TEA-20 distributor advance -weight-springs

Ron_m · Mar 10, 2015

I recently installed an electronic pointless ignition conversion
in my 1950 TEA-20, with Standard Engine (Lucas distributor)
It has been changed to 12 volt/ neg ground.
During the change-over I found that 1 of the springs, attached to the advance weights , was missing and the other spring was
attached to the post end only, the other end having been broken
off.
Even tho I can start the engine it does not run even,probably
due to the lack of the advance-weight-springs.
My question: where should I search for information/specifications/
and/or purchase of replacement springs.
Any help will be much appreciated.Thanks for prompt reply (s)
Ron_m

John Deere D · Mar 10, 2015

When I purchased the "Harry Ferguson Repair Manual TE 20 TEA20 TEF20" original manual from England(e-bay)this manual was the best investment I ever made concerning TEA 20 Tractors. I shall be out of the Country for several more months. I do recall plenty of service SPECS. on the DISTRIBUTOR in question. Every person working on a HARRY FERGOSON Tractor should try to purchase this MANUAL. I had the same concern as you do on the springs. I checked on e-bay and purchased a used complete distributor. Once I had serviced the distributor the "SERVICE MANUAL" indicates the mechanical advance at various RPM's. By using a TIMIMG Lite/Strobe Lite and a Tack, I was able to check the advance. You may whish to check on U-TUBE as someone has a great video of checking a TEA 20 ignition / Distributor at various RPM's. I also found a source that sells brand new complete DISTRIBUTORS for the replacement of the LUCAS. See picture. Thought to be from Canada /USA

Steve@Advance · Mar 10, 2015

Not sure where you'd find factory correct
springs.

I remember from my old hot-rod days, could buy
spring assortments for fine tuning the advance
curve for various distributors. Co's like Mr.
Gasket, Mallory, Accell made them. Look at the
Jegs, JC Whitney website. Long time ago but probably some NOS
laying around.

Just have to trial and error fit them, check with
a timing light until it looks and runs right.
Timing curve is not that critical on the old low
compression, low RPM engines. Get it in the ball
park, no clatter, no starter kick back, no
backfire on acceleration... It will be fine.

Ron_m · Mar 10, 2015

Thanks for the reply, and the advise about the service manual.
With the issues that occur on a 65 year old tractor, a good
manual would be a sound investment.
Ron_m

Ron_m · Mar 10, 2015

Thanks, Steve, I had my son ( he's a diesel mechanic) work on
the distributor. He installed G M advance springs and so we will give them a try. If they work, I will list the specs on this forum.
Ron_m

Duner Wi · Mar 11, 2015

Put a timing light on it ans see if full advance comes in where it should be.

John Deere D · Mar 11, 2015

If you send me your e-mail I shall send you the parts break down and technical Info on your Distributor when I arrive home in May.
Bob....

Ron_m · Mar 11, 2015

That's what I will do. Thanks for taking the time to reply.
Ron_m

Ron_m · Mar 11, 2015

John Deere D,
I would appreciate your sending the timing information for my
TEA-20 (1950 year) My email is: [email protected]
Ron_m

TEA-20 distributor advance -weight-springs

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