Author Topic: 7.0 and nitro  (Read 5467 times)

Offline wideopen231

  • Hero Member
  • *****
  • Posts: 1911
    • View Profile
  • Your Best Time: 1/8 3.70@ 198 1/4 5.78@245
  • Your Engine: Hemi 526 ci alcohol
  • Your Track: Piedmont
  • Your Vehicle: 225 CMC FED
  • General Location: NORTH CAROLINA
7.0 and nitro
« on: October 08, 2022, 06:43:09 AM »
Since legal and cheap(ha ha ha) power. Wondering if any in 7.0 NE are running nitro to get them to 7.0. I figure my combo shoule be good for 7.0 or very close.I know if need I can run 30% with no changes except maybe converter. I do not think would need that much nitro to get little I might need.

So you know of anyoner running small loads to make a field?
Relecting obama is like shooting right foot because it did not hurt enough when you shot left foot

Offline gordon

  • Newbie
  • *
  • Posts: 43
    • View Profile
  • Your Track: Sacramento
  • Your Vehicle: FED
Re: 7.0 and nitro
« Reply #1 on: October 09, 2022, 07:51:01 AM »
I will be next season in my car. 511 BBC 4.350" X4.375"  All cast iron Littlefield 8-71 10.5:1 ,3:70 RP , 200" Uyehara FED . I worked closely with Bob Szabo on low percentage combos. They work very very well. Very little OD on blower needed. The AF ratio is such that it is Uber repeatable even as weather changes.

Offline wideopen231

  • Hero Member
  • *****
  • Posts: 1911
    • View Profile
  • Your Best Time: 1/8 3.70@ 198 1/4 5.78@245
  • Your Engine: Hemi 526 ci alcohol
  • Your Track: Piedmont
  • Your Vehicle: 225 CMC FED
  • General Location: NORTH CAROLINA
Re: 7.0 and nitro
« Reply #2 on: October 09, 2022, 05:42:53 PM »
Gordon. Don't advertise all the positive reason for it. Just wanted to know if any where doing so. ZDon't give other idea or everyone will and a new rule will be made.LOL
Relecting obama is like shooting right foot because it did not hurt enough when you shot left foot

Offline tcoupekyle

  • Sr. Member
  • ****
  • Posts: 354
    • View Profile
  • Your Best Time: 4.70 1/8
  • Your Track: Houston Motorsport park
  • Your Vehicle: 225" slip joint FED
  • General Location: Houston
Re: 7.0 and nitro
« Reply #3 on: October 09, 2022, 07:16:54 PM »
Haha I want to run nitro too.

Offline tcoupekyle

  • Sr. Member
  • ****
  • Posts: 354
    • View Profile
  • Your Best Time: 4.70 1/8
  • Your Track: Houston Motorsport park
  • Your Vehicle: 225" slip joint FED
  • General Location: Houston
Re: 7.0 and nitro
« Reply #4 on: October 10, 2022, 04:20:55 PM »
Gordon, anywhere I could read about this?
I'm seriously thinking of playing with small loads.

Offline gordon

  • Newbie
  • *
  • Posts: 43
    • View Profile
  • Your Track: Sacramento
  • Your Vehicle: FED
Re: 7.0 and nitro
« Reply #5 on: October 10, 2022, 07:09:19 PM »
Yes There are two very good resources . First Our own host here "Spud Miller" Has spent years learning Magnetos, Mechanical fuel Inj. and of course the use of Nitromethane. Spud has on his Website somewhere still a compilation of his findings and advice on running different %'s of Nitro even for bracket racing. He hides no secrets , Spud willingly shares info with his customers. Spud wants you to enjoy success. I might be stepping out of line here and if so please forgive me as I am an open Kimono kind of guy. The other excellent Source on this subject is Bob Szabo , long time close friend of mine and racer. Bob also has gone down the long road of learning this stuff using the scientific method instead of monkey see monkey do that has proliferated Nitro and Mechanical fuel injection use. Both of these men come from Science/Engineering backgrounds . When some one would tell them something was gospel about FI or Nitro , they did not swallow the info until they could prove it or disprove it with facts. If either one of them tells you something to help you, take that check to the bank and cash it. Search Spuds website for his notes, Call Him, Email him, the same with Bob Szabo . If you are serious about running even small amounts to help your performance they can help. I could go on more about what each one has done to help me and my efforts through the years , but that won't help you. Reach out and call them.   
  And when you do call them tell them Flash Gordon said to call them.
« Last Edit: October 10, 2022, 07:12:09 PM by gordon »

Offline sknopp

  • Newbie
  • *
  • Posts: 41
    • View Profile
  • Your Best Time: 7.008@215 on 7.00 Index
  • Your Track: Bowling Green
  • Your Vehicle: 1969 MW 214" FED
Re: 7.0 and nitro
« Reply #6 on: October 13, 2022, 08:47:49 AM »
I ran nitro in both 7.50 and 7.0 classes for the past 20 yrs, from 25% to 80%.  392/417 hemi, direct drive in a FED.  What are you wanting to know?  Steve K.

Offline tcoupekyle

  • Sr. Member
  • ****
  • Posts: 354
    • View Profile
  • Your Best Time: 4.70 1/8
  • Your Track: Houston Motorsport park
  • Your Vehicle: 225" slip joint FED
  • General Location: Houston
Re: 7.0 and nitro
« Reply #7 on: October 13, 2022, 01:21:41 PM »
Steve, you do that with a blown application?

