Pulling timing on the top end

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Craig W. · #1 Post by **Craig W.** » Sat Mar 06, 2010 2:54 pm

I know its not uncommon for N/A racers to pull timing out on the top end for a higher trap speed. What about a nitrous motor? Any of you guys pulling timing out in high gear? If so, how much and at what point are you doing it? What gains did you find?

If you don't want to say in public, would you pm me or e-mail me at craig@2quicknovas.com. I don't think I'd be competing against any of you.

Thanks.

#2 Post by **John_Heard** » Tue Mar 23, 2010 6:27 am

Haven't played with taking out timing on the top end myself, but maybe it's more that they are running a little extra at launch then taking it back out downtrack?

Craig W. · #3 Post by **Craig W.** » Tue Mar 23, 2010 8:44 am

Not sure. No one will talk about it!

One guy I worked with has mentioned N/A guys pulling about 10 degrees on the top end and gaining a lot of mph. I've heard others mention it too, but never a nitrous guy.

supernova · #4 Post by **supernova** » Tue Mar 23, 2010 9:19 am

I would think that pulling more timing will hurt more than help on a nitrous motor. You still need some lead time for the added fuel and nitrous.
What we do is take the hit timing out at the start and add back in what the motor can handle. Say we're taking out 12 deg. For the nitrous and somewhere down track add back 2 or 3 deg. Or what ever it can handle and it helps make power on the juice. Everyone thinks you should take out a given amount of timing for a given amount of nitrous but no one thinks you should add some back in down track. Nitrous loves timing on the big end. Try that for something new. I don't think taking out more timing on a nitrous motor will help much.

aitch o · #5 Post by **aitch o** » Tue Mar 23, 2010 10:08 am

craig,
try pulling 2-4 degrees over 7000 rpm.
might be worth .05 et and 1-2 mph (in the 1/4 mile)
scott

#6 Post by **John_Heard** » Tue Mar 23, 2010 11:54 am

Scott I'd like to suggest that you try pulling 10 degrees extra timing from the 330' to the strip next time we race.

supernova · #7 Post by **supernova** » Tue Mar 23, 2010 2:08 pm

John_Heard wrote:Scott I'd like to suggest that you try pulling 10 degrees extra timing from the 330' to the strip next time we race.

I can't help but laugh at this one! I'd also like to see this race.

aitch o · #8 Post by **aitch o** » Tue Mar 23, 2010 4:06 pm

i don't know about that one mr. up-one-on-me.
if i had hp to throw away like you big block guys, i might try it.
but i have to run the little motor pretty hard just to be able to see your taillights.

#9 Post by **John_Heard** » Tue Mar 23, 2010 6:24 pm

I have a feeling you won't be at much of a disadvantage once you figure out how to make the blower motor work.

chpcamaro · #10 Post by **chpcamaro** » Tue Mar 23, 2010 10:39 pm

now this is fun reading lol

aitch o · #11 Post by **aitch o** » Wed Mar 24, 2010 8:28 am

making it work,
making it work well,
and making it live,
are 3 different things.
i have not got past step one.
that is why I am down 1-0 to everyone in the mako field.

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