getsum27

tell me what you think
150hp
.062 and .033 jets
93 octane pump gas

shortdog

iTrader: (1)

Rich

Did you pull any timing? Can't really see the timing mark.

getsum27

heres a better pic

getsum27

23 degrees timing on this pass

03supercobra

iTrader: (38)

Good plug pics, are you doing this at the track? I would pull another degree to be on the safe side and lean it out a bit, see how the fuel ring and timing mark are, and then maybe add the degree back in from there. If your at the track, see if it picks up with the changes. Do you have a wideband by chance?

camscam02

iTrader: (21)

Go to a .031 and pull a degree, see what it does from there. Probably need a .030

Neal@NitrousOutlet

You are not idling any are you?? You shut it down after the run right correct.

From the pictures you are a little rich. Timing needs to come out. This would be if there wasn't any idle time on them.

getsum27

Explain to me about the timing.
The timing mark is so close to the end of the strap I thought that was extremely safe.

I've always been told get the timing mark close to the curve

I cut the engine off at the stripes.........

getsum27

double post

camscam02

iTrader: (21)

"on the bend(curve)" is a general saying that has been adopted over the years. The fact is that "on the bend" might not be optimal for everyone. The only real way to find where your combination wants the timing mark (to me) is to get the fuel correct while having low timing in the motor (low timing will only hinder performance, not hurt parts) and then start adding timing 1 degree at a time until your et starts to fall. When it falls pull it back 1 degree and see where the mark is on the plug.

There are always different ways to do things and for sure this could take a good amount of passes but we intend to aim on the safe side for all things.

Finally the reason everyone is telling you to take a degree out is because when you lean a motor out automatically your putting more heat in the motor so taking that extra degree out as you lean it down will ensure a little more window of safety and like I said, you can always add it back in. Make small changes and let the timeslip and plug tell you what the motor wants.

Hope that helps!

dekan513

iTrader: (2)

not to take over the post but, whats the best way to find the sweet spot for fuel other then a wideband.
like what am i lookin for on the porcelain .

ATVracr

iTrader: (5)

Cut the plugs ... want an 1/8th inch thick or less ring around bottom of the porcelin.

dekan513

iTrader: (2)

ty much, thats what i was wanting to know.