/Shocks

I had LST recharge/reseal mine, as several others here have, so you retain the original factory mounts, and markings.

 

once ago someone posted struts with livetime warranty, but can not find this post anymore
who can help?