Offline Supercat

  • Sr. Member
  • ****
  • Posts: 252
    • View Profile
  • Your Best Time: 6.16 @ 218 1/4
  • Your Track: Bakersfield to Bowling Green to New England dragway
  • Your Vehicle: Buick powered/ 200" Fastech FED
Re: 7.0 and nitro
« Reply #8 on: October 13, 2022, 06:53:18 PM »
I run 7.2 at 192 NA. My new engine at a minimum is 300hp more Naturally Aspirated than the previous. I won't need the Nitro as I will go to fast for 7.0 Pro :D. So looking forward to next spring.  I will run a 25-30% load to push the new engine combo, as this is an engine our company will be producing soon. Expensive but after running 98% in Nostalgia Top Fuel it's hard not being around it.

Offline wideopen231

  • Hero Member
  • *****
  • Posts: 1911
    • View Profile
  • Your Best Time: 1/8 3.70@ 198 1/4 5.78@245
  • Your Engine: Hemi 526 ci alcohol
  • Your Track: Piedmont
  • Your Vehicle: 225 CMC FED
  • General Location: NORTH CAROLINA
Re: 7.0 and nitro
« Reply #9 on: October 14, 2022, 02:33:27 AM »
Thats  funny I asked same question ob Facebooks 7.0 and was they had never heard of anyone running nitro in 7.0 class.. While the fuel is not cheap. Neither are blower belts, restraints stripping not bad or any type of maintenance on race car. Fig ure I take a bracket combo that is close but need little more and it is fairly cheap way to get that extra oomph. I now one racer he swears 20% picked him up almost .2 with mild combo. I know 30% WILL SEND STALL up about 700 RPM on data logger. One reason I figure keeping percentage lower will be better for my deal right now.
Relecting obama is like shooting right foot because it did not hurt enough when you shot left foot

Offline Supercat

  • Sr. Member
  • ****
  • Posts: 252
    • View Profile
  • Your Best Time: 6.16 @ 218 1/4
  • Your Track: Bakersfield to Bowling Green to New England dragway
  • Your Vehicle: Buick powered/ 200" Fastech FED
Re: 7.0 and nitro
« Reply #10 on: October 14, 2022, 08:13:17 AM »
I ran nitro( up to 40%) in NE3 and then NE2 haven't needed it on the current 462.
Curious what the power HP/Torque % increase would be possible in ..... a 1300HP NA engine on 10%, 20%, 30%

Offline sknopp

  • Newbie
  • *
  • Posts: 41
    • View Profile
  • Your Best Time: 7.008@215 on 7.00 Index
  • Your Track: Bowling Green
  • Your Vehicle: 1969 MW 214" FED
Re: 7.0 and nitro
« Reply #11 on: October 14, 2022, 11:05:22 AM »
Kyle, yes, blown.
« Last Edit: October 14, 2022, 11:10:34 AM by sknopp »

Offline sknopp

  • Newbie
  • *
  • Posts: 41
    • View Profile
  • Your Best Time: 7.008@215 on 7.00 Index
  • Your Track: Bowling Green
  • Your Vehicle: 1969 MW 214" FED
Re: 7.0 and nitro
« Reply #12 on: October 14, 2022, 11:09:02 AM »
Chris, in the NDRL there were I think 3 of us running nitro, but I was the only blown car.  Blown nitro is not legal in 7.0 for the heritage series (it is legal in 7.50) but the NDRL had an agreement with HNRA for the only heritage race we ran at the reunion in Bowling Green. 

Offline wideopen231

  • Hero Member
  • *****
  • Posts: 1911
    • View Profile
  • Your Best Time: 1/8 3.70@ 198 1/4 5.78@245
  • Your Engine: Hemi 526 ci alcohol
  • Your Track: Piedmont
  • Your Vehicle: 225 CMC FED
  • General Location: NORTH CAROLINA
Re: 7.0 and nitro
« Reply #13 on: October 14, 2022, 12:01:23 PM »
Well that rule is fine with me. My car is injected Hemi.While I do have everything to run blower except a small enough blower(LOL), I would like to keep it just injected. Nothing against blowers been running them in TA/D and TA/FC for decades. I have been working with A/Fuel team and the nitro injected deal is just cool as xxxx. While I would like to run an A/Fuel in Nostalgia , that would mean major changes and cash out lay I don't have now days. Running 7.0 is enough stretch right now. My little 482 ci Hemi should be closer to 950 hp and figure the 15 to 20% would put me past 7.0 just enough to be competitive with little pedaling on top end. Thinking the biggest out lay of money will be updating few items plus new converter and about only change from the weekend bracket combo.well remove electronics  for sanctioned events
Relecting obama is like shooting right foot because it did not hurt enough when you shot left foot

Offline Harv

  • Newbie
  • *
  • Posts: 5
    • View Profile
  • Your Best Time: None
  • Your Engine: Holden alky 154ci
  • Your Track: Sydney Dragway
  • Your Vehicle: Building a IHRA-certified nostalgia FED
  • General Location: Sydney Australia
Re: 7.0 and nitro
« Reply #14 on: October 15, 2022, 02:18:03 AM »
The other excellent Source on this subject is Bob Szabo , long time close friend of mine and racer.

Bob has written a pretty good book on exactly what you are trying to do - take a fairly successful combination and then squeeze a few more ponies out of it by tipping the can:

https://racecarbook.com/new-shop/blown-nitro-racing-on-a-budget/

I'd suggest starting by reading Spud's notes here: http://onehotchilipepper.com/nitro/ and then buy Bob's book.

Cheers,
Harv