BN1 Rear Bump Stops

[TonyR]

I have fitted new rear springs on our BNI along with the rubber bump stop strip on the frame below the axle.
When going over a bump in theon the re-bound. Is this common? The rear shocks appear to be in good condition.
Tony

 

[AH100M]

"When going over a bump in theon the re-bound."

What are you asking?

 

[TonyR]

Bill, Should have read "when going over a bump,then on the re-bound, the axle hits the chassis with a harsh bang" Is this a common occurrence as we have new rear springs and the rear shocks are good"

Tony

 

[Bob_Spidell]

Haven't noticed it on our BN2, though I haven't driven it a whole lot prior to and during its restoration. This wouldn't be tolerable in a 'street' car, and I don't recall it being mentioned in any contemporary road test articles.

The new springs could have a greater arch than original. This would raise the chassis and lower the axle relative to each other, and could cause this problem. This is most likely, IMO.

You say shocks are 'good,' were they rebuilt? Are they installed correctly (link correct)? I've put them in wrong before, which seriously limits travel.

 

[TonyR]

Never thought of that Bob, I will check with the manual to see if the orientation is correct. Don't know if the shocks are rebuilt...........they appear to work OK and the paint finish looks newish, not old.
Cheers!

 

[AH100M]

Definately not normal. I agree with checking the installation of the links - they CAN be installed wrong.

 

[TonyR]

Thanks Guys, Looks like the links are upside down.
Tony

 

[CanberraBJ8]

Very timely thread guys! Thanks.

I have issues in my BJ8 (late model). I fitted early model springs so the arse doesn't stick up in the air. Also i couldn't get tire clearance (wider rims than standard so the bottoms of the wheel arches kept touching the tires esp when cornering).

However this has left very little space between the bump stops - perhaps an inch, inch and a half?

I've been wondering whether the odd handling (twitchy rear end and VERY prone to oversteer, esp in the wet) has been due to the body touching the bump stop mid corner, but perhaps the shock arms are incorrectly install as well?

 

[Genos2]

My experience on MK3s or Phase2 MK2s,when they are"twitchy" or touchy when down shifting the radius rod bushes are worn out & allowing rear end assembly to shift. Replace bushes and all will be well.

 

[CanberraBJ8]

Ah! thanks for the info Genos2

 

[CanberraBJ8]

Found i had some radius arm bushes. Not sure when i got them!

However... the bolts at the axel end of the radius arms refuse to move! I can feel them moving with the rubber, but it seems that the inner sleeve is stuck fast to the bolts. I guess the have rusted??? Cant see any other reason for them to have stuck.

Any thoughts on how to move them? Because of the give in the rubber it is preventing me from 'breaking' them with a wrench. Am i going to have to remove the hubs and punch them out? Currently they have been sprayed with WD40 with the hope it will penetrate far enough...