rotor arm issue

[diabloam]

Hi all, posted recently about my turbo missing on boost and it turned out to be a loose distrib. cap. So easy fix but I ordered new cap, leads and rotor arm, cause my own didnt look too clever (could they be original? '86 car with 92k on it).

Anyway changed cap and leads fairly easily (cap is hasslesome but not too bad), but the rotor arm scared me off a little. Allen key that I had that fitted felt a bit saggy and I ended up not wanting to push things in case I rounded it. Think it might have been 3mm, so I have now got a 1/8 which according to clarke-garage is slighty larger so will try that (possibly get chance over weekend).

For people that have done this, whats the routine if I cant get it to move (rounding it off) is there another way to get it off (can it be drilled easily). Is there any tips for gettin what might be the original rotor (loctite from factory?) off, what is worst case scenario, thanks all

 

[sawood12]

It's a very tight fit. I had the same problem. I rang my specialist and he confirmed it is a real pig to get off. The only way is often to destroy the original. So I blanked off the openings that any debris might get into with insulation tape and got on it with a pair of mole grips and basically broke the old one off by grinding it away with the mole grip jaws - first by clamping them on the rotar arm itself and it sheared away, then gripping the remainder of the plastic that was on the metal shaft and crumbling it away. A bit unsophisticated and brutal, but worked for me.

 

[Dico]

Exactly the same for me. i.e. couldn't get the bugxer off, hence the new rotor arm being in the drivers door pocket.

Taken those notes down Scott for future reference.

By the way, your calipers fitted spot on thanks. Accelerator broke on test run though so I'm still Porscheless (into 4th week!).

 

[sawood12]

Glad to hear it, though sorry to hear you've just moved onto the next issue :-( These things can be a labour of love. A bit like buses - nothing goes wrong for a while and just when you are thinking "these things are bloomin' marvellous" you get side-swiped with a host of issues.

 

[rcsalmons]

When you fit the new one I would be interested too see how much play you have in the rotor arm. A couple of degrees in mine.

Rich

 

[sawood12]

I don't recall any play in my rotor arm - either the one I removed or the one I replaced it with. There is a small grub screw and I remember the new rotor arm was just tight enough on the shaft that I could rotate it to line up the hole with the grub screw, so by the time i'd fitted the screw I doubt there would be any movement in the arm.