Ausmini
It is currently Fri Apr 19, 2024 3:23 am

All times are UTC + 10 hours




Post new topic Reply to topic  [ 19 posts ]  Go to page Previous  1, 2
Author Message
PostPosted: Tue Jan 31, 2023 2:11 pm 
Offline
848cc
848cc
User avatar

Joined: Fri Oct 18, 2019 5:11 pm
Posts: 413
Location: Brisbane Northside
That isn't far off. If you last adjusted it with a feeler gauge then try doing the same but 1 thou smaller.

_________________
1986 Mayfair (998 auto), 1974 S, 1974 Van, 1972 PMG Van

Too many minis


Top
 Profile  
 
PostPosted: Wed Feb 01, 2023 7:57 am 
Offline
998cc
998cc
User avatar

Joined: Wed Nov 29, 2006 10:02 pm
Posts: 625
Location: Clifton Springs, VIC
You need to open the points more (larger feeler) to bring down the dwell angle and vice-versa.

In the decades I ran points I pretty much always had to fine tune the gap when I checked with the meter after setting with feelers.

_________________
Cheers,
Rod.
______________________________
'63 Morris 850 (Old Secondhand CAR)


Top
 Profile  
 
PostPosted: Fri Feb 10, 2023 9:58 pm 
Offline
Yay For Hay!
User avatar

Joined: Wed Sep 08, 2004 9:27 pm
Posts: 15869
Location: Wodonga - Vic/NSW border
Distributors really are dark magic... so many moving parts all in sync, but with electricity too...

_________________
did I tell you that I won a trophy?


Top
 Profile  
 
PostPosted: Sun Feb 12, 2023 10:35 am 
Offline
SooperDooperMiniCooper ExpertEngineering
User avatar

Joined: Fri Apr 29, 2005 9:46 am
Posts: 18854
Location: Under the bonnet son!
It's not too important to set the dwell to an absolute point. Dwell is the period in rotation (per lobe, but averaged across four) the coil is allowed to charge. At low RPMs the rotor turns slower, and so the coil has more time to charge. It is only as the revs get to a very high point that the risk of the dwell charge angle not being enough becomes a problem. This will show itself as misfire. No misfire, no problem. Set the dwell too high however, the coil will simply overheat as once the coil field is charged it burns the rest off as a resistance.

So that is why the range is so wide. It's the range between high RPM misfire and low RPM overheating.

I do enjoy that the modern modules set the dwell intrinsically, I never liked fiddling with feeler gauges, I was terrible at it :)

_________________
SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 19 posts ]  Go to page Previous  1, 2

All times are UTC + 10 hours


Who is online

Users browsing this forum: No registered users and 18 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  

cron

© 2016 Ausmini. All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.