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Negative Supercharging Distributor Advance Springs
(Suit Chrysler made distributor)
Produces up to 50 lbs/ft more torque from low to midrange and up to 10% more fuel economy
No other product produces this much
torque and fuel economy for less than $20! |
Negative Supercharging (Impulse) advance springs fit ONLY 1957-92 Chrysler made points or electronic distributors
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Negative Supercharging (Impulse) advance springs
produce a radical new advance curve that substantially
improves torque from idle to midrange, acceleration,
towing power, responsiveness, fuel economy and
eliminates pre-ignition (pinging) in engines
from standard, performance to towing. The advance
springs fit ONLY Chrysler made points or electronic
distributors used in Chrysler 6 and V8 engines.
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| Therefore, compare the photo of the Chrysler
made distributor and advance spring weight to
the distributor fitted to your engine. If your
distributor is NOT the same as shown in the
photo, the engine will need to use a Chrysler
made electronic or points distributor or your
distributor will need to be recurved to the
Negative Supercharging (Impulse) advance curve.
For more details see Chrysler Electronic
Distributor. |
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Negative Supercharging (Impulse) advance curve MUST be used in conjunction with the following advance at the crank
| Fuel |
Open Chamber |
Close Chamber |
IMPORTANT |
| High Octane |
25° BTC |
22° BTC |
Ignition timing should not be advanced by more than 25° at the crank because it will reduce power even if pre-ignition (pinging) is not audible. |
| Low Octane |
21° BTC |
18° BTC |
Negative Supercharging vacuum advance
Vacuum advance at the crank should not be more than 45° with open chamber heads and 40° with close chamber heads.
Street engines have been using the wrong ignition advance curve for the past 50 years!
We developed the Negative Supercharging advance curve in 1993 to maximise the power produced by Negative Pressure Supercharging. However, we found this new advance curve also improves the torque and fuel economy in engines from standard, performance to towing.
| Impulse Engine Technology
P/L |
PO Box 986 Randwick NSW 2031 Australia
Ph: (02) 9398 5544
Fax: (02) 9398 5644
International: Ph: +(612) 9398 5544
Fax: +(612) 9398 5644
Email Us
Inventor of Negative Pressure Supercharging
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