Since having the car painted I have noticed that the hood isn't receiving sufficient force from the torsion bar and tends to drop. What is the process for increasing the preload ?. Nothing is broken, I'm just assuming the guys at the shop didn't reinstall it exactly as it was when removed.
Hood Torsion Bar Adjustment
- Thread starter E3_UK
- Start date
jmackro
Well-Known Member
The thing isn't adjustable. If the shop took the torsion bar assembly apart (and I can't imagine why they would, unless they wanted to paint each component separately), they could have messed up installing the two blocks that anchor the fixed end of each torsion spring. But more likely, the springs have just lost their tension and a replacement is needed.
Do the torsion bars have almost enough force to hold the hood, or not nearly enough? In other words, is it dramatically weaker than it was pre-paint?
Question: are replacement torsion bar assemblies still available?
Do the torsion bars have almost enough force to hold the hood, or not nearly enough? In other words, is it dramatically weaker than it was pre-paint?
Question: are replacement torsion bar assemblies still available?
Here are some helpful hints curtesy German forum !
Basically you should do this with two people, otherwise you will scratch the whole hood.
Loosely mount the bearing block, torsion bars, and tube with struts, but do not yet install the end stop. Insert the complete hood strut assembly and tighten the screws. Then, by slightly twisting the struts, secure the end stop. This will create a slight preload when the hood is open. Finally, attach the struts to the fender.
You must mount the hood strut to the hood without any tension, as shown in the first two pictures. Then, you must extend the strut away from the hood, approximately at a right angle, and position and tighten the stop bracket. (From GR)
Basically you should do this with two people, otherwise you will scratch the whole hood.
Loosely mount the bearing block, torsion bars, and tube with struts, but do not yet install the end stop. Insert the complete hood strut assembly and tighten the screws. Then, by slightly twisting the struts, secure the end stop. This will create a slight preload when the hood is open. Finally, attach the struts to the fender.
You must mount the hood strut to the hood without any tension, as shown in the first two pictures. Then, you must extend the strut away from the hood, approximately at a right angle, and position and tighten the stop bracket. (From GR)
Take a look here: BTW, the torsion bar ends (the pot metal part that distorts) were still available from BMW at the time I made this post below.
https://e9coupe.com/forum/threads/e3-hood-torsion-bar-again.45373/
NB: Keshav, the E3 bar is a totally different animal than the E9 bar.......why, who knows.
https://e9coupe.com/forum/threads/e3-hood-torsion-bar-again.45373/
NB: Keshav, the E3 bar is a totally different animal than the E9 bar.......why, who knows.
The torsion bar was simply disconnected from the hood. It feels like it almost has the same strength as before, maybe it has just loosened a bit from being removed. I thought perhaps that the torsion springs could somehow unwind, requiring re-setting.
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