Puller bolt for torsion bars

[Forumadmin]

I was pulling torsion bars with the one bolt I had that was long enough to work and now the threads are a bit wonky. Got any bolts for that? All of mine are about an inch long and just that one was 3.5 inches. Not even sure where or if it fits in the car!

Scott Renner

[Forumadmin]

Spent morning trying to find a bolt to fit. I do not know what the thread is. It is not BSF or Whit and my Metric course and fine and American course and fine taps do not seem to be correct. It seems close to 7/16 BSF; but is not. I eventually found two spare bars, so it was easier to check.

[Peter Holden]

Scot/Keith
I assume you are talking about the front torsion bars
On page 83 of the javelin manual there is a diagram of a tool to extract the torsion bars. It says thread is 7/16" BSF x 4 1/2" long. Now there arn't many bolts that long at that diameter. My soloution was a piece of threaded bar and lock nuts. It worked ok but the tension on the threads when pulling nacks the thread on the nuts. The soloution I think would be to have a longer nut to spread the load.

[Peter Holden]

Scot/Keith
I assume you are talking about the front torsion bars
On page 83 of the javelin manual there is a diagram of a tool to extract the torsion bars. It says thread is 7/16" BSF x 4 1/2" long. Now there arn't many bolts that long at that diameter. My soloution was a piece of threaded bar and lock nuts. It worked ok but the tension on the threads when pulling nacks the thread on the nuts. The soloution I think would be to have a longer nut to spread the load.

[Keith Andrews]

A suggestion if cant get a bolt long enough and prevent distortion of threads...us a unf black grade bolt which can be brought off the selve easy, and run a bsf die down it 1st.

[Drummond Black]

The thread is 7/16 BSF. As Peter states 7/16 BSF screwed rod ( which can be obtained from a few specialists nut and bolt suppliers ) can be used with a good bsf nut. It is best to clean the thread in the torsion rod first. Use a 7/16 BSF plug tap ( no taper) and then spray WD40 into BOTH ends of bar at location areas.
Fit your puller and take up tension while adding more WD40. If engine is in the car then disconnect engine mount on relevant side and jack up the unit as much as allowed to get a long rod to the front of the torsion rod .
Give the rod a good tap and then retension the nut on the puller. It could take a bit to get it moving. I have sometimes left it overnight
under tension and soaked with WD40. Damage usually occurs when the puller is used to attempt to pull the bar out on its own.

Refit bar with graphite grease on flats.