how does higher timing..
2nd Gear Member
Joined: Mar 2006
Posts: 215
From:
RE: how does higher timing..
It is actually a lot more "advanced" than 10*'s. 10* is the stock setting for the base timing. Which is checked when the Spout Connector is out. Then the Computer adds timing depending on load and RPM's. You "total timing" can be as high as 40*'s BTDC.
ORIGINAL: AdderMk2
actually thats called pre-ignition. Detonation is when the fuel ignites itself due to cylinder temperatures and pressure.
however... to answer the question about why the factory ddint set it higher.... well.. they did
its 10° advanced... instead of 0
ORIGINAL: Frebius
The reason you get more power is becuase you are adjusting the *'s Before Top Dead Center that your plugs fire. 10* is stock setting. Most people set at 14* so it fires sooner. What this does it ignite the fuel sooner. The closer you can get it to TDC the better because it will push down harder on the piston. If you do it to early you get detination and that is not good either. Detination is where the Piston is still on the way up and you ignite the fuel and it tries to force the piston back down while it is still traveling up.
The reason you get more power is becuase you are adjusting the *'s Before Top Dead Center that your plugs fire. 10* is stock setting. Most people set at 14* so it fires sooner. What this does it ignite the fuel sooner. The closer you can get it to TDC the better because it will push down harder on the piston. If you do it to early you get detination and that is not good either. Detination is where the Piston is still on the way up and you ignite the fuel and it tries to force the piston back down while it is still traveling up.
however... to answer the question about why the factory ddint set it higher.... well.. they did
its 10° advanced... instead of 0
6th Gear Member
Joined: Oct 2005
Posts: 6,028
From: st clair shores MI
RE: how does higher timing..
i believe 10* base timing = 26* total timing (but i could be wrong, i am about 90% certain though)
if your car is not pinging don't add more octane, you will actually lose power w/ more octane/same timing
you want to run as lean as safely possible, to get the most power, most add octane for safety, some think it makes more power which it absolutely DOES NOT
i safely sprayed 80 hp on 14* base timing the other night w/ 93 octane which proves that NA stock motor could run 14* w/ on 87 as long as it's cool out, but sub-regular 85 or 86 ? your starting to push it.
you don't always hear detonation, lots of times have to read the plugs to see that it's happening.
or power time the car, bump 2* per run til your mph starts to slow down, pay no attention to ET, just MPH. use the setting that the mph was fastest.
if your car is not pinging don't add more octane, you will actually lose power w/ more octane/same timing
you want to run as lean as safely possible, to get the most power, most add octane for safety, some think it makes more power which it absolutely DOES NOT
i safely sprayed 80 hp on 14* base timing the other night w/ 93 octane which proves that NA stock motor could run 14* w/ on 87 as long as it's cool out, but sub-regular 85 or 86 ? your starting to push it.
you don't always hear detonation, lots of times have to read the plugs to see that it's happening.
or power time the car, bump 2* per run til your mph starts to slow down, pay no attention to ET, just MPH. use the setting that the mph was fastest.
2nd Gear Member
Joined: Mar 2006
Posts: 215
From:
RE: how does higher timing..
Running it down the track is a very good way to judge it. That is how I did mine last week. It takes a few runs but at least you know you got it right.
ORIGINAL: nitrous_bob
i believe 10* base timing = 26* total timing (but i could be wrong, i am about 90% certain though)
if your car is not pinging don't add more octane, you will actually lose power w/ more octane/same timing
you want to run as lean as safely possible, to get the most power, most add octane for safety, some think it makes more power which it absolutely DOES NOT
i safely sprayed 80 hp on 14* base timing the other night w/ 93 octane which proves that NA stock motor could run 14* w/ on 87 as long as it's cool out, but sub-regular 85 or 86 ? your starting to push it.
you don't always hear detonation, lots of times have to read the plugs to see that it's happening.
or power time the car, bump 2* per run til your mph starts to slow down, pay no attention to ET, just MPH. use the setting that the mph was fastest.
i believe 10* base timing = 26* total timing (but i could be wrong, i am about 90% certain though)
if your car is not pinging don't add more octane, you will actually lose power w/ more octane/same timing
you want to run as lean as safely possible, to get the most power, most add octane for safety, some think it makes more power which it absolutely DOES NOT
i safely sprayed 80 hp on 14* base timing the other night w/ 93 octane which proves that NA stock motor could run 14* w/ on 87 as long as it's cool out, but sub-regular 85 or 86 ? your starting to push it.
you don't always hear detonation, lots of times have to read the plugs to see that it's happening.
or power time the car, bump 2* per run til your mph starts to slow down, pay no attention to ET, just MPH. use the setting that the mph was fastest.
