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35DM8

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35DM8
#1
allanreeling ALLAN R
RANDLAY, TELFORD, Shropshire, UK   GBR
Morning.
After some engine swapping i finished up with the 3.9 in the B roadster. This entailed some "re-arranging" of the centre shaft of the dizzy, to get the right oil pump drive. The one I used has nil wear and it fits perfectly BUT the advance spring posts are at 3/4" centres and I've drawn a blank trying to get any springs, never mind getting suitable ones . Distributor Doctor doesn't have them.
Anyone any ideas? Ideally I would like a selection to experiment with.



soonerv8

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allanreeling ALLAN R
RANDLAY, TELFORD, Shropshire, UK   GBR
Of sorts Bill. But I did get a kit like that from Real Steel, over here. But the springs are of the shorter size. It seems to be difficult to get the springs to suit the 3/4" pin centres.



soonerv8

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ex-tyke Avatar
ex-tyke Graham Creswick
Chatham, ON, Canada   CAN
1976 MG MGB
FWIW, the advance springs on my Ford 302 distributor are 3/4" long.
As best as I can determine, the post to post centreline distance is 9/16" . When installed, spring has basically little to no tension.

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allanreeling ALLAN R
RANDLAY, TELFORD, Shropshire, UK   GBR
Thanks for that Graham. Ideally one spring should be under tension, in other words 11/16" or so, the other something like 13/16" to be slack initially.
But you have got me thinking that maybe i'll have more success looking for advance springs for other makes of distributor.



soonerv8

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B-racer Avatar
B-racer Jeff Schlemmer
Shakopee, MN, USA   USA
1950 Willys Jeep Pickup "Ratrod"
1971 MG MGB
2014 Dodge Charger
Good luck finding those. Basically, they don't exist. You'd be better off getting an early 35D8 which used the more common, shorter springs. Short of doing that, you'll have to tweak your existing springs or find a local spring manufacturer who can make what you need.



jeff@advanceddistributors.com

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allanreeling ALLAN R
RANDLAY, TELFORD, Shropshire, UK   GBR
It's the thrill of the hunt, Jeff!!hot smiley



soonerv8

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1744 Avatar
1744 Gold Member Bill Guzman
CA, USA   USA
1973 MG MGB GT "Renegade I GT"
1974 MG MGB "Renegade"
One solution would be to make bushings to fit the existing spring pegs to shorten the length and use the most common GM springs.


Member Services:
MG Classic Conversions V6. Wilwood brake dealer.
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allanreeling ALLAN R
RANDLAY, TELFORD, Shropshire, UK   GBR
Sorry can't see how increasing the diameter of the spring pegs will allow the use of shorter springs.



soonerv8

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Re: 35DM8
#10
1744 Avatar
1744 Gold Member Bill Guzman
CA, USA   USA
1973 MG MGB GT "Renegade I GT"
1974 MG MGB "Renegade"
Yes,, the post in the distributor has a groove, If the groove is reduce then other size springs can be use.

If the tabs in the base of the distributor bent inward, then a smaller spring can be used.
Either way I see a simple fix

I would with the GM distributor springs, common. Modifying the tab (making it closer to the spring post) can allow the use of smaller springs.

Just a thought.


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Re: 35DM8
#11
allanreeling ALLAN R
RANDLAY, TELFORD, Shropshire, UK   GBR
Different set up Bill, four solid 1/8" rods.But i've found a local ignition specialist who is posting me some. The next thing is all about "curves"!! Well spring is on it's way and the sap is rising!!hot smiley



soonerv8



Edited 1 time(s). Last edit at 2019-02-22 03:18 AM by allanreeling.


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Re: 35DM8
#12
1744 Avatar
1744 Gold Member Bill Guzman
CA, USA   USA
1973 MG MGB GT "Renegade I GT"
1974 MG MGB "Renegade"
What are talking about?? Curves? what does she look like grinning smiley


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Re: 35DM8
#13
allanreeling ALLAN R
RANDLAY, TELFORD, Shropshire, UK   GBR
My only love interest at present Bill! But she is beautiful.



soonerv8



Edited 1 time(s). Last edit at 2019-02-24 10:56 AM by allanreeling.


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Re: 35DM8
#14
B-racer Avatar
B-racer Jeff Schlemmer
Shakopee, MN, USA   USA
1950 Willys Jeep Pickup "Ratrod"
1971 MG MGB
2014 Dodge Charger

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