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Front lower arms

Posted: Mon Nov 02, 2015 7:05 pm
by datsunboy
Hey guys.
Got a question on modification of the front lower arms.
The bit at the end fowls on the disc, and I reckon I can just chop this section off after the last ball joint bolts as it's not really doing anything?
Thoughts?
I could just grind it back for clearance but would prefer to just chop it all if possible.
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Re: Front lower arms

Posted: Mon Nov 02, 2015 8:03 pm
by Bartman
B110/210/310 arms don't have that ring on them.
But I would ask Cletus at old school if I were you.

Posted: Mon Nov 02, 2015 8:31 pm
by datsunboy
Can you ask him? I'm not on there.
Factory 510 ones do have it, and these are a copy of them

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Re: Front lower arms

Posted: Mon Nov 02, 2015 8:53 pm
by brocky41
What discs are you running - shorter hat discs may help

Re: Front lower arms

Posted: Mon Nov 02, 2015 8:57 pm
by datsunboy
can't remember right now on the disc's, but I'd rather not change them, I went to a lot of effort to find these ones with the dimensions I wanted to keep the caliper as far in as possible so I don't have to run + offset FWD wheels haha (plus they are brand new).

Re: Front lower arms

Posted: Wed Nov 04, 2015 9:20 pm
by 85_Z31
I have seen this situation solved with a negative offset bump steer spacer

it adds a bit of track width but also moves the rotor away from the Control arm, no cutting and grinding and they are an off the shelf part for the Z31 struts you have.

http://responsetype.com/shop/fairlady-z ... a-kit-all/" onclick="window.open(this.href);return false;

if this design wont pass a cert its a good thing we know a guy who can help with his cnc

Re: Front lower arms

Posted: Wed Nov 04, 2015 10:03 pm
by datsunboy
The cert guy on old school said it would be fine to cut the ring off the lower arms, so I'm gonna go ahead and do that.
Might still need to get some RCA's anyway though, as the bolts that hold the strut to the steering knuckle bit the ball joint limiting the amount it can turn.......not sure if its enough turn yet or not, doesn't look much less turn than factory.

But lets face it......going ultra low will require RCA's anyway haha!

Re: Front lower arms

Posted: Thu Nov 05, 2015 6:49 am
by DJZ
I was having a similar problem with mine and mucked around for ages cutting back that ring but when I ended up putting the car on the ground there was heaps of clearance, must have just been the way things were sitting when it was jacked up. Is the radius rod clamping the ball joint down?

Re: Front lower arms

Posted: Thu Nov 05, 2015 10:36 am
by torqued
I would leave it,
And RCAs.

If you cut it, its just going to be another modification.
RCAs would solve the issue and prevent the need for cutting

Posted: Sun Nov 08, 2015 4:57 pm
by datsunboy
RCAs won't fix it unless they are offset ones like james posted.
Yeah the radius rods are done up tight and clamping the ball joint well. I think putting it on the ground would only worsen the problem on this one

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