Distributor pickup air gap

[TVR Beaver]

Hi All

Been looking around for a strange noise I get around 1600 RPM.. metallic rattle come dry bearing type of noise... Anyway.. tried to look in the dissy to oil it but could not get it apart in situe but did take the base plate screws out so it moved...
Anyone know what the air gap is on the 8 pointed rotor to the pickup as you can move it about a bit... Cheers...

[Sardonicus]

0.15 -0.20mm should do you for a dizzy p/up ETA

Edited by Sardonicus on Friday 12th August 16:48

[TVR Beaver]

Hi Simon....yes,, having posted, I had a look around a bit more... There is a US site that suggests ".010 and others sites saying 0.25mm / 0.30mm.. and others saying 0.25mm to 0.40mm... so I'm guessing at about 0.30mm..... There does sound to be something in a Land Rover manual on this?
also not to use metal feeler gauges as it can magnatise the pickup making it useless...
Would anyone have a re-build manual for this unit at all?... It's Lucas but not sure of the exact type (1999 car)....
Cheers

Edited by TVR Beaver on Friday 12th August 07:33

[Sardonicus]

Seriously its not critical unless miles out most Jap stuff from that era 80's> using constant energy ignition same as your dizzy used 0.2mm approx, actually my bad my previous post should have been 0.15 - 0.20 mm not thou

[blitzracing]

As the man says as long as its close enough to trigger at starter motor speeds its just fine,

[TVR Beaver]

yes.. set it to .25mm... it moves away a tad on vac.. but only to .30mm or so... that will do.... things aren't quite concentric by a thou or so...
now... what timing is best?... get it to pink and back off... or is there a setting most people use?... 28 maybe?

[Sardonicus]

28-30 at 3.5k rpm should do you the advance should be all in by then but go to 4k just to check

[TVR Beaver]

Thanks Simon.. will get it set and see if we get any pinking... I'm assuming that's with the vac pipe removed....