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lancialulu
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« Reply #15 on: 18 November, 2015, 02:22:33 PM » |
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It's very interesting stuff. One thing which puzzles me is how do you physically adjust the dwell?
dwell is a funtion of mark space of the open close of the contacts so its a function of the contact gap. Electronic systems such as luminition does this electronically through timing circuits. |
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Its not the winning but taking part! or is it taking apart?
Lancias:
1955 Aurelia B12
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia Sport 1600
1983 HPE VX
1988 Delta 1.6GTie
1998 Zeta 21. 12v
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fay66
Permanent resident
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« Reply #16 on: 18 November, 2015, 04:02:07 PM » |
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System fitted to Fay since 2007 with no problems, I did as suggested and fitted a new set of points and plugs. Brian 8227  |
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Own 1966 Fulvia 2C Berlina since 1997, back on road 11-1999.Known as "Fay"
2006 Renault Megane 1 5 Dci Sports Tourer
Dedra Technical Adviser
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lancialulu
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« Reply #17 on: 18 November, 2015, 04:23:43 PM » |
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System fitted to Fay since 2007 with no problems, I did as suggested and fitted a new set of points and plugs. Brian 8227 Dwell should be checked from time to time with this as heal of points will possibly wear closing the gap (and retarding the ignition) only relevant for mega miles....Dwell is simple - I have a dwell meter bought at the time colourtune was all the rage. Clip across the points and get instant satisfaction that all is well with the ignition system... |
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Its not the winning but taking part! or is it taking apart?
Lancias:
1955 Aurelia B12
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia Sport 1600
1983 HPE VX
1988 Delta 1.6GTie
1998 Zeta 21. 12v
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lancialulu
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« Reply #19 on: 18 November, 2015, 06:00:56 PM » |
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I did chuckle when it said fit a NEW distributor!! Fat chance on a Fulvia
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Its not the winning but taking part! or is it taking apart?
Lancias:
1955 Aurelia B12
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia Sport 1600
1983 HPE VX
1988 Delta 1.6GTie
1998 Zeta 21. 12v
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RobD
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« Reply #20 on: 18 November, 2015, 06:35:09 PM » |
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Indeed Tim, I was very pleased to buy a Marelli dizzy in mint condition last week which is destined for my new engine . I'd looked at the 123 unit but rejected it on the grounds that by the maker's admission, wear rates on the cap was quite high. This is how I came to be researching ignition amplifiers and Utterly Butterly containers...
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You're all entitled to my opinion. '75 Fulvia 1.3S '68 works Laverda 125cc ISDT KTM 640 Adventure Yamaha TDM 900 Numerous Gas Gas trail bikes... www.adventureride.co.uk |
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frankxhv773t
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« Reply #21 on: 18 November, 2015, 10:54:06 PM » |
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Reading "how a car works" on the use of dwell meters I can't see how you can get readings for different cylinders. Surely the meter averages the dwell over all the lobes of the distributor cam.
Frank T
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peteracs
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« Reply #22 on: 19 November, 2015, 05:35:30 AM » |
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Assuming the disti has good bearings, and the points are not burnt etc, isn't the same result obtained by setting the gap according to the manual and then using a strobe light to set the timing? From what I can see the only plus may be to pickup the variance due to a worn disti? Peter |
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Beta Spyder S2 pre F/L 1600
Beta HPE S2 pre F/L 1600
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stanley sweet
Lapsed
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« Reply #23 on: 19 November, 2015, 09:47:17 AM » |
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Are new dizzy's for Fulvias totally unavailable then? I'm surprised going by what seems to be an increasing number of parts remade.
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1971 Fulvia 1.3S 'Leggera' 1999 Lancia Lybra 1.9JTD LX SW
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Neil
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« Reply #24 on: 19 November, 2015, 11:15:58 AM » |
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Yes you can buy a 1,2,3 unit, but that is not a remade Marelli dizzy, I have one it is not cheap, but does a good job.
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Neil
386
1973 Fulvia S2 1.3
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frankxhv773t
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Posts: 2245
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« Reply #25 on: 19 November, 2015, 09:14:58 PM » |
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"Assuming the disti has good bearings, and the points are not burnt etc, isn't the same result obtained by setting the gap according to the manual and then using a strobe light to set the timing?"
Setting the points gap is an indirect method of setting the required build up of charge in the coil. The angle of dwell is what you are trying to set, so using a dwell meter is the direct and most accurate approach. Also the dwell meter measures dynamically whereas a feeler gauge can only be used statically. The instructions in "how a car works" cover initial setting, resetting after a bedding in period for new points and explains how using a dwell meter is accurate even when the points are well used.
Frank T
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RobD
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« Reply #26 on: 20 November, 2015, 12:55:39 PM » |
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Reading "how a car works" on the use of dwell meters I can't see how you can get readings for different cylinders. Surely the meter averages the dwell over all the lobes of the distributor cam.
Frank T
Absolutely right Frank and as Peter quite rightly points out, it's main benefit is enable wear in the dizzy to be compensated for by adjustment. Measuring each event, which is what I'm interested in, requires an oscilloscope rather than a simple meter. Yesterday I had all this explained to me by an older , wiser man...  |
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You're all entitled to my opinion. '75 Fulvia 1.3S '68 works Laverda 125cc ISDT KTM 640 Adventure Yamaha TDM 900 Numerous Gas Gas trail bikes... www.adventureride.co.uk |
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