Spark advance curve

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FULLBORE
Posts: 35
Joined: Fri Feb 04, 2022 1:17 pm
First Name: Mike
Last Name: Coats
Location: Caseville MI
Board Member Since: 2021

Spark advance curve

Post by FULLBORE » Fri Sep 09, 2022 9:17 am

Good day everyone
Im looking for a dyno spark advance curve for model Ts
That would be a graph with spark on the vertical axis and rpm on the horizontal axis at maximum torque.


TXGOAT2
Posts: 7391
Joined: Sun Feb 14, 2021 10:08 pm
First Name: Pat
Last Name: McNallen
* REQUIRED* Type and Year of Model Ts owned: 1926-7 roadster
Location: Graham, Texas
Board Member Since: 2021

Re: Spark advance curve

Post by TXGOAT2 » Fri Sep 09, 2022 10:11 am

Is your engine and ignition system stock? If not, how is it modified? Correct spark timing in any particular instance depends on a number of factors. Stock torque maximum is around 900 RPM. A stock T engine can take a good bit of advance at that speed using pump gasoline.

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