dwell angle plz explain this to me
Turbo Mini Forums

i know i'm billy with the question this weekend but i'm pissing about in & out of the garage, books n mags in hand, could you chaps explaiin dwell angle to me! all aspects

cheers all

SKYLINES ARE LIKE CLITS, EVERY FLANGE SEEMS TO HAVE ONE: see this sticker on my silvia

the Search-section on this forum is blummin superb & simple to use, unlike some other forums, without the search-section & the help of this bunch of chaps on here i'll never be able to !!!Start the day with a 998cc turbo!!! :) i'm getting closer though!

Tom Fenton says: I have it all, make me an offer

the dwell is the measurement measured in degrees at which the mechanical points are open,

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oh the amount of degrees (of the imainary circle) the dizzy cam/shaft turns untill the points shut! so if running points its a better way of obtaining the correct gap

am i in the right ballpark sorta thing

SKYLINES ARE LIKE CLITS, EVERY FLANGE SEEMS TO HAVE ONE: see this sticker on my silvia

the Search-section on this forum is blummin superb & simple to use, unlike some other forums, without the search-section & the help of this bunch of chaps on here i'll never be able to !!!Start the day with a 998cc turbo!!! :) i'm getting closer though!

Tom Fenton says: I have it all, make me an offer

Hi,
Spot on
Cheers,
Gavin :)

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My Mini build diary

cheers chaps, will i ever be an a/a+ serie's jedi??? lol doubtfull but i'm trying oh very trying

seriously well appreciated!

SKYLINES ARE LIKE CLITS, EVERY FLANGE SEEMS TO HAVE ONE: see this sticker on my silvia

the Search-section on this forum is blummin superb & simple to use, unlike some other forums, without the search-section & the help of this bunch of chaps on here i'll never be able to !!!Start the day with a 998cc turbo!!! :) i'm getting closer though!

Tom Fenton says: I have it all, make me an offer

Hi,
It takes years, I don't profess to know everything, as Roger says... Every day is a school day!
Cheers,
Gavin :)

VEMs Authorised Installer / Re-seller. K head kits now available!

WB/EGT gauges. Click here for customers write-up

Visit www.doyouneedabrain.co.uk

My Mini build diary

it really makes the points gap in the haynes just a guide, was'nt it the norm years back to file the points surface if it was pitted then re-gap the points, dwell angle seems the more accurate way to sort out points trobles if ya use them, small gap hotter spark etc not nesscerrily good but ya probobly know how i'm thinking about it all


defo with you n roger bat ... Every day is a school day! we need more playtime though lol

SKYLINES ARE LIKE CLITS, EVERY FLANGE SEEMS TO HAVE ONE: see this sticker on my silvia

the Search-section on this forum is blummin superb & simple to use, unlike some other forums, without the search-section & the help of this bunch of chaps on here i'll never be able to !!!Start the day with a 998cc turbo!!! :) i'm getting closer though!

Tom Fenton says: I have it all, make me an offer

gap's different to dwell.

the gap wants to be set correct otherwise it will effect dwell.

but yeah, you carfeully file the points to get rid of the pitting (usually as a pair to keep them true) and refit.

saying that, on a mini its pointless (get it?!) as they are so cheap. just bin them and get a new set although it is a good check if a car hasnt been run for a while. usually find that they have crusted over.

i'm on my last 2 sets of points & dont plan to use them again really there ok i spose but reading up on the points dwell subject its amazing how it can make quite a dirrent driving experiance, how if affects the engine performance, more critical than alot of ppl think i reckon

i'll be welcoming megajolt i think, pays to know stuff even if you dont use points, helps diagnosing probs dont it! i have a few lol

SKYLINES ARE LIKE CLITS, EVERY FLANGE SEEMS TO HAVE ONE: see this sticker on my silvia

the Search-section on this forum is blummin superb & simple to use, unlike some other forums, without the search-section & the help of this bunch of chaps on here i'll never be able to !!!Start the day with a 998cc turbo!!! :) i'm getting closer though!

Tom Fenton says: I have it all, make me an offer

It was easier finding faults with points, condensor & coils many moons ago. Damn nightmare nowadays with ECU's etc. Bring back cars with bad emissions is what I say! Must be my age!

Edited by Jason G on 23rd Jul, 2007.

anyone know what the dwell angle should be a on a A+ 998?

Team Racing

Any good Jimbo?

http://www.infomininl.org/readarticle.php?article_id=2

If something is worth doing, it's worth doing half of.

This is taken from a PDF copy of the haynes manual

Distributor - contact breaker ignition
Type:
All models except Cooper S Mk III:
Early type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lucas 25D4
Later type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lucas 45D4, 59D4 or Ducellier
Cooper S Mk III . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lucas 23D4
Direction of rotor arm rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Anti-clockwise
Contact breaker points gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.35 to 0.40 mm
Dwell angle:
Lucas 23D4 and 25D4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60o ± 3o
Lucas 45D4:
Non-sliding contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51o ± 5o
Sliding contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57o ± 5o
Lucas 59D4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54o ± 5o
Ducellier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57o ± 2o30’
Firing order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-4-2 (No 1 cylinder next to radiator)

cheers guys

Team Racing

dwell is just a measure of time really....

but as far as points go...fit electronic ignition !!!

Sod all that carry on lol And are you sure about filing points ? whilst its been many years, I thought most had a coating, that if you filed it off...in a very short period of time the points were scrap ?

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

I wish I could bin the points, but race class rules say that the points have to stay :(

Team Racing

They are good enough mate for a class Set the radius arms as near to parallel as you can get, use oil in the rear wheel bearings.

Cheers tom, somthing is bent on the back at the moment with around 3 degress to in (off the scale on my gauges) still had fun yesterday, and the wife got 3rd in the final on her first outing, putting me to shame (bitch!)

Team Racing

Do the points fire the coil, or do they fire an external ignition amp of some sort ?

At least that style would mean less current going through the points.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

the points do fire the coil :(

Team Racing