How big of a starter do I need for a high compression engine?
According to Basner, a 200 ft-lb starter will work as well on a street car with a near stock engine as it will on a 12:1 compression race engine. For budget considerations though, the one size fits all approach is not always the best one to take. As compression ratio rises, the need for higher starting torque also increases.
Can a high compression starter cause kickback?
Every component inside the engine that generates friction is working against the starter. Compression also makes it more difficult for the starter. Although OEM starters may carry a high torque rating, the higher compression ratio of many racing and high-performance engines can cause kickback and actually break a poorly made or OEM starter.
What’s the compression ratio of MSD Dynaforce starter?
MSD recently released the Dynaforce line of starters, with torque output to start engines with over 18.5:1 compression and gear-reduction ratios available for engines requiring faster cranking.
Are there any problems with 10 : 1 compression?
If the cam has a somewhat conservative 200 to 210 degrees of duration at 0.050-inch tappet lift, this might cause problems. Combining a short duration cam with very little overlap with 10:1 static compression ratio will likely cause detonation problems depending upon the amount of initial timing and how quickly the ignition curve is tuned.
According to Basner, a 200 ft-lb starter will work as well on a street car with a near stock engine as it will on a 12:1 compression race engine. For budget considerations though, the one size fits all approach is not always the best one to take. As compression ratio rises, the need for higher starting torque also increases.
Every component inside the engine that generates friction is working against the starter. Compression also makes it more difficult for the starter. Although OEM starters may carry a high torque rating, the higher compression ratio of many racing and high-performance engines can cause kickback and actually break a poorly made or OEM starter.
MSD recently released the Dynaforce line of starters, with torque output to start engines with over 18.5:1 compression and gear-reduction ratios available for engines requiring faster cranking.
Is it possible to run 10 : 1 compression?
Running 10:1 compression the street is also dependent on camshaft timing. If the cam has a somewhat conservative 200 to 210 degrees of duration at 0.050-inch tappet lift, this might cause problems.