TR4/4A TR4 Suspension Safety Issue?

[KVH]

I'm having a little difficulty believing that the lower fulcrum bracket of the TR4 suspension, the one that holds the wishbone arms, is held only by one single bolt. I know the TR6s went to two (or think they did), but it seems to me that one lose bolt on a TR4 could be mean major problems. Does this bother anyone else?

 

[PeterK]

It's common to either add the second bolt or obtain TR6 lower mounts. Most later frames already have the second holes drilled.

 

[Tabcon]

I noticed the same exact thing yesterday when I was disassembling the front end.
Mine were on very tightly though and they are nyloc bolts. From what I understand, most of the force exerted on the front suspension is on the upper A arm where they have castle nuts with cotters installed. Good idea on the second bolt though, I'm going to do that when it all goes back together.

 

[TR4nut]

If I understand this thread correctly, I think you are talking about the 4A suspension, which is weak with one bolt holding the lower brackets. The TR4 suspension is different (its the same as the TR3).

 

[TR4A_IRS]

Does this bother anyone else?

Not me, since mine have lasted over 40 years and 100K miles without failure.