Pulling timing on the top end
Moderator: John_Heard
Pulling timing on the top end
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.
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.
Craig Watson
2QuickNovas Racing
5.23@131
Sponsors:
AEM Electronics
Carnivore Performance
Rapp Racing
VFN Fiberglass
Fast Shafts
2QuickNovas Racing
5.23@131
Sponsors:
AEM Electronics
Carnivore Performance
Rapp Racing
VFN Fiberglass
Fast Shafts
- John_Heard
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Re: Pulling timing on the top end
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?
My 1971 X275 Nova | Facebook
Re: Pulling timing on the top end
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.
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.
Craig Watson
2QuickNovas Racing
5.23@131
Sponsors:
AEM Electronics
Carnivore Performance
Rapp Racing
VFN Fiberglass
Fast Shafts
2QuickNovas Racing
5.23@131
Sponsors:
AEM Electronics
Carnivore Performance
Rapp Racing
VFN Fiberglass
Fast Shafts
Re: Pulling timing on the top end
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.
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.
Blackhoodmafia!!!!
1972 Nova SS
572 C.I. BBC
Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs
1972 Nova SS
572 C.I. BBC
Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs
- aitch o
- Posts: 125
- Joined: Tue Jul 25, 2006 9:48 pm
- Location: Wichita, KS "It's OK - They're only tires..."
Re: Pulling timing on the top end
craig,
try pulling 2-4 degrees over 7000 rpm.
might be worth .05 et and 1-2 mph (in the 1/4 mile)
scott
try pulling 2-4 degrees over 7000 rpm.
might be worth .05 et and 1-2 mph (in the 1/4 mile)
scott
- John_Heard
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Re: Pulling timing on the top end
Scott I'd like to suggest that you try pulling 10 degrees extra timing from the 330' to the strip next time we race.
My 1971 X275 Nova | Facebook
Re: Pulling timing on the top end
I can't help but laugh at this one! I'd also like to see this race.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.
Last edited by supernova on Tue Mar 23, 2010 8:38 pm, edited 1 time in total.
Blackhoodmafia!!!!
1972 Nova SS
572 C.I. BBC
Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs
1972 Nova SS
572 C.I. BBC
Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs
- aitch o
- Posts: 125
- Joined: Tue Jul 25, 2006 9:48 pm
- Location: Wichita, KS "It's OK - They're only tires..."
Re: Pulling timing on the top end
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.
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.
- John_Heard
- Site Admin
- Posts: 5734
- Joined: Thu May 12, 2005 11:20 am
- Location: Resume Speed, Kansas
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Re: Pulling timing on the top end
I have a feeling you won't be at much of a disadvantage once you figure out how to make the blower motor work.
My 1971 X275 Nova | Facebook
Re: Pulling timing on the top end
now this is fun reading lol
best to date N/A 8.91@153
psca westcoast heads up racing open comp
67 Camaro RS/SS
BBC Powerglide 4800 stall 4.11 29.5x10.5W
http://www.chpdragracing.com
psca westcoast heads up racing open comp
67 Camaro RS/SS
BBC Powerglide 4800 stall 4.11 29.5x10.5W
http://www.chpdragracing.com
- aitch o
- Posts: 125
- Joined: Tue Jul 25, 2006 9:48 pm
- Location: Wichita, KS "It's OK - They're only tires..."
Re: Pulling timing on the top end
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.
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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