how much timing retart

comish71 · Post by **comish71** » July 15th, 2007, 6:03 pm

how much do i need to retard my timing to run 150-175 shot. it will be running through a direct port setup and a progressive control. the motor is fully built (top end with new valvesprings and retainers and valves as well as reground cams. the bottom end with rods and pistons.
i know that the general rule used with hondas is approx 2 degrees for each 100 shot, i think its a bit much when talking about a car that's set at 10 detrees btdc. thanks

Franko · Post by **Franko** » July 16th, 2007, 8:59 am

When you are setting the engine at 10 btdc that is only setting it up with the ecu because thats what it uses as a basis for all the ignition control.

Under high reving with little load its probally putting 30 degrees or so and when under a full throttle condition its probally around 25ish..
The question is how are you controlling your timing? If you move your distributor back a few degrees that is going to affect your whole timing map and probally slow the car down.

Otherwise Id say go with what the honda boys use.. 2 degrees aint much. Better to be safe than sorry.

comish71 · Post by **comish71** » July 18th, 2007, 10:39 am

i am controlling my timing with my msd box. when i turn on the switch for the nitrous it sends a signal to the msd which retards the timing by the amount set

blackops032 · Post by **blackops032** » August 1st, 2007, 7:06 pm

be safe and retard it alot more that what you think you will initially need