View Full Version : How to advance timing in a '95 240sx?

08-15-2000, 01:42 PM
I was wondering how to advance the timing on a '95 240sx? And also about how much can I advance it if I run 92 octane all the time?


08-16-2000, 04:15 AM
"Timely" that you should mention this - I'm about to try it myself! http://www.freshalloy.com/ If there aren't any surprises, all you need is a timing light and a wrench/socket set.

A standard adjustment is to first use the timing light to find the timing marks on the crank pulley with the engine running. Next, loosen the hold down nuts/bolts on the distributor and turn it so the marks on the pulley move clockwise to advance the timing, counterclockwise to retard it. Once the timing is set where you want it, retighten the nuts/bolts on the distributor.

I've read that you can advance the timing as much as 4 degrees. I plan on advancing it approximately 2 degrees to see how the engine performs running with the same octane as you.

08-16-2000, 07:49 AM
Of course it wouldn't be as simple as a tweak... http://freshalloy.ubbforums.com/forum/images/icons/wink.gif I recently checked the timing on a Integra ZC engine and it involved pulling a fuse, plugging a vacuum hose, disconnecting an electrical plug, and a few other esoteric mechanical practices. (It's a Honda - what do you expect!) Thanks for the follow-up and link! http://www.freshalloy.com/

08-24-2000, 04:27 PM
One more thing. After you advance the timing, you should unplug the battery for a few minutes so the computer will learn the new timing. I advanced my timing and didn't unplug the comp. When driving, my car began to detonate until I did the battery thingy.