Do you recommend higher octane for 14 degree timing ?

Mike Pearson - WYSIWYG... · Post by **Mike Pearson - WYSIWYG...** » Thu Sep 26, 2002 10:07 pm

Hi, I did a search for "advanced timing" on the NZ lists,
but didn't find any discussion.

What are people's experience with running 91 or 96 Octane
with the timing set to 14 degrees ?

Mike - 1990 Eunos Roadster - WYSGUY
www.eunos-roadster.com

Post by **zorruno** » Thu Sep 26, 2002 10:39 pm

sorry I think the database was re configuring at the time. There are about
100 hits for timing advance now.

PS - I run 96, and 16 Degrees - occasional detonation if I ever run 91

[...]

jeff · Post by **jeff** » Thu Sep 26, 2002 10:52 pm

it's more likely, but not guaranteed, that you'll need
more octane with the timing bump.

If you're like me and want the most bang for your buck
(ie stay w/ 91 octane), after advancing if it pings
just dial it back a little until it stops pinging.
Scribe a pencil mark across crank angle sensor
beforehand so you know where to set it back to if
necessary! I had to resort to this deviousness since
I never used a timing light ...

[...]

Mike Pearson - WYSIWYG... · Post by **Mike Pearson - WYSIWYG...** » Thu Sep 26, 2002 10:56 pm

Thanks zorruno,

sorry I think the database was re configuring at the time.

I did the search again, and found a posting from you was just what I was
looking for:

-- Original post --
Most people report that advancing the timing to 14 degrees still allows the
use of 91 octane without problems. Mine is at around 16 deg and I find that
I have to use 96. Others (Gary M?) have used an 18 degree setting in the
past and I assume 96 octane?

Also, thanks to Gary Morrison for a nice dyno graph too.
Seems to show the advanced timing kicks in at about 3,000 rpm.

Mike - 1990 Eunos Roadster - WYSGUY
www.eunos-roadster.com